RAYDIUM SEMICONDUCTOR CORPORATION Patent applications |
Patent application number | Title | Published |
20140348280 | CLOCK-EMBEDDED SERIAL DATA TRANSMISSION SYSTEM AND CLOCK RECOVERY METHOD - A clock-embedded serial data transmission system is disclosed. The clock-embedded serial data transmission system includes a combinational logic circuit. The combinational logic circuit includes a clock window generator and a clock generator. The clock window generator is used to generate a first clock window according to two clock phases. The clock generator is coupled to a clock window generator and used to select a periodic data within the first clock window from a serial data signal according to the first clock window and generate a recovery clock accordingly. | 11-27-2014 |
20140347061 | ELECTROSTATIC DETECTING CIRCUIT AND METHOD THEREOF - An electronic detecting circuit includes at least one electrostatic protective module, at least one detection module, and a microprocessor controller module. The at least one detection module is respectively connected to the at least one electrostatic protective module, and the at least one detection module generates a driving record signal according to a driving state of the at least one electrostatic protective module. The microprocessor controller module is coupled with the at least one detection module, wherein the microprocessor controller module records the driving record signal when the at least one detection module transmits the driving record signal to the microprocessor controller module. | 11-27-2014 |
20140253566 | SOURCE DRIVING CIRCUIT AND DATA TRANSMISSION METHOD THEREOF - A source driving circuit is disclosed. The source driving circuit includes a first integrated source driver and a second integrated source driver. The first integrated source driver includes a first receiving unit, a timing controller, a first source-driving-unit and a first transmission unit. The first receiving unit receives an original image data through a displayport (DP) interface, and decodes the original image data to a first display data and a second display data. The timing controller transmits a first control signal and a second signal. The first source-driving-unit receives the first control signal and the first display data. The first transmission unit receives the second display data, and the second integrated source driver receives the second control signal and the second display data, so as to elevate the compatibility between the source driver and the DP interface. | 09-11-2014 |
20140197868 | DRIVING CIRCUIT HAVING BUILT-IN-SELF-TEST FUNCTION - A driving circuit includes at least one reference voltage source, at least one offset unit, and at least one buffer module. The at least one reference voltage source generates a reference voltage. The at least one offset unit generates an offset voltage, wherein the offset voltage and the reference voltage form a judging voltage range. The at least one buffer module has a first input end, a second input end, and an output end, wherein the first input end receives an analog voltage; the at least one reference voltage source is connected with the second input end; the at least one buffer module, according as whether the analog voltage is within the judging voltage range, outputs a pass logic signal or a fail logic signal at the output end. Particularly, the buffer module has Built-In-Self-Test (BIST) function and can increase test efficiency and voltage accuracy. | 07-17-2014 |
20140160107 | CHARGE SHARING APPARATUS AND CHARGE SHARING METHOD - A charge sharing apparatus and a charge sharing method applied in a driving circuit of a liquid crystal display are disclosed. The driving circuit includes at least one data latch and at least one output switch. The charge sharing apparatus includes a generating module and an adjusting module. The generating module is coupled to the at least one data latch and used for generating at least one charge sharing level according to at least one data signal inputted to the at least one data latch. The adjusting module is coupled between the generating module and the at least one output switch and used for selectively adjusting level changing state of at least one output signal outputted by the at least one output switch according to the at least one charge sharing level. | 06-12-2014 |
20140145629 | LED DRIVING APPARATUS AND OPERATING METHOD THEREOF - A LED driving apparatus and an operating method thereof are disclosed. The LED driving apparatus includes a power, at least one LED string, a LED control unit, and an input voltage detection circuit. At least one LED string is coupled to the power and includes LEDs connected in series. The input voltage detection circuit is coupled to two ends of at least one LED of the LEDs respectively and used to judge whether an input voltage is lower than a LED conducting voltage. The input voltage detection circuit includes a charging capacitance to be charged when the at least one LED string is conducted. If the judged result of the input voltage detection circuit is yes, the input voltage detection circuit will control the charging capacitance having a charging voltage to discharge to the at least one LED string. | 05-29-2014 |
20140132573 | LIQUID CRYSTAL DISPLAY APPARATUS AND DRIVING METHOD - A driving method is disclosed, and the driving method is adopted to a liquid crystal display apparatus. The driving method includes steps as follows: receiving an original display data; rearranging the original display data to a new display data according to at least a scan driving mode; adjusting a sequence of scan driving so as to correspond to the scan driving mode according to a control signal; transmitting a new display data to a display panel through a data line, wherein the sequence of the original display data corresponds to the sequence of scan driving before adjusting, and a sequence of the new display data corresponds to the sequence of scan driving after adjusting according to the scan driving mode. | 05-15-2014 |
20140111107 | LED DRIVING APPARATUS HAVING HOLDING CURRENT CIRCUIT AND OPERATING METHOD THEREOF - A LED driving apparatus having a holding current circuit and an operating method thereof are disclosed. The holding current circuit includes an input terminal, a holding resistor, a regulator, a first resistor, a second resistor, a setup resistor, a control unit, and a transistor. The holding resistor and the regulator, the first resistor and the second resistor, and the transistor and the setup resistor are coupled between the input terminal and ground terminal respectively. The control unit is coupled to the transistor, between the holding resistor and the regulator, and between the first resistor and the second resistor respectively. The control unit receives a first voltage between the holding resistor and the regulator and a second voltage between the first resistor and the second resistor and outputs a control signal to selectively control the transistor off. | 04-24-2014 |
20140104257 | DRIVING CIRCUIT - A driving circuit for connecting a display module is provided. The driving circuit includes a polarity control module, an output control module, and a detecting module. The polarity control module provides a polarity control signal. The output control module is connected with the polarity control module and provides a plurality of output control signals. The detecting module is coupled with the polarity control module and the output control module, wherein the detecting module detects the polarity control signal and selectively controls the output control module to operate in at least one of a first control mode and a second control mode to control the output control signals. | 04-17-2014 |
20140095569 | ORTHOGONAL CODE MATRIX GENERATION METHOD AND RELATED CIRCUIT THEREOF - An orthogonal code matrix generation method includes: establishing an N×N orthogonal code matrix, wherein an inner product of every two rows of the orthogonal code matrix is 0, and each column of the orthogonal code matrix has a summation of elements equal to a same value, wherein N is a power of 4; and using the N×N orthogonal code matrix as a basic unit to establish a target orthogonal code matrix. An orthogonal code matrix generation circuit includes: an N×N orthogonal code matrix generator, arranged for establishing an N×N orthogonal code matrix, wherein an inner product of every two rows of the orthogonal code matrix is 0, each column of the orthogonal code matrix has a summation of elements equal to a same value; and a target orthogonal code matrix generator, arranged for using the N×N orthogonal code matrix as a basic unit to establish a target orthogonal code matrix. | 04-03-2014 |
20140077712 | LED DRIVING APPARATUS AND OPERATING METHOD THEREOF - A LED driving apparatus and an operating method thereof are disclosed. The LED driving apparatus includes a controller and an output stage. The output stage includes at least one LED, a switch, and a setup resistor. The at least one LED, the switch, and the setting resistor are coupled in series between an input voltage and ground. The controller is coupled to the input voltage and the switch respectively. The controller receives at least one voltage sensing signal and outputs a setup voltage signal to the output stage. The at least one voltage sensing signal is received from the node between the at least one LED and the switch, between two LEDs, or between two voltage dividing resistors coupled in series between the input voltage and ground. | 03-20-2014 |
20140070726 | LED DRIVING APPARATUS AND OPERATING METHOD THEREOF - A LED driving apparatus includes an output stage, an input resistor, a plurality of voltage dividing resistors, and a control circuit. The output stage includes at least one LED. A first voltage dividing resistor, a second voltage dividing resistor, and a third voltage dividing resistor are coupled between a specific voltage and ground in series to divide the specific voltage. A LED current passing through the LED has a duty cycle changed with the specific voltage. The control circuit senses a first voltage signal, a second voltage signal, and a third voltage signal between the first voltage dividing resistor and the second voltage dividing resistor, between the second voltage dividing resistor and the third voltage dividing resistor, and the input resistor respectively, and adjusts a setting voltage signal according to the first voltage signal, the second voltage signal, and the third voltage signal. | 03-13-2014 |
20140070722 | LED DRIVING APPARATUS AND OPERATING METHOD THEREOF - A LED driving apparatus and an operating method thereof are disclosed. The LED driving apparatus includes an output stage, an input resistor, a plurality of voltage dividing resistors, and a control circuit. A first voltage dividing resistor, a second voltage dividing resistor, and a third voltage dividing resistor are coupled between an input voltage and ground in series to divide the input voltage. The control circuit senses a first voltage signal, a second voltage signal, and a third voltage signal between the first voltage dividing resistor and the second voltage dividing resistor, between the second voltage dividing resistor and the third voltage dividing resistor, and the input resistor respectively, and adjusts a setting voltage signal according to the first voltage signal, the second voltage signal, and the third voltage signal. | 03-13-2014 |
20140070719 | DRIVING CIRCUIT HAVING VOLTAGE DIVIDING CIRCUITS AND COUPLING CIRCUIT FOR CONTROLLING DUTY CYCLE OF TRANSISTOR AND RELATED CIRCUIT DRIVING METHOD THEREOF - A driving circuit includes: a first voltage dividing circuit arranged to generate a first voltage-divided signal according to a supply voltage; a second voltage dividing circuit arranged to generate a second voltage-divided signal according to specific voltage; a coupling circuit coupled between the first voltage dividing circuit and the second voltage dividing circuit, and arranged to couple the first voltage-divided signal into the second voltage-divided signal to generate a coupling signal; and a control circuit arranged to generate a control signal at least according to the coupling signal and a feedback signal to control a duty cycle of a transistor, wherein the feedback is generated by the transistor. | 03-13-2014 |
20140070705 | LED DRIVING APPARATUS AND OPERATING METHOD THEREOF - A LED driving apparatus and an operating method thereof are disclosed. The LED driving apparatus includes an output stage, a reference voltage regulator, a first input resistor, a second input resistor, and a controller. The output stage includes at least one LED. The reference voltage regulator is coupled to an input voltage and used to receive the input voltage and output a reference voltage signal. One end of the first input resistor is coupled to a node. One end of the second input resistor is coupled to the node, and the other end of the second input resistor is coupled to ground. The controller receives the reference voltage signal from the reference voltage regulator and receives a divided voltage signal from the node respectively, and outputs a setting voltage signal to the output stage. | 03-13-2014 |
20140062994 | TIMING CONTROLLER, DISPLAY DEVICE AND DRIVING METHOD THEREOF - The present invention discloses a timing controller including a driving signal generation module, a time-locking module, and a first logic circuit. The driving signal generation module generates a first isolation signal. The time-locking module detects whether or not all of a plurality of source driving units of a source driver lock a timing signal. The first logic circuit generates a second isolation signal, and adjusts the second isolation signal according to the output status of the first isolation signal. The gate driver selectively outputs a plurality of gate driving signals to a plurality of gate driving units of the gate driver according to the output status of the second isolation signal. | 03-06-2014 |
20140049300 | POWER-ON RESET CIRCUIT - A power on reset circuit is capable of changing logic level of reset signal at different threshold voltages. | 02-20-2014 |
20140028641 | DRIVING CIRCUIT AND OPERATING METHOD THEREOF - The invention provides a driving circuit applied in a LCD apparatus. The driving circuit includes N first channels, N second channels, 2N first switching units, and 2N second switching units. N is a positive integer and N≧2. N second channels correspond to N first channels. When the driving circuit is operated under a first operation mode, N first switching units in the N first channels switch to connect with the corresponding N second channels, and the other N first switching units in the N second channels switch to connect with the corresponding N first channels according to a control signal respectively. N second switching units in the N first channels switch to connect with the corresponding N second channels, and the other N second switching units in the N second channels switch to connect with the corresponding N first channels according to a control signal respectively. | 01-30-2014 |
20140028622 | TOUCH INPUT ELECTRONIC DEVICE - An touch input electronic device includes: a touch input device; a clock generation circuit, generating a first clock and a second clock; a touch sensing circuit, coupled to the touch input device, the touch sensing circuit operated under the first clock; a logic circuit, receiving a sensing output signal from the touch sensing circuit, the logic circuit operated under the second clock; and a conversion circuit, outputting an output voltage under control of the logic circuit, the output voltage coupled to the touch sensing circuit, the conversion circuit operated under the second clock. In response to the sensing output signal from the touch sensing circuit, the logic circuit controls the conversion circuit to adjust the output voltage to detect a capacitance variance of the touch input device. | 01-30-2014 |
20140015815 | DISPLAY DEVICE AND SOURCE DRIVER THEREOF - The present invention discloses a display device and its source driver comprising a plurality of data lines, a selection module, and a plurality of channel groups. The selection module receives a plurality of first data signals from the data lines, rearranges the first data signals in a first mode or a second mode according to a mode control signal, and outputs a plurality of second data signals accordingly. The channel groups transmit the second data signals outputted by the selection module, and each channel group has a first channel unit and a second channel unit. The first channel unit and the second channel unit of any of the channel groups respectively receives the different second data signals in the first mode, and the first channel unit and the second channel unit of any of the channel groups respectively receives the same second data signal in the second mode. | 01-16-2014 |
20140015588 | LEVEL SHIFTER - A level shifter is disclosed and includes at least four Type 1 transistors and at least four Type 2 transistors. The sources of several Type 1 transistors are electrically connected to a first voltage terminal while the sources of several Type 2 transistors are connected to a second voltage terminal. The level shifter receive an input signal and outputs a logically equivalent output signal with higher voltage, wherein the voltage of the output signal is between the voltages of the first voltage terminal and the second voltage terminal. | 01-16-2014 |
20130328595 | DRIVING CIRCUIT, DRIVING METHOD, AND STORING METHOD - A driving circuit includes at least one output end, at least one driving voltage module, and at least one signal module. The output end receives and outputs an analog voltage. The at least one driving voltage module is connected with the at least one output end and generates a driving voltage, wherein the driving voltage module determines a voltage value of an output voltage according to a relation between an analog voltage and the driving voltage and transmits the output voltage to the at least one output end. The at least one signal module is connected with the at least one output end and outputs an analog data according to the analog voltage, wherein the at least one driving voltage module stores a residual voltage of the at least one signal module when the at least one signal module converts the analog voltage and the analog voltage is larger than the driving voltage. | 12-12-2013 |
20130278143 | DRIVING CIRCUIT - A driving circuit includes a plurality of light-emitting units, a plurality of switches, and a bias current module, wherein the light-emitting units are coupled with each other in series and are driven with an input voltage varying according to a frequency. Each switch has a reference voltage and a critical activation voltage and includes a light-emitting end and a bias end opposite to the light-emitting end, wherein the light-emitting end is coupled with the light-emitting units, and the bias ends of the switches are coupled with each other. The bias current module is coupled with the bias ends of the switches and has an operating bias voltage varying according to the frequency, wherein each switch is driven to be activated or to be deactivated according to a relation of the critical activation voltage and a difference between the reference voltage and the operating bias voltage. | 10-24-2013 |
20130271398 | METHOD OF CONTROLLING NOISE PROCESSING CIRCUIT OF TOUCH PANEL AND RELATED NOISE PROCESSING APPARATUS - The present invention provides a method of controlling a noise processing circuit of a touch panel and a related noise signal processing apparatus. At first, the present invention detects whether the touch panel is interfered with by noise. Then, according to whether the noise interferes with the touch panel, the noise processing circuit is controlled to be activated or not activated. Therefore, the noise processing circuit can be turned off if it is unnecessary, thereby to reduce the workload due to the noise processing. | 10-17-2013 |
20130249086 | CHIP STRUCTURE, CHIP BONDING STRUCTURE USING THE SAME, AND MANUFACTURING METHOD THEREOF - A chip structure, a chip bonding structure, and manufacturing methods thereof are provided. The chip structure includes a chip, a plurality of bumps, and an insulation layer. The bumps are disposed on the chip. Each bump has a first bump portion and a second bump portion connected to each other, wherein the first bump portion and the second bump portion have different activities. The bumps are subjected to chemical reaction to form an insulation layer on the surface of one of the first bump portion and the second bump portion which has higher activity, so as to avoid short-circuit between the adjacent bumps. | 09-26-2013 |
20130241904 | DRIVING CIRCUIT AND DATA TRANSMITTING METHOD THEREOF - A driving circuit and a data transmitting data method thereof are disclosed. The data transmitting method includes: according to an input control signal, selectively transmitting a plurality digital data to a plurality of channels, wherein the channels include a first channel and a second channel, and the first channel and the second channel respectively have a negative conversion unit and a positive conversion unit; by means of the negative conversion unit or the positive conversion unit converting the digital data into a plurality of negative analog data or a plurality of positive analog data; and according to a switching control signal, by means of a switching unit selectively switching the negative analog data or the positive analog data from its corresponding channel to another channel. | 09-19-2013 |
20130241851 | ELECTRODE UNIT WITH PERIMETER-LENGTHENED TOUCH-SENSING PATTERN FOR TOUCH-SENSING ELEMENT LOCATED AT FRINGES OF TOUCH PANEL - An electrode unit on a touch-sensing element includes a first electrode, a second electrode, and a plurality of fifth conductive elements. The first electrode includes a first conductive element and a plurality of second conductive elements. The first conductive element has a plurality of first funnel-shaped notches. The plurality of second conductive elements extends from the first conductive element. The second electrode includes a third conductive element and a plurality of fourth conductive elements. The third conductive element has a plurality of second funnel-shaped notches. The plurality of fourth conductive elements extends from the third conductive element. The plurality of fifth conductive elements extends from the third conductive element. | 09-19-2013 |
20130241648 | DRIVING CIRCUIT, OPERATIONAL AMPLIFIER, AND DATA TRANSMITTING METHOD THEREOF - A data transmitting method is provided, wherein an operational amplifier is coupled with a channel and includes a positive switch, a negative switch, and a coupling end; the positive switch includes a positive control unit and a positive switch unit; the negative switch includes a negative control unit and a negative switch unit. The data transmitting method includes: transmitting an analog data to a first node and a second node from the coupling end; and by the positive control unit and the negative control unit, respectively according to a positive control signal and a negative control signal, selectively activating or deactivating the positive switch unit and the negative switch unit to control transmission of the analog data to an output end, wherein the output end is coupled between the negative switch unit and the positive switch unit. | 09-19-2013 |
20130241623 | LEVEL SHIFT CIRCUIT - A level shift circuit includes a first input terminal, a second input terminal, a first output terminal, a second output terminal, a latch-type level shifter, a first current source and a second current source. The first input terminal receives an input signal; the second input terminal receives an inverse signal of the input signal; the first output terminal outputs an output signal; and the second output terminal outputs an inverse signal of the output signal. The latch-type level shifter is connected to the first input terminal, the second input terminal, the first output terminal and the second output terminal. The first current source is connected between a first high voltage input terminal of the latch-type level shifter and a voltage source. The second current source is connected between a second high voltage input terminal of the latch-type level shifter and the voltage source. | 09-19-2013 |
20130240342 | ELECTRODE UNIT WITH PERIMETER-LENGTHENED TOUCH-SENSING PATTERN FOR TOUCH-SENSING ELEMENT LOCATED AT FRINGES OF TOUCH PANEL - An electrode unit on a touch-sensing element includes a first electrode and a second electrode. The first electrode includes a first conductive element; and a plurality of second conductive elements extending from the first conductive element in directions in parallel with a first direction within a specific range. The second electrode includes a third conductive element and a plurality of fourth conductive elements extending from the third conductive element in directions in parallel with a second direction within a specific range. | 09-19-2013 |
20130235007 | SOURCE DRIVER - A source driver applied in a liquid crystal display is disclosed. The source driver at least includes a first pair of channels, a second pair of channels, two P-type digital/analog converting modules, two N-type digital/analog converting modules, two multiplexers, two polarization multiplexers, and four amplifying and buffer modules. The first pair of channels includes a first channel and a second channel which are adjacent, and the second pair of channels includes a third channel and a four channel which are adjacent. The two P-type digital/analog converting modules correspond to a first set of gamma values, and the two N-type digital/analog converting modules correspond to a second set of gamma values. The first pair of channels shares the two P-type digital/analog converting modules and the second pair of channels shares the two N-type digital/analog converting modules to save the used chip area. | 09-12-2013 |
20130181963 | DRIVING APPARATUS - A driving apparatus applied in a liquid crystal display are disclosed. Its first channel includes a first latching module, a first level-shifting module, a P-type digital/analog converting module, a first R | 07-18-2013 |
20130181956 | DRIVING APPARATUS - A driving apparatus applied in a liquid crystal display are disclosed. Its first channel includes a first latching module, a first level-shifting module, a P-type digital/analog converting module, and a first R | 07-18-2013 |
20130094558 | SAMPLING PHASE SELECTION METHOD FOR A STREAM OF DATA BITS - A sampling phase selection method for a data stream is provided, wherein the data stream has a variable data rate in a fixed time period. The method comprises generating a calibration signal, wherein the time interval of the calibration signal is longer than the fixed time period of the data stream, generating a first clock sequence and a subsequent second clock sequence, wherein the first and the second clock sequence are composed of a plurality of continuous clock phases and the number of the clock phases of the first clock sequence are the same as that of the clock phases of the second clock sequence, selecting one of the phases of the first and the second clock sequence, in turn, to provide a sampling phase, performing a plurality of samplings on the data stream to generate a flag signal, and selecting a final sampling phase according to the flag signals with different sampling phases. | 04-18-2013 |
20130082913 | VOLTAGE SELECTION APPARATUS AND VOLTAGE SELECTION METHOD - A voltage selection apparatus and a voltage selection method applied in a driving circuit of a liquid crystal display are disclosed. The voltage selection apparatus includes a generating module, a selection module, and a setting module. The generating module generates a first curve, a second curve, and a third curve corresponding to gamma curves of R pixel, G pixel, and B pixel of the liquid crystal display under different divided voltages respectively. The selection module selects at least two common curves from the first curve, the second curve, and the third curve, and the at least two common curves have a shared region corresponding to a common divided voltage range. The setting module sets at least two pixels corresponding to the at least two common curves to use a voltage dividing resistor string in the common divided voltage range to provide voltage dividing points. | 04-04-2013 |
20130076377 | CAPACITANCE MEASUREMENT CIRCUIT AND METHOD THEREFOR - A capacitance measurement circuit includes an operation amplifier; a reference capacitor having a first terminal coupled to a first input terminal of the operation amplifier and a second terminal selectively coupled to a first or second reference voltage; a sensor capacitor having a first terminal coupled to a second input terminal of the operation amplifier and a second terminal selectively coupled to the first or second reference voltage; an approximation unit having an output terminal and an input terminal coupled to an output terminal of the operation amplifier; a conversion unit having an output terminal and an input terminal coupled to the output terminal of the approximation unit; and a coupling capacitor having a first terminal coupled to the first or second input terminal of the operation amplifier and a second terminal coupled to the output terminal of the conversion unit. | 03-28-2013 |
20130076376 | CAPACITANCE MEASUREMENT CIRCUIT AND METHOD THEREFOR - A capacitance measurement circuit includes an operation amplifier; a reference capacitor having a first terminal coupled to a first input terminal of the operation amplifier and a second terminal selectively coupled to a first or second reference voltage; a sensor capacitor having a first terminal coupled to a second input terminal of the operation amplifier and a second terminal selectively coupled to the first or second reference voltage; an approximation unit having an output terminal and an input terminal coupled to an output terminal of the operation amplifier; a conversion unit having an output terminal and an input terminal coupled to the output terminal of the approximation unit; and a coupling capacitor having a first terminal coupled to the first or second input terminal of the operation amplifier and a second terminal coupled to the output terminal of the conversion unit. | 03-28-2013 |
20130058445 | SAMPLING PHASE SELECTION METHOD FOR A STREAM OF DATA BITS - The current disclosure discloses a sampling phase selection method for a data stream, wherein the data stream has a variable data rate in a fixed time period. The method comprises the following steps: generating M section signals with the same time interval during the fixed time period of the data stream, generating N continuous clock phases according to a rising edge of each of the section signals, selecting one of the continuous clock phases corresponding to the different section signals in turn to provide a sampling phase, performing a plurality of samplings on the data stream to generate a flag signal, repeating the selecting and the sampling steps to generate N flag signals corresponding to the different section signals, and selecting a final sampling phase according to the N flag signals corresponding to the different section signals. | 03-07-2013 |
20130044064 | TOUCH CONTROL SENSING APPARATUS AND METHOD THEREOF - A touch control sensing apparatus comprises a logic control module configured to generate a plurality of control signals, a driving sensing control module having a parallel sensing control unit coupled to the logic control module, a signal comparing module having at least one amplifier and a signal selecting unit coupled to the logic control module, and a parallel to serial control module coupled to the logic control module and an analog-digital converter, wherein the analog-digital converter is coupled between the logic control module and the parallel to serial control module. | 02-21-2013 |
20130038582 | DEVICE WITH AUTOMATIC DE-SKEW CAPABILITY - The present invention discloses a device with an automatic de-skew capability, comprising a data signal delay module, a plurality of data registers, and a delay data signal selection module. The present device outputs an optimal delay data signal and a clock signal to a source driver to drive a display panel. | 02-14-2013 |
20130038367 | DEVICE WITH AUTOMATIC DE-SKEW CAPABILITY - A source driver with an automatic de-skew capability is configured to receive a data signal and a clock signal from a timing controller, which are configured to drive a liquid crystal display panel. The source driver includes a signal delay unit, a setup time register, a hold time register, a first signal delay unit, a second delay unit and a logic circuit. In one embodiment of the present disclosure, the first data delay signal is configured to sample the second clock delay signal and the second data delay signal is configured to sample the first clock delay signal. | 02-14-2013 |
20130038233 | LED DRIVER - A light-emitting diode (LED) driver is provided. The LED driver, providing a drive voltage for driving an LED circuit according to an input voltage, includes a current regulator, a dimming signal generator, and a boost converter. In response to a pulse width modulation (PWM) dimming signal, the current regulator enables the LED circuit in a first PWM period and disables the LED circuit outside the first PWM period. The dimming generator generates a prolonged PWM dimming signal according to the PWM dimming signal. The prolonged PWM dimming signal has a prolonged period, a length of which is associated with a level of an input voltage. In response to the prolonged PWM dimming signal, the boost converter is enabled in a second PWM period and maintains a level of the drive voltage according to the input voltage. | 02-14-2013 |
20130033441 | TOUCH INPUT DEVICE FOR SWITCHING DRIVING SIGNALS - A touch input device for switching driving signals includes a touch panel and a panel driving circuit for driving the touch panel. The panel driving circuit includes a selecting circuit, a driving signal generating circuit, and a touch sensing circuit. The driving signal generating circuit transmits a driving signal to the touch panel. The selecting circuit includes a multiplexer, which controls sensing lines that do not comprise either an X directional measuring channel or a Y directional measuring channel to be grounded or floating in accordance with the driving signal. | 02-07-2013 |
20130027823 | ELECTRIC APPARATUS WITH ESD PROTECTION EFFECT - An electric apparatus with ESD protection effect is provided. The electric apparatus comprises a high-side unit, a low-side unit, and a level shifter. The high-side unit comprises a first pad and a second pad. The low-side unit comprises a third pad and a fourth pad. The level shifter is connected between the first pad and the fourth pad. The level shifter comprises a first resistor, a clamp element, a second resistor, and an N-type transistor. The first resistor is connected between the first pad and a first node. The clamp element is connected between the first pad and a second node. The second resistor is connected between the first node and the second node. The N-type transistor has a source and a body connected to the fourth pad, a drain connected to the first node, and a gate connected to the low-side unit. | 01-31-2013 |
20130027317 | METHOD FOR PROVIDING DIGITAL SENSING DATA FOR TOUCH PANEL APPARATUS - A method for providing digital sensing data for a touch panel apparatus comprises the steps of: collecting a stream of digital sensing data from a plurality of operational amplifiers of a touch panel apparatus; generating a first revised digital datum to replace a first digital datum by summing the first digital datum and a digital datum following the first digital datum; generating a second revised digital datum to replace a second digital datum by summing the first revised digital datum and the second digital datum, wherein the second digital datum follows the first revised digital datum; and continuing to generate revised digital sensing data until a last revised digital datum is generated. | 01-31-2013 |
20130009885 | TOUCH CONTROL SENSING APPARATUS AND METHOD THEREOF - A touch control sensing apparatus comprises a logic control module configured to generate a plurality of control signals, a driving sensing control module having a parallel sensing control unit coupled to the logic control module, a signal comparing module having at least one amplifier coupled to the logic control module, a parallel to serial control module coupled to the logic control module, and an analog digital convertor coupled between the logic control module and the parallel to serial control module. | 01-10-2013 |
20120319970 | DETECTION CIRCUIT AND DETECTION METHOD FOR TOUCH-SENSING PANEL - A detection circuit for a touch-sensing panel includes a successive approximation register analog-to-digital converter (SAR-ADC) and a timing control device. The SAR-ADC is configured to detect a coupling voltage to generate a multi-bit digital detection value. The timing control device is configured to control a detection time of each bit for the SAR-ADC. | 12-20-2012 |
20120319931 | DRIVING CIRCUIT OF A DISPLAY - The current disclosure discloses a driving circuit of a liquid crystal display. The driving circuit comprises a P-DAC, an N-DAC, a first input amplifier, a second input amplifier, a first output amplifier, a second output amplifier, a first switching circuit, a second switching circuit and a third switching circuit. The driving circuit is able to provide better brightness compensation for a corresponding pixel electrode and reduce the time needed to drive the corresponding pixel electrode. | 12-20-2012 |
20120306828 | DRIVING CIRCUIT AND OPERATING METHOD THEREOF - The invention provides a driving circuit applied in a LCD apparatus and operating method thereof. The driving circuit includes at least one first channel, at least one second channel, a timing controller, and a panel driver. The timing controller includes a digital signal switching unit. The digital signal switching unit selectively performs a polarity exchange to a first digital data signal and a second digital data signal according to a control signal. The panel driver includes an analog signal switching unit. The analog signal switching unit performs a switching corresponding to the polarity exchange according to the control signal to make the driving circuit selectively operated under a first operation mode or a second operation mode. | 12-06-2012 |
20120306539 | FRACTIONAL-N CLOCK GENERATOR AND METHOD THEREOF - A fractional-n clock generator includes a first digital delay line module, a second delay line module, an address generator and a selector. The first delay line module receives a frequency-divided clock signal and generates first delay signals having different phase differences with respect to the clock signal. The second delay line module receives the clock signal and generates second delay signals having different phase differences with respect to the clock signal. The address generator selects one of the first delay signals as an output signal of the first delay line module and one of the second delay signals as an output signal of the second delay line module. The selector selects one of the output signals of the first delay line module and the second delay line module as an output signal. A delay of the first delay line module is different from that of the second delay line module. | 12-06-2012 |
20120280966 | DISPLAY DRIVER AND FLICKER SUPPRESSION DEVICE THEREOF - A flicker suppression device applied in a display driver for preventing the output image data of the display driver from being affected by an electrostatic discharge (ESD) event is provided. The flicker suppression device includes an ESD detector and an output stage controller. The ESD detector is coupled to a first power wire of the display driver for determining whether an ESD level shift event occurs to the first system reference voltage signal on the first power wire. If so, a control signal corresponding to the first level is provided. The output stage controller controls the output stage circuit of the display driver to be in a high impedance state in response to the control signal corresponding to the first level to avoid the output stage circuit outputting an output image data that has been affected by an ESD event. | 11-08-2012 |
20120280727 | POWER-ON RESET CIRCUIT - A power on reset circuit is capable of changing logic level of reset signal at different threshold voltages. | 11-08-2012 |
20120269308 | SAMPLING CLOCK SELECTION MODULE OF SERIAL DATA STREAM - A sampling clock selection module for a serial data stream is disclosed. The sampling clock selection module includes a multi-phase generation circuit, a sampling circuit, a comparison unit and a logic operation unit. The multi-phase generation circuit generates a plurality of non-overlapping clock phases derived from a reference clock signal. The phase selection circuit selects a sampling clock phase under a calibration mode. The sampling circuit performs sampling on the serial data stream a plurality of times to generate a plurality of sampled values in response to the sampling clock phase. The comparison unit compares the sampled values with the serial data stream so as to update a plurality of flag signals. The logic operation unit performs a logic operation on the flag signals so as to select a sampling clock phase under a normal operation mode from the clock phases. | 10-25-2012 |
20120262395 | METHOD OF UPDATING BASELINE OUTPUT VALUES OF TOUCH PANEL - An updating method for baseline output values of a touch-sensing panel is disclosed. The touch-sensing panel includes a plurality of X-directional lines and a plurality of Y-directional lines. The X-directional lines and Y-directional lines are arranged intersecting one another so as to form a sensing grid with a plurality of sensing nodes. The method includes the following steps: performing a first scan when the touch-sensing panel is not touched so as to obtain a plurality of first baseline output values; performing a second scan after the touch-sensing panel is touched so as to obtain plurality of touch output values; and updating the baseline output values on the sensing nodes based on a threshold, the first baseline output values and the touch output values. | 10-18-2012 |
20120256855 | DRIVING AND SENSING METHOD FOR TOUCH-SENSING INPUT DEVICE, AND MODULE USING THE SAME - The disclosure provides a driving and sensing method for a touch-sensing input device including a touch-sensing panel module and a liquid crystal display panel module. The touch-sensing panel module includes a touch-sensing panel and a control device, wherein the touch-sensing panel includes a plurality of X-directional lines and Y-directional lines arranged intersecting one another. The method includes steps of generating a spread spectrum clock signal using the control device; generating a driving signal and a sensing signal based on the spread spectrum clock signal; outputting the driving signal to one of the X-directional lines or one of the Y-directional lines; receiving voltages on the corresponding Y-directional line or X-directional line in response to the sensing signal and converting the same to a digital signal; and determining a touch status of the touch-sensing panel based on the digital signal. | 10-11-2012 |
20120256853 | DETECTION METHOD FOR TOUCH INPUT DEVICE - The present invention discloses a detection method for a touch input device. The touch input device includes a touch panel and a control device. The touch panel includes a plurality of X-directional lines and a plurality of Y-directional lines, which are arranged intersecting one another. The method includes the steps of: configuring the X-directional lines as scan lines and the Y-directional lines as sense lines; dividing the scan lines into a plurality of groups of scan lines; during each scanning operation, outputting a driving signal to one of the plurality of groups of scan lines; after each scanning operation, receiving voltages on the sense lines and converting the voltages into a plurality of digital signals; storing the digital signals into a storage unit; and determining a touch status based on the digital signals. | 10-11-2012 |
20120249457 | UNGROUNDED TOUCH-SENSING INPUT DEVICE AND CONTROL DEVICE THEREOF - A control device of an ungrounded touch-sensing panel is disclosed. The touch-sensing panel includes a plurality of first-directional lines and a plurality of second-directional lines arranged intersecting one another. The control device includes a selection circuit, at least one capacitor, a driving signal generation circuit, an analog to digital conversion module and a signal processing unit. The selection circuit is configured to select at least one scan line and at least one sense line from the first-directional lines and the second-directional lines during each scanning operation. After the new scan line and sense line are generated, each capacitor is coupled between each scan line and each sense line selected by the selection circuit to increase a total capacitance between the scan line and the sense line. | 10-04-2012 |
20120229483 | PANEL DRIVING DEVICE AND DISPLAY DEVICE HAVING THE SAME - A panel driving device for driving a display panel including N data lines is disclosed. The panel driving device includes a memory array and a source driver. The memory array includes M memory blocks, a controller and an output unit. Each memory block includes N memory units. The controller is configured to divide serial image data into M groups of sub-image data and write each group of sub-image data into the corresponding memory block sequentially, wherein each group of sub-image data has N sub-image data. The output unit is configured to output the data in the M memory blocks sequentially in a time division manner in response to a selection signal. The source driver includes N driving units having the same configuration. After the driving unit receives the time-divided data output from the output unit, signal processing is performed to generate an image signal to be output to the corresponding data line. | 09-13-2012 |
20120200358 | COMPARATOR - A comparator includes: a wide-swing operation transconductance amplifier (OTA), having first and second differential input pairs for receiving first and second differential input signals respectively, the wide-swing OTA generating first and second intermediate output voltages in comparing the first with the second differential input signals; a current switch group; a current mirror group, wherein when an input common mode voltage of the first and the second differential input signal tends to one of a first and a second reference voltage, one of the first and the second differential input pair is turned off, and the current switch group and the current mirror group compensate a current flowing through the other of the first and the second differential input pair; and a decision circuit coupled to the wide-swing OTA, for enlarging a voltage difference between the first and the second intermediate output voltage to output a voltage comparison output signal. | 08-09-2012 |
20120182255 | CONTROL DEVICE FOR A TOUCH PANEL - The present invention discloses a control device for a touch panel that comprises a plurality of X-directional sensing lines and Y-directional sensing lines. The X-directional sensing lines and Y-directional sensing lines are arranged in an interlaced manner. The control device comprises a clock generation circuit, a selection module, a driving signal generation circuit, a differential detection module, and a digital-to-analog conversion module. The selection module selects a first sensing line and a second sensing line from the X-directional sensing lines or Y-directional sensing lines. The driving signal generation circuit generates first and second driving signals to the first and second sensing lines, respectively. The digital to analog conversion module selectively outputs a first voltage to the first sensing line or outputs a second voltage to the second sensing line. The operation frequency of the touch panel can be increased using the control device of the present invention. | 07-19-2012 |
20120176425 | SOURCE DRIVING APPARATUS AND DRIVING METHOD THEREOF - A source driving apparatus and a driving method thereof are provided. The source driving apparatus comprises an encoder and a source driver. The encoder encodes a video data with n bits to the encoded data according to encoding rules, such that the bit change in two adjacent grays is less than n. The source driver outputs a pixel voltage corresponding to the video data according to the encoded data. | 07-12-2012 |
20120176326 | CONTROL DEVICE FOR TOUCH PANEL AND SIGNAL PROCESSING METHOD THEREOF - The present invention discloses a control device for a touch panel. The touch panel comprises a plurality of X-directional sensing lines and a plurality of Y-directional sensing lines arranged in a staggered manner. The control device comprises a clock generation circuit, a selection module, an analog to digital conversion circuit, and a control unit. The selection module selects sensing lines to be measured from the X-directional sensing lines and Y-directional sensing lines. The control unit controls the operation mode of the analog to digital conversion circuit. The analog to digital conversion circuit outputs an n-bit digital signal when it operates in a normal mode, and outputs an m-bit digital signal when it operates in a detecting mode, wherein n>m. According to the control device of the present invention, valid data is output in the presence of noise. | 07-12-2012 |
20120176168 | SIGNAL CIRCUIT - A signal circuit includes a clock terminal for transmitting a reference clock and a data terminal for transmitting an input/output data. In an embodiment, the frequency of the reference clock is one-eighth of the bit rate of the input/output data. | 07-12-2012 |
20120119854 | SEGMENTED TRANSMISSION SIGNAL CIRCUIT - A segmented transmission signal circuit is provided with a parallel bus of data transmission. The bus includes a plurality of sections, each section transmits a corresponding parallel data of multiple bits, and the parallel data corresponding to different sections are in different bit orders. | 05-17-2012 |
20120112330 | SEMICONDUCTOR DEVICE - A semiconductor device, such as a semiconductor device of chip on film package, is provided. The semiconductor device includes at least an integrated circuit formed on a film base, each integrated circuit includes a chip and a plurality of leads formed interior to a boundary of a predetermined range, each lead is formed with a predetermined distance from the boundary. While the integrated circuit is punched from the film base along the boundary, conductive residue of leads left on the puncher is therefore reduced or avoided. | 05-10-2012 |
20120098786 | Control Device for a Touch Panel - A touch panel includes a plurality of X-directional sensing lines and a plurality of Y-directional sensing lines. The X-directional sensing lines and the Y-directional sensing lines are arranged in a staggered manner. The control device includes a clock generation circuit, a selection module, a drive signal generation circuit, a digital to analog conversion module, first and second capacitors and a differential detection circuit. The X-directional sensing lines and Y-directional sensing lines on the touch panel operate according to a predetermined scanning sequence. According to the control device and the predetermined scanning sequence of the present invention, the sensing speed of the touch panel can be improved. | 04-26-2012 |
20120068724 | CAPACITANCE EVALUATION CIRCUIT AND ELECTRONIC DEVICE USING THE SAME - A capacitance evaluation circuit includes a capacitive voltage divider, an analog-to-digital converter (ADC) and a processing module. The capacitive voltage divider includes a switch circuit, a known capacitor and a capacitor under test. The switch circuit is controlled by first and second clock signals. A voltage variation at a first terminal of the known capacitor is coupled to a first terminal of the capacitor under test based on a conduction state of the switch circuit. The ADC converts a voltage on the first terminal of the capacitor under test into a digital signal. The processing module detects a capacitance and a capacitance variation of the capacitor under test according to the digital signal from the ADC and a parameter of the ADC. | 03-22-2012 |
20120038573 | Touch Input Device and Scanning Method Thereof - A touch panel includes a plurality of X-directional sensing lines and a plurality of Y-directional sensing lines. The X-directional sensing lines and the Y-directional sensing lines are arranged in a staggered manner, and a plurality of mutual capacitors are formed between every X-directional sensing line and every Y-directional sensing line. According to one embodiment of the present invention, the scanning method first selects the number of sensing lines to be measured to determine a measurement channel. Driving signals are applied to other sensing lines excluding the measurement channel in scanning procedures. After the driving signals are applied, two voltages at nodes of the measurement channel are detected to obtain a touch position on the touch panel. | 02-16-2012 |
20110285311 | Control Circuit and Light Emitting Diode Driver and Method Using Thereof - A control circuit applied in a light emitting diode (LED) driver includes a counter, a sample circuit, and a signal source. The counter counts a parameter indicating the duty cycle width of a dimming signal in response to a front edge of the dimming signal. The sample circuit obtains a sample signal by means of sampling the most significant bit (MSB) of the parameter in response to the rear edge of the dimming signal. The duty cycle width is determined to be greater than a threshold value and smaller than that when the sample signal corresponds with a terminal value and an initial value, respectively. The signal source provides a reference voltage corresponding to first level and that corresponding to second level, higher than the first level, to drive a boost converter of the LED driver in response to the terminal value and the initial value, respectively. | 11-24-2011 |
20110254962 | CONTROLLING APPARATUS AND CONTROLLING METHOD FOR SIGNAL OUTPUTING CIRCUIT AND VIDEO SYSTEM - The invention discloses a controlling apparatus for a signal outputting circuit in an electronic system. The controlling apparatus includes a detecting circuit, a switch, and a controlling circuit. The detecting circuit is used for detecting whether the electronic system has an abnormal condition. The switch is electrically connected between a signal receiving terminal and the signal outputting circuit. The controlling circuit is electrically connected between the detecting circuit and the switch. Once the detecting circuit detects that the electronic system has the abnormal condition, the controlling circuit sets the switch into a high-impedance state. | 10-20-2011 |
20110242049 | Touch Input Electronic Device - An touch input electronic device includes: a touch input device; a clock generation circuit, generating a first clock and a second clock; a touch sensing circuit, coupled to the touch input device, the touch sensing circuit operated under the first clock; a logic circuit, receiving a sensing output signal from the touch sensing circuit, the logic circuit operated under the second clock; and a conversion circuit, outputting an output voltage under control of the logic circuit, the output voltage coupled to the touch sensing circuit, the conversion circuit operated under the second clock. In response to the sensing output signal from the touch sensing circuit, the logic circuit controls the conversion circuit to adjust the output voltage to detect a capacitance variance of the touch input device. | 10-06-2011 |
20110210938 | Capacitance Offset Compensation for Electronic Device - An electronic device includes: a touch input device, a touch sensing circuit coupled to the touch input device and a capacitance offset compensation circuit. The capacitance offset compensation circuit includes: a first offset compensation capacitance array, coupled to a reference voltage or a driving signal in response to a control signal from the touch sensing circuit, coupled to one of a first coupling voltage and a second coupling voltage from the touch input device in response to the control signal. The first offset compensation capacitance array adjusts an output equivalent capacitance in response to the control signal, for compensating at least one of a GND parasitic capacitance and a cross coupling capacitance of the touch input device. | 09-01-2011 |
20110122102 | Driving Circuit and Output Buffer - An output buffer including a first switch circuit and a buffer is provided. The first switch circuit receives first and second input signals. The buffer circuit includes first and second input stages, first and second output stages and a second switch circuit. The first and the second input stages are coupled to the first switch circuit. The first and the second output stages are coupled to the second switch circuit. The second switch circuit, coupled to the first and the second input stages and the first and the second output stages, selectively couples one of first and the second input stages to the first output stage and selectively couples the other to the second output stage. The first switch circuit further selectively provides one of the first and the second input signals to the first input stage and selectively provides the other to the second input stage. | 05-26-2011 |
20110115503 | Capacitance Measurement Circuit and Method Therefor - A capacitance measurement circuit includes: a reference capacitor selectively coupled to a first reference voltage or a second reference voltage; a sensor capacitor selectively coupled to the first reference voltage or the second reference voltage; an operation amplifier coupled to the reference capacitor, the sensor capacitor and a third reference voltage; an approximation unit coupled to the operation amplifier; and a conversion unit coupled to the operation amplifier and the approximation unit. The reference capacitor and the sensor capacitor respectively couple a first charge amount and a second charge amount to a first input terminal of the operational amplifier to conduct an input voltage. The conversion unit couples a third charge amount to the first input terminal of the operation amplifier or charges/discharges the first input terminal of the operation amplifier until the input voltage approximates the third reference voltage. | 05-19-2011 |
20110102404 | Low Power Driving Method for a Display Panel and Driving Circuit Therefor - A low power driving method for a display panel and a driving circuit therefor. When the voltage of a corresponding common electrode of a pixel in a pixel array is changed from one of the first voltage and the second voltage to the other thereof according to a polarity signal, the voltage of the corresponding pixel electrode of the pixel is driven. In an embodiment, a data code for the pixel and the polarity signal are utilized to predict a trend of the corresponding target voltage of the data code, and the voltage of the pixel electrode or the data line is changed to a voltage close to the target voltage of the pixel according to the prediction result. Thus, the swing range of the voltage of the data line can be efficiently reduced, and power saving and reduction in transition time can also be achieved. | 05-05-2011 |
20110074446 | Capacitance Measurement Circuit and Method Therefor - A capacitance measurement circuit includes an operation amplifier; a reference capacitor having a first terminal coupled to a first input terminal of the operation amplifier and a second terminal selectively coupled to a first or second reference voltage; a sensor capacitor having a first terminal coupled to a second input terminal of the operation amplifier and a second terminal selectively coupled to the first or second reference voltage; an approximation unit having an output terminal and an input terminal coupled to an output terminal of the operation amplifier; a conversion unit having an output terminal and an input terminal coupled to the output terminal of the approximation unit; and a coupling capacitor having a first terminal coupled to the first or second input terminal of the operation amplifier and a second terminal coupled to the output terminal of the conversion unit. | 03-31-2011 |
20110069045 | Driving Circuit, Electronic Display Device Applying the Same and Driving Method Thereof - A driving circuit applied in an electronic display apparatus is provided. The driving circuit includes a first exchange circuit and a first buffer. The first buffer includes first and second input stages, a second exchange circuit and first and second output stages. The first exchange circuit selectively couples a first input signal and a first output signal outputted from the first output stage to one of the first and the second input stages; and selectively couples a second input signal and a second output signal outputted from the second output stage to the other of the first and the second input stages. The second exchange circuit selectively couples the first input stage to one of the first and the second output stages and selectively couples the second input stage to the other of the first and the second output stages. | 03-24-2011 |
20110063249 | TOUCH SENSING APPARATUS AND TOUCH SENSING METHOD - A touch sensing apparatus applied to a capacitance touch panel includes a sensing module, a signal generating module, a comparing module, and a processing module. When a first and a second touch point formed on the capacitance touch panel correspond to two first and second touch pad sets, the sensing module generates a request signal. The signal generating module respectively outputs two test signals with reverse phases to the two first touch pad sets according to the request signal. After the comparing module generates a compared result according to two voltage values corresponding to the two second touch pad sets, the processing module will determine the positions of the first and the second touch point according to the compared result. When touch points are more than two, the touch sensing apparatus repeats the above-mentioned steps until all positions of the touch points are defined and the ghost points are removed. | 03-17-2011 |
20110050664 | APPARATUS AND METHOD FOR GENERATING CHOPPER-STABILIZED SIGNALS - A method for generating chopper-stabilized signals includes the following steps. First, a voltage polarity control signal is received. Next, the voltage polarity control signal is sampled to obtain a sampling signal, and a voltage transformation manner of the voltage polarity inversion of the voltage polarity control signal is judged according to the sampling signal. Then, a frame transformation signal template is obtained according to the voltage transformation manner of the voltage polarity inversion of the voltage polarity control signal and the sampling signal. Next, the frame transformation signal template is compared with the sampling signal and a frame transformation signal is generated. Then, a first chopper-stabilized signal is outputted according to the frame transformation signal and the voltage polarity control signal. | 03-03-2011 |
20110012868 | OPTICAL TOUCH APPARATUS AND OPERATING METHOD THEREOF - An optical touch apparatus includes an inputting interface, an optical module, a light receiving module, and a processing module. The inputting interface includes a surface and a light transmitting unit under the surface. The optical module and the light receiving module are set on a first side and a second side of the inputting interface. The optical module receives an incident beam and generates a plurality of parallel sensing lights according to the incident beam. When the plurality of parallel sensing lights pass the light transmitting unit to the light receiving module, the light receiving module generates a sensing result according to the condition the light receiving module receives the plurality of sensing lights. The processing module determines a touch point position formed on the surface according to the sensing result. | 01-20-2011 |
20100315380 | OPTICAL TOUCH APPARATUS AND OPERATING METHOD THEREOF - An optical touch apparatus is disclosed. The optical touch apparatus comprises a light emitting module, a noise suppressing module, a light sensing module, and a processing module. The light emitting module emits at least one sensing beam, and the at least one sensing beam comprises a plurality of sensing rays. If an emitting angle of a specific sensing ray among the plurality of sensing rays toward a light sensor of the light sensing module is larger than a default value, the noise suppressing module will block the specific sensing ray from emitting into the light sensor. After the light sensing module generates a sensing result according to the condition of the light sensing module receiving the at least one sensing beam, the processing module will determine the position of a touch point according to the sensing result. | 12-16-2010 |
20100277413 | DATA INPUTTING APPARATUS AND ELECTRONIC APPARATUS - A data inputting apparatus includes a plurality of keyswitches, an optical module, a sensing module and a processing module. The keyswitches are disposed on the data inputting apparatus. The optical module is disposed on a first side of the data inputting apparatus and is used for emitting a plurality of lights along a first direction, and the lights are corresponding to the keyswitches respectively. The sensing module is disposed on a second side opposite to the first side and is used for receiving the lights and generating a sensing result. The processing module is coupled to the sensing module. When one of the keyswitches is pressed, one of the lights is blocked by the pressed keyswitch resulting in the sensing module adjusting the sensing result, and the position of the pressed keyswitch is determined by the processing module based on the sensing result. | 11-04-2010 |
20100265216 | OPTICAL TOUCH APPARATUS AND OPERATING METHOD THEREOF - An optical touch apparatus is disclosed. The optical touch apparatus comprises at least one light sensing module and a processing module. The at least one light sensing module is set at a first side of a surface of the optical touch apparatus, and used for receiving at least one light and generating a sensing result according to the condition of receiving the at least one light. The sensing result relates to whether the at least one light is blocked by at least one object above the surface and also relates to a comparing result between the at least one object and a reference region. The reference region is set at an opposite second side of the surface. The processing module determines at least one touch point position corresponding to the at least one object on the surface according to the sensing result. | 10-21-2010 |
20100164929 | SOURCE DRIVER - The invention discloses a source driver. The source driver comprises a plurality of channels and a control module. Each of the plurality of channels comprises an output buffer, an output pad, a driving switch, and a charge sharing switch. The control module is used to control a gate signal of the driving switch or the charge sharing switch in each channel to be changed linearly. By doing so, a peak current generated by the source driver can be lowered to reduce the electromagnetic interference (EMI). | 07-01-2010 |
20100110115 | Frame Rate Control Method and Display Device Using the Same - A frame rate control (FRC) method is provided for driving a number of pixels according to a number of pixels data. The pixels include a number of first color sub-pixels. In this method, the dithering process is performed to the pixels data in two frames according to two basic matrixes respectively. In one of the two frames, the numbers of the first color sub-pixels, driven by the positive pixel voltages and the negative pixel voltages and to which the dithering process has been performed, are the same in substantiality. Further, in the other of the two frames, the numbers of the first color sub-pixels, driven by the positive pixel voltages and the negative pixel voltages and to which the dithering process has been performed, are also the same in substantiality. | 05-06-2010 |
20100108872 | Optical tweezers lifting apparatus - An optical tweezers lifting apparatus is provided. The optical tweezers lifting apparatus includes an optical tweezers and a particle-lifting device. The particle-lifting device includes a substrate and a plurality of electrodes that are disposed on the bottom of a flow path in the substrate. When a dielectrophoresis (DEP) solution with a plurality of floating particles is conducted into the flow path and upon those electrodes and a voltage is applied to these electrodes, these particles would be driven by a negative DEP force to move upward to a specific depth in the flow path. Meanwhile, the optical tweezers of the apparatus is selectively focused at the specific depth in the flow path. | 05-06-2010 |
20100102831 | Capacitance Measurement Circuit and Capacitance Measurement Method Thereof - A capacitance measurement circuit and a capacitance measurement method thereof. The capacitance measurement circuit for measuring a capacitor under test includes a capacitance to time unit, a continuous time integrator and an analog to digital converter. The capacitance to time unit generates a first clock signal and a second clock signal reverse to the first clock signal according to a first charge time of the capacitor under test and a second charge time of a variable capacitor. The continuous time integrator receives the first clock signal and outputs an integral signal according to the first clock signal. When the number of clocks of the second clock signal is equal to a default value, the analog to digital converter outputs a digital signal corresponding to a capacitance difference between the capacitor under test and the variable capacitor according to the integral signal. | 04-29-2010 |
20100097142 | DRIVING CIRCUIT SYSTEM AND METHOD OF ELEVATING SLEW RATE OF OPERATIONAL AMPLIFIER - The invention discloses a driving circuit system and a method of elevating a slew rate of an operational amplifier. The driving circuit system comprises an operational amplifier, a judging module and a bias enhancing module. The operational amplifier has an input stage driven by a bias current. The bias enhancing module is electrically connected to the judging module and the input stage of the operational amplifier respectively. The judging module is used to generate a bias enhancing signal according to an edge-trigger of a control signal. When the bias enhancing module receives the bias enhancing signal, the bias enhancing module provides an additional current, which cooperates with the bias current, for driving the input stage of the operational amplifier, so as to elevating a slew rate of the operational amplifier. | 04-22-2010 |
20100042346 | CAPACITANCE EVALUATION CIRCUIT AND ELECTRONIC DEVICE USING THE SAME - A capacitance evaluation circuit includes a capacitive voltage divider, an analog-to-digital converter (ADC) and a processing module. The capacitive voltage divider includes a switch circuit, a known capacitor and a capacitor under test. The switch circuit is controlled by first and second clock signals. A voltage variation at a first terminal of the known capacitor is coupled to a first terminal of the capacitor under test based on a conduction state of the switch circuit. The ADC converts a voltage on the first terminal of the capacitor under test into a digital signal. The processing module detects a capacitance and a capacitance variation of the capacitor under test according to the digital signal from the ADC and a parameter of the ADC. | 02-18-2010 |
20100026671 | SOURCE DRIVING APPARATUS AND DRIVING METHOD THEREOF - A source driving apparatus and a driving method thereof are provided. The source driving apparatus comprises an encoder and a source driver. The encoder encodes a video data with n bits to the encoded data according to encoding rules, such that the bit change in two adjacent grays is less than n. The source driver outputs a pixel voltage corresponding to the video data according to the encoded data. | 02-04-2010 |
20100013844 | MEMORY AND PIXEL DATA STORING METHOD - A memory includes at least one memory cell. The memory cell includes a first set of bits and a second set of bits for respectively storing first sub-pixel data and second sub-pixel data of pixel data. The first set of bits has a first fail bit. A least significant bit of the first sub-pixel data is stored at the first fail bit. | 01-21-2010 |
20100013502 | EVALUATION CIRCUIT FOR CAPACITANCE AND METHOD THEREOF - In an evaluation method, voltages at ends of a to-be-measured capacitor and a capacitance-adjustable circuit are switched in response to a first set of clock signals so as to adjust an integrated voltage to be a sum of the integrated voltage and a first difference voltage. Next, whether a first control event is received is judged. If not, the previous step is performed. If yes, an integration operation is performed to switch a voltage of an end of a known capacitor in order to adjust the integrated voltage to be a sum of the integrated voltage and a second difference voltage. Next, whether an integrating period ends is judged. If not, the first step is repeated. If yes, a capacitance of the to-be-measured capacitor is obtained according to the number of times that the integration operation is performed in the integrating period and a capacitance of the known capacitor. | 01-21-2010 |
20090323768 | SPREAD SPECTRUM CLOCK SIGNAL GENERATOR - A spread spectrum clock signal generator for spreading an input clock signal into an output clock signal includes a clock signal delay chain for delaying the input clock signal into a delay clock signal group having a plurality of delay clock signals, a modulation controller for outputting a counter clock signal control signal, a clock signal selection circuit for selecting, from the delay clock signal group, a modulation clock signal group having a plurality of modulation clock signals, a programmable counter for generating a counting value according to a counter clock signal, and a clock signal output unit for combining the modulation clock signals into the output clock signal according to the counting value, and further generating the counter clock signal, outputted to the programmable counter, according to the counter clock signal control signal. | 12-31-2009 |
20090303646 | CONTROLLING APPRATUS AND CONTROLLING METHOD FOR SIGNAL OUTPUTING CIRCUIT AND VIDEO SYSTEM - The invention discloses a controlling apparatus for a signal outputting circuit in an electronic system. The controlling apparatus includes a detecting circuit, a switch, and a controlling circuit. The detecting circuit is used for detecting whether the electronic system has an abnormal condition. The switch is electrically connected between a signal receiving terminal and the signal outputting circuit. The controlling circuit is electrically connected between the detecting circuit and the switch. Once the detecting circuit detects that the electronic system has the abnormal condition, the controlling circuit sets the switch into a high-impedance state. | 12-10-2009 |
20090302825 | CURRENT SOURCE - A current source includes a node, a biasing circuit, a loading circuit and a current mirror. The node has a specified voltage. The biasing circuit biases the specified voltage to be a first reference voltage. The loading circuit provides an equivalent resistor across the node and a second reference voltage to generate a reference current. The loading circuit includes a resistor and a metal oxide semiconductor field effect transistor (MOSFET). The resistor has a first temperature coefficient. The transistor operating in a linear region is controlled by a control voltage to turn on and to form a transistor resistor coupled with the resistor in series. The transistor resistor has a second temperature coefficient, wherein a temperature coefficient of the equivalent resistor is relevant to the first and second temperature coefficients. The current mirror receives the reference current and provides a mirrored current of the reference current as the output current. | 12-10-2009 |
20090273831 | LIGHT MODULE, OPTICAL TWEEZERS GENERATOR AND DARK FIELD MICROSCOPE - A light module is provided. The light module applied to a dark field microscope is used for illuminating an object. The light module includes a light beam, a reflection component and a condensing component. The light beam has several lights. The reflection component is used for converting the lights radiating along a beginning direction to a circular beam substantially radiating along the beginning direction. The circular beam passes through the condensing component and is focused on the object. A part of the circular beam passing through the condensing component is scattered by the object. | 11-05-2009 |
20090272180 | CONTINUOUS TESTING DEVICE AND CONTINUOUS TESTING SYSTEM - A continuous testing device for testing the concentration of a target object in a fluid is provided. The continuous testing device includes a first chip, a signal source and a second chip. The first chip includes a separating unit and a reacting unit. The separating unit separates the target object from a non-target object in the fluid. The reacting unit enables the fluid having separated out the non-target object to react with a reagent. The signal source provides a signal passing through the fluid having reacted with the reagent. The second chip disposed at one side of the first chip includes a signal transducing element and a processing unit. The signal transducing element receives the signal passing through the fluid and outputs an electronic signal corresponding to the input signal. The processing unit acquires the concentration of the target object according to the electronic signal. | 11-05-2009 |
20090251193 | LEVEL SHIFTER AND CIRCUIT USING THE SAME - A level shifter consisting of first to fifth transistors is provided. First ends of the first and second transistors are coupled to a first supply voltage. Control ends of third and fourth transistors respectively receive first and second input signals. First ends of the third and fourth transistors are respectively coupled to control ends of the second and first transistors, and are respectively coupled to second ends of the first and second transistors. Second ends of the third and fourth transistors are coupled to a second supply voltage. The first ends of the third and fourth transistors respectively output first and second output signals. A first end and a control end of the fifth transistor are coupled to the control ends of one and the other of the first and second transistors. A second end of the fifth transistor is coupled to the second supply voltage. | 10-08-2009 |
20090246477 | ASSEMBLY STRUCTURE - An assembly structure is provided. The assembly structure includes a first substrate, a second substrate and a medium layer disposed between the first and second substrates. The medium layer includes a side edge, and the second substrate includes at least one lead wire. When the second substrate is disposed on the medium layer, the lead wire of the second substrate is relatively oblique to the side edge of the medium layer. | 10-01-2009 |
20090243631 | Circuit for capacitance measurement and method therefor - A measurement method for capacitance includes the following steps. First, a voltage on at least one end of a to-be-measured capacitor is switched in response to a first set of clock signals such that a level of an integrated voltage is adjusted from a start voltage level to an end voltage level in a first integration period, wherein a capacitance of the to-be-measured capacitor is relevant to a difference between the end voltage level and the start voltage level. Next, the level of the integrated voltage is adjusted from the end voltage level to the start voltage level in a second integration period in response to a second set of clock signals. Then, the capacitance of the to-be-measured capacitor is obtained according to the first and second integration periods and a known characteristic parameter. | 10-01-2009 |
20090237048 | Power management circuit and method of frequency compensation thereof - A power management circuit includes a regulator circuit, a first frequency compensation circuit, a first switch circuit and a detection circuit. The regulator circuit includes a signal output end. The first switch circuit is turned on in response to an enabled first control signal such that the first frequency compensation circuit is coupled to the regulator circuit. The detection circuit determines whether an output capacitor is coupled to the signal output end, and generates the enabled first control signal to turn on the first switch circuit and connect the first frequency compensation circuit to the regulator circuit when the output capacitor is not coupled to the signal output end. Therefore, the regulator circuit is frequency compensated by the first frequency compensation circuit. | 09-24-2009 |
20090167328 | FLUID MEASURING APPARATUS - The invention provides a fluid measuring apparatus, which includes a collector, a sensing circuit, and an electrochromic device electrically connected to the sensing circuit. When the concentration of a fluid flowing through the collector and between the sensing circuit varies, the color of the electrochromic device changes accordingly. Further, the electrochromic device includes an electrochromic material, and the sensing circuit includes a first electrode and a second electrode, wherein the first and the second electrodes are disposed in the collector and the electrochromic material is disposed on the first electrode. When the concentration of an electrolytic solution flowing between the first electrode and the second electrode varies, the color of the electrochromic material changes accordingly. | 07-02-2009 |
20090052038 | Apparatus and method for changing optical tweezers - An apparatus and a method for changing optical tweezers are provided. The apparatus includes a diffractive optical element (DOE), a mask unit and an objective lens. The DOE includes a plurality of phase delay patterns. The mask unit includes a plurality of mask patterns that correspond to the phase delay patterns, respectively, wherein at least a portion of the mask patterns are complementary. A laser beam passing through each phase diffractive pattern correspondingly passes through each mask pattern to generate a compound diffractive pattern. The objective lens receives the compound diffractive pattern and focuses it on an examining object to form an optical tweezers. | 02-26-2009 |
20090051999 | Optical tweezers controlling device - An optical tweezers controlling device including a light source, an objective lens and a focus adjusting unit is provided. The focus adjusting unit disposed between the light source and the objective lens includes a mirror set and a zoom lens set. The mirror set has at least a mirror. The mirror is rotatable such that after a light of the light source is projected to the mirror, the reflective direction of the light reflected from the mirror is changeable. The zoom lens set has at least a zoom lens disposed in accordance with the mirror. By rotating the mirror or changing the focal length of the zoom lens, the focusing location of the light changes on the focal plane of the objective lens or in the front or the rear of the focal plane. | 02-26-2009 |
20090032692 | Apparatus of generating an optical tweezers with momentum and method thereof and photo-image for guiding particles - An apparatus of generating an optical tweezers with momentum and method thereof and an optical tweezers photo-image for guiding particles are provided. The apparatus generates at least one optical tweezers on an examined object that carries at least one particle. The apparatus includes a laser source, a diffractive optical element and a convergent lens. The laser beam from the laser source passes through the diffractive optical element to produce a diffractive pattern. The laser beam is then received by the convergent lens and then to be focused on a plane of the examined object. The optic axis of the convergent lens is substantially not perpendicular to the plane of the examined object, so that the laser beam is projected onto the plane of the examined object in a skewed manner for providing a lateral momentum to move the particle. | 02-05-2009 |
20080266220 | Scan driver - A scan driver for a liquid crystal display (LCD) includes first and second address logic units, first and second level shifters and a decoder. The first address logic unit enables an i | 10-30-2008 |
20080260090 | Shift register and shift registering apparatus - A shift register is provided for use in a data driver. The shift register includes a shift registering unit. The shift registering unit selectively receives a clock signal. The shift registering unit includes a flip-flop; and a first selection circuit. The first selection circuit selectively sends the clock signal to the flip-flop according to a first selection signal, wherein before the flip-flop receives a data signal that is enabled, the first selection circuit sends the clock signal to the flip-flop according to the first selection signal so that the flip-flop correctly outputs the enabled data signal according to the clock signal. | 10-23-2008 |
20080253500 | Flip-flop and shift register - A flip-flop is provided. The flip-flop is used in a shift register in a source driver. The flip-flop is used to receive a first clock signal, an input signal and output an output signal. The output signal is fed back to the flip-flop. The flip-flop includes a flop core for receiving the input signal and output the output signal. When the input signal and the output signal are all disabled, the flop core is disabled to function. When the input signal or the output signal is enabled, the flop core is enabled to function to output the output signal. | 10-16-2008 |
20080253482 | Receiving circuit and method thereof - A receiving circuit is provided for receiving a data signal and a clock signal, which are RSDS signals, and outputting an output data signal to a data driver. The receiving circuit includes a data comparator, a data intermediate circuit, a clock comparator, a clock intermediate, and a flip-flop. The data comparator, driven with a data bias current, receives the data signal, and outputs a compared data signal. The clock comparator, driven with a clock bias current, receives the clock signal, and outputs a compared clock signal. The flip-flop receives the compared data signal via the data intermediate circuit and the compared clock signal via the clock intermediate circuit. The phase difference between the compared data signal and the compared clock signal is improved by adjusting the data and the clock bias currents. | 10-16-2008 |
20080252667 | Digital-to-analog converter and method thereof - A digital-to-analog (D/A) converter comprises a decoder apparatus and an operational amplifier. The decoder apparatus comprises first and second decoder unit. The first decoder unit selects a voltage of first voltage set as first and second voltage in response to a value of first gray level set. The second decoder unit selects first border voltage of second voltage set as the first and the second voltages and second border voltage of that as the first and the second voltages in response to the maximum and the minimum value of second gray level set respectively. The second decoder unit further selects the first and the second boarder voltage as the first and the second voltage respectively in response to an intermediate value of the second gray level set. The operational amplifier generates a pixel voltage having level between the first and the second voltage accordingly. | 10-16-2008 |
20080252627 | DISPLAY ARRAY DRIVING CIRCUIT AND DRIVING METHOD THEREOF - A display array driving circuit is provided. The circuit includes a first memory block, a second memory block, and a main circuit. The first memory block stores the most significant bit (MSB) of the data of one pixel. The second memory block is utilized to store non-MSB bits of the data of the pixel. The main circuit retrieves the MSB of the data of the pixel from the first memory block when the display array is in a predetermined mode, for displaying the pixel data on the display array. In the predetermined mode, the main circuit does not retrieve the non-MSB bits of the data of the pixel, and power consumption is subsequently reduced. | 10-16-2008 |
20080252375 | Voltage-clamping device and operational amplifier and design method thereof - A voltage-clamping device used in an operational amplifier is provided. The operational amplifier comprises a first transistor. The cross-voltage between the gate and the source of the first transistor is near to a specific voltage and the cross-voltage between the drain and the source of the first transistor is not equal to zero, so as to generate a big substrate current. The voltage-clamping device comprises a second transistor whose source and gate are respectively coupled to the drain of the first transistor and used for receiving a bias signal, so that the second transistor is biased in saturation region, and the voltage at the source of the second transistor is made equal to the difference between the bias signal and the threshold voltage of the second transistor. Thus, the cross-voltage between the drain and the source of the first transistor is reduced and the substrate current is reduced accordingly. | 10-16-2008 |