Patent application number | Description | Published |
20080278139 | SLEEP CURRENT ADJUSTING CIRCUIT OF SYSTEM ON CHIP - There is provided a sleep current adjusting circuit of a system on chip including: a regulator supplying a turn-on voltage and a normal current when a mode selection signal is a normal mode signal, and a turn-off voltage when the mode selection signal is a sleep mode signal; a switching device turned on by the turn-on voltage of the regulator to supply the normal current from the regulator to a main circuit part and a sleep operation circuit part, respectively, and turned off by the turn-off voltage of the regulator to block the normal current from being supplied to the main circuit part and supply the sleep current to the sleep operation circuit part; and a current limit device limiting an operating current flowing in response to the operating voltage and supplying the sleep current to the sleep operation circuit part. | 11-13-2008 |
20090131004 | RECEIVER WITH SIGMA-DELTA STRUCTURE - There is provided a receiver with a sigma-delta structure, the receiver including: a low noise amplifier amplifying a received signal according to a detection signal; a mixer converting an RF signal of the low noise amplifier into an IF signal; a sigma-delta A/D converter converting the IF signal from the mixer | 05-21-2009 |
20090170461 | ANTENNA DIVERSITY RECEIVER - An antenna diversity receiver includes a plurality of antennas, an antenna selector unit, an RF module unit, a logic gate unit, a power detector unit, and a selection controller unit. The antenna selector unit selects one of the antennas. The RF module unit converts an RF RX signal received from the antenna selector unit into a baseband RX signal. The logic gate unit controls a power detection mode for detecting the power levels of RX signals and an operation mode for selecting one of the antennas. The power detector unit detects the power level of the RX signal. The selection controller unit controls the antenna selector unit to sequentially select the antennas in the power detection mode, and controls the antenna selector unit to select the antenna with a relatively good RX sensitivity among the antennas. | 07-02-2009 |
20090295340 | REGULATOR WITH SOFT-START USING CURRENT SOURCE - There is provided a regulator with soft-start using a current source. The regulator with soft-start may include: a power switch unit including first and second power switches connected between a power supply terminal and an output terminal; a load capacitor connected between the output terminal and a ground; a voltage detection unit detecting a voltage of the output terminal; a comparison unit comparing a detection voltage and a predetermined reference voltage, and outputting first and second switching signals; a current generating a predetermined constant current; a current control unit switching a connection between a control terminal of the first power switch and the current source unit according to the first switching, and switching a connection between the control terminal of the first power switch and the ground according to the second switching signal; and an error amplification unit amplifying an error voltage between the detection. | 12-03-2009 |
20100052952 | KEY SCANNING CIRCUIT - In a key scanning circuit, a key input unit has a parallel connection of a plurality of circuits having a series connection of resistors and switches between a power supply input terminal and a key scanning terminal. The resistors connected in parallel have different resistances. A current mirror has a first terminal connected to the key scanning terminal. A reference current source is connected between a second terminal of the current mirror and the power supply input terminal. | 03-04-2010 |
20100150041 | WIRELESS COMMUNICATION APPARATUS HAVING SELF SENSING FUNCTION - Disclosed is a wireless communication apparatus having a self sensing function, which can detect an object by use of a wake-up function without employing a separate sensor. The wireless communication apparatus includes a communication unit wirelessly communicating with a server forming a wireless network, and a wake-up unit waking up the communication unit under the control of the server when the communication unit is in sleep mode, and sensing the presence of an object within a preset communication range according to a reflection signal, which is a signal reflected by the object after being transmitted from the communication unit. | 06-17-2010 |
20120169305 | MULTI-VOLTAGE REGULATOR - Disclosed herein is a multi-voltage regulator. The multi-voltage regulator includes an error amplifier amplifying a difference voltage between a predetermined reference voltage and a received feedback voltage; a first voltage adjusting part connected to an output terminal of the error amplifier, the first voltage adjusting part regulating a level of a voltage at a power input terminal to output the regulated voltage to a first output terminal; a second voltage adjusting part connected to the output terminal of the error amplifier, the second voltage adjusting part regulating the level of the voltage at the power input terminal to output the regulated voltage to a second output terminal; and a voltage detector detecting a voltage according to a voltage at the first output terminal and a voltage at the second output terminal to supply the detected voltage as the feedback voltage. | 07-05-2012 |
20120235801 | Wireless apparatus having wake-up function - A wireless apparatus having a non-electric power-type wake-up function that operates a wake-up circuit waking-up a microprocessor for communications without power. There is provided a wireless apparatus having a wake-up function, including: a wake-up unit that has a rectifying circuit having elements configured as passive elements and rectifies preset first wireless signals to transmit wake-up signals; and a wireless communications unit that is woken-up by the wake-up signals from the wake-up unit to perform communications using preset second wireless signals, in a sleep mode. | 09-20-2012 |
20130063390 | TOUCH INPUT SENSING DEVICE AND TOUCH INPUT SENSING METHOD - There are a touch input sensing device and a touch input sensing method. The touch input sensing device includes: a plurality of sensing electrodes; and a controller obtaining sensing signals generated from the plurality of sensing electrodes through a plurality of sensing channels electrically connected to the plurality of sensing electrodes, wherein the controller calculates a difference value between the sensing signals obtained from the plurality of sensing channels connected to the mutually adjacent sensing electrodes among the plurality of sensing electrodes to determine a touch input. A weighting value is assigned to a difference value between sensing signals obtained from mutually adjacent sensing electrodes, based on which the coordinates, or the like, of a touch input are determined, thus significantly reducing the influence of noise and accurately determining a touch input. | 03-14-2013 |
20130100068 | TOUCH INPUT SENSING DEVICE AND METHOD THEREOF - There are provided a touch input sensing device and a method thereof. The touch input sensing device includes a panel integrally provided with a display device and including a plurality of sensing electrodes; a sensing circuit unit generating an analog signal from capacitance variations generated in the plurality of sensing electrodes; a signal converting unit generating a digital signal from the analog signal; and a calculating unit judging a touch input from the digital signal, wherein the signal converting unit generates the digital signal by measuring a time required for the analog signal to reach a predetermined reference signal level and controls a time at which the sensing circuit unit generates the analog signal by judging whether the measured time is included in an activation time period of a clock signal of the display device. | 04-25-2013 |
20130100069 | TOUCH SENSING DEVICE AND METHOD THEREOF - There are provided a touch sensing device and a method thereof. The touch sensing device, including: a plurality of sensing circuit units measuring capacitance variations from a plurality of sensing electrodes; at least one TDC circuit connected with the plurality of sensing circuit units to convert the capacitance variations into digital signals; a calculating unit judging a touch from the digital signals; and a delay circuit sequentially receiving the capacitance variations from the plurality of sensing circuit units. | 04-25-2013 |
20130106768 | TOUCH SENSING APPARATUS AND METHOD THEREOF | 05-02-2013 |
20130113721 | TOUCH SENSING APPARATUS AND METHOD THEREOF - There are provided a touch sensing method and a touch sensing apparatus that can minimize the influence of noise due to a driving signal of a display apparatus. The touch sensing method includes generating an analog signal by sensing variations in capacitance generated from a plurality of electrodes; measuring a first time required for a level of the analog signal to reach a first reference value; determining whether the first time is included in a noise generation period of a driving signal of a display apparatus; and measuring a second time required for a level of the analog signal to reach a second reference value when the first time is included in the noise generation period. | 05-09-2013 |
20130113722 | TOUCH SENSING APPARATUS AND OPERATING METHOD THEREOF - There are provided a touch sensing apparatus and an operating method thereof. The touch sensing apparatus includes: a panel unit including a plurality of first electrodes and a plurality of second electrodes, the first and second electrodes intersecting each other; a circuit unit applying first driving signals to the first electrodes and detecting sensed signals from the second electrodes; and a control unit controlling an operation of the circuit unit, wherein the control unit controls the circuit unit to simultaneously apply the first driving signals to the first electrodes during a first duration corresponding to a sleep mode and detect first sensed signals from the second electrodes, and determines whether a valid touch has occurred during the first duration to determine whether to cancel the sleep mode. | 05-09-2013 |
20130127773 | TOUCH SENSING APPARATUS AND METHOD THEREOF - There are provided a touch sensing apparatus and a touch sensing method. The touch sensing apparatus includes a driving circuit unit applying a driving signal to at least one of a plurality of first electrodes; a sensing circuit unit generating an analog signal by detecting variations in capacitance in second electrodes intersecting the at least one of first electrodes to which the driving signal is applied; and a signal converting unit converting the analog signal into a digital signal, wherein the driving circuit unit controls a frequency of the driving signal according to electric noise and determines a level of the driving signal according to a dynamic range of the signal converting unit. | 05-23-2013 |
20130127774 | TOUCH SENSING APPARATUS AND METHOD THEREOF - There are provided a touch sensing apparatus and a touch sensing method. The touch sensing apparatus includes: a panel unit provided with a plurality of electrodes; a sensing circuit unit detecting variations in capacitance in the plurality of electrodes; and a calculating unit determining a touch from the variations in capacitance, wherein the calculating unit applies different parameters for determining the touch to the plurality of individual electrodes. The parameters such as an integration time, a digital signal conversion time, and a driving signal application time are set differently according to positions in which the variations in capacitance are detected, driving efficiency may be improved and power consumption may be significantly reduced. | 05-23-2013 |
20130135247 | TOUCH SENSING APPARATUS - There is provided a touch sensing apparatus including a panel unit in which a plurality of electrodes intersecting with each other are disposed; and a control unit sensing changes in capacitance generated in regions in which respective electrodes, among the plurality of intersecting electrodes, intersect, wherein the panel unit includes a first region in which the plurality of electrodes are disposed with a first interval therebetween, and a second region in which the plurality of electrodes are disposed with a second interval therebetween, and the control unit senses a fingerprint touching the second region based on a change in capacitance generated therein. | 05-30-2013 |
20130155003 | TOUCH SENSING APPARATUS AND METHOD THEREOF - There are provided a touch sensing apparatus and a touch sensing method. The touch sensing apparatus includes: a plurality of first electrodes extending along a first axis; a plurality of second electrodes extending along a second axis intersecting the first axis and forming a plurality of intersection points by intersecting the plurality of first electrodes; and a controller integrated circuit determining a touch by detecting changes in capacitance generated in the plurality of intersection points, wherein the controller integrated circuit sets parameters for detecting the changes in capacitance differently according to positions of the plurality of intersection points. | 06-20-2013 |
20130257789 | TOUCH SENSING APPARATUS AND METHOD THEREOF - There are provided a touch sensing apparatus and method. The touch sensing apparatus includes a sensing circuit unit detecting a plurality of signals from a plurality of changes in capacitance generated in a plurality of electrodes provided in a panel unit; and a signal processing unit comparing, with predetermined reference levels, levels of at least two signals generated from changes in capacitance in at least two electrodes spaced apart from one another by a predetermined distance or greater, from among the plurality of electrodes, wherein, when the levels of the at least two signals are greater than the predetermined reference levels, the plurality of changes in capacitance are determined to be generated due to noise. | 10-03-2013 |
20130285975 | TOUCH SCREEN PANEL AND TOUCH SCREEN APPARATUS - There are provided a touch screen panel and a touch screen apparatus. The touch screen panel includes a plurality of first electrodes formed on a substrate and extending in a first axis direction; and a plurality of second electrodes formed on the substrate and extending in a second axis direction perpendicular to the first axis direction, wherein a plurality of first slits are provided in a diagonal direction with respect to the first axis direction and the second axis direction between the plurality of first electrodes and the plurality of second electrodes, and at least one second slit is formed within each of the plurality of second electrodes. | 10-31-2013 |
20130321325 | APPARATUS AND METHOD FOR SENSING CAPACITANCE, AND TOUCH SCREEN APPARATUS - There are provided an apparatus for sensing capacitance, a method for sensing capacitance, and a touch screen apparatus. The apparatus for sensing capacitance includes; a first integration circuit unit including a first capacitor charged by a change in capacitance occurring in a sensing electrode; a comparison circuit unit comparing a level of an output signal of the first integration circuit unit with a predetermined reference level; and a noise removal unit including a plurality of switches operating according to an output of the comparison circuit unit, wherein the comparison circuit unit controls an operation of each of the plurality of switches to discharge charges charged in the first capacitor when the level of the output signal of the first integration circuit unit is higher than the reference level. | 12-05-2013 |
20130321326 | APPARATUS AND METHOD FOR SENSING CAPACITANCE, AND TOUCH SCREEN APPARATUS - There are provided an apparatus for sensing capacitance, a method for sensing capacitance, and a touch screen apparatus. The apparatus for sensing capacitance includes; a driving circuit unit applying driving signals to a first capacitor; an integration circuit unit including a second capacitor and a third capacitor respectively charged by a change in capacitance generated in the first capacitor based on the driving signals to generate a predetermined output voltage and calculating a voltage difference between the output voltage of the second capacitor and the output voltage of the third capacitor; and a control unit determining characteristics of a noise signal based on the voltage difference and controlling the driving signals based on the characteristics of the noise signal. | 12-05-2013 |
20140009216 | CAPACITANCE SENSING APPARATUS AND METHOD, AND TOUCH SCREEN APPARATUS - There is provided a capacitance sensing apparatus including: a driving circuit unit applying a driving signal to a first capacitor; a first integrating circuit unit including a second capacitor charged by a change in capacitance generated in the first capacitor based on the driving signal to generate a first output voltage; and a second integrating circuit unit including a third capacitor charged by a change in capacitance generated in the second capacitor to generate a second output voltage, wherein a level of the second output voltage is changed at least twice during a single period of the driving signal applied to the first capacitor. | 01-09-2014 |
20140009431 | CAPACITANCE SENSING APPARATUS AND METHOD, AND TOUCH SCREEN APPARATUS - There is provided a capacitance sensing apparatus including: a driving circuit unit sequentially applying a driving signal to each of a plurality of first electrodes; a sensing circuit unit including a first integrating circuit detecting a first change in capacitance generated in a plurality of second electrodes by the driving signal and a second integrating circuit connected to another first electrode adjacent to the first electrode to which the driving signal is applied; and an operating unit connected to the sensing circuit unit to determine a touch input, wherein the second integrating circuit detects a second change in capacitance generated due to noise in the another first electrode, and the operating unit determines the touch input based on the first and second changes in capacitance. | 01-09-2014 |
20140009432 | CAPACITANCE SENSING APPARATUS AND METHOD, AND TOUCHSCREEN APPARATUS - There is provided a capacitance sensing apparatus including: a driving circuit unit applying a driving signal having a common level potential and first and second level potentials different from the common level potential to a first capacitor; a sensing circuit unit detecting a change in capacitance generated in the first capacitor; and a gain controlling circuit unit controlling a gain of the sensing circuit unit, wherein the sensing circuit unit includes a second capacitor charged by the change in capacitance of the first capacitor when a level of the driving signal is changed from the first level potential to the common level potential or changed from the common level potential to the second level potential. | 01-09-2014 |
20140049234 | REGULATOR FOR CONTROLLING OUTPUT VOLTAGE - There is provided a regulator for controlling an output voltage, capable of stabilizing the voltage output from the regulator. The regulator for controlling an output voltage may include an output current generating unit generating an output current according to a reference voltage, an output voltage detecting unit detecting an output voltage using the output current, according to resistors provided therein, and a controlling unit comparing the output voltage with a preset reference output voltage to control the reference voltage. | 02-20-2014 |
20140104226 | APPARATUS AND METHOD OF CONTROLLING CAPACITANCE DETECTION, AND TOUCHSCREEN APPARATUS - There are provided an apparatus and a method of controlling capacitance detection, and a touchscreen apparatus. The apparatus includes: a driving circuit unit providing driving signals including a preset number of driving pulses to a plurality of respective driving electrodes of a panel unit; a detecting circuit unit removing electrical noise from a first voltage corresponding to a capacitance change in the panel unit when the electrical noise is included in the first voltage; and a controlling unit controlling the driving circuit unit to generate an additional driving pulse when the electrical noise is included in the first voltage. | 04-17-2014 |
20140125636 | ELECTRONIC PEN DATA INPUT SYSTEM AND ELECTRONIC PEN DATA INPUT METHOD USING THE SAME - There are provided an electronic pen data input system and an electronic pen data input method using the same. The electronic pen data input system includes: an electronic pen including an accelerometer sensor to provide acceleration information corresponding to movement thereof; and a portable communications terminal calculating movement information of the electronic pen using the acceleration information of the electronic pen and compensating for a noise input in the movement information to determine a handwriting data input. | 05-08-2014 |
20140146004 | INPUT DEVICE - There is provided an input device including a display panel having a first region for displaying an image, a touch panel attached to the display panel and detecting a touch input, and a digitizer module attached to the display panel and detecting an electromagnetic type digitizer input, wherein the digitizer module includes a plurality of circuit units formed in a second region corresponding to an edge of the first region, and at least a portion of the plurality of circuit units operates as a circuit unit for wireless communications. | 05-29-2014 |
20140176290 | MAGNETIC SHEET, METHOD FOR MANUFACTURING THE SAME, AND CONTACTLESS POWER TRANSMISSION DEVICE INCLUDING THE SAME - There is provided a method for manufacturing a magnetic sheet, including: preparing an insulation layer; preparing a laminate by forming a metal layer on the insulation layer; and laminating and compressing at least two laminates. | 06-26-2014 |
20140253491 | TOUCH SENSING DEVICE AND TOUCHSCREEN DEVICE - There are provided a touch sensing device and a touchscreen device, the touch sensing device including a plurality of driving electrodes extended in a first axial direction, a plurality of sensing electrodes extended in a second axial direction intersecting with the first axial direction, an integrating circuit unit generating a first analog signal by integrating a change in capacitance generated in a first sensing electrode among the plurality of sensing electrodes and generating a second analog signal from a change in capacitance generated in a second sensing electrode adjacent to the first sensing electrode, and a subtracting unit calculating a difference in levels between the first and second analog signals. | 09-11-2014 |
20140267144 | TOUCH SENSING DEVICE AND TOUCHSCREEN DEVICE - There are provided a touch sensing device and a touchscreen device. The touch sensing device according to an embodiment of the invention may include: a buffer unit including a buffer capacitor charged and discharged by a first voltage and a second voltage input at a predetermined period; an integrating circuit unit integrating a charging voltage of the buffer capacitor; a signal conversion unit comparing a voltage output from the integrating circuit unit with a predetermined reference voltage to generate the second voltage; and a touch determination unit counting the second voltage with a predetermined reference clock to determine a touch. | 09-18-2014 |
20140292708 | TOUCHSCREEN APPARATUS - There is provided a touchscreen apparatus, including a panel unit including a plurality of driving electrodes extended in a first axial direction and a plurality of sensing electrodes extended in a second axial direction intersecting with the first axial direction, a driving circuit unit applying predetermined inspection signals to a plurality of driving channels electrically connected to the plurality of driving electrodes, and an inspecting unit determining an occurrence of a short between at least one pair of adjacent driving electrodes among the plurality of driving electrodes by performing a logical operation on voltages of the plurality of driving channels. | 10-02-2014 |
20150028685 | COIL SHEET INCLUDING CORE AND CONTACTLESS POWER TRANSMISSION DEVICE INCLUDING THE SAME - There is provided a coil sheet including: a sheet having a spiral coil thereon; a core located at the central portion of the coil and having a thickness of t mm, wherein the core has a curvature in at least one of an upper surface of the core, a corner at which the upper surface and a side surface meet each other, and a position in which the core and the sheet meet each other. | 01-29-2015 |
Patent application number | Description | Published |
20110280334 | DIGITAL AMPLITUDE MODULATOR AND POLAR TRANSMITTER USING THEREOF - The present invention provides a digital amplitude modulator and polar transmitter using the same. The polar transmitter includes: a polar converter for converting an input signal into an amplitude information signal and a phase information signal, and outputting the converted amplitude and phase information signal; a sigma-delta modulator for receiving a fractional part of the amplitude information signal, and generating a correcting value for an integer part of the amplitude information signal; a phase-modulator for upward-modulating the phase information signal outputted from the polar converter, and outputting carrier waves including the upward-modulated phase information signal; and a digital power amplifier for generating an output signal whose amplitude corresponds to the integer part of the amplitude information signal which is subjected to correction by the correcting value, and outputting combining the output signal with an output value of the phase-modulator to output the combined signal. | 11-17-2011 |
20110309885 | DELAY CIRCUIT FOR LOW POWER RING OSCILLATOR - Disclosed herein is a delay circuit for a low power ring oscillator. The delay circuit includes: a pair of N type transistors that receive first differential input signals Vin | 12-22-2011 |
20120111029 | AC POWERED THERMOELECTRIC DEVICE - Disclosed herein is an AC powered thermoelectric device, including: a power supplier outputting AC power; a plurality of thermoelectric modules; and a plurality of rectifiers connected to each of the plurality of thermoelectric modules in series and applying the AC power having different polarities to each of the plurality of thermoelectric modules, whereby the positions of the hot side and the cold side are fixed to function as a heater and a cooler, while using the AC power. | 05-10-2012 |
20120268197 | PAD CONTROLLING APPARATUS - Disclosed herein is a pad controlling apparatus controlling current and voltage applied to a pad, the pad controlling apparatus including: a voltage drop unit dropping the voltage applied to the pad; a switching unit connected in parallel with the voltage drop unit; and a control unit comparing a level of the dropped voltage and first reference voltage with each other and turning on the switching unit on when the level of the dropped voltage is larger than the first reference voltage. According to the present invention, even though interrupt occurs from the outside, a chip may be normally operated. | 10-25-2012 |
20130181947 | TOUCH SCREEN PANEL - Disclosed herein is a touch screen panel. The touch screen panel includes: a driving unit generating a driving signal; a signal sensing unit that is activated by the driving signal input from the driving unit; and a signal detection unit that generates a combination signal by using a sensing signal generated by capacitance sensed by the signal sensing unit, and counts a period of the sensing signal by using the combination signal to calculate a counting value and calculates a delay time of a remaining period after the counting, and combines the calculated values to determine a cell in which the capacitance is generated. | 07-18-2013 |
20130325391 | CIRCUIT AND METHOD FOR SENSING TEMPERATURE - The present invention relates to a circuit and a method for sensing a temperature. In accordance with an embodiment of the present invention, a circuit for sensing a temperature including: a bipolar transistor unit connected to a current source to output an output voltage which is inversely proportional to temperature; a variable reference voltage unit for providing a variable reference voltage which varies according to setting; a first amplifying unit for receiving the output voltage of the bipolar transistor unit and the variable reference voltage and performing differential amplification to output the amplified voltage; and a second amplifying unit for variably amplifying a variation of the output voltage of the first amplifying unit using a feedback variable resistor is provided. Further, a method for sensing a temperature using the same is provided. | 12-05-2013 |
20140036974 | ADAPTIVE FILTER AND METHOD OF ADAPTIVE FILTERING - The present invention relates to an adaptive filter, which includes an analog filter; an analog-digital converter; a modem; a control unit connected to the modem to detect an adjacent interference signal adjacent to an interested channel signal; and a filter control signal generating unit connected to the control unit to generate a filter control signal for controlling a capacity of a variable capacitor, and a method of adaptive filtering and can control a filter passband adaptively to the adjacent interference signal. | 02-06-2014 |
20150048985 | ANTENNA MODULE FOR NEAR FIELD COMMUNICATION - Embodiments of the invention provide an antenna module for NFC. According to at least one embodiment, the antenna module includes an antenna sheet patterned with a loop coil of a conductive metal material, a magnetic shielding sheet comprising a metal sheet, which is embedded in a magnetic sheet, and an adhesive film interposed between the antenna sheet and the magnetic shielding sheet. | 02-19-2015 |