SILICON INTEGRATED SYSTEMS CORP. Patent applications |
Patent application number | Title | Published |
20150300890 | ON-CHIP TEMPERATURE SENSING DEVICE - An on-chip temperature sensing device is disclosed. The disclosed on-chip temperature sensing device is capable of sensing an environmental temperature of the chip. The device comprises a reference generating circuit, a first oscillator, a second oscillator, and an arithmetic logic unit. The reference generating circuit is configured to generate a first control voltage to control the first oscillator and the second oscillator. The bias current of the first oscillator and the bias current of the second oscillator are both controlled by the first control voltage so that the bias current of the first oscillator is directly proportional the bias current of the second oscillator regardless the environmental temperature. The first oscillator generates a first oscillation signal, while the second oscillator generates a second oscillation signal. The arithmetic logic unit may calculate the environmental temperature according to the first oscillation signal and the second oscillation signal. | 10-22-2015 |
20150261342 | CAPACITIVE TOUCH DEVICE AND SENSING METHOD THEREOF - A capacitive touch device and a sensing method thereof are disclosed. The capacitive touch device includes a touch panel, at least one touch detection unit and a processing unit. The touch detection unit scans the touch panel, obtains an N-bit sensed data and compresses the N-bit sensed data to an L-bit sensed data. The processing unit receives the L-bit sensed data, decompresses the L-bit sensed data to the N-bit sensed data and calculates a coordinate of a touch according to the N-bit sensed data. The present invention is capable of decreasing the time for transmitting the sensed data, the power consumption and the requirements for the memory capacity of the touch detection unit and the memory capacity of the processing unit. | 09-17-2015 |
20150116257 | CAPACITIVE TOUCH DEVICE AND SENSING METHOD THEREOF - A capacitive touch device and a sensing method thereof are disclosed. The capacitive touch device includes a touch panel and a plurality of touch detection units. The touch panel includes first sensing lines and second sensing lines. The position of a touch between a last one of the first sensing lines and a first one of the second sensing lines can be calculated by the first touch detection unit, the second touch detection unit, or both. The present invention is capable of avoiding the problem that the frame rate is reduced significantly because of the data transmission between the first and second touch detection units. | 04-30-2015 |
20150116256 | CAPACITIVE TOUCH DEVICE AND SENSING METHOD THEREOF - A capacitive touch device and a sensing method thereof are disclosed. The capacitive touch device includes a touch panel and a plurality of touch detection units. The touch panel includes first sensing lines and second sensing lines. The position of a touch between a last one of the first sensing lines and a first one of the second sensing lines is calculated according to sensed values respectively corresponding to a first sensing line prior to the last one of the first sensing lines, the last one of the first sensing lines and the first one of the second sensing lines. The present invention is capable of avoiding the problem that the frame rate is reduced significantly because of the data transmission between the first and second touch detection units. | 04-30-2015 |
20150070293 | Touch Input Device and System Thereof - A touch input device provided in the present invention includes a pen tip, a pressure sensing module, a control unit and a PWM generator. The pen tip is utilized to touch a capacitive touchscreen and conduct a touchscreen driving signal. The pressure sensing module is utilized to generate a pressure sensing signal which corresponds to a pressure of the pen tip on the capacitive touchscreen. The control unit is utilized to receive the touchscreen driving signal and the pressure sensing signal, and then to generate a PWM control signal according to the pressure sensing signal. Further, a pulse width of the PWM control signal is proportional to the pressure. The PWM generator is utilized to provide a PWM signal to the pen tip according to the PWM control signal. A touch input system is further provided in the present invention. | 03-12-2015 |
20140253680 | IMAGE COMPENSATION DEVICE - An image compensation device is disclosed. The image compensation image compensation device comprises a 3D band pass filter, a 3D notch filter, a 3D notch mixing unit, a 3D summing unit, a non-3D notch filter, a non-3D band pass filter, a non-3D notch mixing unit, a non-3D band pass mixing unit, and a non-3D summing unit. The 3D notch mixing unit is used for compensating an output of the 3D notch filter. The non-3D notch mixing unit is used for compensating an output of the non-3D notch filter. The non-3D band pass mixing unit is used for compensating an output of the non-3D band pass filter. The image compensation device of the present invention is capable of avoiding the unstable and sparkle-like situation in the prior arts. | 09-11-2014 |
20140071062 | METHOD FOR INCREASING TOUCH SAMPLING RATE AND TOUCH DISPLAY DEVICE USING THE SAME - A method for increasing touch sampling rate and a touch display device using the same are provided, wherein the touch display device comprises a timing controller and a display panel. A timing control signal is provided by the timing controller. Each cycle of the timing control signal comprises a blanking period and a frame period, every N frame periods correspond to one image frame of a video signal, and every N blanking periods and every N frame periods correspond to one cycle of the video signal, where N is a positive integer larger than 1. Through the timing control signal, the touch display device arranges the timing for driving the display panel to display frame images and to sense touch, whereby increasing the touch sampling rate thereof. | 03-13-2014 |
20130335634 | NOISE REDUCTION DEVICE AND NOISE REDUCTION METHOD - A noise reduction device and a noise reduction method are disclosed. The noise reduction device includes a DC removal unit for removing a DC component of a luminance; a first wavelet transform unit for performing a wavelet transform on an output of the DC removal unit for outputting a first low and high band signals; a first low and high band noise estimation units for estimating a first low and high band noise values; a first low and high band soft threshold processing units for forming a first low and high band noise reduction signals according to the first low and high band noise values; and a first inverse wavelet transform unit for performing an inverse wavelet transform on the first low and high band noise reduction signals. The present invention is capable of reducing or removing a noise in the luminance signal. | 12-19-2013 |
20130335633 | IMAGE SHARPNESS DEVICE AND METHOD FOR THE SAME - An image sharpness device and a method for the same are disclosed. The image sharpness device includes a DC removal unit, at least one filter, at least one noise estimation unit, at least one soft threshold processing unit, and a summing unit. The DC removal unit receives a luminance signal of a field of a frame and removes a DC component of the luminance signal. The filter passes a component of an output of the DC removal unit within a predetermined frequency band. The noise estimation unit estimates a noise value of the field. The soft threshold processing unit forms a sharpness signal according to the noise value. The summing unit sums the luminance signal and the sharpness signal to output a resultant luminance signal. The present invention is capable of avoiding the problem that a noise in the luminance signal is enhanced. | 12-19-2013 |
20130285753 | AUTOMATIC SELF-CALIBRATED OSCILLATION METHOD AND APPARATUS USING THE SAME - An automatic self-calibrated oscillation method and an apparatus using the same are provided. After a static time tuning (STT) table and a run time tuning (RTT) table have been established, the apparatus converts an output clock signal to generate a current RTT value at every predefined time and then compares the current RTT value with a reference RTT value generated in response to a STT value of the STT table, or with an interpolated result generated in response to the reference RTT value to generate a deviation value. Thus, through the deviation value, the output clock signal may be calibrated to address the target frequency without the assistance of external reference clock unit or locked loop unit after the STT table and the RTT table are established. | 10-31-2013 |
20130278543 | METHOD OF REDUCING COMPUTATION OF WATER TOLERANCE BY PROJECTING TOUCH DATA - A method of reducing computation of water tolerance by projecting touch data is disclosed, targeting the handheld devices. The method targets first at obtaining a difference array, followed by extracting minimum values of rows and columns of the difference array to obtain a row projection list and a column projection list respectively. By repeated implementing of mutual capacitance detection, ghost water blocks can be wiped out from the multiple water blocks. Once integrating with a local spatial boundary detection algorithm, the sensed signals of intended input located within a rectangular water block yet beyond a real water block are consequently detected. The computational algorithm of the water tolerance of this invention is successfully built into the touch panel controller due to its substantially reduced computation. | 10-24-2013 |
20130265271 | METHOD OF REDUCING COMPUTATION OF PALM REJECTION BY PROJECTING TOUCH DATA - A method of reducing computation of palm rejection by projecting touch data is disclosed, targeting the handheld devices. The method targets first at obtaining a difference array, followed by extracting maximum values of rows and columns of the difference array to obtain a row projection list and a column projection list respectively. By repeated implementing of mutual capacitance detection, ghost palm blocks can be wiped out from the multiple palm blocks. Once integrating with a local spatial boundary detection algorithm, the sensed signals of intended input located within a rectangular palm block yet beyond a real palm block are consequently detected. The computational algorithm of the palm rejection of this invention is successfully built into the touch panel controller due to its substantially reduced computation. | 10-10-2013 |
20130176262 | PROJECTED CAPACITIVE TOUCH PANEL - A projected capacitive touch panel has a plurality of bar shaped first electrodes arranged parallel to each other and a plurality of wiggly-shaped second electrodes separated from each other by a space and each including a plurality of sensing lines. The sensing lines of each second electrode are spaced from each other by an interval, electrically connected to each other and extend along an oriented direction perpendicular to the length direction of the first electrodes in a wiggly manner. The sensing lines that are separated from each other by a short interval improve touch sensing effect. | 07-11-2013 |
20130154997 | SENSING DEVICE, TOUCH SENSING SYSTEM, AND DISPLAY DEVICE - A sensing device placed in a touch sensing system of a display device includes a selector, a sensing module, and a detection module for determining touch signals generated by the touch sensing system. The selector selects two of the touch signals according to at least one selection control signal. The sensing module comprises a first differential amplifier for comparing the selected touch signals and producing a first differential signal according to first control signals. According to second control signals, the detection module receives the first differential signal, generates an averaged sensing value and a reference value, and compares the averaged sensing value with the reference value to produce a second differential signal. Thereby, the touch sensing system uses the second differential signal to generate the first control signals and the second control signals to control the operation of the touch sensing system. | 06-20-2013 |
20130135432 | DEVICE FOR OUTPUTTING CHROMINANCE SIGNAL AND METHOD THEREOF - A device for outputting a chrominance signal and a method thereof are disclosed. The device includes a motion detection unit, a frame edge detection unit, and an output unit. The motion detection unit judges a motion degree of a frame. The frame edge detection unit judges whether a non-3D luminance signal is extracted from an edge of the frame. The output unit outputs one of a 3D chrominance signal and a non-3D chrominance signal as a resultant chrominance signal according to the motion degree which is judged by the motion detection unit and the judgment result of the frame edge detection unit. The present invention is capable of appropriately selecting the 3D chrominance signal and the non-3D chrominance signal when the frame is in the motion condition. | 05-30-2013 |
20130135216 | TOUCH COORDINATE CALCULATION METHOD FOR TOUCH PANEL - A method for calculating a touch coordinate on a touch panel is provided, the touch panel having a plurality of points, said method comprising: determining a group of candidate points when a touch occurs on the touch panel, each candidate point having one sensing value; assigning weights to the sensing values of the respective candidate points to obtain weighted sensing values; and calculating a coordinate by utilizing the weighted sensing values and positions of the respective candidate points. By using said method, the calculation result of the touch coordinate will be more stable. | 05-30-2013 |
20130113998 | DEVICE FOR OUTPUTTING LUMINANCE SIGNAL - A device for outputting a luminance signal is disclosed. The device includes a chrominance judgment unit, a field observation unit, and an output unit. The chrominance judgment unit and the field observation unit are used to determine whether a 3D luminance signal is affected. The output unit outputs a resultant luminance signal according to the determination results of the chrominance judgment unit and the field observation unit. According to the present invention, the resultant luminance signal can be accurately obtained by judging characteristics of the 3D luminance signal and a 3D chrominance signal even if a 3D comb filter is wrongly used in a motion condition. | 05-09-2013 |
20130106711 | HIERARCHICAL SENSING METHOD | 05-02-2013 |
20130016051 | Touch Panel Device Having a Divided ITO layer for Reducing Loading - A touch panel device includes a touch panel and two or more controllers. The touch panel includes four regions. Each region includes a plurality of driving conductors extended along a first direction, and a plurality of sensing conductors extended along a second direction perpendicular to the first direction. Each controller is in charge of one of the region. Since the length of each driving conductor and each sensing conductors is one half of that of the conventional driving conductor and sensing conductor, each controller controls one fourth of the area of the touch panel, and is responsible for one fourth of the capacitance of the touch panel. The touch panel device can be well controlled by the controller without using a single controller with higher detecting sensibility and cost. | 01-17-2013 |
20130015906 | Touch Panel DeviceAANM Yeh; Ying-JyhAACI Kaohsiung CityAACO TWAAGP Yeh; Ying-Jyh Kaohsiung City TW - A touch panel device includes a touch panel and a controller. The touch panel includes a first region and a second region. The first region includes a plurality of first driving conductors extended along a first direction, and a plurality of first sensing conductors extended along a second direction perpendicular to the first direction. The second region includes a plurality of second driving conductors extended along the first direction, and a plurality of second sensing conductors extended along the second direction. The controller is used for outputting a plurality of driving signals in an ordered sequence of the second direction to drive the plurality of first driving conductors and the plurality of second driving conductors, and for receiving a plurality of sensing signals from the plurality of first sensing conductors and the plurality of second sensing conductors in an ordered sequence of the first direction. | 01-17-2013 |
20120326992 | Touch Panel for Providing a Shield Against Noise - A touch panel includes a first substrate, first conductive circuits, second conductive circuits, and a shield circuit. The first conductive circuits are disposed on a first surface of the first substrate. Each of the first conductive circuits includes first electrodes. The second conductive circuits are disposed on the second first substrate. Each of the second conductive circuits includes second electrodes. The shield circuit is disposed on the second surface of the first substrate. The shield circuit for blocking out noise includes a transparent conducting layer and a conductive ring disposed on the transparent conducting layer. The conductive ring is electrically connected to a voltage supply. | 12-27-2012 |
20120287054 | TOUCH POSITION DETECTING METHOD - A touch position detecting method for a touch screen is disclosed. In the method, a specific point is detected by comparing a sensed data thereof with a first threshold and by comparing a sum of sensed values of a group of points which include the specific point with a second threshold. Furthermore, the sensed value of the specific point is checked to see if it is the maximum among the group of points. By using such a method, accuracy of touch position detection can be improved. | 11-15-2012 |
20120261199 | HIERARCHICAL SENSING METHOD - A hierarchical sensing method for a touch panel is disclosed. The touch panel has a matrix of points for detecting a touch or touches. The method includes dividing the points into a plurality of blocks; sensing first data from the respective blocks; determining which one or ones of the blocks are touched blocks according to the first data; sensing second data from each point of the touched blocks; and determining which one or ones of the points are touched points according to the second data. By using the method of the present invention, fast sensing speed and high sensing accuracy can be both achieved. | 10-18-2012 |
20110279980 | HEAT DISSIPATION STRUCTURE FOR LIQUID CRYSTAL TELEVISION - A heat dissipation structure for a liquid crystal television is disclosed. The liquid crystal television includes a front plate and a rear plate. The front plate has a screen and a metal backboard. The heat dissipation structure includes a printed circuit board (PCB) mounted to the metal backboard; a television integrated circuit (IC) chip for controlling operations of the liquid crystal television being attached on the PCB; and one or more heat dissipating posts provided between the PCB and the metal backboard. The heat generated by the television IC chip is dispersed to the metal backboard via the heat dissipating post or posts. | 11-17-2011 |
20110248932 | GHOST CANCELLATION METHOD FOR MULTI-TOUCH SENSITIVE DEVICE - A ghost cancellation method for the multi-touch sensitive device is disclosed. The multi-touch sensitive device includes a sensing array having multiple lines of a first axis and multiple lines of a second axis intersecting with each other. All the lines of the sensing array are scanned to determine which ones of the lines are touched, so as to determine touch point candidates. For each touch point candidate, a driving signal is applied to the line of the first axis, and the line of the second axis is detected to check if the touch point candidate is actually touched. | 10-13-2011 |
20110141054 | MULTIPLE FINGERS TOUCH SENSING METHOD USING MATCHING ALGORITHM - A touch sensing method for detecting positions of touching is disclosed. In the present invention, a reference touch profile is provided. A variable ideal combination profile indicating multiple touches is obtained by synthesizing a plurality of reference touch profiles at different positions. The variable ideal combination profile is matched with a sensing signal. Actual touch positions can be identified from the sensing signal when the matching of the variable ideal combination profile with the sensing signal is optimal. | 06-16-2011 |
20110135001 | HIERARCHICAL MOTION ESTIMATION METHOD USING DYNAMIC SEARCH RANGE DETERMINATION - A hierarchical motion estimation method implemented in a plurality of levels is disclosed. The hierarchical motion estimation method is used for estimating motion vectors of a frame. The frame being partitioned into blocks at a first level, and each block of the first level is partitioned into a plurality of blocks at a second level. The method includes selecting reference blocks at the first level for a specific block at the second level and determining a search range for the specific block at the second level by referring to motion vectors, which are known, of the reference blocks at the first level. By using such a method, the motion vectors of a frame can be rapidly and accurately estimated. | 06-09-2011 |
20090268802 | DECISION FEEDBACK EQUALIZER HAVING ADJUSTING DEVICE AND METHOD THEREOF - A decision feedback equalizer having a adjusting device and method thereof are described. The decision feedback equalizer having an adjusting device includes a feed-forward filter, a decision device, a feedback filter, the adjusting device, and a summation device. The feed-forward filter generates a forwarding signal (S | 10-29-2009 |
20090064067 | METHOD OF BALANCING PATH DELAY OF CLOCK TREE IN INTEGRATED CIRCUIT (IC) LAYOUT - A method of balancing the path delay of a clock tree for minimizing clock skew of the clock tree in the IC layouts is described. The method includes the following steps: (a) A design tool calculates a plurality of path delay values from the root cell to each sink via some of the inverters, wherein the maximum one of the path delay values recorded on the sinks serves as a target value, respectively; (b) The design tool compares the path delay value of each sink with the delay value of the adjacent sink from each sink to the root cell for recording the compared higher value on each inverter until the higher compared values are recorded, respectively, in the inverters and the root cell; (c) The design tool compares the path delay value on each inverter with the target value from the root cell to the sinks to determine whether to change the cell type of the inverter from a current cell type to a new cell type by selecting the new cell type from the type database; (d) The design tool adds the difference value to the original value for updating the original value recorded in this inverter; and (e) The design tool adds the difference value to the values recorded on the downstream inverters relative to the inverter for repeatedly updating the values recorded on the downstream inverters and sinks to minimize the clock skew of the clock tree. | 03-05-2009 |