Abstract: A filtering system, adapted to remove a direct current (DC) component and a high frequency noise component of a touch-sensed signal is provided. The filtering system includes: an analog to digital converter for transforming the touch-sensed signal into a discrete-time input signal; a direct current removing unit for removing direct current components of the discrete-time input signal to obtain a differentiated signal; a de-noise unit for removing noise components of the differentiated signal to obtain a de-noise signal; and a reconstructive unit for processing the de-noise signal to obtain an output signal.

Abstract: A microcontroller is disclosed, which includes a memory, a first storage unit, a plurality of second storage units, a multiplexer and a micro-controller unit (MCU). The first storage unit is for being written into with a first code. The second storage units are for being written into with a plurality of second codes. The multiplexer writes the first code and one of the said second codes into the memory according to a control signal so that the memory generates a system code. The MCU reads out the system code come from the memory to perform operations.

Abstract: A display device including a display panel and a driving circuit is provided, wherein the driving circuit includes a synchronizer and a driver. The synchronizer synchronizes a plurality of external control signals according to an internal clock and accordingly generates a plurality of internal control signals. The driver reads the internal control signals according to the internal clock and accordingly generates a plurality of driving signals to drive the display panel.

Abstract: A scanning method of a touch panel is provided. The touch panel has a horizontal channel group including a plurality of horizontal channels and a vertical channel group including a plurality of vertical channels. According to the scanning method, N channels may be scanned simultaneously, wherein the N channels are selected from the horizontal channel group or the vertical channel group, the N channels are not adjacent to each other, N is a positive integer, and N is less than a channel amount of the selected channel group. Thereby, the scanning speed and the sensing accuracy of the touch panel using the scanning method are enhanced.

Abstract: A device for driving data used for a liquid crystal display includes: a first latch circuit and a second latch circuit for forming first latched data and second latched data; a first regulating circuit and a second regulating circuit for regulating the first latched data or the second latched data; a first switch, a second switch, a third switch and a fourth switch respectively coupled between the first latch circuit or the second circuit and the first regulating circuit or the second regulating circuit. The first and the second latched data become a first pair of differential signals when the first switch and the fourth switch are turned on. The first and the second latched data become a second pair of differential signals which are opposite to the first pair of differential signals when the second switch and the third switch are turned on.

Abstract: The present application describes a system and method for driving a power supply device in an initial activation stage. In one embodiment, the method comprises providing in the power supply device at least one voltage regulator that is coupled with a voltage output adapted to supply a power voltage to a client device, receiving a signal indicative of an activation of the power supply device, and converting the at least one voltage regulator to an equivalent shunting circuit coupled between the voltage output and a reference voltage. Before power voltages are applied at the outputs of the power supply device, shunting paths are thus provided for releasing undesired currents.

Abstract: A common voltage driving circuit configured to output a common voltage to high-resolution TFT-LCD is provided. The common voltage driving circuit includes: a first pad coupled to a common electrode loading of an LCD for sensing a common voltage of the common electrode loading; a second pad coupled to the common electrode loading; a first amplifying device receiving a high level voltage and the sensed common voltage of the common electrode loading for generating a first overdrive voltage to the second pad thereby improving transient response of the common voltage with high level; and a second amplifying device receiving a low voltage level voltage and the sensed common voltage of the common electrode loading for generating a second overdrive voltage to the second pad thereby improving transient response of the common voltage with low level.

Abstract: A touch panel including a plurality of panel capacitors, a first switching unit, a second switching unit, a first charging unit, a control unit and a counter is provided. Each of the panel capacitors is sequentially selected as an object capacitor. The first switching unit and the second switching unit switch the voltages received by the two terminals of the object capacitor. The control unit controls a first charging current provided by the first charging unit according to the variation in the terminal voltages of the object capacitor, and generates a comparison signal accordingly. The counter counts the comparison signal and the touch panel identifies the variation in the capacitance value of the object capacitor by using a count value generated by the counter.

Abstract: A booster and a voltage detection method thereof are provided herein. The booster includes a charge pump circuit and a voltage detection circuit. The charge pump circuit is controlled by a switching signal to generate an actual voltage according to the basis voltage, wherein the actual voltage is a product of the basis voltage multiplied by a first preset multiplier. The voltage detection circuit is coupled to the charge pump circuit. The voltage detection circuit selects one of a plurality of first multipliers to serve as the first preset multiplier according to a comparison result between the basis voltage and a target voltage, and generates the switching signal corresponding to the first preset multiplier. Therefore, the booster can properly select the first preset multiplier to generate the actual voltage as the basis voltage changes.

Abstract: A booster and a voltage detection method thereof are provided herein. The booster includes a charge pump circuit and a voltage detection circuit. The charge pump circuit is controlled by a switching signal to generate an actual voltage according to the basis voltage, wherein the actual voltage is a product of the basis voltage multiplied by a first preset multiplier. The voltage detection circuit is coupled to the charge pump circuit. The voltage detection circuit selects one of a plurality of first multipliers to serve as the first preset multiplier according to a comparison result between the basis voltage and a target voltage, and generates the switching signal corresponding to the first preset multiplier. Therefore, the booster can properly select the first preset multiplier to generate the actual voltage as the basis voltage changes.

Abstract: A charge pump with limited peak current and improved application flexibility and an LCD having the same. The charge pump has more than three switches in a charge path and more than three switches in a pump path. Furthermore, the charge pump has a voltage detector detecting voltage of the output terminal of the charge pump and a charge pump controller controlling the switches based on the detected voltage. According to the detected voltage, the charge pump controller determines the number of turning-on switches in the charge path and determines the number of turning-on switches in the pump path.

Abstract: A touch control system for controlling a touch panel includes a controller and a first sensing circuit. The controller generates and outputs a control signal. The first sensing circuit is coupled to the control device and to sensing lines of the touch panel, and the first sensing circuit receives the control signal from the controller, and generates at least one scan control signal according to the received control signal to determine a scan timing setting.

Abstract: A touch panel has a panel capacitor, a first capacitor, and a second capacitor. The panel capacitor and the first capacitor are charged and discharged cyclically according to a first phase signal and a second phase signal, such that an input voltage associated with the panel capacitor and the first capacitor is applied to a control circuit. The control circuit charges and discharges a second capacitor based on the input voltage and a reference voltage to compensate the difference between the input voltage and the reference voltage. The capacitance of the panel capacitor could be calculated based on the frequency of charging and discharging the second capacitor.

Abstract: A switched-capacitor tracking apparatus including a variable capacitor, an auxiliary capacitor, and a plurality of switches, and an operating method thereof are provided. In a charge period, a first reference voltage charges a panel capacitor, and a second reference voltage charges the variable capacitor. In a detection period, a control circuit detects a parallel connected voltage of the panel capacitor and the variable capacitor. The control circuit compares a third reference voltage and the parallel connected voltage. According to a comparison result, the control circuit dynamically determines whether to parallel connect the auxiliary capacitor to the variable capacitor. If all the comparison results accumulated in a statistics period are a first logic value, then the control circuit increases a capacitance of the variable capacitor. Moreover, if all the comparison results are a second logic value in the statistics period, then the control circuit decreases the capacitance of the variable capacitor.

Abstract: The present application describes a system and method for driving a power supply device in an initial activation stage. In one embodiment, the method comprises providing in the power supply device at least one voltage regulator that is coupled with a voltage output adapted to supply a power voltage to a client device, receiving a signal indicative of an activation of the power supply device, and converting the at least one voltage regulator to an equivalent shunting circuit coupled between the voltage output and a reference voltage. Before power voltages are applied at the outputs of the power supply device, shunting paths are thus provided for releasing undesired currents.

Abstract: A repair module for repairing one of n bit lines through m bit bus in a memory, a repair device using the same, and a method thereof are provided herein, wherein m?n. In the repair method, a switching control signal and a selecting control signal are generated according to an index value of the one of n bit lines. A dummy line is switched to the one of n bit lines by shifting from 1st bit line to the one of n bit line one by one according to the switching control signal for replacing the one of n bit lines. Then, the Lth bit line or the dummy line is selected for signal transmission according to the selecting control signal, wherein 1?L?m. Therefore, the data can be transmitted through the undamaged bit line by replacing the defective bit line with the dummy line.

Abstract: A buffer for a driving circuit includes a first transistor, a second transistor and a slew rate controlling circuit. The first transistor serves to provide a current to an output terminal. The second transistor serves to sink a current from the output terminal. The slew rate controlling circuit serves to control slew rate of at least one of the first transistor and the second transistor according to the input signal. The managing circuit serves to prevent the first transistor and the second transistor from turning on simultaneously.

Abstract: A slew rate control circuit is disclosed. An output impedance buffer and a slew rate buffer are coupled in parallel. An edge detector detects an input signal to accordingly control the output impedance buffer and the slew rate buffer, such that the input signal passes through the slew rate buffer during a rising or falling time period, and the input signal only passes through the output impedance buffer during a stable time period, thereby conforming to specification requirements for the slew rate and the output impedance at the same time.

Abstract: A slew rate control circuit is disclosed. An output impedance buffer and a slew rate buffer are coupled in parallel. An edge detector detects an input signal to accordingly control the output impedance buffer and the slew rate buffer, such that the input signal passes through the slew rate buffer during a rising or falling time period, and the input signal only passes through the output impedance buffer during a stable time period, thereby conforming to specification requirements for the slew rate and the output impedance at the same time.

Abstract: A buffer for a driving circuit includes a first transistor, a second transistor and a slew rate controlling circuit. The first transistor serves to provide a current to an output terminal. The second transistor serves to sink a current from the output terminal. The slew rate controlling circuit serves to control slew rate of at least one of the first transistor and the second transistor according to the input signal. The managing circuit serves to prevent the first transistor and the second transistor from turning on simultaneously.