Abstract: An optical touch apparatus is disclosed. The optical touch apparatus comprises a light source emitting module, an optical module, a light sensing module, and a processing module. The optical module and the light sensing module are set around a surface of the optical touch apparatus. The light source emitting module sequentially emits scanning lights uniformly distributed above a direct scanned region of the surface according to a time sequence. When an object forms a touch point on the surface, the object will block the scanning lights and reflected lights reflected by the optical module. The light sensing module generates a sensing result according to the condition the light sensing module receives the scanning lights and the reflected lights. The processing module determines the position of the touch point according to the time sequence and the sensing result.

Abstract: 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.

Abstract: 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 R2R module, the second channel includes a second latching module, a second level-shifting module, a N-type digital/analog converting module, and a second R2R module. The P-type digital/analog converting module and N-type digital/analog converting module are selectively coupled to the first R2R module or the second R2R module. The first latching module receives a first digital signal and the first latching module outputs a first analog signal corresponding to the first digital signal. The second latching module receives a second digital signal and the second latching module outputs a second analog signal corresponding to the second digital signal.

Abstract: 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 R2R module, and a P-type amplifying module, the second channel includes a second latching module, a second level-shifting module, a N-type digital/analog converting module, a second R2R module, and a N-type amplifying module. The P-type digital/analog converting module and N-type digital/analog converting module are selectively coupled to the first R2R module or the second R2R module. The first latching module receives a first digital signal and the first latching module outputs a first analog signal corresponding to the first digital signal. The second latching module receives a second digital signal and the second latching module outputs a second analog signal corresponding to the second digital signal.

Abstract: An optical touch system is disclosed. The optical touch system comprises a panel apparatus and an optical touch apparatus. The panel apparatus includes a first position and a second position. The optical touch apparatus includes a light emitting module, a light path adjusting module, a light sensing module, and a processing module. The light emitting module and the light sensing module are set on the first position and the second position respectively. The light emitting module emits a sensing light, and the sensing light is reflected by the light path adjusting module to form a reflected light. The light sensing module receives the reflected light and generates a sensing result according to whether the light sensing module receives the reflected light. The processing module determines the touch point position formed on the panel apparatus according to the sensing result.

Abstract: 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.

Abstract: 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.

Abstract: A digital logic circuit and a manufacture method of the digital logic circuit thereof are provided. The digital logic circuit includes a voltage rail, a ground rail, and a plurality of logic circuit rails, wherein each of the logic circuit rails is electrically connected to the voltage rail and the ground rail. The logic circuit rail includes a logic unit and an auxiliary unit electrically connected to the voltage rail and the ground rail. The logic unit includes a logic voltage end electrically connected to the voltage rail and a logic ground end electrically connected to the ground rail. The auxiliary unit includes an auxiliary voltage end electrically connected to the voltage rail and an auxiliary ground end electrically connected to the ground rail. At least one of the width ratio between the auxiliary voltage end and the logic voltage end and the width ratio between the auxiliary ground end and the logic ground end is greater than 1.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The invention discloses an electrostatic discharge protection circuit suitable for an integrated circuit system. The integrated circuit system includes a first power terminal, a second power terminal, an internal circuit and a reset signal wiring. The electrostatic discharge protection circuit includes a first transistor and a second transistor. The first transistor has a first gate, a first electrode and a second electrode. The first gate is coupled to the first power-source. The first electrode is electrically connected to the second power-source. The second transistor has a second gate, a third electrode and a fourth electrode, which are electrically connected to the second electrode, the first power-source and the reset signal wiring respectively. When the integrated circuit system is under an electrostatic discharge condition, the first and the second transistors are switched on, so as to equalize the voltage level of the reset signal wiring to the voltage level of the first power terminal.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.