Abstract: A touch sensing reading device includes an operation circuit and an adjustment circuit. The operation circuit includes a feedback capacitor, receives a sensing signal through a first input terminal, receives a driving signal through a second input terminal, and feedbacks an output signal via an output terminal through the feedback capacitor and the first input terminal. The adjustment circuit provides an adjustment signal to the first input terminal of the operation circuit, and adjusts the output signal. A first sub-signal in the adjustment signal is set based on the inverted signal of the driving signal. A second sub-signal in the adjustment signal is set based on the inverted signal of the sensing signal.

Abstract: A driving device and a method for generating a driving voltage are provided. The method for generating the driving voltage is applicable to a driving device of a touch panel. The method includes: generating multiple different reference voltages; providing a voltage selector to select and output each of the reference voltages in each of multiple time intervals to generate a driving voltage; and setting a time length for each of the time intervals according to whether a signal power of the driving device is greater than a set value.

Abstract: A current driving device includes a switch, a current generator and a brightness divider. The switch is coupled between the current generator and a light emitting element, and switches between conduction and non-conduction based on a pulse signal. Based on a magnitude control signal, the current generator generates a drive current that has a magnitude related to the magnitude control signal, and that flows through the light emitting element when the switch conducts. The brightness divider is coupled to the switch and the current generator, and generates the pulse signal and the magnitude control signal based on a brightness value such that average brightness of the light emitting element is related to the brightness value.

Abstract: A method for locking the frequency of a USB device includes the following steps. Receive a USB data signal and generate multiple reference clock signals. Compare the frequency of the reference clock signals with a bit rate of the USB data signal to generate a control signal. Adjust the operating frequency of an output clock of the USB device according to the control signal.