Abstract: A power supply system with current sharing includes a current sharing bus, a plurality of power supply units, and a plurality of controllers. The power supply units are connected to each other through the current sharing bus. Each power supply unit provides a current sharing signal value to the current sharing bus, and provides an output current to a load. Each controller receives current sharing signal values provided from other power supply units and current signal values corresponding to the output currents. When determining that the current signal value is less than a reference current sharing signal value, the controller increases an output voltage of the power supply unit to increase the output current. Otherwise, the controller decreases the output voltage to decrease the output current so that so that the output currents of the power supply units are shared to supply power to the load.

Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.

Abstract: A measuring current generation circuit coupled to a setting resistor is disclosed. The generation circuit includes a first measuring terminal, a second measuring terminal, a first transconductance amplifier, a second transconductance amplifier and an output circuit. The first transconductance amplifier has a first input terminal and a second input terminal. The first input terminal is coupled to one terminal of the setting resistor. The second input terminal is coupled to another terminal of the setting resistor and coupled to the first measuring terminal. The second transconductance amplifier has a third input terminal and a fourth input terminal. The output circuit is coupled to output terminals of the first transconductance amplifier and the second transconductance amplifier respectively and has a first output terminal and a second output terminal. The first output terminal is coupled to the first input terminal. The second output terminal is coupled to the second measuring terminal.

Abstract: A measuring current generation circuit coupled to a setting resistor is disclosed. The generation circuit includes a first measuring terminal, a second measuring terminal, a first transconductance amplifier, a second transconductance amplifier and an output circuit. The first transconductance amplifier has a first input terminal and a second input terminal. The first input terminal is coupled to one terminal of the setting resistor. The second input terminal is coupled to another terminal of the setting resistor and coupled to the first measuring terminal. The second transconductance amplifier has a third input terminal and a fourth input terminal. The output circuit is coupled to output terminals of the first transconductance amplifier and the second transconductance amplifier respectively and has a first output terminal and a second output terminal. The first output terminal is coupled to the first input terminal. The second output terminal is coupled to the second measuring terminal.

Abstract: A touch sensing circuit is provided. The touch sensing circuit includes: a touch capacitor, for being touched; a touch capacitor frequency detection unit, coupled to the touch capacitor, for detecting an output frequency from the touch capacitor; a reference frequency generation unit, for generating a reference frequency; a calculation unit, coupled to the touch capacitor frequency detection unit and the reference frequency generation unit, for calculating the variation of the difference between the output frequency from the touch capacitor and the reference frequency; and a determination unit, coupled to the calculation unit, for determining whether the touch capacitor is being touched based on whether the variation of the difference is greater than a criterion value.

Abstract: The present invention discloses a touch-sensing method, applied to a touch-sensing circuit, wherein the touch-sensing circuit includes a detection circuit and a comparison circuit. The touch-sensing method includes: enabling a receiving node to be coupled to a ground during a first discharge period, wherein the receiving node is coupled between the detection circuit and the comparison circuit; enabling the receiving node to obtain a first reference voltage during a first charge period; enabling the receiving node to be coupled to the ground during a second discharge period; and enabling the receiving node to obtain a second reference voltage and producing a sensing result according to the first reference voltage and the second reference voltage by the comparison circuit during a second charge period, wherein the sensing result represents whether a touch event occurs at a first node of the touch-sensing circuit.

Abstract: The present invention discloses a sensing circuit including a sensing device, a first amplifier circuit, a high-pass filter, a second amplifier circuit and a determination circuit. The sensing device produces a sensing signal. The first amplifier circuit reduces high-frequency components of the sensing signal and amplifies low-frequency components of the sensing signal to produce a first amplified signal. The high-pass filter removes the direct current of the first amplified signal to produce a filtered signal. The second amplifier amplifies low-frequency components of the filtered signal according to a first predetermined voltage to produce a second amplified signal. The determination circuit determines whether the second amplified signal is higher than a second predetermined voltage and lower than a third predetermined voltage, and produces a detection result when the second amplified signal is higher than the second predetermined voltage or lower than the third predetermined voltage.

Abstract: A transmission interface for a touch system is provided. The touch system includes a micro controller and a touch device, the transmission interface comprising: a single transmission wire, connected between the micro controller and the touch device, for bi-directional transmission between the micro controller and the touch device.

Abstract: A touch sensing circuit is provided. The touch sensing circuit includes: a touch capacitor, for being touched; a touch capacitor frequency detection unit, coupled to the touch capacitor, for detecting an output frequency from the touch capacitor; a reference frequency generation unit, for generating a reference frequency; a calculation unit, coupled to the touch capacitor frequency detection unit and the reference frequency generation unit, for calculating the variation of the difference between the output frequency from the touch capacitor and the reference frequency; and a determination unit, coupled to the calculation unit, for determining whether the touch capacitor is being touched based on whether the variation of the difference is greater than a criterion value.

Abstract: The present invention discloses a touch-sensing method, applied to a touch-sensing circuit, wherein the touch-sensing circuit includes a detection circuit and a comparison circuit. The touch-sensing method includes: enabling a receiving node to be coupled to a ground during a first discharge period, wherein the receiving node is coupled between the detection circuit and the comparison circuit; enabling the receiving node to obtain a first reference voltage during a first charge period; enabling the receiving node to be coupled to the ground during a second discharge period; and enabling the receiving node to obtain a second reference voltage and producing a sensing result according to the first reference voltage and the second reference voltage by the comparison circuit during a second charge period, wherein the sensing result represents whether a touch event occurs at a first node of the touch-sensing circuit.

Abstract: An image auto-calibration method for an image capture device having an image sensor is provided. The method includes the steps of receiving an image matrix; transforming the image matrix into an image signal via the image sensor; generating n first sampling pulses and n second sampling pulses in response to the image signal, wherein one of the first sampling pulses and one of the second sampling pulses constitute a sampling pulse set; calculating an eigenvalue of the image signal according to each of the sampling pulse sets; and outputting an image according to the sampling pulse set with the largest eigenvalue.

Abstract: An identification data transmitting circuit for controlling a transmission of an identification data in radio frequency identification tag is provided. The transmitting circuit includes a clock circuit for respectively generating a series of clock signals for elements in the identification data transmitting circuit, an selecting circuit having a counter, a random numeral generator and a comparator for providing an enable signal by means of comparing outputs of the counter and the random numeral generator, and a memory device being electrically connected between the clock circuit and the selecting circuit for storing the identification data of radio frequency identification tag and receiving the enable signal of selecting circuit, so as to output the identification data.