Abstract: A mobile device includes a connector, an audio generator, a biological signal processor, a switch element, and a controller. The switch element has a first terminal and a second terminal. The first terminal of the switch element is coupled to the connector, and the second terminal of the switch element is selectively coupled to either the audio generator or the biological signal processor according to a control signal. The controller is coupled to the audio generator and the biological signal processor, and is configured to generate the control signal.

Abstract: The present invention provides an electronic device comprising at least two light emitters and at least one photo detector. The at least two light emitters comprise a first light emitter and a second light emitter, and the first light emitter emits light whose wavelength is greater than 1000 nanometer (nm); the at least one photo detector is configured to receive the light reflected by a human body to generate a plurality of physiological signals, wherein the physiological signals are arranged to obtain at least two physiological features of the human body.

Abstract: The present invention provides an electronic device including a first electrode set and a second electrode set with an optical sensor. The first electrode set is arranged to contact a first position of a human body, and the second electrode set with the optical sensor is arranged contact a second position of the human body, to receive a plurality of physiological signals to determine at least two physiological features simultaneously.

Abstract: A mobile device includes a connector, an audio generator, a biological signal processor, a switch element, and a controller. The switch element has a first terminal and a second terminal. The first terminal of the switch element is coupled to the connector, and the second terminal of the switch element is selectively coupled to either the audio generator or the biological signal processor according to a control signal. The controller is coupled to the audio generator and the biological signal processor, and is configured to generate the control signal.

Abstract: A buck circuit of a computer includes a voltage input terminal, a voltage output terminal, first and second electronic switches, and first to third field effect transistors (FETs). When the computer is powered on, the signal control terminal of the computer outputs a first control signal to control the first FET to be turned on through the first and second electronic switches, and simultaneously controls the first and third FETs with a pulse width modulation (PWM) control chip. After the computer is powered off, the signal control terminal of the computer outputs a second control signal to control the first FET to be turned off through the first and second electronic switches, and to control the third FET through the PWM control chip.

Abstract: A buck circuit of a computer includes a voltage input terminal, a voltage output terminal, first and second electronic switches, and first to third field effect transistors (FETs). When the computer is powered on, the signal control terminal of the computer outputs a first control signal to control the first FET to be turned on through the first and second electronic switches, and simultaneously controls the first and third FETs with a pulse width modulation (PWM) control chip. After the computer is powered off, the signal control terminal of the computer outputs a second control signal to control the first FET to be turned off through the first and second electronic switches, and to control the third FET through the PWM control chip.

Abstract: A touch module switch circuit includes a universal serial bus (USB) display circuit, a touch module, a first resistor, a second resistor, a first diode, a second diode, a USB switch chip, and a USB interface. The touch module selectively communicates with one of the USB display circuits and the USB interface by control of the USB switch chip together with the first resistor, the second resistor, the first diode, and the second diode.

Abstract: A display device includes a display screen, at least one data interface, and a processor. The display screen is configured for showing images. The at least one data interface is configured for receiving image signal from a computer. The processor includes a processing unit, a first power source, and a second power source. The processing unit is configured for checking whether the data interfaces receive image signals and inputting the image signals into the display screen if the data interfaces receive image signals. The first power source is configured for supplying power to the processing unit continuously. The second power source is configured for supplying power to the display screen when the processing unit detects if the data interfaces receive image signals.

Abstract: A touch module switch circuit includes a universal serial bus (USB) display circuit, a touch module, a first resistor, a second resistor, a first diode, a second diode, a USB switch chip, and a USB interface. The touch module selectively communicates with one of the USB display circuits and the USB interface by control of the USB switch chip together with the first resistor, the second resistor, the first diode, and the second diode.

Abstract: A power adapter for an electronic device selectively works in different modes according to a working state signal of the electronic device. When the electronic device is powered off or on with a battery in a determined charge state, the power adapter controls a relay to turn off the relay to disconnect power to the electronic device.

Abstract: A multi-phase driving circuit includes a single-phase pulse-width modulation (PWM) controller, a number of drivers, and a number of switch circuits connected to the number of drivers correspondingly. The single-phase PWM controller is configured for providing a single-phase PWM signal. Each of the number of drivers receives the single-phase PWM signal and adjusts a phase of the single-phase PWM signal to output an adjusted PWM signal. Each of the number of drivers also outputs a driving signal. Each of the number of switch circuits receives the adjusted PWM signal and the driving signal from a driver. Each of the number of switch circuits generates a driving voltage controlled by the driving signal and adjusts a phase of the driving voltage controlled by the adjusted PWM signal and then outputs the adjusted driving voltage, so as to make the number of switch circuits output a multi-phase driving voltage to a load.

Abstract: A control circuit for a switching power supply (SPS) includes power input and output interfaces, a relay, a relay driving circuit, a microprocessor, and an alternating current/directing current (AC/DC) converter. The power input interface receives an external alternating current (AC) power signal, and transmits the AC power signal to the SPS via the power output interface. The AC/DC converter transforms the AC power signal into a direct current (DC) power signal to supply for the relay, the relay driving circuit, and the microprocessor. When a computer is turned on, the microprocessor sends a first control signal to control the relay driving circuit to drive the relay to connect the power input and output interfaces. When the computer is turned off, the microprocessor sends a second control signal to control the relay driving circuit to drive the relay to cut off connection between the power input and output interfaces.

Abstract: A power supply saving system includes a power input interface, a power output interface, an alternating current/direct current (AC/DC) converter, a relay, a relay driving circuit, a trigger, and a timing sequence circuit. The AC/DC converter is capable of transforming the AC power signal to direct current (DC) power to supply to the relay, the relay driving circuit, the trigger, and the timing sequence circuit. The timing sequence circuit is capable of controlling the relay driving circuit via the trigger to turn on the relay to connect the power input interface to the power output interface when the timing sequence circuit receives a power-on signal. The timing sequence circuit is capable of controlling the relay driving circuit via the trigger to turn off the relay to cut off connection between the power input interface and the power output interface when the timing sequence circuit receives a power-off signal.

Abstract: A power adapter for an electronic device selectively works in different modes according to a working state signal of the electronic device. When the electronic device is powered off or on with a battery in a determined charge state, the power adapter controls a relay to turn off the relay to disconnect power to the electronic device.

Abstract: A control circuit for a switching power supply (SPS) includes power input and output interfaces, a relay, a relay driving circuit, a microprocessor, and an alternating current/directing current (AC/DC) converter. The power input interface receives an external alternating current (AC) power signal, and transmits the AC power signal to the SPS via the power output interface. The AC/DC converter transforms the AC power signal into a direct current (DC) power signal to supply for the relay, the relay driving circuit, and the microprocessor. When a computer is turned on, the microprocessor sends a first control signal to control the relay driving circuit to drive the relay to connect the power input and output interfaces. When the computer is turned off, the microprocessor sends a second control signal to control the relay driving circuit to drive the relay to cut off connection between the power input and output interfaces.

Abstract: A multi-phase driving circuit includes a single-phase pulse-width modulation (PWM) controller, a number of drivers, and a number of switch circuits connected to the number of drivers correspondingly. The single-phase PWM controller is configured for providing a single-phase PWM signal. Each of the number of drivers receives the single-phase PWM signal and adjusts a phase of the single-phase PWM signal to output an adjusted PWM signal. Each of the number of drivers also outputs a driving signal. Each of the number of switch circuits receives the adjusted PWM signal and the driving signal from a driver. Each of the number of switch circuits generates a driving voltage controlled by the driving signal and adjusts a phase of the driving voltage controlled by the adjusted PWM signal and then outputs the adjusted driving voltage, so as to make the number of switch circuits output a multi-phase driving voltage to a load.

Abstract: A power supply saving system includes a power input interface, a power output interface, an alternating current/direct current (AC/DC) converter, a relay, a relay driving circuit, a trigger, and a timing sequence circuit. The AC/DC converter is capable of transforming the AC power signal to direct current (DC) power to supply to the relay, the relay driving circuit, the trigger, and the timing sequence circuit. The timing sequence circuit is capable of controlling the relay driving circuit via the trigger to turn on the relay to connect the power input interface to the power output interface when the timing sequence circuit receives a power-on signal. The timing sequence circuit is capable of controlling the relay driving circuit via the trigger to turn off the relay to cut off connection between the power input interface and the power output interface when the timing sequence circuit receives a power-off signal.