Abstract: A multi-port power supply apparatus and an operation method thereof are provided. In an embodiment, the multi-port power supply apparatus includes a plurality of USB ports, a plurality of power converters, and a common control circuit. The USB ports include a first USB port and a second USB port. The power converters are configured to supply power to the USB ports. The common control circuit is configured to obtain power variations of the USB ports, and correspondingly control the power converters to supply power to the USB ports according to the power requirements of the USB ports. The common control circuit dynamically diverts a power difference between a first power of the first USB port at a first time and a second power of the first USB port at a second time to the second USB port.

Abstract: A dock and an operation method therefor are provided. The dock is suitable for propping up a mobile communication device. The dock includes an audio-receiving circuit, a rotating module, a communication circuit, and a controller circuit. The controller circuit is coupled to the audio-receiving circuit, the rotating module, and the communication circuit. The controller circuit transmits at least one of a plurality of audio signals generated by the audio-receiving circuit to the mobile communication device through the communication circuit, and determines an audio direction of an audio source according to the plurality of audio signals. The controller circuit controls the rotating module to rotate according to the audio direction, so as to bring the mobile communication device face toward the audio source.

Abstract: The USB chipset including a data processing unit, a transmitting unit, a first pin set and a second pin set is provided. The data processing unit generates a plurality of transmission information according to first information provided by a first device. The transmitting unit processes the transmission information to generate an output signal. The first pin set is configured to transmit the output signal to a second device. The second pin set is configured to transmit the output signal to the second device. When the first pin set transmits the output signal to the second device, the second pin set does not transmit the output signal to the second device. When the second pin set transmits the output signal to the second device, the first pin set does not transmit the output signal to the second device.

Abstract: A multi-port power supply apparatus and a power supplying method thereof are provided. The multi-port power supply apparatus includes a power supply circuit, a plurality of connecting ports, a plurality of power converters, and a common control circuit. The power supply circuit is configured to provide a source electric energy to the power converters. Any one of the power converters converts the source electric energy into an output electric energy and outputs the output electric energy to the corresponding connecting port. The common control circuit dynamically adjusts the source electric energy by controlling the power supply circuit according to a plurality of voltage demands and a plurality of power demands of the connecting ports, so as to enhance voltage conversion efficiency of the multi-port power supply apparatus.

Abstract: A current sensor includes a current sensing resistor, a first transistor, a second transistor, a bias voltage generating circuit, and a current mirror. The first terminal of the first transistor is coupled to the first terminal of the current sensing resistor. The first terminal of the second transistor is coupled to the second terminal of the current sensing resistor. The bias voltage generating circuit supplies a first bias voltage to the control terminal of the first transistor and a second bias voltage to the control terminal of the second transistor. The first bias voltage and the second bias voltage are dependent on the voltage of the first input terminal or the voltage of the second input terminal. The two current terminals of the current mirror are coupled to the second terminals of the second transistor and the first transistor, respectively.

Abstract: A multi-port power supply apparatus and its operation method are provided. The multi-port power supply apparatus includes a voltage source circuit, a first voltage converter, a second voltage converter and a first common control circuit. The voltage source circuit provides a source voltage. The first voltage converter converts the source voltage into a first output voltage and outputs the first output voltage to a first connecting port of the multi-port power supply apparatus. The second voltage converter converts the source voltage into a second output voltage and outputs the second output voltage to a second connecting port of the multi-port power supply apparatus. The first common control circuit adjusts the source voltage according to a first voltage demand of the first connecting port and a second voltage demand of the second connecting port. Thus, a voltage conversion efficiency of the multi-port power supply apparatus is enhanced.

Abstract: The present invention provides a universal serial bus (USB) device and an operating method thereof. The USB device includes a plurality of Downstream Facing Ports (DFPs) and a control circuit. When a first external device is connected to the first DFP and the second DFP is not connected to any external device, the control circuit maintains the first DFP as one of a power source port and a power sink port according to the first external device, and maintains the second DFP as other one of the power source port and the power sink port regardless of whether the second DFP is connected to a second external device later until the first external device is removed from the first DFP.

Abstract: A universal serial bus circuit including a power circuit and a terminating circuit is provided. The power circuit provides a differential signal. The terminating circuit is coupled to the power circuit. The terminating circuit receives the differential signal through the first signal output terminal and the second signal output terminal, and the terminating circuit includes a first load circuit and a second load circuit. When the universal serial bus circuit is operated in a handshake mode, the terminating circuit receives the differential signal through the first load circuit and the second load circuit, and outputs a pulse signal through the first signal output terminal and the second signal output terminal. When the universal serial bus circuit is operated in a normal mode, the terminating circuit receives the differential signal through the first load circuit, and outputs a data signal through the first signal output terminal and the second signal output terminal.