Abstract: A debug circuit set in a host device includes a first USB interface, a USB communication unit, a UART communication unit, a detection unit and a switch unit. The USB communication unit is configured to communicate with other devices. The UART communication unit is configured to obtain debug information of the host device. The detection unit is configured to output a detection signal. The debug circuit communicates with other devices through the first USB interface when the switch unit connects the USB communication unit with the first USB interface. The debug circuit outputs the debug information through the first USB interface when the switch unit connects the UART communication unit with the first USB interface.

Abstract: A charger includes a mains plug, a voltage conversion unit, a power port, a feedback resistor module, and a microprocessor. The power port includes a positive voltage pin, a negative voltage pin, and a control pin. The feedback resistor module is connected between the negative voltage pin, a feedback port of the voltage conversion unit, and ground. The microprocessor is connected to the control pin and the feedback resistor module. The feedback port of the voltage conversion unit outputs a constant voltage, and a current output by the charger is equal to a ratio between the constant voltage and a resistance value of the feedback resistor module. The microprocessor increases the resistance value of the feedback resistor module when receiving a first control signal, and decreases the resistance value of the feedback resistor module when receiving a second control signal.

Abstract: A battery charging circuit includes a power management IC, a controller, and a feedback circuit. The power management IC is configured to manage the power charging to a battery. The controller is configured to provide a preset value of current and a preset value of voltage. The feedback circuit is coupled to the power management IC and the controller and the battery. The feedback circuit compares the preset value of current with a charging current to the battery, and compares the preset value of voltage with a charging voltage to the battery to obtain results of comparison, and provides a feedback signal to the power management IC according to the comparisons. The power management IC decreases or increases power output upon the comparisons.

Abstract: A universal serial bus (USB) adaptor supplies a large charging current to charge a device. The USB adaptor includes a voltage conversion circuit, a USB interface, a current detection circuit, a first switch, a second switch, and a third switch. The USB interface includes a power pin, a first data pin, a second data pin, and a ground pin. The current detection circuit detects a charging current of the device, and converts the charging current into a voltage to compare the charging current with a reference voltage to output a comparison signal. The first switch, the second switch, and the third switch control connection relationships between the power pin and the first data pin, the first data pin and the second data pin, and the second data pin and the ground pin according to the comparison signal, respectively. A USB cable is also provided.

Abstract: A charger includes a mains plug, a voltage conversion unit, a power port, a feedback resistor module, and a microprocessor. The power port includes a positive voltage pin, a negative voltage pin, and a control pin. The feedback resistor module is connected between the negative voltage pin, a feedback port of the voltage conversion unit, and ground. The microprocessor is connected to the control pin and the feedback resistor module. The feedback port of the voltage conversion unit outputs a constant voltage, and a current output by the charger is equal to a ratio between the constant voltage and a resistance value of the feedback resistor module. The microprocessor increases the resistance value of the feedback resistor module when receiving a first control signal, and decreases the resistance value of the feedback resistor module when receiving a second control signal.

Abstract: There is provided an actuator including a displacement unit made of a mixture of a silicone-containing elastomer and an ionic liquid; and multiple electrodes provided to apply an electric field to a part or whole of the displacement unit. Here, the displacement unit is deformed by applying a voltage between the multiple electrodes.

Abstract: An audio signal output circuit capable of decreasing pop noise includes an acoustic output device for generating sound, an audio signal generating circuit coupled to the acoustic output device for outputting audio signals, and a noise reduction circuit coupled between the acoustic output device and the audio signal generating circuit for smoothing dc level variation of audio signals outputted from the audio signal generating circuit.

Abstract: A method for reporting back a status of a mobile phone includes: (a) a second mobile phone sending a monitoring message to a first mobile phone via a telecommunication system service terminal when the first mobile phone is at a first status; (b) sending a reporting message to the second mobile phone according to the monitoring message when the first mobile phone is at a second status; (c) the second mobile phone comparing data of the monitoring message with data of the reporting message to generate a comparison result after receiving the reporting message; and (d) the second mobile phone displaying an informing frame according to the comparison result.

Abstract: An interface for detecting connected peripheral devices. The interface comprises a jack and a control unit determining the power requirements of peripheral devices, the control unit detecting the potential of two specified nodes upon connection of the device. If power is required, the control unit supplies the power and performs related commands according to device identification received from the connection. If no power is required, the control unit measures a resistor-capacitor (RC) equivalent value inside the peripheral device, and compares the measured RC values with RC values in a database.

Abstract: The present invention provides a power source protection device comprising a switching circuit and an overload circuit coupled between the switching circuit and power source for driving the switching circuit to limit current stopping the increase in the current output by the power source. Thus, the device is protected against overcurrent damage and maintains stable system operation.

Abstract: A Bluetooth mobile phone includes a first module and a second module detachable from the first module. When the first and second modules are separated, signals are wirelessly transmitted between the first and second modules in a Bluetooth mode. When combining the first and second modules, a connection interface of the first module is coupled to a connection interface of the second module, such that signals are substantially transmitted through the two interfaces.

Abstract: A hand-held electronic device and a method for inputting users' instruction are disclosed. The hand-held electronic device includes a sensing device and a detecting circuit. The sensing device includes a passive unit and a receiving space. The passive unit moves in the receiving space. When the hand-held electronic device is tilted to a first direction, the passive unit moves to a second direction corresponding to the first direction. The detecting circuit detects the movement of the passive unit and generates a signal to change the operating status of the hand-held electronic device.

Abstract: The present invention provides a power source protection device comprising a switching circuit and an overload circuit coupled between the switching circuit and power source for driving the switching circuit to limit current stopping the increase in the current output by the power source. Thus, the device is protected against overcurrent dqmage and maintains stable system operation.

Abstract: An interface for detecting connected peripheral devices. The interface comprises a jack and a control unit determining the power requirements of peripheral devices, the control unit detecting the potential of two specified nodes upon connection of the device. If power is required, the control unit supplies the power and performs related commands according to device identification received from the connection. If no power is required, the control unit measures a resistant-capacitor (RC) equivalent value inside the peripheral device, and compares the measured RC values with RC values in a database.

Abstract: The present invention provides the novel thermoelectric materials having, in combination, processability and excellent thermoelectric characteristics, the thermoelectric materials being able to provide n-type thermoelectric characteristics in accordance with the nature of the employed inorganic thermoelectric materials; a thermoelectric device employing the materials; and a method for producing the thermoelectric materials.

Abstract: The present invention provides the novel thermoelectric materials having, in combination, processability and excellent thermoelectric characteristics, the thermoelectric materials being able to provide n-type thermoelectric characteristics in accordance with the nature of the employed inorganic thermoelectric materials; a thermoelectric device employing the materials; and a method for producing the thermoelectric materials.