Abstract: An electronic device includes a touch screen, a proximity sensor and a processor. The touch screen includes transmitting electrodes and receiving electrodes configured for sensing touch events on the touch screen. The proximity sensor is configured for sensing approach of an external object. The processor is coupled to the touch screen and the proximity sensor. When the proximity sensor senses a distance to the external object is under a predetermined threshold, the processor generates a request, transmits the request to the external object via the transmitting electrodes, receives a response from the external object via the receiving electrodes, and performs an action after receiving the response.

Abstract: A video data displaying system comprising a first electronic device and a second electronic device. The first electronic device comprises: a data receiver, for receiving video data; a first displaying device, for displaying the video data; and a connecting interface. The second electronic device receives relative information related with the video data and transmitting the relative information to the first electronic device if the second electronic device is connected to the first electronic device via the connecting interface. The first displaying device displays the relative information while displaying the video data. In one embodiment, the second electronic comprises a second displaying device smaller than the first displaying device.

Abstract: An electronic device includes a secure element, a touch sensor and a touch sensor controller. The secure element generates a security code for a trusted transaction. The touch sensor includes transmitting electrodes and receiving electrodes configured for sensing touch events on a touch-sensitive area of the electronic device. The touch sensor controller is coupled to the secure element and the touch sensor and controls operations of the touch sensor. The secure element further transmits the security code to the touch sensor controller and the touch sensor controller transmits the security code via the transmitting electrodes.

Abstract: An electronic device includes a touch screen, a proximity sensor and a processor. The touch screen includes transmitting electrodes and receiving electrodes configured for sensing touch events on the touch screen. The proximity sensor is configured for sensing approach of an external object. The processor is coupled to the touch screen and the proximity sensor. When the proximity sensor senses a distance to the external object is under a predetermined threshold, the processor generates a request, transmits the request to the external object via the transmitting electrodes, receives a response from the external object via the receiving electrodes, and performs an action after receiving the response.

Abstract: A video data displaying system comprising a first electronic device and a second electronic device. The first electronic device comprises: a data receiver, for receiving video data; a first displaying device, for displaying the video data; and a connecting interface. The second electronic device receives relative information related with the video data and transmitting the relative information to the first electronic device if the second electronic device is connected to the first electronic device via the connecting interface. The first displaying device displays the relative information while displaying the video data. In one embodiment, the second electronic comprises a second displaying device smaller than the first displaying device.

Abstract: A footprint of a printed circuit board (PCB) for a leadframe-based package includes a plurality of pads arranged within a central region on a main surface of the PCB; and an array of signal pads disposed within a peripheral region surrounding the central region.

Abstract: A signal processing device includes a signal processing chip and a conducting path. The signal processing chip includes: a first port capable of receiving a first oscillating signal; a second port capable of outputting a second oscillating signal derived from the first oscillating signal; and a third port. The conducting path is external to the signal processing chip and coupled to the second port and the third port, and the conducting path is capable of transmitting the second oscillating signal outputted from the second port to the third port.

Abstract: A protection circuit, applied to a flash memory including a power supply pin, includes a capacitor and a switch. A power supply provides a reference voltage. The capacitor is electrically connected to the power supply pin and a ground point. The switch is electrically connected between the power supply pin and the power supply. When the reference voltage is higher than a threshold voltage, the switch is turned on, such that the reference voltage is inputted into the power pin via the switch. When the reference voltage is lower than the threshold voltage, the switch is turned off.

Abstract: The present invention provides circuit and associated method capable of identifying keys and implementing keypad; the circuit includes a plurality of input nodes and a decoder; each input nodes is associated with multiple keys, and the decoder is capable of distinguishing each of the multiple keys of an input node such that a keypad can be implemented with low pin count.

Abstract: A footprint of a printed circuit board (PCB) for a leadframe-based package includes a plurality of pads arranged within a central region on a main surface of the PCB; and an array of signal pads disposed within a peripheral region surrounding the central region.

Abstract: A signal processing device includes a signal processing chip and a conducting path. The signal processing chip includes: a first port capable of receiving a first oscillating signal; a second port capable of outputting a second oscillating signal derived from the first oscillating signal; and a third port. The conducting path is external to the signal processing chip and coupled to the second port and the third port, and the conducting path is capable of transmitting the second oscillating signal outputted from the second port to the third port.

Abstract: A communication system is provided and includes a current control circuit, a processing module, and a detection circuit. The current control circuit has an output node. The current control circuit is capable of drawing input current to the output node. The processing module is capable of operating according to a current accumulated at the output node and an output voltage at the output node. The detection circuit is capable of detecting the output voltage and controlling the processing module according to a detection result of the detection circuit. When the detection circuit detects that the output voltage is lower than a threshold, the detection circuit is capable of controlling the processing module to decrease an output power of a power amplifier or to decrease an operating frequency of a processor.

Abstract: A wireless communication device (100) includes a communicating module (16), a sensor module (26) and a decoding module (28). The communicating module receives and sends character messages. The sensor module receives vibration and transforms the vibration into input signal. The decoding module is electronically connected to the communicating module and the sensor module. The decoding module receives the input signals from the sensor module and transforms the input signals into character messages and transfers the character messages to the communicating module to send.

Abstract: A protection circuit, applied to a flash memory including a power supply pin, includes a capacitor and a switch. A power supply provides a reference voltage. The capacitor is electrically connected to the power supply pin and a ground point. The switch is electrically connected between the power supply pin and the power supply. When the reference voltage is higher than a threshold voltage, the switch is turned on, such that the reference voltage is inputted into the power pin via the switch. When the reference voltage is lower than the threshold voltage, the switch is turned off.

Abstract: A wireless communication device (100) includes a communicating module (16), a sensor module (26) and a decoding module (28). The communicating module receives and sends character messages. The sensor module receives vibration and transforms the vibration into input signal. The decoding module is electronically connected to the communicating module and the sensor module. The decoding module receives the input signals from the sensor module and transforms the input signals into character messages and transfers the character messages to the communicating module to send.

Abstract: A series-parallel resonant matching circuits and a broadband power amplifier thereof are disclosed. The series-parallel resonant matching circuit is connected to the last power transistor and the next power transistor. The series-parallel resonant matching circuit comprises a series matching inductor, a parallel matching inductor and an impedance transformation unit. The impedance transformation unit is connected between the series matching inductor and the intrinsic parallel matching inductor for transforming impedance. The parallel matching inductor and the parallel capacitor of a last level power transistor constitute a LC parallel resonant circuit, the series matching inductor and the series intrinsic capacitor of a next level power transistor constitute a LC series resonant circuit. Besides, the intrinsic parallel capacitance is a drain-to-source capacitor for the power transistor. The intrinsic series capacitance is a gate-to-source capacitor for the power transistor.

Abstract: A method of fine tuning a thermally tunable superconductor filter. A HTS filter is placed in a vacuum condition at a superconductive transfer temperature, then the ambient temperature is reduced to a temperature lower than the superconductive transfer temperature. The dynamic inductance of a resonator inside the HTS filter is varied with the varying ambient temperature by controlling the thermal heater around the open end of the resonator, so as to tune the resonant frequency of the HTS filter.