Abstract: A semiconductor device includes a power supply circuit which generates an output voltage to be supplied to a USB device connected to a USB connector, a sensing circuit which senses an output voltage or an output state of the power supply circuit, a control circuit which controls the power supply circuit, and a register which stores an output set voltage value associated with the power supply circuit or various types of information. The control circuit outputs a notification signal based on a result of sensing by the sensing circuit to the outside.

Abstract: A semiconductor device includes a power supply circuit which generates an output voltage to be supplied to a USB device connected to a USB connector, a sensing circuit which senses an output voltage or an output state of the power supply circuit, a control circuit which controls the power supply circuit, and a register which stores an output set voltage value associated with the power supply circuit or various types of information. The control circuit outputs a notification signal based on a result of sensing by the sensing circuit to the outside.

Abstract: Provided is a wireless power supply system including a power transmitting apparatus and a power receiving apparatus. The power transmitting apparatus includes a power transmitting coil that transmits AC power to the power receiving apparatus, a first modulation/demodulation unit that performs a modulation/demodulation process on the AC power of the power transmitting coil, a first transreceiver unit that transmits application data to the power receiving apparatus via the first modulation/demodulation unit.

Abstract: In an ink supply system, a main ink tank and an ink head are connected together via a main supply channel. A sub-ink tank is connected to the main supply channel via a sub-supply channel. An upstream-side valve is provided on an upstream-side portion of the main supply channel. During standby, a first standby setting processor of a controller sets a first standby state in which a first upstream-side valve is open, and a second standby setting processor sets a second standby state in which the first upstream-side valve is closed. A standby state determination processor determines whether or not the amount of time elapsed from when a setting operation was done by the first standby setting processor or the second standby setting processor is greater than or equal to a first amount of time. The standby state switching processor switches between the first standby state and the second standby state when it is determined that the elapsed time is greater than or equal to the first amount of time.

Abstract: In an ink supply system, a main ink tank and an ink head are connected together via a main supply channel. A sub-ink tank is connected to the main supply channel via a sub-supply channel. An upstream-side valve is provided on an upstream-side portion of the main supply channel. During standby, a first standby setting processor of a controller sets a first standby state in which a first upstream-side valve is open, and a second standby setting processor sets a second standby state in which the first upstream-side valve is closed. A standby state determination processor determines whether or not the amount of time elapsed from when a setting operation was done by the first standby setting processor or the second standby setting processor is greater than or equal to a first amount of time. The standby state switching processor switches between the first standby state and the second standby state when it is determined that the elapsed time is greater than or equal to the first amount of time.

Abstract: A semiconductor device includes a power supply circuit which generates an output voltage to be supplied to a USB device connected to a USB connector, a sensing circuit which senses an output voltage or an output state of the power supply circuit, a control circuit which controls the power supply circuit, and a register which stores an output set voltage value associated with the power supply circuit or various types of information. The control circuit outputs a notification signal based on a result of sensing by the sensing circuit to the outside.

Abstract: To satisfy the NFC communication standard in wireless charging with a shared antenna, used for NFC communication. A power supply unit includes a voltage step-down circuit 331, a charge control circuit 332, and a communication controller power supply circuit 333. The voltage step-down circuit includes a switching regulator 200, and a selection circuit 206 and 208 which can select an output path PT1 of the switching regulator and a bypass path PT2 of the switching regulator. The voltage step-down circuit includes a selection control circuit 207. The selection control circuit supplies voltage to the communication controller power supply circuit via the bypass path at the time of activating the communication controller. Since the output voltage of the series regulator stabilizes in a shorter time than the switching regulator, it becomes possible to keep the time from when RF power rises to when initial communication becomes possible, within standards.

Abstract: Provided is a wireless power supply system including a power transmitting apparatus and a power receiving apparatus. The power transmitting apparatus includes a power transmitting coil that transmits AC power to the power receiving apparatus, a first modulation/demodulation unit that performs a modulation/demodulation process on the AC power of the power transmitting coil, a first transreceiver unit that transmits application data to the power receiving apparatus via the first modulation/demodulation unit.

Abstract: There is a need to enable communication circuit operation during a period to charge a battery mounted on a communication apparatus according to wireless charging and to be able to prevent a communication circuit from being destroyed during a period to charge a secondary cell. A communication apparatus 1 includes a communication coil 11, a power receiving portion 12, a charge control portion 13, a first switch portion 18, a second switch portion 15, a communication circuit 16, and a processor 17. A voltage detection circuit 121 of the power receiving portion generates first control signal Cnt1 of first state H when a terminal voltage of the communication coil exceeds power supply threshold voltage Vth0. The first switch portion is controlled to turn on between first terminal T1 and third terminal T3 in response to first control signal Cnt1.

Abstract: A communication apparatus includes a communication coil, a power receiving portion, a charge control portion, a first switch portion, a second switch portion, a communication circuit, and a processor. A voltage detection circuit of the power receiving portion generates first control signal of first state when a terminal voltage of the communication coil exceeds power supply threshold voltage. The first switch portion is controlled to turn on between first terminal and third terminal in response to first control signal. The voltage detection circuit generates second control signal of third state when a terminal voltage of the communication coil exceeds first and second charge threshold voltages during a period to charge the secondary cell. The second switch portion is controlled to turn off in response to second control signal.

Abstract: To satisfy the NFC communication standard in wireless charging with a shared antenna, used for NFC communication. A power supply unit includes a voltage step-down circuit 331, a charge control circuit 332, and a communication controller power supply circuit 333. The voltage step-down circuit includes a switching regulator 200, and a selection circuit 206 and 208 which can select an output path PT1 of the switching regulator and a bypass path PT2 of the switching regulator. The voltage step-down circuit includes a selection control circuit 207. The selection control circuit supplies voltage to the communication controller power supply circuit via the bypass path at the time of activating the communication controller. Since the output voltage of the series regulator stabilizes in a shorter time than the switching regulator, it becomes possible to keep the time from when RF power rises to when initial communication becomes possible, within standards.

Abstract: To satisfy the NFC communication standard in wireless charging with a shared antenna, used for NFC communication. A power supply unit includes a voltage step-down circuit 331, a charge control circuit 332, and a communication controller power supply circuit 333. The voltage step-down circuit includes a switching regulator 200, and a selection circuit 206 and 208 which can select an output path PT1 of the switching regulator and a bypass path PT2 of the switching regulator. The voltage step-down circuit includes a selection control circuit 207. The selection control circuit supplies voltage to the communication controller power supply circuit via the bypass path at the time of activating the communication controller. Since the output voltage of the series regulator stabilizes in a shorter time than the switching regulator, it becomes possible to keep the time from when RF power rises to when initial communication becomes possible, within standards.

Abstract: A wireless charging system includes a power transmission unit for transmitting power and a power reception unit for receiving the power transmitted from the power transmission unit in a non-contact manner and supplying the power to a receiving load. The transmission unit includes a power transmission coil for generating a magnetic field based on an alternating voltage supplied. The power reception unit includes a power reception coil for generating an induction voltage by electromagnetic induction from the magnetic field generated by the power transmission coil, a rectifying unit for rectifying and smoothing the induction voltage generated by the power reception coil, and a voltage step-down unit for stepping down a direct voltage outputted from the rectifying unit. A winding ratio of the power transmission coil and the power reception coil is 1:n where n is an integer larger than 1.

Abstract: A communication apparatus includes a communication coil, a power receiving portion, a charge control portion, a first switch portion, a second switch portion, a communication circuit, and a processor. A voltage detection circuit of the power receiving portion generates first control signal of first state when a terminal voltage of the communication coil exceeds power supply threshold voltage. The first switch portion is controlled to turn on between first terminal and third terminal in response to first control signal. The voltage detection circuit generates second control signal of third state when a terminal voltage of the communication coil exceeds first and second charge threshold voltages during a period to charge the secondary cell. The second switch portion is controlled to turn off in response to second control signal.

Abstract: To satisfy the NFC communication standard in wireless charging with a shared antenna, used for NEC communication. A power supply unit includes a voltage step-down circuit 331, a charge control circuit 332, and a communication controller power supply circuit 333. The voltage step-down circuit includes a switching regulator 200, and a selection circuit 206 and 208 which can select an output path PT1 of the switching regulator and a bypass path PT2 of the switching regulator. The voltage step-down circuit includes a selection control circuit 207. The selection control circuit supplies voltage to the communication controller power supply circuit via the bypass path at the time of activating the communication controller. Since the output voltage of the series regulator stabilizes in a shorter time than the switching regulator, it becomes possible to keep the time from when RF power rises to when initial communication becomes possible, within standards.

Abstract: A back-side illuminated solid-state imaging device includes a photodiode and MOS transistors at a semiconductor substrate. The MOS transistors are formed over the front surface of the semiconductor substrate. The photodiode responds to an incident light applied to the back surface opposite to the front surface of the semiconductor substrate. A charge storing portion, and a first and second transfer gates are formed over the main part of the photodiode and the front surface of the semiconductor substrate located above the vicinity of the main part so as to achieve the global shutter function. Since the irradiation light is incident on the photodiode from the back surface of the semiconductor substrate in back-side illuminated solid-state imaging device, the sensitivity of the photodiode is not reduced even when the first and second transfer gates, and the charge storing portion are formed to achieve the global shutter function.

Abstract: In an IC tag, when a semiconductor integrated circuit device is activated, an operation control unit sets existence/nonexistence of a communication distance limitation for reducing a communication distance to a state management unit. If the communication distance limitation is not set, a switch unit is turned ON and a demodulated command is inputted from a command demodulation circuit to a command decode unit. If the communication distance limitation is set, a power intensity monitor unit judges whether the power of a rectification circuit is greater than or equal to a predetermined arbitrary field intensity. If the power is less than the predetermined arbitrary field intensity, the switch unit is turned OFF and various commands demodulated by the command demodulation circuit are not inputted to the command decode unit. As a result, the semiconductor integrated circuit device does not operate.

Abstract: In an IC tag, when a semiconductor integrated circuit device is activated, an operation control unit sets existence/nonexistence of a communication distance limitation for reducing a communication distance to a state management unit. If the communication distance limitation is not set, a switch unit is turned ON and a demodulated command is inputted from a command demodulation circuit to a command decode unit. If the communication distance limitation is set, a power intensity monitor unit judges whether the power of a rectification circuit is a predetermined arbitrary field intensity or more. If the power is smaller than the predetermined arbitrary field intensity, the switch unit is turned OFF and various commands demodulated by the command demodulation circuit are not inputted to the command decode unit. As a result, the semiconductor integrated circuit device does not operate.

Abstract: In a PLL circuit, the number of LPFs is reduced to one to reduce mounting area and pin number, and to simplify design. In one embodiment, the PLL circuit includes a variable-gain phase comparator, a mixer, an LPF, VCOs, couplers, and a control circuit to controlling the on/off operation of the VCOs. The variable-gain phase comparator is capable of varying a phase difference gain. The on/off of the operation of the VCOs is controlled by the control circuit so that one of the VCOs is turned off. The phase difference conversion gain is varied in accordance with the sensitivity of the VCOs so the number of LPFs required for the PLL circuit can be reduced to only one.

Abstract: A technique that can reduce a size of a circuit in a radio receiver device such as a reader-writer device of RFID is provided. In a semiconductor integrated circuit device (IC) used for a transceiver such as a reader-writer in a UHF band electronic tag system, an operating unit including a multiplier, an adder, and a register is disposed between a baseband signal generating unit and a DAC unit. By this structure, an ASK modulation depth and a DC bias of an ASK modulation signal can be adjusted with a simple configuration.