Switch device and power supply control system

• US 8,125,107 B2
• Filed: 05/04/2011
• Issued: 02/28/2012
• Est. Priority Date: 12/27/2006
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Fukutome, Takahiro
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): AMAYA, CARLOS DAVID
• Application Number:
  US13/100,916
• Publication Number:
  US 20110210623A1
• Time in Patent Office: 300 Days
• Field of Search: 307/112, 307/126, 307/129
• US Class Current: 307/112
• CPC Class Codes: H01H 63/36 Circuit arrangements for ensuring correct or desired operation and not adapted to a particular application of the selector switch
• CPC Class Codes: H02B 1/24 Circuit arrangements for boards or switchyards
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H04B 1/0003 Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain digital baseband systems H04L25/00; digital modulation/demodulation H04L27/00; CDMA H04B1/707; TDMA H04B7/2643; image transmission H04N5/00
• CPC Class Codes: H04L 12/10 Current supply arrangements
• CPC Class Codes: H04M 1/73 Battery saving arrangements
• CPC Class Codes: H04W 52/0225 using monitoring of external events, e.g. the presence of a signal
• CPC Class Codes: H04W 52/0251 using monitoring of local events, e.g. events related to user activity
• CPC Class Codes: H04W 52/0254 detecting a user operation or a tactile contact or a motion of the device
• CPC Class Codes: H04W 52/0261 managing power supply demand, e.g. depending on battery level
• CPC Class Codes: H04W 52/0274 by switching on or off the equipment or parts thereof
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y04S 20/20 End-user application control systems

Abstract

The switch device includes a control switch that turns on/off an electrical connection between an apparatus and the power supply, a condition judging circuit that judges conditions of driving the control switch, an electric wave reception circuit that receives an electric wave, and a power supply circuit that generates power from the electric wave received by the electric wave reception circuit. An electric wave transmission device that transmits an electric wave for making the switch device operate is arranged in a space, whereby the electric wave can be received by the electric wave reception device in the specific space. The switch device controls the control switch to be turned off/on when the electric wave is received. Alternatively, when the electric wave is not received, the switch device turns on/off the control switch.

Claims

1. An electronic device comprising:

an electric wave reception circuit to receive an electric wave;

a power supply circuit to generate a power from the electric wave that is received by the electric wave reception circuit;

a power supply, wherein the power supply is configured to be charged with at least a part of the power generated by the power supply circuit,

a judgement circuit;

a switch; and

a sensor circuit,

wherein the power is supplied to the judgement circuit from the power supply circuit or the power supply,

wherein the judgement circuit is configured to output a signal that controls on/off of the switch, and

wherein the sensor circuit is operationally connected to the judgement circuit.

2. The electronic device according to claim 1, wherein the power supply is a condenser or a battery.

3. An electronic device comprising:

an electric wave reception circuit to receive an electric wave;

a power supply circuit to generate a first power from the electric wave that is received by the electric wave reception circuit;

a power supply, wherein the power supply is configured to be charged with at least a part of the first power generated by the power supply circuit,

a judgement circuit;

a circuit; and

a sensor circuit,

wherein the first power is supplied to the judgement circuit from the power supply circuit or the power supply, and

wherein the judgement circuit is configured to output a signal that controls a supply of a second power to the circuit,

wherein the sensor circuit is operationally connected to the judgement circuit.

4. The electronic device according to claim 3 further comprising a hand-operated switch that controls the supply of the second power to the circuit by hand.

5. The electronic device according to claim 3, wherein the power supply is a condenser or a battery.

6. An electronic device comprising:

an electric wave reception circuit to receive an electric wave;

a power supply circuit to generate a first power from the electric wave that is received by the electric wave reception circuit;

a first power supply, wherein the first power supply is configured to be charged with at least a part of the first power generated by the power supply circuit,

a judgement circuit;

a circuit which controls a supply of a second power from a second power supply; and

a sensor circuit,

wherein the judgement circuit is configured to output a signal to the circuit that controls the supply of the second power to the electronic device, and

wherein the sensor circuit is operationally connected to the judgement circuit.

7. The electronic device according to claim 6, wherein the first power supply is a condenser or a battery.