BATTERY-FREE REMOTE CONTROL DEVICE

• US 20080316081A1
• Filed: 06/21/2007
• Published: 12/25/2008
• Est. Priority Date: 06/21/2007
• Status: Active Application

• Current Assignee: FAVEPC, Inc.
• Original Assignee: FAVEPC, Inc.
• Inventors: CHEN, YUNG HUA, CHANG, SHAO CHANG, CHEN, YA-PING
• Application Number:
  US11/766,738
• Publication Number:
  US 20080316081A1
• Time in Patent Office: Days
• US Class Current: 341/176
• CPC Class Codes: G08C 17/02 using a radio link

Abstract

A control device capable of controlling an electronic device via wireless communications, the control device comprising a first antenna capable of receiving a radio frequency (RF) carrier at a first frequency, a power generation circuit capable of converting RF power of the RF carrier into direct-current (DC) power, a plurality of input devices configured to allow adjustment of a number of settings of the electronic device, each of the input devices being related to one of the number of settings, a memory device configured to store a number of codes, each of the number of codes being related to one of the number of settings, a control unit configured to receive the DC power and capable of retrieving one of the number of codes in the memory device based on a selection of at least one of the input devices, and a modulator capable of modulating the one code at the first frequency.

Claims

1. A control device capable of controlling an electronic device via wireless communications, the control device comprising:

a first antenna capable of receiving a radio frequency (RF) carrier at a first frequency;

a power generation circuit capable of converting RF power of the RF carrier into direct-current (DC) power;

a plurality of input devices configured to allow adjustment of a number of settings of the electronic device, each of the input devices being related to one of the number of settings;

a memory device configured to store a number of codes, each of the number of codes being related to one of the number of settings;

a control unit configured to receive the DC power and capable of retrieving one of the number of codes in the memory device based on a selection of at least one of the input devices; and

a modulator capable of modulating the one code at the first frequency.

2. The device of claim 1, wherein the power generation circuit includes a charge pump.

3. The device of claim 1, wherein the power generation circuit includes an alternating-current (AC) to DC converter and a voltage multiplier coupled to the AC to DC converter.

4. The device of claim 1, wherein the modulator transmits a modulated signal via the first antenna.

5. The device of claim 4, wherein the electronic device includes a second antenna configured to receive the modulated signal from the first antenna.

6. The device of claim 5, wherein the electronic device includes a demodulator capable of demodulating the modulated signal.

7. The device of claim 5, wherein the electronic device includes a transmitter capable of transmitting the RF carrier via the second antenna.

8. A control device capable of controlling an electronic device via wireless communications, the control device comprising:

a first antenna capable of receiving a carrier at a first frequency, the carrier having a first voltage level;

a power generation circuit capable of providing a power supply with a second voltage level based on the carrier, the second voltage level being greater than the first voltage level;

a number of input devices configured to allow adjustment of a number of settings of the electronic device, each of the number of input devices being related to one of the number of settings;

a memory device configured to store a number of codes, each of the number of codes being related to one of the number of settings;

a control unit configured to receive the power supply and capable of retrieving one of the number of codes in the memory device based on a selection of at least one of the input devices; and

a modulator capable of modulating the one code at the first frequency.

9. The device of claim 8, wherein the first antenna is capable of detecting the first frequency at one of an ultra high frequency (UHF) band and a microwave band.

10. The device of claim 8, wherein the power generation circuit includes a charge pump.

11. The device of claim 8, wherein the power generation circuit includes an alternating-current (AC) to DC converter and a voltage multiplier coupled to the AC to DC converter.

12. The device of claim 8, wherein the modulator transmits a modulated signal via the first antenna.

13. The device of claim 12, wherein the electronic device includes a second antenna configured to receive the modulated signal from the first antenna.

14. The device of claim 13, wherein the electronic device includes a demodulator capable of demodulating the modulated signal.

15. The device of claim 13, wherein the electronic device includes a transmitter capable of transmitting the carrier via the second antenna.

16. A control device capable of controlling an electronic device via wireless communications, the control device comprising:

a first antenna capable of receiving a carrier at a first frequency;

a power generation circuit capable of providing a power supply based on the carrier;

a number of input devices corresponding to a number of settings of the electronic device;

a memory device configured to store a number of codes, each of the number of codes being related to one of the number of settings;

a control unit coupled to the power generation circuit, the control unit being capable of retrieving one of the number of codes in the memory device based on a selection of at least one of the input devices; and

a modulator capable of modulating the one code at the first frequency.

17. The device of claim 16, wherein the power generation circuit includes a charge pump.

18. The device of claim 16, wherein the electronic device includes a second antenna configured to receive a modulated signal from the first antenna.

19. The device of claim 18, wherein the electronic device includes a demodulator capable of demodulating the modulated signal.

20. The device of claim 19, wherein the electronic device includes a transmitter capable of transmitting the carrier via the second antenna.