Transmission device, reception device, and communication system

Patent metadata

Field	Value
Publication number	US-9419688-B2
Application number	US-201113576334-A
Country	US
Kind code	B2
Filing date	Aug 15, 2011
Priority date	Aug 24, 2010
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

Provided is a transmission device including a terminal connected electrically to a terminal of another device, and a transmission unit configured to transmit information through the terminal by performing load modulation according to contact between the terminal and the terminal of the other device.

First claim

The invention claimed is:

1. A transmission device comprising:
a terminal of the transmission device configured to be electrically connected to a terminal of an electronic device via a power line; and
a transmission unit that transmits information through the power line to the electronic device when the terminal of the transmission device is electrically connected to the terminal of the electronic device,
wherein the transmission unit receives power from a high frequency signal transmitted from the electronic device via the power line and performs load modulation on the high frequency signal to communicate with the electronic device when the transmission device is electrically connected with the electronic device.

2. The transmission device according to claim 1 , wherein the transmission unit is configured to transmit the information regardless of whether a signal indicating an instruction of a user is input after the contact is made between the terminal of the transmission device and the terminal of the electronic device.

3. The transmission device according to claim 1 , further comprising a drive unit configured to drive by receiving a direct current or an alternating current having a frequency lower than the high frequency signal, wherein the drive unit is configured to receive the direct current or the alternating current according to a result of an authentication process executed in the electronic device by using the information.

4. The transmission device according to claim 1 , wherein the high frequency signal is a frequency used in Radio Frequency IDentification (RFID).

5. The transmission device according to claim 4 , wherein the high frequency includes a frequency used in contactless communication.

6. The transmission device according to claim 4 , wherein the high frequency includes at least one of 130 to 135 kHz, 13.56 MHz, 56 MHz, 433 MHz, 954.2 MHz, 954.8 MHz, 2441.75 MHz, or 2448.875 MHz.

7. The transmission device according to claim 3 , further comprising a filter configured to pass the high frequency signal and block the direct current or the alternating current.

8. The transmission device according to claim 1 , wherein the transmission device includes at least two terminals, and the electronic device includes at least two terminals.

9. The transmission device according to claim 1 , wherein the terminal of the transmission device is provided at a plug, and the terminal of the electronic device is provided at an outlet.

10. The transmission device according to claim 1 , further comprising a display unit configured to display at least one of an image and a character.

11. The transmission device according to claim 1 , wherein the transmission device is a vehicle that charges a built-in battery by receiving power supply, and rotates a wheel using power of the built-in battery.

12. A reception device comprising:
to a terminal of the reception device configured to be electrically connected to a terminal of a transmission device via a power line;
a high frequency signal output unit configured to output a high frequency signal via the power line to the transmission device; and
a reception unit configured to receive information transmitted from the transmission device via the power line when the terminal of the transmission device and the terminal of the reception device are in contact with each other,
wherein the reception unit receives the information based on load modulation of the high frequency signal when the reception device is electrically connected with the transmission device.

13. The reception device according to claim 12 , wherein the high frequency signal is output when the contact between the terminal of the transmission device and the terminal of the reception device is detected.

14. The reception device according to claim 12 , wherein the high frequency signal output unit is configured to output the high frequency signal repeatedly.

15. The reception device according to claim 12 , wherein the high frequency signal output unit is configured to superimpose the high frequency signal, which is higher than a direct current or an alternating current flowing through the power line, on the direct current or the alternating current.

16. The reception device according to claim 12 , wherein the high frequency signal is a frequency used in Radio Frequency IDentification (RFID).

17. The reception device according to claim 12 , wherein the high frequency includes a frequency used in contactless communication.

18. The reception device according to claim 12 , wherein the high frequency includes at least one of 130 to 135 kHz, 13.56 MHz, 56 MHz, 433 MHz, 954.2 MHz, 954.8 MHz, 2441.75 MHz, or 2448.875 MHz.

19. The reception device according to claim 12 , further comprising a filter configured to pass the high frequency signal and block an alternating current.

20. The reception device according to claim 12 , wherein the terminal of the transmission device is provided at a plug, and the terminal of the reception device is provided at an outlet.

21. The reception device according to claim 12 , wherein the transmission device includes at least two terminals, and the reception device includes at least two terminals.

22. The reception device according to claim 12 , wherein the transmission device is identified based on the information transmitted from the transmission device by the load modulation.

23. The reception device according to claim 12 , further comprising a display unit configured to display at least one of an image and a character.

24. The reception device according to claim 12 , wherein the reception device is a vehicle.

25. A communication system comprising:
a transmission device; and
a reception device,
wherein the transmission device includes
a terminal of the transmission device configured to be electrically connected to a terminal of the reception device via a power line, and
a transmission unit that transmits information through the power line to the reception device when the terminal of the transmission device is electrically connected to the terminal of the reception device,
wherein the reception device includes
the terminal of the reception device,
a high frequency signal output unit configured to output a high frequency signal via the power line to the transmission device, and
a reception unit configured to receive the information transmitted from the transmission device via the power line when the terminal of the transmission device and the terminal of the reception device are in contact with each other, and
wherein the transmission device receives power from the high frequency signal transmitted from the reception device via the power line and perform load modulation on the high frequency signal to communicate with the reception device, and the reception device receives the information based on load modulation of the high frequency signal when the transmission device is electrically connected with the reception device.

Assignees

• Washiro Takanori
• Sony Corp

Inventors

• Washiro Takanori

Classifications

• H04B2203/5416

  by adding signals to the wave form of the power source · CPC title

• H04B3/54 Primary

  Systems for transmission via power distribution lines · CPC title

• H04B5/0081 Primary

  Electricity · mapped topic

• H04B2203/5441

  Wireless systems or telephone · CPC title

• H04B5/26 Primary

  using coils · CPC title