Radio Communication System, Radio Communication Apparatus and Radio Communication Method as Well as Computer Program

• US 20080298808A1
• Filed: 05/16/2005
• Published: 12/04/2008
• Est. Priority Date: 06/28/2004
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Fukuda, Kunio
• Granted Patent: US 7,949,258 B2
• Time in Patent Office: Days
• US Class Current: 398/106
• CPC Class Codes: G08C 2201/40 Remote control systems using repeaters, converters, gateways
• CPC Class Codes: G08C 23/04 using light waves, e.g. infrared
• CPC Class Codes: H04B 1/59 Responders; Transponders
• CPC Class Codes: H04B 10/1149 Arrangements for indoor wireless networking of information
• CPC Class Codes: H04L 12/2803 Home automation networks
• CPC Class Codes: H04L 12/282 based on user interaction within the home receiver circuitry for displaying additional information being controlled by a remote control apparatus H04N21/42204
• CPC Class Codes: H04L 2012/2841 Wireless

Abstract

It is possible to realize remote control in a reflection wave transmission system, and enhance operability for a mobile apparatus having a reflector. The mobile apparatus comprises a reflector and performs reflection wave transmission by carrying data on a reflection wave for unmodulated carrier. A reflection wave reader comprises an infrared light receiving section, receives and decodes a request signal sent as an infrared remote control command, transmits it to the mobile apparatus by an ASK modulated signal and then transmits the unmodulated carrier. The mobile apparatus transmits requested data by reflection wave. The mobile apparatus can be operated from an infrared remote controller and remote control distance can be extended.

Claims

1. A radio communication system characterized in that reflected wave transmission is performed by transmission of a carrier from a reflected wave reader side and modulation of a reflected wave with transmission data on a reflector side, wherein

said reflected wave reader includes an infrared reception section configured to receive an infrared command and an infrared command decoding section configured to decode the infrared command and controls a reflected wave transmission action in response to the infrared command.

2. The radio communication system according to claim 1, wherein

said reflected wave reader modulates the carrier with the substance of the infrared command and transmits the modulated carrier to said reflector.

3. The radio communication system according to claim 2, wherein

said reflector places the requested data on the reflected wave of the carrier from said reflected wave reader in accordance with the instruction of the infrared command received through said reflected wave reader and transmits the requested data together with the reflected wave.

4. The radio communication system according to claim 3, wherein

said reflected wave reader provides data received from said reflector to an external apparatus.

5. A radio communication apparatus which performs reflected wave communication making use of modulation of a reflected wave, from a reflector, of a carrier, comprising:

a transmission section configured to transmit the carrier;

a reception section configured to perform a reception process of the reflected wave, from said reflector, of the transmitted carrier;

an infrared reception section configured to receive an infrared command;

an infrared command decoding section configured to decode the infrared command; and

a communication control section configured to control a reflected wave transmission action in response to the infrared command.

6. The radio communication apparatus according to claim 5, wherein

said communication control section modulates the carrier with a data request requested by the infrared command and transmits the modulated carrier to said reflector.

7. The radio communication apparatus according to claim 6, wherein

said communication control section receives the data requested by the infrared command through reflected wave transmission from said reflector.

8. The radio communication apparatus according to claim 7, further comprising:

an external apparatus connection section configured to connect an external apparatus which utilizes data; and

wherein

said communication control section provides the data received from said reflector by the reflected wave transmission to the external apparatus.

9. A radio communication method for performing reflected wave communication making use of modulation of a reflected wave, from a reflector, of a carrier, comprising:

an infrared reception step of receiving an infrared command;

an infrared command decoding step of decoding the infrared command; and

a reflected wave transmission step of performing a transmission action of the reflected wave or data to said reflector and a reception action of the reflected wave from said reflector in response to the infrared command.

10. The radio communication method according to claim 9, wherein,

at the reflected wave transmission steps, a data request requested by the infrared command is transmitted to said reflector.

11. The radio communication method according to claim 10, wherein,

at the reflected wave transmission step, the data requested by the infrared command is received by reflected wave transmission from said reflector.

12. The radio communication method according to claim 12, further comprising:

a data providing step of providing the data received from said reflector by the reflected wave transmission to an external apparatus.

13. A computer program described in a computer-readable form so that a process for performing reflected wave communication making use of modulation of a reflected wave, from a reflector, of a carrier is executed on a computer system, comprising:

an infrared reception step of receiving an infrared command;

an infrared command decoding step of decoding the infrared command; and

a reflected wave transmission step of performing a transmission action of the reflected wave or data to said reflector and a reception action of the reflected wave from said reflector in response to the infrared command.