Wireless Communication System

• US 20100081466A1
• Filed: 08/28/2009
• Published: 04/01/2010
• Est. Priority Date: 09/05/2008
• Status: Abandoned Application

• Current Assignee: Sony Interactive Entertainment Europe Limited (Sony Group Corp.)
• Original Assignee: Sony Computer Entertainment Incorporated (Sony Group Corp.)
• Inventors: Mao, Xiaodong
• Application Number:
  US12/549,688
• Publication Number:
  US 20100081466A1
• Time in Patent Office: Days
• US Class Current: 455/500
• CPC Class Codes: G10H 1/361 Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems
• CPC Class Codes: G10H 2240/211 Wireless transmission, e.g. of music parameters or control data by radio, infrared or ultrasound beam G10H2220/405
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04R 1/04 Structural association of microphone with electric circuitry therefor in deaf-aid sets H04R25/00
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones

Abstract

A wireless communication system operating within a predetermined frequency band comprises a wireless data receiving device; and two or more wireless data originating devices each having a respective unique identifier which is transmitted to the wireless data receiving device from time to time; in which: the wireless data originating devices are arranged to communicate with the wireless data receiving device on frequency channels selected from respective different subsets of the predetermined frequency band.

Claims

1. A wireless communication system operating within a predetermined frequency band, said system comprising:

a wireless data receiving device; and

two or more wireless data originating devices each having a respective unique identifier which is transmitted to said wireless data receiving device from time to time;

in which;

said wireless data originating devices are arranged to communicate with said wireless data receiving device on frequency channels selected from respective different subsets of said predetermined frequency band.

2. A system according to claim 1, in which said wireless data originating devices comprise substantially identical data source devices.

3. A system according to claim 2, in which said data source devices are audio transducers.

4. A system according to claim 1, in which said subsets of said predetermined frequency band are non-overlapping.

5. A system according to claim 1, in which each of said wireless data originating devices is a member of one of two or more classes of devices, each class having an associated respective different subset of said predetermined frequency band.

6. A system according to claim 5, in which said class of a wireless data originating device is predetermined at manufacture.

7. A system according to claim 5, in which each wireless data originating device'"'"'s unique identifier includes a class identifier indicating said class of that wireless data originating device.

8. A system according to claim 7, in which, when a wireless data originating device transmits that device'"'"'s unique identifier to said wireless data receiver, said class identifier transmitted as a first portion of said transmitted unique identifier.

9. A system according to claim 5, in which said subsets of said predetermined frequency band available for use by a wireless data originating device are predetermined according to said class of that device.

10. A system according to claim 1, in which communication between said wireless data originating devices and said wireless data receiver uses a frequency-hopping arrangement in which a sequence of different carrier frequencies is used to transmit successive packets of data.

11. A system according to claim 10, in which said sequence used by a wireless data originating device is dependent, at least in part, on said unique identifier associated with that wireless data originating device.

12. A system according to claim 10, in which said sequences used by said two or more wireless data originating devices are inter-related so as to generate intermodulation products at predetermined frequencies.

13. A system according to claim 1, in which:

said unique identifiers associated with said wireless data originating devices are mutually orthogonal.

14. A system according to claim 13, in which:

said system comprises two wireless data originating devices; and

said unique identifiers associated with said two wireless data originating devices are binary complements of one another.

15. A system according to claim 1, in which said wireless data receiver comprises one radio frequency communication device for each wireless data originating device with which said wireless receiver is capable of simultaneous communication;

each radio frequency communication device being arranged to communicate data according to a respective one of said subsets of said predetermined frequency band.

16. A system according to claim 1, in which said predetermined frequency band is a frequency band between 2.4 and 2.4835 Gigahertz.

17. A set of two or more wireless data originating devices each having a respective unique identifier which is transmitted to a wireless data receiving device from time to time, said unique identifiers being mutually orthogonal.

18. A set according to claim 17, in which:

said set comprises two wireless data originating devices; and

said unique identifiers are binary complements of one another.

19. A set according to claim 17, in which said wireless data originating devices are arranged to communicate with said wireless data receiving device on frequencies selected from respective subsets of a predetermined frequency band.