DEVICE, METHOD AND SYSTEM OF SWITCHING BETWEEN FREQUENCY CHANNELS IN WIRELESS COMMUNICATION

• US 20090125964A1
• Filed: 08/14/2008
• Published: 05/14/2009
• Est. Priority Date: 08/15/2007
• Status: Abandoned Application

• Current Assignee: Amimon Limited (Vitec Group PLC)
• Original Assignee: Amimon Limited (Vitec Group PLC)
• Inventors: Freundlich, Shay, Feder, Meir, Goldberg, Netanel
• Application Number:
  US12/191,512
• Publication Number:
  US 20090125964A1
• Time in Patent Office: Days
• US Class Current: 725/118
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• CPC Class Codes: H04N 21/43615 Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals home Audio Video Interoperability [HAVI] data switching networks H04L12/2805
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 21/4367 Establishing a secure communication between the client and a peripheral device or smart card
• CPC Class Codes: H04N 7/1675 Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58

Abstract

Some demonstrative embodiments include devices, systems and/or methods of wireless communication. A method of switching between frequency channels of communication between wireless video communication modules may include, for example, transmitting over a first frequency channel at least one wireless video frame from a first wireless video communication module to a second wireless video communication module, wherein the video frame includes an indication of a second frequency channel to be used for communication between the first and second modules and an indication of a time at which the first and second modules are to switch to the second transmission channel. Other embodiments are described and claimed.

Claims

1. A method of switching between frequency channels of communication between wireless video communication modules, the method comprising:

transmitting over a first frequency channel at least one wireless video frame from a first wireless video communication module to a second wireless video communication module, wherein said video frame comprises an indication of a second frequency channel to be used for communication between said first and second modules and an indication of a time at which said first and second modules are to switch to the second transmission channel.

2. The method of claim 1, wherein transmitting said at least one video frame comprises transmitting a sequence of video frames, and wherein each of said sequence of frames comprises the indication of said second frequency channel and an indication of a remaining number of frames of said sequence to be transmitted.

3. The method of claim 1, wherein a header of said video frame includes at least one of the indication of said second frequency channel, and the indication of the time at which said first and second modules are to switch to the second transmission channel.

4. The method of claim 1 comprising switching said first module to transmit over said second frequency channel.

5. The method of claim 4, wherein switching said first module comprises switching said first module in synchronization with a timing of said at least one video frame.

6. The method of claim 5, wherein switching said first module comprises switching said first module during a blanking interval associated with said at least one video frame.

7. The method of claim 1 comprising:

searching for one or more free frequency channels; and

selecting said second frequency channel from said one or more free frequency channels.

8. The method of claim 7, wherein said searching comprises:

switching to a predefined frequency channel of a predefined set of frequency channels;

determining whether said predefined frequency channel is free; and

switching back to said first frequency channel.

9. The method of claim 7, wherein said searching comprises searching during a blanking interval associated with said at least one video frame.

10. The method of claim 1, wherein said wireless video frame comprises video data.

11. The method of claim 1, wherein said first wireless video module comprises a wireless video source module, and wherein said second wireless video module comprises a wireless video destination module.

12. The method of claim 11, wherein said video source module comprises at least one of a set-top-box, a digital-versatile-disc, a digital-video-recorder, a game console, a personal computer, a portable computer, a personal-digital-assistant, a video-cassette-recorder, a video camera, a cellular phone, a video player, an MP-4 player, and a video dongle.

13. The method of claim 11, wherein said video destination module comprises at least one of a display, a television, a projector, a monitor, an audio/video receiver, and a video dongle.

14. An apparatus comprising:

a wireless video communication module capable of transmitting to another wireless video communication module at least one wireless video frame over a first frequency channel, wherein said video frame comprises an indication of a second frequency channel to be used for communication between said first and second modules and an indication of a time at which said first and second modules are to switch to the second transmission channel.

15. The apparatus of claim 14, wherein said wireless video communication module is capable of transmitting a sequence of video frames, and wherein each of said sequence of frames comprises the indication of said second frequency channel and an indication of a remaining number of frames of said sequence to be transmitted.

16. The apparatus of claim 14, wherein a header of said video frame includes at least one of the indication of said second frequency channel, and the indication of the time at which said first and second modules are to switch to the second transmission channel.

17. The apparatus of claim 14, wherein said wireless video communication module is capable of switching to transmit over said second frequency channel.

18. The apparatus of claim 17, wherein said wireless video communication module is capable of switching to transmit over said second frequency channel during a blanking interval associated with said at least one video frame.

19. The apparatus of claim 14, wherein said wireless video communication module is capable of searching for one or more free frequency channels;

and selecting said second frequency channel from said one or more free frequency channels.

20. The apparatus of claim 19, wherein said wireless video communication module is capable of switching to a predefined frequency channel of a predefined set of frequency channels;

determining whether said predefined frequency channel is free; and

switching back to said first frequency channel.

21. The apparatus of claim 19, wherein said wireless video communication module is capable of performing said searching during a blanking interval associated with said at least one video frame.

22. The apparatus of claim 14, wherein said wireless video frame comprises video data.

23. The apparatus of claim 14, wherein said wireless video communication module comprises a video source selected from the group consisting of a set-top-box, a digital-versatile-disc, a digital-video-recorder, a game console, a personal computer, a portable computer, a personal-digital-assistant, a video-cassette-recorder, a video camera, a cellular phone, a video player, an MP-4 player, and a video dongle.

24. A system comprising:

at least first and second wireless video communication modules,

wherein said first module is capable of transmitting to said second module at least one wireless video frame over a first frequency channel, and wherein said video frame comprises an indication of a second frequency channel to be used for communication between said first and second modules and an indication of a time at which said first and second modules are to switch to the second transmission channel.

25. The system of claim 24, wherein said first module is capable of transmitting a sequence of video frames, and wherein each of said sequence of frames comprises the indication of said second frequency channel and an indication of a remaining number of frames of said sequence to be transmitted.

26. The system of claim 24, wherein a header of said video frame includes at least one of the indication of said second frequency channel, and the indication of the time at which said first and second modules are to switch to the second transmission channel.

27. The system of claim 24, wherein said first module is capable of searching for one or more free frequency channels;

and selecting said second frequency channel from said one or more free frequency channels.

28. The system of claim 27, wherein said first module is capable of switching to a predefined frequency channel of a predefined set of frequency channels;

determining whether said predefined frequency channel is free; and

switching back to said first frequency channel.

29. The system of claim 28, wherein said first module is capable of performing said searching during a blanking interval associated with said at least one video frame.