System and method for wireless communication of uncompressed video having connection control protocol

• US 8,630,312 B2
• Filed: 10/09/2007
• Issued: 01/14/2014
• Est. Priority Date: 12/04/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Shao, Huai-Rong, Singh, Harkirat, Qin, Xiangping, Ngo, Chiu
• Primary Examiner(s): Mesfin, Yemane
• Assistant Examiner(s): HUYNH, KHOA B
• Application Number:
  US11/869,636
• Publication Number:
  US 20080129879A1
• Time in Patent Office: 2,289 Days
• Field of Search: None
• US Class Current: 370/476
• CPC Class Codes: H04L 65/613 for the control of the source by the destination control signals issued by the client directed to the server or network components specially adapted for selective content distribution H04N21/637
• CPC Class Codes: H04L 65/752 adapting media to network capabilities
• CPC Class Codes: H04L 65/756 adapting media to device capabilities
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• 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 21/632 using a connection between clients on a wide area network, e.g. setting up a peer-to-peer communication via Internet for retrieving video segments from the hard-disk of other client devices broadcast-related systems characterised by transmission among terminal devices H04H60/80; distributed application using peer-to-peer [P2P] networks H04L67/104
• CPC Class Codes: H04N 21/643 Communication protocols network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP], H04L65/65

Abstract

A system and method for wireless communication of uncompressed audiovisual data are disclosed. The system includes a first device and a second device wirelessly connectable to each other. The first device transmits a connection control information request from the first device to the second device, wherein the connection control information request includes a request for connection control information of the second device. The connection control information includes at least one of association information, wireless video area network (WVAN) information, device capability information, audio video (A/V) format capability information, bandwidth information, A/V stream start, stop or pause command information, and device control information. The request further includes connection control information of the first device. The second device is configured to transmit a connection control information response from the second device to the first device. The connection control information response includes the connection control information of the second device.

Claims

1. A method of wireless communication of uncompressed audiovisual data, the method comprising:

transmitting at least one connection control information request from a first device to a second device in a wireless communication network before transmission of audio video (A/V) data between the first device to the second device, wherein the connection control information request comprises connection control information of the first device, and wherein the connection control information comprises a frame for device capability information and a frame for A/V format capability information, wherein the device capability information comprises one or more of device category information and wireless type information, wherein the wireless type information comprises wireless high rate channel information comprising fields for wireless capability for one or more of receiver device support and transmitter device support;

transmitting at least one connection control information response from the second device to the first device; and

transmitting uncompressed audiovisual data to or from one of the first and second devices.

2. The method of claim 1, wherein the first device is a non-coordinator device, and wherein the second device is a coordinator.

3. The method of claim 2, further comprising generating the connection control information response at the second device, and wherein transmitting the uncompressed audiovisual data comprises transmitting the audiovisual data between the first and second devices.

4. The method of claim 2, further comprising storing the connection control information of the first device at the second device.

5. The method of claim 4, wherein the wireless communication network further comprises a third device which is a non-coordinator device, and wherein the method further comprises transmitting the stored connection control information of the first device to the third device.

6. The method of claim 2, wherein the wireless communication network further comprises a third device which is a non-coordinator device, and wherein transmitting the uncompressed audiovisual data comprises transmitting the audiovisual data between the first and third devices.

7. The method of claim 6, further comprising generating the connection control information response at the second device.

8. The method of claim 6, further comprising:

transmitting the connection control information request from the second device to the third device;

generating the connection control information response at the third device; and

transmitting the connection control information response from the third device to the second device.

9. The method of claim 8, wherein the first device is a sink and wherein the third device is a source.

10. The method of claim 1, wherein the first device is a coordinator, wherein the second device is a non-coordinator device, and wherein transmitting the uncompressed audiovisual data comprises transmitting the audiovisual data between the first and second devices.

11. The method of claim 1, wherein the device capability information comprises subunit information including a number of subunits associated with the device.

12. The method of claim 11, wherein the subunit information further comprises device function filtering information.

13. The method of claim 1, wherein A/V formats to be used by the first device and the second device are negotiated before a connection begins between the first device and the second device.

14. The method of claim 1, wherein the connection control information further comprises association information, wireless video area network (WVAN) information, bandwidth information, A/V stream start, stop or pause command information, and device control information.

15. The method of claim 1, wherein the frame for device capability information comprises a wireless video area network (WVAN) information request command frame.

16. The method of claim 15, wherein the frame for A/V format capability comprises an A/V format capability request command frame.

17. The method of claim 16, wherein the frame for A/V format capability information includes fields for A/V format type, A/V format size and A/V source format capability data.

18. The method of claim 1, wherein the device capability information further comprises device subunit type information.

19. The method of claim 1, wherein the frame for device capability information comprises a device name.

20. The method of claim 1, further comprising:

transmitting at least one connection control information response from the second device to the first device in the wireless communication network, wherein the connection control information response comprises a frame including a plurality of device capability information fields for each of a plurality of devices.

21. The method of claim 20, wherein each of the plurality of device capability information fields comprise one or more of a length field, a device identification field, a version field, a wireless type field, a function filter field, and a subunit number field.

22. The method of claim 1, wherein the fields for wireless capability comprise fields for high rate wireless channel receiver support, high rate wireless channel transmitter support, and high rate wireless channel transceiver support.

23. The method of claim 1, wherein the wireless high rate channel information comprises a field for no high rate wireless channel support.

24. The method of claim 1, wherein the wireless type information comprises type of high rate physical (PHY) layer supported.

25. The method of claim 24, wherein the type of high rate PHY layer supported comprises device support by a high rate receiver, a high rate transmitter or a high rate transceiver.

26. A method of wireless communication of uncompressed audiovisual data, the method comprising:

determining whether an originator needs to acquire device format capability information of a destination device directly from the destination device, wherein the format capability information comprises a frame including A/V source format capability that the destination device can support;

exchanging a connection control information request and a connection control information response between the originator and the destination device, wherein the device capability information comprises one or more of device category information and wireless type information, wherein the wireless type information comprises wireless high rate channel information comprising fields for wireless capability for one or more of receiver device support and transmitter device support;

exchanging a format capability information request and a format capability information response between the originator and the destination device if the originator needs to acquire the format capability information of the destination device directly from the destination device;

exchanging a connection start request and a connection start response between the originator and the destination device; and

transmitting audiovisual data between the originator and the destination device.

27. The method of claim 26, wherein exchanging the format capability information request and the format capability information response comprises:

transmitting the format capability information request from the originator to the destination device; and

transmitting the format capability information response from the destination device to the originator in response to the format capability information request.

28. The method of claim 26, wherein exchanging the connection start request and the connection start response comprises:

transmitting the connection start request from the originator to the destination device; and

transmitting the connection start response from the destination device to the originator in response to the connection start request.

29. The method of claim 28, further comprising reserving a bandwidth for transmitting the audiovisual data after exchanging the format capability information request and the format capability information response and before transmitting the connection start response.

30. The method of claim 26, wherein one of the originator and the destination device is a coordinator and the other of the originator and the destination device is a non-coordinator device.

31. The method of claim 26, wherein each of the originator and the destination device is a non-coordinator device.

32. The method of claim 26, wherein the connection start request does not include format capability information, and wherein the connection start response does not include format capability information.

33. The method of claim 26, wherein A/V formats to be used by the originator and the destination device are negotiated before a connection begins between the originator and the destination device.

34. The method of claim 26, wherein the format capability information comprises Enhanced Extended Display Identification (E-EDID) information.

35. A wireless system for wireless communication of uncompressed audiovisual data, the system comprising:

a transmitter transmitting that transmits at least one connection control information request to a device in a wireless communication network before transmission of audio video (A/V) data between the transmitter to the device, wherein the connection control information request comprises connection control information of the first device, and wherein the connection control information comprises a frame for device capability information and a frame for A/V format capability information, wherein the device capability information comprises one or more of device category information and wireless type information, wherein the wireless type information comprises wireless high rate channel information comprising fields for wireless capability for one or more of receiver device support and transmitter device support;

wherein the device transmits at least one connection control information response to the transmitter, and

wherein the transmitter transmits uncompressed audiovisual data to the device.

36. A wireless system for wireless communication of uncompressed audiovisual data, the system comprising:

a receiver that receives at least one connection control information request from a device in a wireless communication network before transmission of audio video (A/V) data between the device to the receiver, wherein the connection control information request comprises connection control information of the first device, and wherein the connection control information comprises a frame for device capability information and a frame for A/V format capability information, wherein the device capability information comprises one or more of device category information and wireless type information, wherein the wireless type information comprises wireless high rate channel information comprising fields for wireless capability for one or more of receiver device high rate channel support and transmitter device high rate channel support;

wherein the receiver communicates a connection control information response to the device, and

wherein the receiver receives uncompressed audiovisual data from the device.