Wireless video transmission system

• US 20060095942A1
• Filed: 04/21/2005
• Published: 05/04/2006
• Est. Priority Date: 10/30/2004
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: van Beek, Petrus J.L.
• Granted Patent: US 8,356,327 B2
• Time in Patent Office: Days
• US Class Current: 725/81
• CPC Class Codes: H04N 19/149 by estimating the code amount by means of a model, e.g. mathematical model or statistical model
• CPC Class Codes: H04N 19/15 by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
• CPC Class Codes: H04N 19/162 User input
• CPC Class Codes: H04N 19/164 Feedback from the receiver or from the transmission channel
• CPC Class Codes: H04N 19/166 concerning the amount of transmission errors, e.g. bit error rate [BER]
• CPC Class Codes: H04N 19/172 the region being a picture, frame or field
• CPC Class Codes: H04N 19/177 the unit being a group of pictures [GOP]
• CPC Class Codes: H04N 19/188 the unit being a video data packet, e.g. a network abstraction layer [NAL] unit
• CPC Class Codes: H04N 19/40 using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• CPC Class Codes: H04N 19/89 involving methods or arrangements for detection of transmission errors at the decoder
• CPC Class Codes: H04N 21/2343 involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements video transcoding H04N19/40; media packet handling at the source H04L65/762
• CPC Class Codes: H04N 21/23655 Statistical multiplexing, e.g. by controlling the encoder to alter its bitrate to optimize the bandwidth utilization
• CPC Class Codes: H04N 21/2402 Monitoring of the downstream path of the transmission network, e.g. bandwidth available traffic monitoring in data switching networks H04L43/00; monitoring data switching networks utilization H04L43/0876
• CPC Class Codes: H04N 21/2662 Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
• CPC Class Codes: H04N 21/44209 Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896
• CPC Class Codes: H04N 21/6377 directed to server one-way streaming services wherein the source is controlled by the destination H04L65/613

Abstract

A transmission systems suitable for video.

Claims

1. A method for transmitting video content comprising:

(a) encoding said video by a sender at a data rate;

(b) transmitting said encoded video across a network interconnection to a receiver;

(c) adjusting said data rate based upon at least one of the following;

(i) a delivery deadline of a portion of said video content at said receiver;

(ii) the amount of data in the channel between an encoder at said sender and a decoder at said receiver;

(iii) the amount of data within a buffer at an application layer at said receiver;

(iv) the amount of data within a buffer at a MAC layer at said receiver;

(v) the amount of data within a buffer at an application layer at said sender;

(vi) the amount of data within a buffer at a MAC layer at said sender;

(vii) an arrival time of said encoded video at said receiver;

(viii) a desired arrival time of said encoded video at said receiver;

(ix) a prediction of future conditions of said network interconnection;

(x) past condition of said network interconnection;

(xi) a manner of packetization of previous and current portions of coded video data;

(xii) the number of bits used for encoding previous portions of encoded video data;

(xiii) the relative importance of a portion of video;

(xiv) the tolerance to delay within the system;

(xv) accumulative effects of conditions of said network interconnection over a past period of time;

(xvi) the amount of data within a buffer at said receiver;

(xvii) the amount of data in the channel between said sender and said receiver;

(xviii) the amount of data within a buffer at the sender.

2. The method of claim 1 wherein said data rate is based upon the amount of data in said channel between said sender and said receiver data within said buffer at said sender.

3. The method of claim 1 wherein said data rate is based upon said delivery deadline of said portion of said video at said receiver.

4. The method of claim 1 wherein said data rate is based upon the amount of data within said buffer at said application layer at said receiver.

5. The method of claim 1 wherein said data rate is based upon the amount of data within said buffer at said MAC layer at said receiver.

6. The method of claim 1 wherein said data rate is based upon the amount of data within said buffer at said application layer at said sender.

7. The method of claim 1 wherein said data rate is based upon the amount of data within said buffer at said MAC layer at said sender.

8. The method of claim 1 wherein said data rate is based upon said arrival time of said data at said receiver.

9. The method of claim 1 wherein said data rate is based upon said desired arrival time of said data at said receiver.

10. The method of claim 1 wherein said data rate is based upon a prediction of future conditions of said network interconnection.

11. The method of claim 1 wherein said data rate is based upon past conditions of said network interconnection.

12. The method of claim 1 wherein said data rate is based upon a prediction of future conditions of said network interconnection based upon a change in past conditions of said network interconnection.

13. The method of claim 1 wherein said data rate is based upon past change in data conditions of said network interconnection.

14. The method of claim 1 wherein said data rate is based upon said packetization of previous and current portions of coded video data.

15. The method of claim 1 wherein said data rate is based upon the number of bits used for encodeing previous portions of said video.

16. The method of claim 1 wherein said data rate is based upon a data rate for previous portions of said video.

17. The method of claim 1 wherein said data rate is based upon a coding type for said video.

18. The method of claim 1 wherein said data rate is based upon said accumulative effects of conditions over said past period of time.

19. The method of claim 1 wherein said data rate is based upon said amount of data in the channel between said sender and said receiver data within said buffer at said receiver.

20. The method of claim 1 wherein said data rate is based upon said amount of data in the channel between said sender and said receiver.

21. The method of claim 1 wherein said encoding involves transcoding.

22. The method of claim 1 wherein said data rate is based upon the amount of data within said buffer at said sender.

23. The method of claim 1 wherein said data rate is based upon the amount of data within said buffer at said receiver.

24. The method of claim 1 wherein said data rate is based upon the amount of data in the channel between said encoder at said sender and said decoder at said receiver.

25. The method of claim 1 wherein said data rate is based upon said tolerance to delay within the system.

26. The method of claim 1 wherein said data rate is based upon the relative importance of a portion of encoded video data.