AREA OF INTEREST PROCESSING OF VIDEO DELIVERED TO HANDHELD DEVICE

• US 20090300701A1
• Filed: 08/11/2008
• Published: 12/03/2009
• Est. Priority Date: 05/28/2008
• Status: Abandoned Application

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rosmann, David, Chen, Sherman (Xuemin), Karaoguz, Jeyhan, Quigley, Thomas J., Dove, Michael, Gordon, Stephen E.
• Application Number:
  US12/189,401
• Publication Number:
  US 20090300701A1
• Time in Patent Office: Days
• US Class Current: 725/119
• CPC Class Codes: H04N 21/234363 by altering the spatial resolution, e.g. for clients with a lower screen resolution
• CPC Class Codes: H04N 21/2387 Stream processing in response to a playback request from an end-user, e.g. for trick-play
• CPC Class Codes: H04N 21/4728 for selecting a Region Of Interest [ROI], e.g. for requesting a higher resolution version of a selected region
• CPC Class Codes: H04N 21/6587 Control parameters, e.g. trick play commands, viewpoint selection
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests

Abstract

Processing a video stream intended for a remote wireless device by a video processing system based upon identified area of interest information to produce an output video stream having lesser required data throughput. Operation commences with receiving the video stream and buffering the video stream. Then the video processing system identifies an area of interest corresponding to at least one video frame of the video stream. The video processing system the processes the video frames of the video stream based upon the identified area of interest to produce an output video stream. The video processing system then transmits the output video stream for delivery to the remote wireless device. Processing video frames of the video stream may include altering pixel resolution, color resolution, and/or cropping video information of the video frames outside of the area of interest.

Claims

1. A method for processing a video stream intended for a remote wireless device, the method comprising:

receiving the video stream;

identifying an area of interest corresponding to at least one video frame of the video stream;

processing video frames of the video stream based upon the identified area of interest to produce an output video stream; and

transmitting the output video stream for delivery to the remote wireless device.

2. The method of claim 1, wherein processing video frames of the video stream based upon the identified area of interest to produce an output video stream includes altering a pixel resolution of the video frames of the video stream within the area of interest.

3. The method of claim 1, wherein processing video frames of the video stream based upon the identified area of interest to produce an output video stream includes altering a pixel resolution of the video frames of the video stream outside of the area of interest.

4. The method of claim 3, wherein altering a pixel resolution of the video frames of the video stream outside of the area of interest to produce the output video stream includes at least one of:

decreasing pixel resolution of the video frames outside of the area of interest;

reducing color resolution of the video frames outside of the area of interest; and

removing color content of the video frames outside of the area of interest.

5. The method of claim 1, wherein processing video frames of the video stream based upon the identified area of interest to produce an output video stream includes cropping video information of the video frames outside of the area of interest.

6. The method of claim 5, further comprising scaling the cropped video frames to fit a display of the wireless device.

7. The method of claim 1, wherein identifying the area of interest corresponding to at least one video frame of the video stream comprises receiving area of interest selection information from the wireless device.

8. The method of claim 1, wherein identifying the area of interest corresponding to at least one video frame of the video stream comprises receiving area of interest information from a source of the video stream.

9. The method of claim 1, wherein identifying the area of interest corresponding to at least one video frame of the video stream comprises receiving area of interest information from an area of interest server.

10. A video processing system comprising:

a communications interface; and

processing circuitry coupled to the communications interface that, in cooperation with the communications interface, is operable to;

receive the video stream;

identify an area of interest corresponding to at least one video frame of the video stream;

process video frames of the video stream based upon the identified area of interest to produce an output video stream; and

transmit the output video stream for delivery to the remote wireless device.

11. The video processing system of claim 10, wherein in processing video frames of the video stream based upon the identified area of interest to produce an output video stream, the processing circuitry is operable to alter a pixel resolution of the video frames of the video stream within the area of interest.

12. The video processing system of claim 10, wherein in processing video frames of the video stream based upon the identified area of interest to produce an output video stream, the processing circuitry is operable to alter a pixel resolution of the video frames of the video stream outside of the area of interest.

13. The video processing system of claim 12, wherein the processing circuitry is operable to alter a pixel resolution of the video frames of the video stream outside of the area of interest to produce the output video stream by:

decreasing pixel resolution of the video frames outside of the area of interest;

reducing color resolution of the video frames outside of the area of interest; and

removing color content of the video frames outside of the area of interest.

14. The video processing system of claim 10, wherein in processing video frames of the video stream based upon the identified area of interest to produce an output video stream, the processing circuitry is operable to crop video information of the video frames outside of the area of interest.

15. The video processing system of claim 14, wherein in processing video frames of the video stream based upon the identified area of interest to produce an output video stream, the processing circuitry is further operable to scale the cropped video frames to fit a display of the wireless device.

16. The video processing system of claim 10, wherein the processing circuitry is operable to identify the area of interest corresponding to at least one video frame of the video stream by receiving area of interest selection information from the wireless device.

17. The video processing system of claim 10, wherein in processing video frames of the video stream based upon the identified area of interest to produce an output video stream, the processing circuitry is operable to identify the area of interest corresponding to at least one video frame of the video stream comprises by receiving area of interest information from a source of the video stream.

18. The video processing system of claim 10, wherein identifying the area of interest corresponding to at least one video frame of the video stream comprises receiving area of interest information from an area of an area of interest server.

19. A method for processing a video stream intended for a remote wireless device, the method comprising:

receiving the video stream by the remote wireless device, the video stream having a first video stream format;

identifying, based upon user input, an area of interest corresponding to at least one video frame of the video stream;

transmitting, by the wireless device to a remote video processing system, area of interest information regarding the identified area of interest;

receiving the video stream by the remote wireless device, the video stream having a second video stream format that is based upon the area of interest information.

20. The method of claim 19, wherein, as compared to its first video stream format, the video stream in its second video stream format has at least one of:

a differing video frame resolution;

a differing pixel resolution within the area of interest;

a differing pixel resolution outside of the area of interest;

a differing color resolution outside of the area of interest; and

differing color content outside of the area of interest.

21. The method of claim 19, wherein the video stream having the second video stream format requires less transmission bandwidth than does the video stream having the first video stream format.

22. A wireless device comprising:

a communications interface; and

processing circuitry coupled to the communications interface that, in cooperation with the communications interface, is operable to;

receive a video stream having a first video stream format;

identify, based upon user input, an area of interest corresponding to at least one video frame of the video stream;

transmit to a remote video processing system area of interest information regarding the identified area of interest;

receive the video stream having a second video stream format that is based upon the area of interest information.

23. The wireless device of claim 22, wherein, as compared to its first video stream format, the video stream in its second video stream format has at least one of:

a differing video frame resolution;

a differing pixel resolution within the area of interest;

a differing pixel resolution outside of the area of interest;

a differing color resolution outside of the area of interest; and

differing color content outside of the area of interest.

24. The method of claim 22, wherein the video stream having the second video stream format requires less transmission bandwidth than does the video stream having the first video stream format.