Video navigation system and method

• US 8,942,536 B2
• Filed: 09/19/2007
• Issued: 01/27/2015
• Est. Priority Date: 09/19/2007
• Status: Active Grant

• Current Assignee: NVIDIA Corporation
• Original Assignee: NVIDIA Corporation
• Inventors: Herz, William S.
• Primary Examiner(s): Vaughn, Jr., William C
• Assistant Examiner(s): ADAMS, EILEEN M
• Application Number:
  US11/903,012
• Publication Number:
  US 20090074377A1
• Time in Patent Office: 2,687 Days
• Field of Search: None
• US Class Current: 386/219
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8042 involving data reduction

Abstract

A video navigation system and method can be utilized to efficiently and adjustably navigate video content. In one embodiment, a video information control method facilitates efficient video navigation. A video stream is received and video access point selection between multiple access points in said video stream is controlled. The presentation information is forwarded for each of the multiple access points. In one exemplary implementation, the presentation information is forwarded to a display and the information is directed to presenting a main viewing area and navigation areas that present looping video clips or portions of the video stream at time intervals ahead of and behind the video portion being presented in the main viewing area.

Claims

1. A video information control method comprising:

receiving a video stream;

controlling video information generation in a processor based upon multiple access points in said video stream;

forwarding rendering information corresponding to each of said multiple access points, wherein said forwarding includes forwarding rendering information associated with a plurality of said multiple access points for simultaneous presentation, wherein at least one of said plurality of said access points is associated with a different temporal relationship from another one of said plurality of said access points, wherein said rendering information includes rendering information associated with a main viewing area and a skip clip viewing area, and content from a skip clip viewing area is movable to said main viewing area enabling a skip in the main viewing area to a different time in a normal sequence presentation.

2. A video information control method of claim 1 wherein said controlling includes creating navigation clip information associated with said video stream based upon selection of said multiple access points.

3. A video information control method of claim 2 wherein said navigation clip information includes video frames and sequence information for enabling content navigation.

4. A video information control method of claim 2 wherein said video stream includes an audio video stream and said controlling comprises:

accessing a compressed version of said audio video stream at specific time intervals; and

decoding said compressed version of said audio video stream at the specific time intervals to create said rendering information associated with said navigation clip.

5. A video information control method of claim 1 wherein said controlling comprises adjusting granularity of the length of decoding associated with each of said multiple access points.

6. A video information control method of claim 1 wherein said rendering information includes rendering information associated with a main viewing area and a skip clip viewing area.

7. A video information control method of claim 1 wherein said controlling includes automatically creating skip clip lengths for skip clips based upon duration from a normal sequential presentation time presented in a current main viewing area.

8. A video information control system comprising:

a processor for controlling video access point selection between multiple access points in a video stream and organizing corresponding multiple navigation clip information and forwarding said corresponding multiple navigation clip information for simultaneous presentation, wherein at least one said video access points is associated with a different temporal relationship from another one of said video access points, wherein multiple demultiplex filtering is performed to strip a program stream of its audio video elements for decode and time division multiplexed decompression is performed to establish multiple navigation clip information at different times in a normal sequence presentation;

a memory for storing information, including information for directing said controlling of said video access point selection between multiple video access points in a video stream and organization of said navigation clip information; and

a bus for communicating said information.

9. A video information control system of claim 8 wherein said processor includes multiple source filters where sources are defined as access points to at least one compressed audio video stream.

10. A video information control system of claim 8 wherein said processor performs fast decompression context switching.

11. A video information control system of claim 8 wherein said information includes information associated with overlay blending, background capture, scaling rendering compositing and playback looping.

12. A video information control system of claim 8 wherein said processor performs texture mapping for mapping decompressed video onto three dimensional objects for three dimensional content navigation.

13. A video information control system of claim 8 wherein said processor performs decompression of single intra frame compressed frame and conversion to single frame elements for navigation clip thumbnail generation.

14. A video information control system of claim 8 wherein said processor includes a multi-stream scalar to scale decoded/decompressed video into picture in picture (PIP) windows.

15. A video navigation system comprising:

a processor for controlling video access point selection between multiple video access points in a video stream and organizing corresponding multiple navigation clip information and forwarding said corresponding multiple navigation clip information for simultaneous presentation, wherein at least one said video access points is associated with a different temporal relationship from another one of said video access points, wherein said rendering information includes rendering information associated with a main viewing area and a skip clip viewing area, and content from a skip clip viewing area is movable to said main viewing area enabling a skip in the main viewing area to a different time in a normal sequence presentation;

a memory for storing information, including information for directing said controlling of said video access point selection between multiple video access points in a video stream, wherein said information includes said multiple navigation clip information; and

a display for presenting said multiple navigation clip information.

16. A video navigation system of claim 15 wherein said information includes information associated with a navigation clip carousel presentation.

17. A video navigation system of claim 15 wherein said information includes information associated with a navigation clip globe.