Encoded video image formatting
US7046916B1 · kind B1 · utility
2Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1998 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Oct 28, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8042
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are provided to enable variable speed forwards or reverse play of motion-prediction coded sequences of video signal frames. Successive images of a sequence are MPEG encoded with some images of the sequence becoming I-frames and the remainder P- or B-frames. The frame data is formatted to sequences of fixed size data blocks (I,P,B) to form a data block stream into which further, information blocks (i) are inserted at periodic intervals. Each information block (i) carriers a pointer to the relative location in the data block stream of the first data block of the immediately preceding I-frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.