Video process where part of compressed version of video signal accompanies video signal itself
US6674802B2 · kind B2 · utility
19Cited by
4References
24Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 26, 1999 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Aug 26, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
After decoding of an MPEG bitstream to the form of a video signal, an information stream signal in the form of all or part of the MPEG bitstream, is transmitted alongside the video signal, embedded in the least significant bit. Recording may simply involve extraction of the embedded MPEG bitstream or, if only part of the bitstream has been embedded, an essentially “dumb” coding operation guided by the information stream signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.