Process for recording a scrambled MPEG stream
US7079752B1 · kind B1 · utility
47Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2000 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Jan 20, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8227
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A process whereby scrambled data of the stream are, in parallel with their recording (6), descrambled (2, 3) so as to extract (4) therefrom additional data corresponding to information required by at least one function of the special mode or “trick mode” (fast forward, fast rewind, accelerated motion, slow motion, etc.). These additional data are also recorded (6) on the recording medium. Applications relate most particularly to recordings on hard disk or DVD.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.