Method and apparatus for performing trick play on scrambled data stream
US8571208B2 · kind B2 · utility
0Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2008 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Feb 17, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8205
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of performing trick play on a scrambled data stream, the method comprising: extracting position information corresponding to scrambling information from an input scrambled transport stream; demultiplexing a transport stream of a predetermined position according to the stored position information of the scrambling information and extracting the scrambling information and a scrambled data stream pertaining to the scrambling information; descrambling the extracted scrambled data stream by using the extracted scrambling information; and decoding a reference picture based on the position information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.