Method and system for digitally signing MPEG streams
US7058815B2 · kind B2 · utility
51Cited by
11References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2001 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | May 19, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8352
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method and system for embedding a digital signature into an MPEG stream. In the preferred embodiment, the digital signature is embedded in a plurality of PCR fields of a transport stream and is encrypted and scrambled to avoid detection and removal. Other embodiments are disclosed, each of which is designed to place a digital signature in a pre-compressed MPEG stream while requiring minimal computing resources to encode and decode the signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.