Method and system for forming a content stream with conditional access information and a content file
US9060096B2 · kind B2 · utility
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4References
54Claims
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Key dates
| Filing date | Jul 26, 2007 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Jan 13, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/84
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A communication system includes a content repository 274 storing a content file and a video transport processing system 273 in communication with the content repository 274. The video transport processing system 273 receives a plurality of conditional access information, stores a relative time of arrival of each of the plurality of conditional access information and encrypts the content file using the plurality of conditional access information and the relative time of arrival to form an encrypted content file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.