Stream generation method, broadcast receiving apparatus, and display method
US8532292B2 · kind B2 · utility
1Cited by
5References
5Claims
0Family size
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Key dates
| Filing date | May 15, 2007 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Feb 28, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a system far receiving a initialization packet containing an initial vector for initializing stream encryption algorithm and an identifier of a key for decrypting an encrypted stream, initializing a decryption module, and decrypting the encrypted stream, wherein the system stores an identifier of a key which is needed to decrypt a next program in a initialization packet of a current program and informs a user of whether a desired key has been acquired or not at timing close to start time of the next program.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.