Unique identifier per chip for digital audio/video data encryption/decryption in personal video recorders
US7835520B2 · kind B2 · utility
3Cited by
38References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2003 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Sep 25, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91364
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides techniques to implement unique identifier for an integrated chip and how this ID can be employed to enhance the security of content in personal video recorder type systems. The storage device can be a hard disk, a removable storage medium or any other type of storage medium. An integrated circuit (IC) within the personal video recorder stores a unique identifier that is used in for encryption and decryption of data stored on the storage device. Several embodiments are disclosed herein that maintain the secrecy of the unique ID such that it is not easily accessible thereby defeating the security scheme.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.