Digital video recorder anti-skip system
US8355506B2 · kind B2 · utility
1Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2005 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Dec 30, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4627
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for producing scrambled content (FIG. 6A), the method including providing content (600) to be scrambled, identifying a first portion of the content (620), identifying a second portion of the content (630), computing a disguising function of at least part of the first portion (620) of the content and producing a result, and scrambling the second portion (630) of the content, the scrambling being based in part, on the result. Related apparatus and methods are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.