Apparatus, method, and computer program product for playing back content
US7545943B2 · kind B2 · utility
4Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2006 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | May 14, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/00507
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A content playback apparatus includes an SKF selecting unit that selects one segment key file from plural segment key files recorded in a DVD media at a time of playback of a content of the sequence key section, a data selecting unit that selects each content corresponding to a segment number of each key entry registered in the selected segment key file, a moving picture data decrypting unit that decrypts the selected moving picture data by a segment key corresponding to the segment number, and a decoder that plays back the decrypted moving picture data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.