Storage medium conversion method, non-transitory computer readable storage medium and device
US7890773B2 · kind B2 · utility
11Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2006 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Aug 30, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/17
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A user terminal converts stored contents of an SD card to contain second encrypted content key data equivalent to an encrypted title key of SD Audio, and encrypted content equivalent to encrypted content of the SD Audio. Accordingly, compatibility can be realized between an encryption dual key system as a first encryption system and an encryption (single) key system as a second encryption system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.