Content provider system
US6807641B1 · kind B1 · utility
44Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2001 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Jan 16, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2101
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Even if contents data distributed over a network are once destroyed, the contents data are restored, as the copyright protection is maintained. A PC memorizes backup of distributed music contents on a hard disc, at the same time as it transmits the using log information of the music contents stored in the hard disc to an EMD server. If the music contents in the hard disc are destroyed, the PC acquires the using log information from the EMD server to reproduce the backup data memorized in the hard disc depending on the using log information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.