Reproducing method, reproducing apparatus, recording method, and recording apparatus
US7873162B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2007 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Mar 27, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2529
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording method including searching for at least one of a plurality of free areas on a storage medium, said storage medium including a file that is stored according to a file system; generating a track descriptor; generating a part descriptor; recording data encrypted with an encryption key in at least one free area; connecting the free area where the encrypted data is recorded to an end of the file managed by the file system; recording in the part descriptor the part pointer information that points to the free area where the encrypted data is recorded; recording in the track descriptor a decryption key so as to enable later decryption of the encrypted data, and pointer information that points to the part descriptor; and recording a track number that points to the track descriptor in a play order table having a play order of a plurality of tracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.