Reproduction method and apparatus, and recording method and apparatus
US7301856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2003 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Nov 16, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2529
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Decrypting information corresponding to a selected track, file pointer information, and index information are read out from a track information table having the decrypting information corresponding to each track, the file pointer information showing one of a plurality of files with headers, and the index information showing a position in the file. The header of the file with the header is read out on the basis of the file pointer information and position information in the file corresponding to the index information is detected from the header. A part of data of the file is read out on the basis of the position information and the read-out data is decrypted on the basis of the decrypting information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.