Optical disk write method
US5721856A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1995 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | Nov 1, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2545
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a first step of an optical disk write method, an area for logical format information is reserved on an optical disk; in a second step, variable-length packets, each packet comprising a demarcation block and a variable-length data block including a new file or a corrected file, on a data area, in response to a write instruction for writing the new file or the corrected file; in a third step, a volume history indicating a logical structure of files is maintained and file logical information for written and deleted files is chronologically appended to the volume history; in a fourth step, logical format information of the optical disk is produced based on the volume history, in response to an instruction for finalization; and in a fifth step, the logical format information, a lead-in area and a lead-out area are provided on the optical disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.