Multiple format interchangeable optical recording medium and method of controlling same
US5708650A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1996 |
| Grant date | Jan 13, 1998 |
| Priority date | — |
| Expiry date | Jun 4, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2525
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Common-use data (FATs, a directory, files, etc.) is recorded in a first area of an interchangeable recording medium, and logical format information of a plurality of types for managing the common-use data recorded in the first area is recorded in the second area. When the interchangeable recording medium is loaded, a computer reads logical format information conforming to its own machine type from the second area and subsequently accesses the common-use data in the first area based upon the logical format information read. Further, a corresponding relationship between computers and storage locations of the logical format information is recorded in a third area of the interchangeable recording medium. Each computer recognizes the location, at which its own logical format information has been stored, by referring to the corresponding relationship and reads the logical format information from this location. The computer subsequently accesses the common-use data in the first area based upon the logical format information read.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.