Data file directory system and method for writing data file directory information
US5537652A · kind A · utility
19Cited by
16References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1990 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Aug 20, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage medium having the ability to recover from media errors includes a directory located at any desired region of a data storage area with redundant directory pointers at reserved locations. A unique file token is included in the directory entry for each data file and is also included in each extent list where the locations of parts of a fragmented data file are stored. Multiple extent lists are chained in two directions to facilitate reconstruction of the chain if part of the pointer information is lost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.