Structured data storage method and medium
US5043967A · kind A · utility
14Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1990 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Aug 20, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2537
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A WORM data storage medium includes primary and secondary data storage areas in which data and pointers to allocated but unwritten update areas are written. Original and updated data is written in a write sequence or chain of primary data areas separated by branched secondary data storage areas. The most recent updated data is found in a two level search of primary and then secondary data storage areas in order to save time by searching only those secondary areas where the most recent update exist.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.