Method and apparatus for compressing and decompressing sequential records in a computer system
US5999936A · kind A · utility
33Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1997 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Jun 2, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99942
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for compressing and decompressing sequential records to store only those parts of a record which differ from the previous record. The system for compressing includes a bit map which indicates which parts of a record if any are the same as the preceding record. The system enables compression and decompression of records without the need to access additional blocks and perform additional disk I/Os to obtain the expanded version of a given compressed record.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.