Method and apparatus for appending data to compressed records previously stored on a sequentially-accessible storage medium
US5586280A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1995 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Apr 5, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99932
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of appending data to compressed data stored on tape (10) in the form of records (CR.sub.n) wherein compressed data is stored in groups (G.sub.n) independently of the record structure of the data and each group has an associated data structure (4), containing information relating to the group contents in terms of entities (E.sub.n), where an entity can contain more than one record, and means (H) for storing information on the number of records in each entity (E.sub.n) characterised by locating the entity containing the last record to be retained and changing said stored information to indicate the number of wanted records in that entity and writing the data being appended to a subsequent new entity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.