Method of and apparatus for digital data storage
US6828967B1 · kind B1 · utility
12Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2001 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Jul 14, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Digital data storage conventionally requires an election to be made between retaining data on-line, which consumes expensive media, or moving it to a far cheaper archive medium, which is relatively inacessible. This specification discloses a hybrid arrangement in which all material is retained on-line, but is progressively degraded as it becomes less useful, with off-line storage of the source material. On-line browsing of an entire library remains possible, but without incurring the expense of maintaining the entire library at source quality on-line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.