Information retrieval apparatus for searching target literature data from an information recording medium, including reuse of past retrieving results
US5457794A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1993 |
| Grant date | Oct 10, 1995 |
| Priority date | — |
| Expiry date | Apr 19, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99933
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an information retrieval apparatus for retrieving large quantities of the document files stored in the information recording medium by the successive matched comparison between the character string of a target and the character string in the coded document. When the retrieving result of the document file retrieved in the past is stored within the information recording medium together with the retrieving conditions and the document file is retrieved again with the same retrieving conditions, the information retrieval apparatus of the present invention makes it unnecessary to retrieve the document file itself by the reuse of the past retrieving results if the latest retrieved date and time are newer than the recording date and time of the document file so as to shorten the retrieving time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.