Data compressor, data decompressor, and data management system
US7774387B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2004 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Feb 7, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A data compressor including a separating unit configured to separate input data into cross reference data with the reference information between the vertices, and a vertex group including the plurality of vertices with the types and values, and to output data of the vertex group thus separated; a template storing unit configured to store reference information between vertices having a specific pattern, as a template; a template match detecting unit configured to detect a portion matching the template stored in the template storing unit, from the cross reference data separated by the separating unit; and a template replacing unit configured to replace the matched portion detected by the template match detecting unit with the template, in a state in which the reference information between the vertices can be referred to, and to output the replaced cross reference data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.