Data compression apparatus, database system, data communication system, data compression method, storage medium and program transmission apparatus
US7043686B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2000 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Jun 1, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99942
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
It is one object of the present invention to perform data compression to encode the structure part of a document in a tree local language, such as XML or ASN.1.A data compression apparatus for encoding data and for compressing the encoded data comprises: a grammar rule 12 for a tree local language in which data are represented by a labeled tree structure; an encoder 11 for reading a document written in the tree local language, for dividing the document into a structure part and contents, and for encoding the structure part using the grammar rule 12; and a compressor 13 for compressing the contents of the document extracted by the encoder 11, and for encoding the compressed contents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.