Dictionary for textual data compression and decompression
US8326605B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2008 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Feb 5, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/3084
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A dictionary for compressing and decompressing textual data has a number of keys. Each key is associated with an identifier. The keys include static word or phrase keys, where each static word or phrase key lists one or more unchanging words in a particular order. The keys further include dynamic phrase keys, where each dynamic phrase key lists a number of words and one or more placeholders in a particular order, and each placeholder denotes a place where a word or phrase other than the words of the dynamic phrase key is to be inserted. At least one of the dynamic phrase keys may identify one or more of the words by identifiers for corresponding static words or phrase keys. At least one of the static word or phrase keys may identify one or more of the words by identifiers for corresponding other static words or phrase keys.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.