Data compression method and apparatus
US5150119A · kind A · utility
22Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1991 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Aug 13, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/3088
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a data compression method based on an LZW coding procedure, a list which defines a sequence of tracing partial strings registered in a dictionary is modified so that a position of a first registered partial string among the registered partial strings in a tree structure of registered partial strings is interchanged with a position of a second registered partial string among the registered partial strings in a state where the first and second registered partial strings extend from an identical node of the tree structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.