Data compression system
US4087788A · kind A · utility
49Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1977 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Jan 14, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data compression system is disclosed in which the left-hand boundary of a character is developed in the form of a sequence of Freeman direction codes, the codes being stored in digital form within a processor. The number of binary data bits required to define the character using different criteria is then generated and compared to determine which criteria defines the character in the minimum amount of binary data bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.