Data communication apparatus and data communication method
US5253936A · kind A · utility
7Cited by
6References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1992 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Oct 13, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4105
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to this invention, an image binarized by a pseudo halftone binarization processing method is forcibly encoded by an MH encoding method, and a binary image which is not binarized by the pseudo halftone binarization processing method is preferentially encoded by an MR encoding method, so that a high compression ratio can be realized. When this method is applied to a facsimile apparatus, a communication time and a communication charge can be saved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.