Method of transmitting serial data between facsimile equipment and interface performing the same
US4533958A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1983 |
| Grant date | Aug 6, 1985 |
| Priority date | — |
| Expiry date | Jun 23, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40068
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of transforming serial binary data exchanged between facsimile transceivers having different horizontal resolutions. Binary signal elements representing a scanning line are separated into a sequence of n bit data words and the number and type of subsequent bit changes within each data word is derermined. A conicident sequence of m bit data words is generated such that the bit pattern of each corresponding n bit data word substantially is reproduced by arbitrarily padding of an insignificant bit if n<m and by dropping of an insignificant bit, respectively if n>m; wherein n:m corresponds to the ratio of the transceiver resolutions. The serial data stream is reproduced from the sequence of said second data words and transmitted to the receiving facsimile transceiver for recording.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.