Facsimile apparatus with multiple scanning and printing elements
US4366509A · kind A · utility
8Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1981 |
| Grant date | Dec 28, 1982 |
| Priority date | — |
| Expiry date | Apr 1, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A drum-type transceiver facsimile machine having a plurality of light-to-electric transducers and a plurality of printing styli moved axially of the drum for scan/print operation. Shift register means and a buffer memory controlled by a programmed microprocessor provide for multiplexing of signals from the transducers having a scan operation and demultiplexing of signals during the print mode with use of a buffer memory permitting compression of the multiplexed signals and decompression of received signals prior to demultiplexing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.