Facsimile transmitter
US4470073A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/419
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a facsimile transmitter in which original document information to be transmitted is photoelectrically converted to an analog video signal which is binary-coded through a binary-coder to be stored in a buffer memory, and the stored information is read from the buffer memory to be sent to transmission lines the transmitter is further provided with a transition detector for detecting the transition point of the binary-coded video signal read from the buffer memory, a run length signal generator for counting the number of pulses of a clock signal until the transition point of the binary-coded video signal is detected thereby to generate a run length signal, and a small computer for effecting the redundancy suppressing process on the basis of the binary-coded video signal and the run length signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.