Freeze-picture transmission apparatus

Details Freeze-picture transmission apparatus Freeze-picture transmission apparatus

1982-01-26

1984-08-21

Orsino, Jr., Joseph A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358146, 358183, H04N 712

Patent

active

044673558

ABSTRACT:
The public telephone line has a bandwidth insufficient for the rapid transmission of video signals. A long time period is required therefore. The present invention improves this long transmission time.
The freeze-picture transmission apparatus according to the present invention receives a plurality of video signals in a predetermined order. The received one is compressed and stored in memory. The read-out from the memory is done at a speed corresponding to a bandwidth of the transmission line. The compressed video signal read-out from the memory is transmitted to the reception unit. In the reception unit, the compressed video signal transmitted is once stored in another memory. The read-out from another memory is done at a TV scanning speed. The compressed video signal read-out from another memory is displayed by TV.

REFERENCES:
patent: 2895005 (1959-07-01), Kock et al.
patent: 3761610 (1973-09-01), Krallinger et al.
patent: 3848084 (1974-11-01), Rodda et al.
patent: 4099258 (1978-07-01), Parsons
patent: 4184048 (1980-01-01), Alcaide
patent: 4266242 (1981-05-01), McCoy
Imai et al., Development of Color Freeze Picture Transmission System, NEC Research & Dev., No. 43, pp. 1-13, Oct. 1976.

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