Printing apparatus

Details Printing apparatus Printing apparatus

1981-09-29

1984-11-20

Psitos, Aristotelis M.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358284, 346 76PH, 400120, H04N 122, H04N 140, G01D 1510

Patent

active

044842317

ABSTRACT:
A printing apparatus for printing a picture which is formed by a plurality of full and half dots on the screen of a television receiver in response to a luminance signal supplied thereto, includes an integration circuit for integrating the transmitted signal and having a time constant which is selected so that the integrated transmitted signal of a saw-tooth waveform rises to a first level greater than a threshold level when the transmitted signal corresponds to a full dot of displayed information and rises to a second level less than the threshold level when the transmitted signal corresponds to half dot information; a latch circuit for latching the integrated transmitted signal only when the level thereof is greater than the threshold level in response to a latch signal supplied thereto, so as to produce an output signal corresponding only to that portion of the displayed picture formed of full dots; and a printer for printing the picture in response to the output signal.

REFERENCES:
patent: 3413412 (1968-11-01), Townsend
patent: 3696387 (1972-10-01), Nussbaum
patent: 3697976 (1972-10-01), Fznton
patent: 4176272 (1979-11-01), Powers
patent: 4262188 (1981-04-01), Beach
patent: 4290084 (1981-09-01), Minshull et al.
patent: 4334231 (1982-06-01), Regehr
patent: 4877972 (1983-03-01), O'Neil

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