Recorders – Combined with external recorder operating means – Single external means for plural markers – single record
Patent
1980-04-28
1982-06-08
Hartary, Joseph W.
Recorders
Combined with external recorder operating means
Single external means for plural markers, single record
340716, 340798, 346 76PH, G01D 900, G01D 1510
Patent
active
043342310
ABSTRACT:
A convenient hard copy output of a cathode ray tube (CRT) screen display is provided by a thermal printer which prints a line of dots equal in number to the number of dots in one raster scan on the CRT screen by printing the serial digital information in one such raster scan, as generated by the display device prior to incorporation into a composite video signal, during each refresh cycle of the screen until the entire screen content has been reproduced. Use of one line during each refresh cycle enables the reproduction of the screen content by gating the serial data from the display control circuitry without the need for a separate character generator or the related circuitry and also accommodates the use of an interlaced raster.
REFERENCES:
patent: 3373437 (1968-03-01), Sweet
patent: 3945019 (1976-03-01), Ueno
patent: 4141018 (1979-02-01), Mizuguchi
patent: 4158203 (1979-06-01), Johnson
Hartary Joseph W.
International Business Machines - Corporation
Lahtinen Robert W.
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