Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1982-01-04
1984-02-07
Chin, Tommy P.
Facsimile and static presentation processing
Static presentation processing
Attribute control
315375, H04N 927, H01J 2980
Patent
active
044306679
ABSTRACT:
A color display system that employs a penetration type CRT, a control circuit and storage elements for holding the information to be displayed to obtain multicolored rastered images is described. The CRT is capable of exhibiting a predetermined number of colors. The storage elements hold information that defines one frame for each displayable CRT color screen. The control circuit supplies appropriate video and drive signals for each color frame to be displayed, at the proper time and sequence, to the CRT. In particular, the control circuit is adapted to provide drive signals for horizontal and vertical electron beam deflection circuits that cause the beam to be scanned, both horizontally and vertically, at a rate that is a multiple of the predetermined number of colors to be displayed and the conventional scan rate for horizontal and vertical deflection. Thus, the predetermined number of frames will be overlaid, relying on the persistence of the CRT screen phosphor composite, to form one user perceived multicolor, flicker-free screenfull of information.
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Chin Tommy P.
International Business Machines - Corporation
Seinberg Saul A.
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