Memory write-in control system for color graphic display

Details Memory write-in control system for color graphic display Memory write-in control system for color graphic display

1975-06-17

1977-04-05

Nusbaum, Mark E.

Communications: electrical

Digital comparator systems

340324R, G06F 314

Patent

active

040165442

ABSTRACT:
A memory write-in control system provides for each dot a plurality of color designating bits representing color information for the dot as well as a set of mask command bits corresponding to the respective color designating bits. The memory content is changed in accordance with the color designating bits only when the mask command bits are at one logic level. The memory bit content is unchanged when the mask command bits are at the other logic level irrespective of the color designating bits.

REFERENCES:
patent: 3617626 (1971-11-01), Bluth
patent: 3623005 (1971-11-01), Roberts
patent: 3697956 (1972-10-01), Goldman et al.
patent: 3766528 (1973-10-01), Ichida
patent: 3811113 (1974-05-01), Saito et al.
patent: 3883728 (1975-05-01), Schwartz et al.
patent: 3893075 (1975-07-01), Orban et al.

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