Color display using auxiliary memory for color information

Details Color display using auxiliary memory for color information Color display using auxiliary memory for color information

1977-12-27

1980-06-03

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340744, 340799, G06K 1520

Patent

active

042064570

ABSTRACT:
Method and circuit for controlling the color of dot elements in a raster scan display having a data memory for storing the state (on or off) of dot elements which are mapped onto the raster scan display and a smaller auxiliary memory for storing color information. The color information stored in a location of the auxiliary memory specifies the color of a plurality of contiguous dot elements so that the auxiliary memory can be much smaller than the data memory. The contiguous dot elements whose color is specified by a location in the auxiliary memory form a block which can be arranged so that the address bits to the auxiliary memory form a proper subset of the address bits to the data memory.

REFERENCES:
patent: 3624634 (1971-11-01), Clark
patent: 3771155 (1973-11-01), Hayashi et al.
patent: 3854130 (1974-12-01), Ligocki
patent: 3911418 (1975-10-01), Takeda
patent: 4016544 (1977-04-01), Morita et al.
patent: 4150364 (1979-04-01), Baltzer

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