Graphic data processing apparatus for processing pixels having a

Details Graphic data processing apparatus for processing pixels having a Graphic data processing apparatus for processing pixels having a

1989-05-11

1991-08-27

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

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

340744, 364521, G09G 536

Patent

active

050437135

ABSTRACT:
A graphic data processing apparatus is disclosed for accessing a memory which stores pixels having a number of bits which may be selected. Gaphic data is generated with one or more bits per pixel with a plurality of pixels of data being stored in one word of the memory. A physical address operation unit stores information of a current drawing point including a memory address of a word in the memory and a pixel address defining a position of a pixel in one word specified by the memory address. A data operation unit modifies a particular pixel having a number of bits which may be selected in the one word specified by the pixel address in accordance with a drawing instruction.

REFERENCES:
patent: 4121283 (1978-10-01), Walker
patent: 4509043 (1985-04-01), Mossaides
patent: 4639879 (1987-01-01), Chaya
patent: 4667305 (1987-05-01), Dill et al.

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