System for improving two-color display operations

Details System for improving two-color display operations System for improving two-color display operations

1989-10-30

1992-07-21

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

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

340701, 340799, G09G 128

Patent

active

051326701

ABSTRACT:
A system is disclosed which reduces significantly the time for processing multi-bit two-color data for display. The system generates multi-bit two-color data by expanding single-bit monochromatic data, and provides three types of output data: a first expanded multi-bit color data, a second expanded multi-bit color data, and a third unchanged multi-bit data, the unchanged data being combinable with other data for producing data overlays.
The system comprises a data expansion circuit for maintaining selected data unchanged and for expanding selected single-bit data to multi-bit two-color data, a memory for storing multi-bit data, and a data compression circuit for compressing selected multi-bit data to single-bit data.

REFERENCES:
patent: 4520356 (1985-05-01), O'Keefe et al.
patent: 4554538 (1985-11-01), Bieneman
patent: 4580134 (1986-04-01), Campbell et al.
patent: 4580135 (1986-04-01), Kummer et al.
patent: 4646077 (1989-02-01), Culley
patent: 4648050 (1987-03-01), Yamagami
patent: 4677427 (1987-06-01), Komatsu et al.
patent: 4888582 (1989-12-01), Schnarel

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