Two-level display device with hatching control means

Details Two-level display device with hatching control means Two-level display device with hatching control means

1988-09-01

1991-10-22

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

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

340703, 340784, G09G 300, G09G 336

Patent

active

050599631

ABSTRACT:
A display device of a type for displaying in two levels is so controlled as to display images of different colors by hatching according to different patterns such that images of different colors can be distinguished. In order to prevent distortion of image caused by hatching, hatching corresponding to any particular color can be selectively prevented. With a binary conversion circuit with adjustable reference voltages, an image with various combinations of analog color signals can also be displayed.

REFERENCES:
patent: 4688031 (1987-08-01), Haggerty
patent: 4791417 (1988-12-01), Bobak
patent: 4808991 (1989-02-01), Tachiuchi et al.
patent: 4827255 (1989-05-01), Ishii
patent: 4833464 (1989-05-01), Di Santo et al.

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