System and method for blinking digitally-commanded pixels of a d

Details System and method for blinking digitally-commanded pixels of a d System and method for blinking digitally-commanded pixels of a d

1990-07-27

1992-06-16

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

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

340703, 340793, G09G 128

Patent

active

051227835

ABSTRACT:
A frame rate duty cycle technique and dithering technique is applied to the output of a color look-up RAM in order to drive various flat panel displays. An integrated circuit chip in accordance with the invention includes a modulo-N gray scaling unit, where the value N is variable as well as a pixels dithering unit and a color mixing unit. A brightness spreading memory is included for mapping CRT drive values into LCD drive values.

REFERENCES:
patent: 4427979 (1984-01-01), Clerc et al.
patent: 4488150 (1984-12-01), Kanatani
patent: 4516118 (1985-05-01), Wahlquist
patent: 4709995 (1987-12-01), Kuribayashi et al.
S-MOS Systems, Inc. sales brochure for "Dragon Graphic Chip Sets" (Preliminary), undated.

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