Apparatus and method for controlling picture inversion of a liqu

Details Apparatus and method for controlling picture inversion of a liqu Apparatus and method for controlling picture inversion of a liqu

1997-10-17

2000-03-14

Luu, Matthew

Computer graphics processing and selective visual display system

Display driving control circuitry

G09G 500

Patent

active

060379316

ABSTRACT:
An apparatus and related method for controlling picture inversion of an LCD, determining states of vertical and horizontal sync signals. The determined states are used to insert appropriate delay periods so as to allow picture inversion to take place only when the video signal is in a section of displaying no image, thereby eliminating a noise bar that is displayed during the picture inversion operation.

REFERENCES:
patent: 4639720 (1987-01-01), Rympalski et al.
patent: 4795239 (1989-01-01), Yamashita et al.
patent: 5155477 (1992-10-01), Shirochi
patent: 5656802 (1997-08-01), Aoki

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