Gray scale display driving method of a matrix liquid crystal dis

Details Gray scale display driving method of a matrix liquid crystal dis Gray scale display driving method of a matrix liquid crystal dis

1995-10-25

1998-03-03

Tung, Kee M.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345149, 358458, G09G 336

Patent

active

057240582

ABSTRACT:
A gray scale display driving method of a matrix liquid crystal display (LCD) and a display driver implementing this method, can reduce the scanning and data electrode driving signal voltages and the driving voltage magnitude variation for the respective sub-frames and can improve the picture quality. The method includes the steps of determining an n-bit error-diffused value of N-bit picture data, where n is smaller than N, converting the N-bit picture data into an M-bit code, where M is larger than or equal to N, error-diffusing n-bits of the converted picture data, and displaying picture data of M-n bits, with n bits being error-diffused, as a picture by a gray display method.

REFERENCES:
patent: 5254982 (1993-10-01), Feigenblatt et al.
patent: 5463478 (1995-10-01), Makita et al.

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