Process and device for the control of a microtip fluorescent dis

Details Process and device for the control of a microtip fluorescent dis Process and device for the control of a microtip fluorescent dis

1994-07-21

1996-09-10

Hjerpe, Richard

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345147, G09G 312

Patent

active

055550002

ABSTRACT:
A device and a process for the control of a microtip fluorescent screen or display formed from pixels arranged in accordance with L rows and M columns of images able to have a discrete number of Q grey tones, in which the column voltage values are chosen in a strictly increasing sequence of N+1 values such that the row selection time being subdivided into S equal time intervals .DELTA.t, each voltage value is applied an integral number of times .DELTA.t, (N.times.S)+1 representing the number of grey levels, with N.gtoreq.2 and S.gtoreq.2. During a row selection time, the corresponding column voltage assumes a first value Va during a certain number of time intervals .DELTA.t, then during the remaining time intervals it additionally has a second value Vb following onto the first in the sequence of N voltages.

REFERENCES:
patent: 5075683 (1991-12-01), Ghis
patent: 5196738 (1993-03-01), Takahara et al.
patent: 5250937 (1993-10-01), Kikuo et al.
patent: 5343221 (1994-08-01), Arakawa et al.
patent: 5363118 (1994-11-01), Okumura
Electronic Circuits Discrete and Integrated, Donald L. Schilling, 1979, pp. 706 and 712-712.

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