Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1989-04-18
1990-03-13
James, Andrew J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
350333, 350339F, 358 58, 358 59, 340784, G02F 1133, G02F 123, H04N 930
Patent
active
049078623
ABSTRACT:
Described herein are a method for generating electronically controllable color elements and a color display based on the method, comprising a light gate matrix (9), and a light source system with a set of primary color sources (6, 7, 8) for the primary colors (R, G, B), and control circuits (1 . . . 4) for controlling the transmission of light gates in the light gate matrix (9) for a level corresponding to the intensity of the respective primary color in the composite color spectrum of the displayed picture element. In accordance with the invention, the primary color is generated by pulsing the primary color sources and using only one light gate per picture element for controlling the primary color intensities at the picture element. The present invention facilitates, among other things, perfect color convergence, improved light transmission efficiency, and simpler production technology for transmission type color displays, due to single light gate construction of the controlled light gate matrix (FIGS. 1a and 1b).
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Duong Tai V.
James Andrew J.
Oy Lohja AB
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