System for producing an image from a sequence of pixels

Details System for producing an image from a sequence of pixels System for producing an image from a sequence of pixels

1989-04-10

1991-07-16

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358208, H04N 574

Patent

active

050329243

ABSTRACT:
A system for producing an image by a sequence of intensity values representing pixels of the image which employs means for scanning the image at a non-linear rate and further, includes means modulating the basic illumination and intensity of pixels as a function of scanning speed. The scanner provides a reciprocating scan and in a specific embodiment, a bi-directional scan whereby pixels are projected during both forward and reverse line sweep. The scan pattern is typically sinusoidal but can be any repeatable scan. The rate of output of video data is proportional to the rate of scan as is the average intensity of the output.

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"The Fischer Large Screen Projection System (Eidophor)," E. Baumann, 20 J.SMPE 351 (1953).
W. Turner and R. Sprague, "Integrated Total Internal Reflection (TIR) Spatial Light Modulator for Laser Printing," 299 Proc. SPIE 76 (1981).
R. Sprague et al., "Linear Total Internal Reflection Spatial Light Modulator for Laser Printing," 299 Proc. SPIE 68 (1981).
Murano et al., "A Video Projector Using a PLZT Light Shutter Array," Japanese Journal of Applied Physics, 24 (1985) Supplement 24-2, pp. 139-143.
Ohmura et al., "A New Type of PLZT Light Valve for an Image Projection," 1988 International Display Research Conference.

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