Geometry adjustment circuit for a color video projector producin

Details Geometry adjustment circuit for a color video projector producin Geometry adjustment circuit for a color video projector producin

1986-03-17

1987-11-10

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 64, 358237, 315368, H04N 931, H04N 3233, H04N 918, H01J 2970

Patent

active

047061154

ABSTRACT:
A geometry adjustment device for a color video projector having three monochrome tubes each projecting an image of a given color on a screen, comprising a geometry correction circuit adjustable by the user for providing, by acting on a single signal, vertical amplitude, vertical linearity and horizontal trapezoid corrections of the images projected on the screen by the tubes.

REFERENCES:
patent: 3943279 (1976-03-01), Austefjord
patent: 4395662 (1983-07-01), Sexton, Jr.
patent: 4422019 (1983-12-01), Meyer
patent: 4422020 (1983-12-01), Lehnert et al.
Darr, J., "Convergence in Basic English", Radio-Electronics, Jan. 1966, pp. 46-49.
Robertson, A., "Projection Television", Wireless World, Sep. 1976, pp. 47-52.
Elmer, S. J., "A Color Calligraphic CRT Projector for Flight Simulation," Proceedings of the S.I.D., vol. 23, No. 3, 1982, pp. 151-157.

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