METHOD AND DEVICE FOR PRELIMINARY COMPENSATION OF ASYMMETRIC IMAGE IN PROJECTION DISPLAYING SYSTEM Russian patent published in 2000 - IPC

Abstract RU 2151416 C1

FIELD: projection equipment. SUBSTANCE: method involves preliminary compensation of trapezoid distortions of asymmetric image. If projection lens in projection device is located at descending angle, then goal of invention is achieved by responding to projection angle setting signal from projection angle setting unit. This results in correct projection of image on screen (for example, it is shaped as rectangle). Goal of invention is also achieved by using digital circuits and software tools. EFFECT: projection of improved image, increased functional capabilities, facilitated use. 22 cl, 12 dwg

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RU 2 151 416 C1

Authors

Vu Seong Dzhej

Dates

2000-06-20Published

1996-07-22Filed