Adjustment apparatus for video display means

Adjustment apparatus for video display means

Disclosed is the invention offering an apparatus and a method for adjusting video display, with no need to determine precisely the positional relationship between an image input member and the video display area of a projector or monitor while the latter device is being adjusted for video display by...

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1. Verfasser: FUNADO, SHIGETO
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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creator FUNADO, SHIGETO
description Disclosed is the invention offering an apparatus and a method for adjusting video display, with no need to determine precisely the positional relationship between an image input member and the video display area of a projector or monitor while the latter device is being adjusted for video display by detecting beam positions. The entire video display area is photographed by image input means. The video display area information thus obtained is represented by the coordinates, in a memory, of four points enclosing the area. The memory coordinates of first points to be obtained based on a reference image are calculated from the coordinates of these four points. The coordinates of the first points are compared with those of the second points determined with respect to the reference image. The result is used to operate a system controller for adjustment and control of video display.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
title Adjustment apparatus for video display means
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