The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 1995
Filed:
Dec. 23, 1993
Shigeto Funado, Saitama, JP;
Sony Corporation, Tokyo, JP;
Abstract
An apparatus and a method for adjusting a video display, device with no need to determine precisely the positional relationship between an image producing element 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 detected by a image input. Camera and 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 the 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 the video display device.