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:
Jun. 06, 1995
Filed:
May. 28, 1993
James H Vogeley, Yorktown, VA (US);
Arthur W Vogeley, Yorktown, VA (US);
nView Corporation, Newport News, VA (US);
Abstract
Disclosed is a method and apparatus for one or more operators to interact with a computer-controlled image projection-system. An operator-controlled radiation projector projects a beam of radiation which may be visible or invisible on the image created by the computer-controlled image projection system. A position sensing device determines the position of the projected radiation relative to the projected image and provides position information to the computer. In a preferred embodiment, the computer can then generate an additional image at or related to the spot of radiation permitting the operator to draw or paint pictures on the computer-projected image. In an additional preferred embodiment, the use of the position sensing device can be utilized to sense the position of a spot projected by one or more of a multiple gun projector which in a closed loop feedback loop can be used to control alignment of images projected by the multiple gun projector. In a preferred three-gun projector embodiment, the relationship between a spot projected by one or more projectors and its position as determined by two or less position sensors results in accurate alignment in translation, roll and magnification.