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EP0515015A2
Expired / Lapsed
EP
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Method and apparatus for interacting with a computer generated projected image
Assignee: nView Corp
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Filing: 1992-01-17
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Granted: —
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Expires: 2012-01-17
Abstract
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. <IMAGE>
Inventors
- 👤 James H Vogeley
- 👤 Arthur W. Vogeley
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:12
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/038; G06F3/0386; G06K; G06K11/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
69 words
An apparatus enabling an operator to interact with a computer, said apparatus comprising; an image projection system, responsive to said computer, for projecting an image on an image surface; a radiation projector, controlled by said operator for providing at least one radiation spot on said image surface; position sensing means, responsive to the position of said radiation spot on said image surface, for providing position information to said computer.
Claim 2
Dependent Claim
27 words
The apparatus of claim 1 wherein said computer further includes means for generating a visible image at a position related to the position of said radiation spot.
Claim 3
Dependent Claim
32 words
The apparatus according to claim 1 or 2, in which said radiation projector projects radiation in the invisible frequency spectrum, or in which said radiation projector projects radiation in the visible range.
Claim 4
Independent Claim
20 words
The apparatus according to any preceding claim, wherein said image surface comprises a reflective screen or a back projection screen.
Claim 5
Independent Claim
43 words
The apparatus according to any preceding claim, wherein said position sensor means comprises a position sensing diode having position outputs and means responsive to said position sensing diode position outputs for calculating position information therefrom and providing said position information to said computer.
Claim 6
Independent Claim
172 words
An apparatus enabling an operator to interact with a computer, said apparatus comprising: a liquid crystal display image projection system, responsive to said computer, for projecting an image on an image surface, said projection system comprising: a projection light source; a liquid crystal display panel, responsive to said computer and located along a projection optical axis from said light source, for generating images; lens means, along said optical path, for projecting said images on said image surface; a handheld radiation projector, controlled by said operator, for providing at least one radiation spot on said image surface; position sensing means, responsive to the position of said radiation spot on said image surface, for providing position information to said computer, said position sensing means comprising; position sensing diode means for providing an output to said computer indicative of the position of said radiation on said image surface; means for focussing light reflected from said image surface along a reflected light optical axis and onto said position sensing diode, said reflected light including said radiation.
Claim 7
Dependent Claim
72 words
The apparatus according to claim 6, wherein said projection system lens means comprises: a projection lens for focussing and projecting said image along said projection light optical axis and onto said image surface; and a lens for focussing said images from said liquid crystal display along said projection light optical axis upon said projection lens, said reflected light optical axis and said projection light optical axis preferably being at least partially coincident.
Claim 8
Dependent Claim
46 words
The apparatus according to claim 6 or 7, wherein said handheld radiation projector comprises means for generating a laser beam and said laser beam comprises visible radiation or wherein said handheld radiation projector comprises means for generating an infrared beam said infrared beam comprises said radiation.
Claim 9
Independent Claim
48 words
A method of interacting with a projected computer-controlled visible image comprising the steps of: projecting at least a beam of radiation onto said projected image under the control of an operator; sensing the position of said beam on said image; and providing said position information to said computer.
Claim 10
Dependent Claim
69 words
The method of claim 9 wherein said projected computer-controlled image includes projecting said image along a projection optical path, said sensing step includes the step of focussing an image of said beam on said projected image on a position sensing means, and said focussing step preferably includes focussing said beam image along a reflected light optical path which is at least partially coincident with said projected light optical path.
Claim 11
Dependent Claim
51 words
The method of claim 9 or 10 further including the step of controllably generating an image of said beam at said sensed position on said projected image, or the step of controllably changing at least a portion of said image of said beam at said sensed position on said projected image.
Claim 12
Dependent Claim
87 words
The method of claim 9,10 or 11, wherein said projecting step and sensing step include at least one of: (i) projecting a laser beam onto said projected image, and sensing the position of the laser beam on said projected image; (ii) projecting an infrared beam onto said projected image, and sensing the position of the infrared beam on said projected image, and (iii) projecting a pulse code modulated beam onto said projected image, and sensing the position of the pulse code modulated beam on said projected image.
References Cited (Backward Citations)
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