Patent US3892051A successfully refreshed from Google Patents.
US3892051A
Expired / Lapsed
US
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Simulated collimation of computer generated images
Assignee: General Electric Co
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Filing: 1973-10-31
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Granted: 1975-07-01
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Expires: 1993-10-31
Abstract
Abstract In a training device for pilots, computer-generated images of an external scene as viewed from a cockpit or other pilot stations are presented on a cathode-ray tube or similar display device. In the most nearly similar prior art devices there is no apparent shifting of the viewed scene within the bounds of the display when the observer moves relatively to the display, although such changes would occur in the viewing of an actual distant scene. In the present invention, position sensors attached to the observer''s head, or to the movable cockpit of a conventional type of trainer, produce signals which are incorporated in the computation means which generate the image, to alter the image consistently with the alterations which would occur if the scene being simulated were actually viewed directly. It has been found by actual test on student pilots that this produces an illusion of actually looking through a window at an external scene sufficiently complete to permit substitution of training in a simulating trainer for an appreciable part of the training curriculum ordinarily requiring actual flight.
Inventors
- 👤 William M Bunker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:36
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/30; G09B9/301
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
286 words
In an aircraft trainer apparatus for simulating a view of a distant three-dimensional environment by a nearby numerically controlled two-dimensional presentation, comprising: a. a store of numerical data descriptive of the environment, comprising numerically encoded geometric and visual parameters of the environment together with their three-dimensional coordinates therein; b. a two-dimensional viewscreen adapted to be controllably illuminated at numerically described viewpoint coordinates; c. a store of numerically encoded view window data descriptive of the attitude and location relative to the environment recited in (a) of a fictitious aircraft view window which is simulated by the viewscreen; d. data processing means connected to the store of environmental data recited in (a) and to the store of view window data recited in (c) to receive data from the said two stores and to calculate therefrom the viewscreen coordinate points which, referred to a given observer viewpoint, simulate points in the environment visible through the view window from a given fictitious station point, and to control the viewscreen to be illuminated at those points to simulate the encoded visual parameters of the simulated points; the improvement comprising: e. linear displacement measuring means for measuring threedimensional displacements of an observer from the given observer viewpoint recited in (d), and for generating responsively thereto numerical signals respresentative of the said displacements, connected to data processing means recited in (d), which responsively thereto calculates the viewscreen coordinate points which, referred to the observer viewpoint displaced from the given observer viewpoint, simulate points in the environment visible through the view window from a correspondingly displaced fictitious station point, and to control the viewscreen of said aircraft trainer to be illuminated at those points to simulate the encoded visual parameters of the simulated points.
Claim 2
Dependent Claim
286 words
In an aircraft trainer apparatus for simulating a view of a distant three-dimensional environment by a nearby numerically controlled two-dimensional presentation, comprising: a. a store of numerical data descriptive of the environment, comprising numerically encoded geometric and visual parameters of the environment together with their three-dimensional coordinates therein; b. a two-dimensional viewscreen adapted to be controllably illuminated at numerically described viewpoint coordinates; c. a store of numerically encoded view window data descriptive of the attitude and location relative to the environment recited in (a) of a fictitious aircraft view window which is simulated by the viewscreen; d. data processing means connected to the store of environmental data recited in (a) and to the store of view window data recited in (c) to receive data from the said two stores and to calculate therefrom the viewscreen coordinate points which, referred to a given observer viewpoint, simulate points in the environment visible through the view window from a given fictitious station point, and to control the viewscreen to be illuminated at those points to simulate the encoded visual parameters of the simulated points; the improvement comprising: e. linear displacement measuring means for measuring threedimensional displacements of an observer from the given observer viewpoint recited in (d), and for generating responsively thereto numerical signals respresentative of the said displacements, connected to data processing means recited in (d), which responsively thereto calculates the viewscreen coordinate points which, referred to the observer viewpoint displaced from the given observer viewpoint, simulate points in the environment visible through the view window from a correspondingly displaced fictitious station point, and to control the viewscreen of said aircraft trainer to be illuminated at those points to simulate the encoded visual parameters of the simulated points.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |