US3621131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual environment simulator
Assignee: United States Department of the Navy
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Filing: 1969-11-21
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Granted: 1971-11-16
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Expires: 1989-11-21
Abstract
Abstract In an electronic synthesizer used in a periscope simulator training device wherein a composite picture of movable targets and a background scene is synthesized on a television display, electrically or mechanically operated optical means are used to shift the area on the background scene observed by a background camera. Means are provided to synchronize the electronic target moving means with the movement of the optical means.
Inventors
- 👤 Hanns H Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:43
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; H04N5/272; G; G09; G09B; G09B9/00; G09B9/02; G09B9/06; G09B9/063
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
186 words
In an electronic synthesizer-type periscope view simulator training device having a plurality of television cameras for observing a plurality of targets and a background scene, a television display mounted in a periscope tube, and synthesizer means including a computer for synthesizing a composite picture of said targets and said background on said television display from the video outputs of said cameras, the improvement comprising: a background camera arranged to observe said background, a mirror rotatably mounted in the optical path between said background and said background camera to project a selected part of said background onto the lens of said background camera; angle-converting means connected to said mirror for converting an angle of rotation into an electrical signal, said angleconverting means being connected to supply said electrical signal to said computer, means connecting said computer to said plurality of cameras and to said display to control said plurality of cameras and said display, the arrangement being such that said computer causes said cameras and said display to effect a shift of the image of said targets in said composite picture in response to said electrical signal.
Claim 2
Dependent Claim
186 words
In an electronic synthesizer-type periscope view simulator training device having a plurality of television cameras for observing a plurality of targets and a background scene, a television display mounted in a periscope tube, and synthesizer means including a computer for synthesizing a composite picture of said targets and said background on said television display from the video outputs of said cameras, the improvement comprising: a background camera arranged to observe said background, a mirror rotatably mounted in the optical path between said background and said background camera to project a selected part of said background onto the lens of said background camera; angle-converting means connected to said mirror for converting an angle of rotation into an electrical signal, said angleconverting means being connected to supply said electrical signal to said computer, means connecting said computer to said plurality of cameras and to said display to control said plurality of cameras and said display, the arrangement being such that said computer causes said cameras and said display to effect a shift of the image of said targets in said composite picture in response to said electrical signal.
Claim 3
Dependent Claim
49 words
The apparatus of claim 1 and including: synchro means for rotating said mirror to change said selected part of said background projected onto the lens of said camera whereby the background in said composite picture is shifted, and control means on said periscope tube for controlling said synchro means.
Claim 4
Dependent Claim
76 words
The apparatus of claim 2 wherein said angle converting means and said synchro means are attached to said mirror so that said angle converter develops an electrical signal proportional to the rotation of said mirror, said computer controlling said cameras and said display so that the shift of the image of said targets in said composite picture is proportional to the shift of the observed background in said composite picture effected by rotation of said mirror.
Claim 5
Dependent Claim
47 words
The apparatus of claim 3 wherein the rotation of said mirror is reversible to raise or lower the selected observed area of said background whereby the appareNt line of sight of said periscope is raised or lowered in accordance with the direction of rotation of said mirror.
Claim 6
Dependent Claim
36 words
The apparatus of claim 4 wherein the image of said targets in said composite picture is shifted a distance proportional to and in a direction opposite to the shift of said selected part of said background.
References Cited (Backward Citations)
US3517121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |