Patent US3604848A successfully refreshed from Google Patents.
US3604848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Periscope breakwater synthesizer
Assignee: Individual
•
Filing: 1970-04-27
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Granted: 1971-09-14
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Expires: 1990-04-27
Abstract
Abstract Electronic means for automatically changing the illumination of the view observed through the periscope of a submarine periscope view simulator training device as the simulated depth of the periscope is changed. As an ascending periscope approaches the surface of the sea from below, the illumination of the periscope view increases at a rate related to the rate of ascent from darkness to a higher value at a position just below the surface. As the periscope breaks through the surface, full illumination is provided and the scene at the surface becomes visible. A reverse sequence is followed when a periscope descent is made. The invention provides means for simulating the changes in illumination observable in a periscope during the simulation of both ascents and descents.
Inventors
- 👤 Carl R Driskell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:30
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/06; G09B9/063
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
In an electronic periscope view simulator training device having a periscope, video information generating means, and television monitor means for presenting said video information in a view observable through said periscope, the improvement comprising: periscope height control means for simulating raising and lowering of said periscope to thereby change the depth of said periscope with respect to a surface level, means for developing a periscope height voltage proportional to the simulated height of said periscope, and means to selectively apply said periscope height voltage to said television monitor to selectively darken said television monitor an amount proportional to said simulated periscope height.
Claim 2
Dependent Claim
102 words
In an electronic periscope view simulator training device having a periscope, video information generating means, and television monitor means for presenting said video information in a view observable through said periscope, the improvement comprising: periscope height control means for simulating raising and lowering of said periscope to thereby change the depth of said periscope with respect to a surface level, means for developing a periscope height voltage proportional to the simulated height of said periscope, and means to selectively apply said periscope height voltage to said television monitor to selectively darken said television monitor an amount proportional to said simulated periscope height.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1, and including means for blocking said video information from said television monitor when said periscope height control is below a predetermined surface height.
Claim 4
Dependent Claim
48 words
The apparatus of claim 2, and including surface height control means for determining said surface height, means for developing a surface height voltage proportional to said surface height, and comparing means for comparing said surface height voltage and said periscope height voltage to thereby control said television monitor.
Claim 5
Dependent Claim
95 words
The apparatus of claim 3, and including gating means for gating said video information to said television monitor and said periscope height voltage to said monitor, means connecting said comparing means to control said gating means whereby said video information is blocked from said monitor and said periscope height voltage is gated to said monitor when said periscope height is less than said surface height, and whereby said video information is gated to said monitor and said periscope height voltage is blocked from said monitor when said periscope height is greater than said surface height.
Claim 6
Dependent Claim
83 words
The apparatus of claim 4, said gating means including a first gate for gating said video information to said monitor and a second gate for gating said periscope height voltage to said monitor, said video information generating means including a monitor blanking means, and means connecting said monitor blanking means to said second gate, whereby a monitor blanking voltage is supplied to said second gate to interrupt said periscope height voltage in order to AC couple said periscope height voltage to said monitor.
References Cited (Backward Citations)
US3258855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |