Patent US3770885A successfully refreshed from Google Patents.
US3770885A
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Color electronic periscope view simulator
Assignee: United States Department of the Navy
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Filing: 1971-10-21
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Granted: 1973-11-06
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Expires: 1991-10-21
Abstract
Abstract In a closed circuit television display portraying models maneuvering against a background, a colored scene is provided for the background from an electronic video recorder (EVR). Images of ships, planes, etc. inserted into the background are derived from the video signals of black and white cameras and are colored electronically.
Inventors
- 👤 W Curran
- 👤 J Kulik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:30
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/74; H04N9/76; G; G09; G09B; G09B9/00; G09B9/02; G09B9/06; G09B9/063
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
194 words
In a training device wherein a televised composite picture comprising a background image and a foreground image is displayed on a television monitor, the improvement comprising background video means for producing a background video signal, foreground video means for producing a black and white foreground video signal, synthesizer means for combining said background video signal and said foreground video signal to produce a combined video signal, means for applying said combined video signal to said television monitor to produce said composite picture, coloring means for modifying said foreground video signal to change said foreground image from black and white to color, said coloring means comprising a color processing circuit and a color information circuit, and means connecting said foreground video means to said color processing circuit for supplying said foreground video signal to said color processing circuit, said color processing circuit being responsive to said color information circuit to modify said foreground video signal, said color information circuit comprising a first variable voltage generator for generating a first color signal Q of selected magnitude and polarity and a second variable voltage generator for generating a second color signal I of selected magnitude and polarity.
Claim 2
Dependent Claim
194 words
In a training device wherein a televised composite picture comprising a background image and a foreground image is displayed on a television monitor, the improvement comprising background video means for producing a background video signal, foreground video means for producing a black and white foreground video signal, synthesizer means for combining said background video signal and said foreground video signal to produce a combined video signal, means for applying said combined video signal to said television monitor to produce said composite picture, coloring means for modifying said foreground video signal to change said foreground image from black and white to color, said coloring means comprising a color processing circuit and a color information circuit, and means connecting said foreground video means to said color processing circuit for supplying said foreground video signal to said color processing circuit, said color processing circuit being responsive to said color information circuit to modify said foreground video signal, said color information circuit comprising a first variable voltage generator for generating a first color signal Q of selected magnitude and polarity and a second variable voltage generator for generating a second color signal I of selected magnitude and polarity.
Claim 3
Dependent Claim
89 words
The apparatus of claim 1, said color processing circuit comprising: an oscillator, a phase shifter for shifting the output frequency of said oscillator, a first modulator connected to modulate the phase shifted output frequency of said oscillator with the color signal Q, a second modulator connected to modulate the output frequency of said oscillator with said color signal I, means for combining the output signals from said modulators to obtain a chrominance signal C, and an adder circuit for adding said chrominance signal C to said foreground video signal.
References Cited (Backward Citations)
US3588322A
Cited
US3595987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |