US3697675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereoscopic television system
Assignee: Individual
•
Filing: 1970-12-23
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Granted: 1972-10-10
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Expires: 1990-12-23
Abstract
Abstract A method and apparatus for broadcasting stereoscopic images via a conventional color television system. A pair of monochrome TV cameras are situated to view the same scene from two separated positions. Stereoplex interface circuitry disclosed herein converts outputs from these cameras to luminance and chrominance signals which are supplied to a color television transmitter. A composite color signal is broadcast which produces on a color TV receiver two spaced images, each of a different color. When viewed through glasses having image-colored lenses, a threedimensional scene is perceived. On a black and white receiver, only a single image is produced.
Inventors
- 👤 Terry D Beard
- 👤 Eric R Garen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:47
CPC Classifications
H; H04; H04N; H04N13/00; H04N13/30; H04N13/332; H04N13/334
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
126 words
A system for broadcasting stereoscopic images via a conventional color television, comprising: first and second television cameras situated to view the same scene from two separated positions, and stereoplexer means for combining the outputs from said cameras into luminance and I and Q chrominance signals for input to a conventional color television transmitter, the resultant complex color signal broadcast by said transmitter producing on a monochrome television receiver an image corresponding to the scene as viewed by only one of said cameras, and producing on a conventional color TV receiver a first image of only a first kinescope primary color and a second image of only a different, second primary color, said images corresponding respectively to the scene as viewed by said first and second cameras.
Claim 2
Independent Claim
126 words
A system for broadcasting stereoscopic images via a conventional color television, comprising: first and second television cameras situated to view the same scene from two separated positions, and stereoplexer means for combining the outputs from said cameras into luminance and I and Q chrominance signals for input to a conventional color television transmitter, the resultant complex color signal broadcast by said transmitter producing on a monochrome television receiver an image corresponding to the scene as viewed by only one of said cameras, and producing on a conventional color TV receiver a first image of only a first kinescope primary color and a second image of only a different, second primary color, said images corresponding respectively to the scene as viewed by said first and second cameras.
Claim 3
Dependent Claim
44 words
A stereoscopic television system as defined in claim 1 further comprising: a pair of viewer glasses having first and second monochrome filter lenses corresponding respectively to said first and second colors, a viewer wearing said glasses to watch said images perceiving a stereoscopic scene.
Claim 4
Dependent Claim
56 words
A stereoscopic television system as defined in claim 2 wherein said I and Q chrominance signals each comprise sums of the outputs of said cameras weighted to compensate for the relative composition values said first and second colors in a black and white television image, whereby said first and second images are of effectively equal brightness.
Claim 5
Dependent Claim
40 words
A stereoscopic television system as deFined in claim 3 wherein said sums further are weighted to compensate for differences in transmissivity of said monochrome filters, thereby producing first and second images of equal perceived brightness when viewed through said glasses.
Claim 6
Dependent Claim
59 words
A stereoscopic television system as defined in claim 1 wherein said stereoplexer means comprises a first weighted adder and a first bandpass amplifier accepting said monochrome camera outputs and providing said luminance signal, and second and third weighted adders each accepting said camera outputs and providing via respective second and third bandpass amplifiers said I and Q chrominance signals.
Claim 7
Dependent Claim
33 words
A stereoscopic television system as defined in claim 5 wherein said luminance and chrominance signals are provided to a conventional color television transmitter in place of the outputs of a conventional color camera.
Claim 8
Dependent Claim
23 words
A stereoscopic television system as defined in claim 1 wherein said luminance signal comprises only the weighted output from one of said cameras.
Claim 9
Independent Claim
123 words
A system for color television broadcasting of stereoscopic images comprising: first and second television signal sources representing the same scene as viewed from two separated positions, stereoplex interface circuitry accepting outputs E1 and E2 respectively from said sources and producing in response thereto a luminance signal EY and chrominance signals EI and EQ for modulating a conventional color television transmitter, said luminance signal comprising the weighted output of only one of said sources, said chrominance signals comprising sums of said outputs weighted to produce on a conventional color receiver a first image of only one kinescope primary color and a second image of only another kinescope primary color, said images corresponding respectively to the scene as viewed by said first and second sources.
Claim 10
Independent Claim
123 words
A system for color television broadcasting of stereoscopic images comprising: first and second television signal sources representing the same scene as viewed from two separated positions, stereoplex interface circuitry accepting outputs E1 and E2 respectively from said sources and producing in response thereto a luminance signal EY and chrominance signals EI and EQ for modulating a conventional color television transmitter, said luminance signal comprising the weighted output of only one of said sources, said chrominance signals comprising sums of said outputs weighted to produce on a conventional color receiver a first image of only one kinescope primary color and a second image of only another kinescope primary color, said images corresponding respectively to the scene as viewed by said first and second sources.
Claim 11
Dependent Claim
21 words
A stereoscopic television system as defined in claim 8 wherein said first image is red and said second image is green.
Claim 12
Dependent Claim
27 words
A stereoscopic television system as defined in claim 9 wherein said EY, EI and EQ signals are given by the following equations:EY E2EI 1.15E1 -1.04E2 EQ 0.5E1
Claim 13
Independent Claim
115 words
A method for broadcasting stereoscopic images via a conventional color television system, comprising: generating a pair of video signals corresponding to a scene viewed from two separated positions; utilizing only one of said video signals to provide a luminance signal, and combining said pair of signals to provide chrominance signals for modulating a conventional television transmitter to broadcast a composite color signal producing on a monochrome television receiver an image corresponding to the scene as viewed from one position and producing at a conventional color television receiver a first image of only one kinescope primary color and a second image of only another kinescope primary color, said images corresponding respectively to said pair of signals.
Claim 14
Independent Claim
115 words
A method for broadcasting stereoscopic images via a conventional color television system, comprising: generating a pair of video signals corresponding to a scene viewed from two separated positions; utilizing only one of said video signals to provide a luminance signal, and combining said pair of signals to provide chrominance signals for modulating a conventional television transmitter to broadcast a composite color signal producing on a monochrome television receiver an image corresponding to the scene as viewed from one position and producing at a conventional color television receiver a first image of only one kinescope primary color and a second image of only another kinescope primary color, said images corresponding respectively to said pair of signals.
Claim 15
Dependent Claim
47 words
The method for broadcasting stereoscopic images defined in claim 11 further comprising: viewing said color television receiver through a pair of glasses having first and second monochrome filter lenses corresponding respectively to the colors of said first and second images, a viewer thereby perceiving a stereoscopic scene.
Claim 16
Dependent Claim
128 words
A stereoscopic television system comprising: first and second television sources providing independent signals E1 and E2 respectively representing a scene as viewed from two separated positions, and stereoplexer circuitry for combining said signals E1 and E2 to provide a luminance signal EY and chrominance signals EI and EQ for utilization in a conventional color TV system, said luminance signal EY comprising only the signal E1 or the signal E2 but not both, said signals EI and EQ comprising combinations of the signals E1 and E2 weighted so that when applied to a conventional color TV receiver, the signal E1 will have negligible effect on one of the kinescope color signals ER, EG and EB, and the signal E2 will have negligible effect on another of the color signals.
Claim 17
Dependent Claim
128 words
A stereoscopic television system comprising: first and second television sources providing independent signals E1 and E2 respectively representing a scene as viewed from two separated positions, and stereoplexer circuitry for combining said signals E1 and E2 to provide a luminance signal EY and chrominance signals EI and EQ for utilization in a conventional color TV system, said luminance signal EY comprising only the signal E1 or the signal E2 but not both, said signals EI and EQ comprising combinations of the signals E1 and E2 weighted so that when applied to a conventional color TV receiver, the signal E1 will have negligible effect on one of the kinescope color signals ER, EG and EB, and the signal E2 will have negligible effect on another of the color signals.
Claim 18
Dependent Claim
41 words
A stereoscopic television system according to claim 13 together with means for adjusting the magnitude of the effect of the signals E1 and E2 on the respective one and other color signals to equalize the brightness of the images produced thereby.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |