US3591268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for optically recording color picture information
Assignee: CBS Broadcasting Inc
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Filing: 1968-04-12
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Granted: 1971-07-06
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Expires: 1988-04-12
Abstract
Abstract A method and apparatus for recording as a video signal color picture information for reproduction by television scanning techniques, in which a photographic film is exposed with an image of an original scene in one frame area of the film, and in another frame area with the same image as modified by a banded color filter and objective lens. The latter image passes through a cylindrically lenticular screen close to and in front of the image plane of the objective lens to form bands of colored light in a repeating pattern interrupted by unilluminated bands of one color. Exposure of the film by the banded color pattern results in a record approximating a record of a carrier signal which is modulated in amplitude and phase according to the color saturation and hue of the original scene. The unilluminated bands form on the film a record of a pilot carrier signal at one-half the frequency of the color carrier signal.
Inventors
- 👤 Denis Manktelow Neale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:05
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/84; G; G03; G03B; G03B33/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
106 words
A method for recording original scenes on photosensitive material to produce images suitable for analysis by line scanning to generate electrical video signals convenient for reproduction of the scenes on a color television receiver, comprising: exposIng a first area of the material with an image of the luminance content of the scene; converting an image of the same scene into a repeating pattern of at least two bands of colored light corresponding generally to at least two colors that may be present in corresponding patterns of the scene; and exposing a separate area of the material with an image of the pattern of colored light bands.
Claim 2
Independent Claim
106 words
A method for recording original scenes on photosensitive material to produce images suitable for analysis by line scanning to generate electrical video signals convenient for reproduction of the scenes on a color television receiver, comprising: exposIng a first area of the material with an image of the luminance content of the scene; converting an image of the same scene into a repeating pattern of at least two bands of colored light corresponding generally to at least two colors that may be present in corresponding patterns of the scene; and exposing a separate area of the material with an image of the pattern of colored light bands.
Claim 3
Dependent Claim
43 words
A method as defined in claim 1 further comprising: exposing the separate area with an image of a series of unilluminated bands parallel to the colored light bands and having a pitch different than the pitch of the pattern of colored light bands.
Claim 4
Dependent Claim
20 words
A method as defined in claim 2, in which: the unilluminated bands interrupt the repeating pattern of colored light bands.
Claim 5
Dependent Claim
38 words
A method as defined in claim 1, in which: the colored light bands are of respective intensities to produce records of equal optical densities on the material, when processed, in response to white light from the original scene.
Claim 6
Dependent Claim
20 words
A method as set forth in claim 4, in which: the photographic material is panchromatically sensitized silver halide photographic film.
Claim 7
Dependent Claim
21 words
A method as defined in claim 1, in which: each repeating group of colored light bands includes three primary color bands.
Claim 8
Dependent Claim
116 words
A cinematographic camera for photographically recording on photosensitive material to produce images suitable for analysis by television scanning techniques to generate electrical video signals convenient for reproduction on a color television receiver, comprising: means for directing an image containing luminance information to expose a first area on the material; color-selective means for converting an image of the same scene into a repeating pattern of at least two bands of colored light corresponding generally to at least two colors that may be present in a corresponding pattern of the original scene; and lens means for focusing an image of the repeating pattern of colored light bands on the image plane of a separate area of the material.
Claim 9
Dependent Claim
116 words
A cinematographic camera for photographically recording on photosensitive material to produce images suitable for analysis by television scanning techniques to generate electrical video signals convenient for reproduction on a color television receiver, comprising: means for directing an image containing luminance information to expose a first area on the material; color-selective means for converting an image of the same scene into a repeating pattern of at least two bands of colored light corresponding generally to at least two colors that may be present in a corresponding pattern of the original scene; and lens means for focusing an image of the repeating pattern of colored light bands on the image plane of a separate area of the material.
Claim 10
Dependent Claim
49 words
A camera according to claim 7, in which: the color-selective means comprises a banded color filter having at least two color-selective elements; and the apparatus further comprises an objective lens in a common optical path with color filter between the original scene and the image plane of the material.
Claim 11
Dependent Claim
40 words
A camera as defined in claim 8, in which: the lens means comprises a lenticular screen closely adjacent the image plane of the material and comprised of a plurality of juxtaposed part-cylindrical lenticulations parallel to the colored light band images.
Claim 12
Dependent Claim
38 words
A camera according to claim 9, in which: the lenticular screen is located in the focal plane of the objective lens to focus each repeating pattern of colored light bands onto the separate area of the photosensitive material.
Claim 13
Dependent Claim
44 words
A camera as defined in claim 7, further comprising: means for forming in the separate frame area substantially unilluminated bands parallel to the colored light bands and having a spatial pitch that is different than the spatial pitch between successive repeating colored light bands.
Claim 14
Dependent Claim
31 words
A camera according to claim 11, in which: the last-named means comprises at least one opaque element associated with the color-selective means for periodically interrupting the pattern of colored light bands.
Claim 15
Dependent Claim
27 words
A camera according to claim 7, in which: the color-selective means comprises adjacent color filter elements selectively transmitting at least three respective parts of the visible spectrum.
Claim 16
Dependent Claim
175 words
A cinematographic camera wherein areas along a length of photosensitive film are imagewise exposed in seriatim, comprising: an objective lens; a banded filter located closely adjacent the objective lens and including elements of at least three qualities selectively transmitting or blocking the three parts of the visible spectrum; a lenticular screen disposed in the image plane of the lens and close to the film, the lenticular screen including a plurality of juxtaposed part-cylindrical lenticulations, the axes of the lenticulations being arranged parallel to the bands of said banded filter, the position of said lenticular screen and the focal length of said lenticulations being arranged to form on the photosensitive material in the image plane of the said objective lens images of said banded filter, the widths and numbers of the bands being arranged so that the lenticular screen projects upon the photosensitive material bands of colored light in a repeating pattern interrupted by unilluminated bands, said unilluminated bands being spaced at a pitch that is different than the pitch of illuminated bands of one color.
Claim 17
Dependent Claim
175 words
A cinematographic camera wherein areas along a length of photosensitive film are imagewise exposed in seriatim, comprising: an objective lens; a banded filter located closely adjacent the objective lens and including elements of at least three qualities selectively transmitting or blocking the three parts of the visible spectrum; a lenticular screen disposed in the image plane of the lens and close to the film, the lenticular screen including a plurality of juxtaposed part-cylindrical lenticulations, the axes of the lenticulations being arranged parallel to the bands of said banded filter, the position of said lenticular screen and the focal length of said lenticulations being arranged to form on the photosensitive material in the image plane of the said objective lens images of said banded filter, the widths and numbers of the bands being arranged so that the lenticular screen projects upon the photosensitive material bands of colored light in a repeating pattern interrupted by unilluminated bands, said unilluminated bands being spaced at a pitch that is different than the pitch of illuminated bands of one color.
Claim 18
Dependent Claim
28 words
A camera according to claim 14, further comprising: means for removing and placing the lenticular screen in front of the film during every alternate exposure of the film.
Claim 19
Dependent Claim
64 words
A cinematographic camera according to claim 15, further comprising: an apertured guide plate against which the film is pressed and including in a part of the aperture thereof the lenticular screen, said plate being positioned to place the lenticular screen in the path of light from the filter during alternate exposures and movable to allow light from the scene being photographed during remaining exposures.
Claim 20
Dependent Claim
54 words
A camera according to claim 16, in which: the guide plate is restrained from movement in the direction of the axis of the objective lens and is movable normal to such direction between every exposure to place the lenticular screen in the path of the light falling on the film during every alternate exposure.
Claim 21
Dependent Claim
19 words
A cinematographic camera according to claim 17, further comprising: a zoom lens located in front of the color-selective means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |