US3813685A
Expired / Lapsed
US
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Holographic color television record system
Assignee: Holotron Corp
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Filing: 1969-12-11
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Granted: 1974-05-28
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Expires: 1989-12-11
Abstract
Abstract A method and apparatus for constructing and replaying an optical holographic record containing a plurality of very small holograms, each of which contains color information independent of the other holograms. Each piece of full color information, such as a frame of an ordinary color photographic movie, is recorded as an individual hologram. The record is a narrow, elongated flexible film with the holograms formed in a line along its length, each hologram touching those on either side thereof. One or more light sensitive detectors for converting an image into a time varying electronic signal are positioned to receive holographically reconstructed signals and transform them into a form acceptable to an ordinary color television set for displaying the color information thereon. One, two and three image detecting tube systems are disclosed. Several independent monochromatic components of a color information signal are carried on a single optical-electronic channel by modulation onto carrier frequencies either optically or electronically prior to construction of the hologram record. In a preferred embodiment described, the hologram record is constructed in a manner to reconstruct a board bandwidth luminance signal in a position spatially separated from the color component signal.
Inventors
- 👤 D John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:08
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/04; G03H1/20; G03H1/10; H; H04; H04N; H04N5/00; H04N5/76; H04N5/89
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
102 words
A method of constructing a color visual information containing hologram, comprising the steps of: separating the color visual information into a plurality of components including luminance and color component signals, recording said luminance and color component signals onto a black-and-white photosensitive material in a manner that each component is separable retrievable therefrom, wherein the step of recording includes recording said luminance component on a first area of the photosensitive material and recording said color component on a second distinct area of photosensitive material, thereby to form a color coded transparency, and constructing a hologram of said coded transparency with monochromatic coherent light.
Claim 2
Independent Claim
102 words
A method of constructing a color visual information containing hologram, comprising the steps of: separating the color visual information into a plurality of components including luminance and color component signals, recording said luminance and color component signals onto a black-and-white photosensitive material in a manner that each component is separable retrievable therefrom, wherein the step of recording includes recording said luminance component on a first area of the photosensitive material and recording said color component on a second distinct area of photosensitive material, thereby to form a color coded transparency, and constructing a hologram of said coded transparency with monochromatic coherent light.
Claim 3
Dependent Claim
43 words
The method as defined in claim 1 wherein the step of separating said color visual information into a plurality of components includes separating the information into a broad bandwith luminance component signal and a color component signal having three narrow bandwidth color signals.
Claim 4
Dependent Claim
46 words
The method as defined in claim 2 wherein the step of recording the color component signal on the second distinct area of photosensitive material includes modulating each of said three narrow bandwidth color signals onto distinct carrier frequencies prior to recordation thereof on said second area.
Claim 5
Dependent Claim
47 words
The method as defined in claim 1 wherein the color visual information is a standard FCC time varying electronic color television signal and wherein the step of recording the color component signal on the second distinct area of photosensitive material includes recording an FCC standard chrominance signal.
Claim 6
Dependent Claim
58 words
The method as defined in claim 4 wherein the color visual information FCC electronic signal includes a standard FCC chrominance signal carried on a subcarrier frequency and wherein the step of recording the color component signal on the second area of said photosensitive material includes the additional step of shirting said subcarrier frequency to a lower frequency range.
Claim 7
Dependent Claim
42 words
The method as defined in claim 5 wherein the step of recording additionally includes the step of recording on the second area of said photosensitive material a clock signal having a frequency that is an integral sub-multiple of said shifted subcarrier frequency.
Claim 8
Dependent Claim
54 words
The method of constructing a hologram record containing a plurality of distinct frames of color visual information, wherein a plurality of holograms are constructed in touching relationship with each other along an elongated hologram record, each hologram being constructed of a single frame of color visual information according to the method of claim 1.
Claim 9
Dependent Claim
45 words
The method of constructing a hologram record as defined in claim 7 wherein each individual hologram is constructed by use of a collimated off-axis reference beam incident on the hologram in a manner that its rays are perpendicular thereto in a direction along its length.
Claim 10
Independent Claim
110 words
A method of constructing a color visual information containing hologram, comprising the steps of: separating the color visual information into a plurality of components including luminance and color component signals, recording said luminance and color component signals onto a black-and-white photosensitive material, said luminance components being recorded on a first area of the photosensitive material and said color components being recorded on a second distinct area of said photosensitive material through a coherent optical data processing system containing at least one frequency plane so that each component is separably retrievable therefrom, thereby to form a color coded transparency, and constructing a hologram of said coded transparency with monochromatic coherent light.
Claim 11
Independent Claim
110 words
A method of constructing a color visual information containing hologram, comprising the steps of: separating the color visual information into a plurality of components including luminance and color component signals, recording said luminance and color component signals onto a black-and-white photosensitive material, said luminance components being recorded on a first area of the photosensitive material and said color components being recorded on a second distinct area of said photosensitive material through a coherent optical data processing system containing at least one frequency plane so that each component is separably retrievable therefrom, thereby to form a color coded transparency, and constructing a hologram of said coded transparency with monochromatic coherent light.
Claim 12
Dependent Claim
99 words
The method as defined in claim 9 wherein the color visual information includes a spatially extended two dimensional color transparency and wherein the separation of the color visual information into a color component signal having three narrow bandwidth color signals is accomplished by sequentially positioning three optical filters each of a distinct color in the path of a light beam passed through the color transparency to form three primary color signals which are then passed through an optical system having a frequency plane with an apertured spacial filter positioned coincident therewith for limiting the bandwidth of each color signal.
Claim 13
Dependent Claim
80 words
The method as defined in claim 9 wherein the step of recording the color component signal onto the second area of the photosensitive material additionally includes exposing said area to each of said narrow bandwidth color signals in an optical form sequentially in time with each being modulated onto its distinct carrier frequency by positioning a periodic intensity varying grating in the path of each signal, each of said gratings having a period distinct from each of the other gratings.
Claim 14
Dependent Claim
91 words
The method as defined in claim 9 wherein the step of recording the color component signal on the second area of the photosensitive material includes sequentially exposing said material to the three narrow bandwidth color signals in a manner to record thereon a signal of the form EI cos omega It + EQ cos omega Qt, where EI and EQ are determined by a combination of said narrow bandwidth primary color signals according to FCC standards, where omega I and omega Q are distinct carrier frequencies, and where t is time.
Claim 15
Dependent Claim
90 words
The method as defined in claim 9 wherein the step of recording the color component signal on the second area of the photosensitive material includes sequentially exposing said material to the three narrow bandwidth color signals in a manner to record thereon a signal of the form (Er - Ey) cos omega t + (Eb - Ey) sin omega t, where Er and Eb are respectively two of said narrow bandwidth color signals, where Ey is the luminance signal, where omega is a carrier frequency, and where t is time.
Claim 16
Independent Claim
151 words
A method of constructing a hologram containing one frame of color visual information, comprising the steps of: separating said color visual information into its narrow bandwidth color components, recording said components on a common area of a black-and-white photosensitive material in a manner that a replica of said color visual information may be Reconstructed therefrom, thereby to form a color coded transparency, wherein the step of recording includes exposing the common area of said photosensitive material to said narrow bandwidth color components one at a time to record a predetermined composite signal thereon, at least one exposure being made through an intensity varying grating of uniform period thereacross and a subsequent exposure being made through said grating when displaced one-half of a period thereof relative to said photosensitive material from its position during said at least one exposure, and constructing a single hologram of said color coded transparency with coherent light.
Claim 17
Independent Claim
151 words
A method of constructing a hologram containing one frame of color visual information, comprising the steps of: separating said color visual information into its narrow bandwidth color components, recording said components on a common area of a black-and-white photosensitive material in a manner that a replica of said color visual information may be Reconstructed therefrom, thereby to form a color coded transparency, wherein the step of recording includes exposing the common area of said photosensitive material to said narrow bandwidth color components one at a time to record a predetermined composite signal thereon, at least one exposure being made through an intensity varying grating of uniform period thereacross and a subsequent exposure being made through said grating when displaced one-half of a period thereof relative to said photosensitive material from its position during said at least one exposure, and constructing a single hologram of said color coded transparency with coherent light.
Claim 18
Dependent Claim
49 words
The method as defined in claim 14 wherein the narrow bandwidth color components are optically imaged onto the common area of said photosensitive material by an optical system having a frequency plane, and wherein an apertured spatial filter is positioned coincident with said plane during at least one exposure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |