Patent US1667772A successfully refreshed from Google Patents.
US4584615A
Expired / Lapsed
US
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Black and white disc construction to record color images
Assignee: 3M Co
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Filing: 1984-02-22
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Granted: 1986-04-22
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Expires: 2004-02-22
Abstract
Abstract A black and white disc construction employs a colored spatial frequency filter for encoding color images in black and white on a photographic film. Subsequently, the color images are reproduced by electronic means, e.g., a home color television set or video monitor.
Inventors
- 👤 Richard S. Fisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:27
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/84
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
110 words
A photographic disc construction having an opaque casing with an exposure window in one wall for rotatably housing (a) a disc of black and white photographic film movable about a fixed axis such that different film portions are moved successively into alignment with the exposure window, and (b) a separator layer adjacent the emulsion side of said photographic film, the improvement comprising: said separator layer being a thin, continuous, thermoplastic, polymeric layer comprising in whole or in part a transparent colored spatial frequency filter which in combination with said film provides an encoded color image in black and white on said film when said film is image-wise exposed to light.
Claim 2
Dependent Claim
110 words
A photographic disc construction having an opaque casing with an exposure window in one wall for rotatably housing (a) a disc of black and white photographic film movable about a fixed axis such that different film portions are moved successively into alignment with the exposure window, and (b) a separator layer adjacent the emulsion side of said photographic film, the improvement comprising: said separator layer being a thin, continuous, thermoplastic, polymeric layer comprising in whole or in part a transparent colored spatial frequency filter which in combination with said film provides an encoded color image in black and white on said film when said film is image-wise exposed to light.
Claim 3
Dependent Claim
34 words
The photographic disc construction according to claim 1 wherein said means for encoding color images in black and white is said separator layer comprising in whole or in part a colored spatial frequency filter.
Claim 4
Dependent Claim
31 words
The photographic disc construction according to claim 1 wherein said means for encoding color images in black and white comprises: a colored spatial frequency filter planographically positioned on said photographic film.
Claim 5
Independent Claim
137 words
A method of providing an encoded color image on black and white photographic disc film said method comprising: (a) providing a photographic disc construction having an opaque casing with an exposure window in one wall for rotatably housing (1) a disc of black and white photographic film movable about a fixed axis such that different film portions are moved successively into alignment with the exposure window, and (2) a thin, continuous, thermoplastic, polymeric separator layer adjacent the emulsion side of said photographic film, said separator layer comprising in whole or in part a transparent colored spatial frequency filter for encoding color images in black and white on said film when said film is image-wise exposed to light, and (b) encoding said color image in black and white on said film by image-wise exposing said film to light.
Claim 6
Independent Claim
137 words
A method of providing an encoded color image on black and white photographic disc film said method comprising: (a) providing a photographic disc construction having an opaque casing with an exposure window in one wall for rotatably housing (1) a disc of black and white photographic film movable about a fixed axis such that different film portions are moved successively into alignment with the exposure window, and (2) a thin, continuous, thermoplastic, polymeric separator layer adjacent the emulsion side of said photographic film, said separator layer comprising in whole or in part a transparent colored spatial frequency filter for encoding color images in black and white on said film when said film is image-wise exposed to light, and (b) encoding said color image in black and white on said film by image-wise exposing said film to light.
Claim 7
Dependent Claim
33 words
The method according to claim 4 further comprising the steps of: (c) optically reconstructing said encoded images as a signal onto photodetectors, and (d) transmitting said signal electronically to an electronic display media.
Claim 8
Dependent Claim
11 words
The method according to claim 5 for providing an electronic image.
Claim 9
Dependent Claim
27 words
The method according to claim 4 further comprising the step of: duplicating said resulting encoded color image to provide successive color reproductions of said image for distribution.
Claim 10
Dependent Claim
32 words
The method according to claim 4 wherein said means for encoding color images in black and white is said separator layer comprising in whole or in part a colored spatial frequency filter.
Claim 11
Dependent Claim
29 words
The method according to claim 4 wherein said means for encoding color images in black and white comprises a colored spatial frequency filter planographically positioned on said photographic film.
Claim 12
Dependent Claim
15 words
The method according to claim 4 for providing a photographic film encoded with color images.
References Cited (Backward Citations)
US3609010A
Cited
US3586434A
Cited
GB2027225A
Cited
US4194822A
Cited
US4268145A
Cited
US4368484A
Cited
US4386151A
Cited
USPTO Annuity & Maintenance Windows
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|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |