Patent US3671666A successfully refreshed from Google Patents.
US3671666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing corrected photographic color rastered reproductions
Assignee: RUDOLF HELL KG
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Filing: 1969-02-18
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Granted: 1972-06-20
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Expires: 1989-02-18
Abstract
Abstract A method and apparatus for producing a color corrected and rastered reproduction wherein a continuous tone picture is photoelectrically scanned and combined with the output of a second scanning head which scans a raster pattern to be superimposed over the picture and the outputs of the two heads are combined and applied to a recording head through a threshold circuit. A cathode ray tube is provided for allowing the method to be monitored so as to assure that the proper reproduction is occurring.
Inventors
- 👤 Eberhard Hennig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:29
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/405; H04N1/4055
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
156 words
Means for reproducing a rastered picture from a continuous tone picture comprising: a first driving means; three drums driven by said first driving means; a first scannIng head in scanning relation to the first drum and the continuous tone picture mounted thereon and producing an electrical output; a second scanning head mounted in scanning relationship to the second drum and a raster pattern mounted on said second drum and said second scanning head producing an electrical output; means for mixing the electrical outputs of said first and second scanning heads for effectively masking the image; a recording head reproducing an image mounted in scanning relationship to the third drum and receiving the output of said mixing means and converting said output to an image; a recording medium mounted on the third drum; and, a second driving means connected to the first and second scanning heads and the recording head to move them relative to the drums.
Claim 2
Dependent Claim
156 words
Means for reproducing a rastered picture from a continuous tone picture comprising: a first driving means; three drums driven by said first driving means; a first scannIng head in scanning relation to the first drum and the continuous tone picture mounted thereon and producing an electrical output; a second scanning head mounted in scanning relationship to the second drum and a raster pattern mounted on said second drum and said second scanning head producing an electrical output; means for mixing the electrical outputs of said first and second scanning heads for effectively masking the image; a recording head reproducing an image mounted in scanning relationship to the third drum and receiving the output of said mixing means and converting said output to an image; a recording medium mounted on the third drum; and, a second driving means connected to the first and second scanning heads and the recording head to move them relative to the drums.
Claim 3
Dependent Claim
22 words
Means for reproducing a rastered picture according to claim 1 comprising a threshold circuit between said mixing means and the recording head.
Claim 4
Dependent Claim
26 words
Means for reproducing a rastered picture according to claim 2 comprising a cathode ray tube monitor connected to said threshold circuit and producing said rastered picture.
Claim 5
Dependent Claim
33 words
Means for reproducing a rastered picture according to claim 3 comprising means for horizontally and vertically scanning the beam of said cathode ray tube and synchronizing it with the drums and scanning heads.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |