US4470075A
Expired / Lapsed
US
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Method and apparatus for recording a reproduction picture having a substantially continuous tone in a picture scanning and recording system
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1982-07-08
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Granted: 1984-09-04
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Expires: 2002-07-08
Abstract
Abstract In a picture scanning and recording system such as a color scanner wherein a reproduction picture is recorded by modulating a plurality of light beams each independently according to a picture signal by means of light modulator elements, a method and apparatus for recording a reproduction picture having a substantially continuous tone characterized by weighting each light beam in order of digit position of a digitized picture signal, and effecting exposure with a light beam resulting from optical addition of the light beams modulated according to such a digital picture signal.
Inventors
- 👤 Takeshi Yoshimoto
- 👤 Masanari Tsuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:15
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/40025; H04N1/4005; H04N1/024; H04N1/032; H04N1/036; H04N1/40037
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
In a picture scanning and recording system wherein a reproduction picture is recorded by modulating a plurality of light beams each independently according to a picture signal by means of light modulator elements, a method for recording a reproduction picture having a substantially continuous tone by weighting each light beam in order of digit position of a digitized picture signal, and effecting exposure with a light beam resulting from optical addition of the light beams modulated according to said digital picture signal.
Claim 2
Dependent Claim
82 words
In a picture scanning and recording system wherein a reproduction picture is recorded by modulating a plurality of light beams each independently according to a picture signal by means of light modulator elements, a method for recording a reproduction picture having a substantially continuous tone by weighting each light beam in order of digit position of a digitized picture signal, and effecting exposure with a light beam resulting from optical addition of the light beams modulated according to said digital picture signal.
Claim 3
Dependent Claim
60 words
A method according to claim 1, wherein each said light beam weighted in order of digit position of said digital picture signal is increased or decreased according to the difference between said digital picture signal and a digital signal corresponding to said light beam resulting from the optical addition of the light beams modulated according to said digital picture signal.
Claim 4
Dependent Claim
98 words
In a picture scanning and recording system wherein a reproduction picture is recorded by modulating a plurality of light beams each independently according to a picture signal by means of light modulator elements, an apparatus for recording a reproduction picture having a substantially continuous tone comprising means for weighting a plurality of light beams in order of digit position of a digitized picture signal, means for optically adding said light beams after modulation each independently according to said picture signal, and a slit plate for projecting the added light beam in a desired shape onto a photosensitive material.
Claim 5
Dependent Claim
98 words
In a picture scanning and recording system wherein a reproduction picture is recorded by modulating a plurality of light beams each independently according to a picture signal by means of light modulator elements, an apparatus for recording a reproduction picture having a substantially continuous tone comprising means for weighting a plurality of light beams in order of digit position of a digitized picture signal, means for optically adding said light beams after modulation each independently according to said picture signal, and a slit plate for projecting the added light beam in a desired shape onto a photosensitive material.
Claim 6
Dependent Claim
30 words
An apparatus according to claim 3, wherein said means for weighting a plurality of light beams comprises a combination of ND filters disposed in optical paths of said light beams.
Claim 7
Dependent Claim
19 words
An apparatus according to claim 3, wherein said means for optically adding the modulated light beams comprises a diffuser.
Claim 8
Dependent Claim
114 words
In a picture scanning and recording system wherein a reproduction picture is recorded by applying a plurality of high-frequency signals having different oscillation frequencies to a single acousto-optical deflector element to generate a plurality of light beams and modulating said light beams each independently according to a picture signal, an apparatus for recording a reproduction picture having a substantially continuous tone comprising means for weighting a plurality of light beams in order of digit position of a digitized picture signal, means for optically adding said light beams after modulation each independently according to said picture signal, and a slit plate for projecting the added light beam in a desired shape onto a photosensitive material.
Claim 9
Dependent Claim
114 words
In a picture scanning and recording system wherein a reproduction picture is recorded by applying a plurality of high-frequency signals having different oscillation frequencies to a single acousto-optical deflector element to generate a plurality of light beams and modulating said light beams each independently according to a picture signal, an apparatus for recording a reproduction picture having a substantially continuous tone comprising means for weighting a plurality of light beams in order of digit position of a digitized picture signal, means for optically adding said light beams after modulation each independently according to said picture signal, and a slit plate for projecting the added light beam in a desired shape onto a photosensitive material.
References Cited (Backward Citations)
US3725574A
Cited
US3727062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |