US4371260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for setting up highlight and shadow point density values of original pictures to a picture reproducing machine
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1981-03-05
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Granted: 1983-02-01
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Expires: 2001-03-05
Abstract
Abstract A method for setting up density values of highlight and shadow points of original pictures to a picture reproducing machine such as a color scanner and a color facsimile, wherein one of the original pictures now being scanned is discriminated to output a discrimination signal, and wherein the highlight and the shadow point density values or values corresponding to a density range of the one original picture are read out of a memory in which the highlight and the shadow point density values or the values corresponding to the density ranges of the original pictures are stored, by addressing the memory by means of the discrimination signal, and then are set up to the picture reproducing machine.
Inventors
- 👤 Takeshi Yoshimoto
- 👤 Hideki Hiraoka
- 👤 Seiji Okazaki
- 👤 Yoshihiro Taniguchi
- 👤 Tsutomu Harada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:46
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6027; H04N1/40; H04N1/407; H04N1/4072
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
A method for setting density values of highlight and shadow points of original pictures in a picture reproducing machine, comprising the steps of: (a) scanning an original picture while producing a discrimination signal responsive to the scanning of said original picture; (b) reading highlight and shadow point density values or values corresponding to a density range of said original picture from a memory in which the highlight and the shadow point density values or the values corresponding to the density ranges of original pictures are stored, by addressing the memory by means of said discrimination signal; and (c) setting the values read from the memory in the picture reproducing machine.
Claim 2
Independent Claim
110 words
A method for setting density values of highlight and shadow points of original pictures in a picture reproducing machine, comprising the steps of: (a) scanning an original picture while producing a discrimination signal responsive to the scanning of said original picture; (b) reading highlight and shadow point density values or values corresponding to a density range of said original picture from a memory in which the highlight and the shadow point density values or the values corresponding to the density ranges of original pictures are stored, by addressing the memory by means of said discrimination signal; and (c) setting the values read from the memory in the picture reproducing machine.
Claim 3
Dependent Claim
45 words
A method as defined in claim 1, comprising detecting the highlight and the shadow point density values or the values corresponding to the density ranges of the original picture with a densitometer and applying the output values from the densitometer to a memory coupled thereto.
Claim 4
Dependent Claim
36 words
A method as defined in claim 1 or 2, further comprising storing the highlight and the shadow point density values or the values corresponding to the density ranges of the original picture in a buffer memory.
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) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |