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US5204753A
Expired / Lapsed
US
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Multi-bit rendering method and arrangement for continuous tone picture representation and printing
Assignee: Eastman Kodak Co
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Filing: 1992-06-05
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Granted: 1993-04-20
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Expires: 2012-06-05
Abstract
Abstract A method and arrangement for reproducing an original image, scans and digitizes an original image into pixels of a digitized image. A dot template, a bit-depth, and a dot type structure are selected. A set of gray dot patterns are generated from the dot template, pixel bit-depth and dot type structure that are selected. A 4-quadrant tone reproduction on the set of gray dot patterns is then performed to produce a set of thresholding values at each pixel of the digitized image. A first signal corresponding to a gray level halftoned representation of the digitized image using the thresholding values is then produced. From the first signal, a gray level halftoned reproduction of the original image is printed.
Inventors
- 👤 Hwai-Tzuu Tai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:26
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/405; H04N1/4055; H04N1/4057; H04N1/4058
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
100 words
An arrangement for reproducing an original image, comprising: a scanner which scans and digitizes the original image into pixels; a controller coupled to the scanner to receive the digitized original image, and which produces a first signal corresponding to a gray level halftoned representation of the digitized original image; and a printer coupled to the controller to receive said first signal and which produces a gray level halftoned reproduction of the original image; wherein the controller includes means for obtaining a set of thresholding values at each pixel from a specified set of gray dot patterns by 4-quadrant tone reproduction.
Claim 2
Dependent Claim
100 words
An arrangement for reproducing an original image, comprising: a scanner which scans and digitizes the original image into pixels; a controller coupled to the scanner to receive the digitized original image, and which produces a first signal corresponding to a gray level halftoned representation of the digitized original image; and a printer coupled to the controller to receive said first signal and which produces a gray level halftoned reproduction of the original image; wherein the controller includes means for obtaining a set of thresholding values at each pixel from a specified set of gray dot patterns by 4-quadrant tone reproduction.
Claim 3
Dependent Claim
30 words
The arrangement of claim 1 wherein the controller includes means for generating said gray dot patterns that are dependent on a dot template, pixel bit-depth, and partial dot type structure.
Claim 4
Dependent Claim
15 words
The arrangement of claim 2, wherein the dot template is an optimal Bayer dot pattern.
Claim 5
Dependent Claim
14 words
The arrangement of claim 2, wherein the dot template is a cluster dot pattern.
Claim 6
Dependent Claim
12 words
The arrangement of claim 2, wherein the pixel bit-depth is 4 bits.
Claim 7
Dependent Claim
12 words
The arrangement of claim 2, wherein the pixel bit-depth is 5 bits.
Claim 8
Independent Claim
109 words
A method of reproducing an original image, comprising: scanning and digitizing an original image into pixels of a digitized image; selecting a dot template; selecting a bit-depth; selecting a dot type structure; generating a set of gray dot patterns from the dot template, pixel bit-depth and dot type structure selected; performing 4-quadrant tone reproducing on the set of gray dot patterns to produce a set of thresholding values at each pixel of the digitized image; producing a first signal corresponding to a gray level halftoned representation of the digitized image using the thresholding values; and printing from the first signal a gray level halftoned reproduction of the original image.
Claim 9
Independent Claim
109 words
A method of reproducing an original image, comprising: scanning and digitizing an original image into pixels of a digitized image; selecting a dot template; selecting a bit-depth; selecting a dot type structure; generating a set of gray dot patterns from the dot template, pixel bit-depth and dot type structure selected; performing 4-quadrant tone reproducing on the set of gray dot patterns to produce a set of thresholding values at each pixel of the digitized image; producing a first signal corresponding to a gray level halftoned representation of the digitized image using the thresholding values; and printing from the first signal a gray level halftoned reproduction of the original image.
Claim 10
Dependent Claim
21 words
The method of claim 7, wherein the dot template is one of a Bayer dot pattern or a cluster dot pattern.
Claim 11
Dependent Claim
17 words
The method of claim 7, wherein the pixel bit-depth if one of 4 bits or 5 bits.
Claim 12
Dependent Claim
16 words
The method of claim 7, wherein the dot type structure is a partial dot type structure.
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) | 1996-04-19 | 1996-10-19 | 1997-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-19 | 2000-10-19 | 2001-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-19 | 2004-10-19 | 2005-04-20 | $7700.00 | Window Closed / Lapsed |