Patent US4974070A successfully refreshed from Google Patents.
US4974070A
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US
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Colorgraphic reproduction system
Assignee: iCad Inc
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Filing: 1989-04-20
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Granted: 1990-11-27
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Expires: 2009-04-20
Abstract
Abstract A color reproduction controller accesses corrected color values for driving an output color reproduction device by forming, for each color value of each pixel to be reproduced, a data pointer comprising a first word portion of a first color value and second and third word portions of second and third color values, the second and third word portions being smaller than the first word portion. The resultant words are smaller than those of the combined length of the color values from which they are formed and result in significantly smaller memory space.
Inventors
- 👤 Allan G. Hock
- 👤 Peter A. Supry
- 👤 Alvin D. Scholten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:57
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/64; H04N1/648
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
210 words
A color reproduction controller, comprising: A. a first set of memory storage elements for receiving a plurality of data words indicative of a corresponding plurality of detected color values in an input source element, B. a second set of memory storage elements, each of length greater than any of said first set of memory storage elements but less than that of the combined length of the memory elements of said first set of elements, C. sequence control means generating first and second transfer signals for each pixel being scanned, D. first gating means responsive to said first transfer signal for loading the memory elements of said first memory element set with respective data words corresponding to selected colors to be reproduced, E. second gating means responsive to said second transfer signal for loading the respective memory elements of said second set of memory elements with a first portion of a data word from one of the memory elements of the first memory element set and second and third portions, smaller than said first portion, of the remaining memory elements of said first set, and F. means responsive to the data words of said second set of memory elements for retrieving converted color values for driving an output color reproduction device.
Claim 2
Dependent Claim
210 words
A color reproduction controller, comprising: A. a first set of memory storage elements for receiving a plurality of data words indicative of a corresponding plurality of detected color values in an input source element, B. a second set of memory storage elements, each of length greater than any of said first set of memory storage elements but less than that of the combined length of the memory elements of said first set of elements, C. sequence control means generating first and second transfer signals for each pixel being scanned, D. first gating means responsive to said first transfer signal for loading the memory elements of said first memory element set with respective data words corresponding to selected colors to be reproduced, E. second gating means responsive to said second transfer signal for loading the respective memory elements of said second set of memory elements with a first portion of a data word from one of the memory elements of the first memory element set and second and third portions, smaller than said first portion, of the remaining memory elements of said first set, and F. means responsive to the data words of said second set of memory elements for retrieving converted color values for driving an output color reproduction device.
Claim 3
Dependent Claim
55 words
A color reproduction controller according to claim 1 in which the memory elements of said second set of memory elements are arranged to receive, for each color, a composite data word that includes a larger portion of the data word corresponding to that color than that of any data word corresponding to any other color.
Claim 4
Dependent Claim
54 words
A color reproduction controller according to claim 2 in which the memory elements of said second set of memory elements are arranged to receive, for each color, a composite data word comprising substantially the entire data word corresponding to that color, and less than the entire data word corresponding to each other detected color.
Claim 5
Dependent Claim
51 words
A color reproduction controller according to claim 3 in which the memory elements of said second set of memory elements comprise for each color, a storage register for receiving substantially the entire data word corresponding to that color, as well as portions of the data words corresponding to said other colors.
Claim 6
Dependent Claim
53 words
A color reproduction controller according to claim 4 in which said data words include high-order and low-order portions, and in which each said storage register is connected to receive the high order portion of one of said data words and the low order portion of each of the other of said data words.
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) | 1993-11-26 | 1994-05-28 | 1994-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-26 | 1998-05-28 | 1998-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-26 | 2002-05-28 | 2002-11-27 | $7700.00 | Window Closed / Lapsed |