USH996H
Expired / Lapsed
US
⏱️ 0.0 years remaining
High resolution page image display system
Assignee: Recognition Equipment Inc
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Filing: 1988-08-16
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Granted: 1991-11-05
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Expires: 2008-08-16
Abstract
Abstract A page image display system (10) is provided for converting high resolution digitized raster scan data of an image to a lower resolution for display on a cathode ray tube display (38) is provided. The system (10) includes circuitry (26, 28, 32) for extracting a selected group of black/white picture elements from the raster scan data. The selected group of picture elements is applied to a lookup table (34) for converting the black/white picture elements to a single gray level picture element for display on the cathode ray tube display (38).
Inventors
- 👤 Lynn D. McWaters
- 👤 Kenneth T. Lovelady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:44
CPC Classifications
G; G06; G06T; G06T3/00; G06T3/40; G06T3/4023; G09; G09G; G09G5/00; G09G5/36; G09G5/39; G09G5/391; H; H04; H04N; H04N1/00; H04N1/40
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
127 words
An image processing system for converting high resolution rasterized black/white picture element scan data of an image to a lower resolution multi-level gray value for display on a cathode ray tube comprising: means for extracting a selected group of black/white picture elements from the rasterized scan data; and means for converting said selected group of black/white picture elements to a variable brightness single gray level picture element for display on the cathode ray tube, the displayed gray level of said picture element being preselected based upon the number of occurrences of a black or a white picture element in said selected group to thereby reduce the number of picture elements displayed on the cathode ray tube while displaying the image at its actual size in gray level.
Claim 2
Dependent Claim
127 words
An image processing system for converting high resolution rasterized black/white picture element scan data of an image to a lower resolution multi-level gray value for display on a cathode ray tube comprising: means for extracting a selected group of black/white picture elements from the rasterized scan data; and means for converting said selected group of black/white picture elements to a variable brightness single gray level picture element for display on the cathode ray tube, the displayed gray level of said picture element being preselected based upon the number of occurrences of a black or a white picture element in said selected group to thereby reduce the number of picture elements displayed on the cathode ray tube while displaying the image at its actual size in gray level.
Claim 3
Dependent Claim
24 words
The image processing system of claim 1 wherein said selected group comprises a matrix of two picture elements wide and two picture elements tall.
Claim 4
Dependent Claim
24 words
The image processing system of claim 1 wherein said selected group comprises a matrix of three picture elements wide and two picture elements tall.
Claim 5
Dependent Claim
111 words
The image processing system of claim 1 wherein the selected group of picture elements includes four picture elements and if none or one of the picture elements of the group is black, a white picture element is displayed on the cathode ray tube; and if two picture elements of the group are black, a light gray picture element is displayed on the cathode ray tube; and if three picture elements of the group are black, a dark gray picture element is displayed on the cathode ray tube; and if all four of the picture elements of the group are black, a black picture element is displayed on the cathode ray tube.
Claim 6
Dependent Claim
112 words
The image processing system of claim 1 wherein the selected group of picture elements includes six picture elements and if none or one of the group are black, a white picture element is displayed on the cathode ray tube; and if two picture elements of the group are black, a light gray picture element is displayed on the cathode ray tube; and if three or four of the picture elements of the group are black, a dark gray picture element is displayed on the cathode ray tube; and if five or six of the picture elements of the group are black, a black picture element is displayed on the cathode ray tube.
References Cited (Backward Citations)
US3197558A
Cited
US3324237A
Cited
US3373437A
Cited
US3474192A
Cited
US3681650A
Cited
US3604846A
Cited
US3681605A
Cited
US3928718A
Cited
US4084259A
Cited
US4032978A
Cited
US3977007A
Cited
US4032977A
Cited
US4124870A
Cited
US4210936A
Cited
US4342051A
Cited
US4280144A
Cited
US4447831A
Cited
US4528693A
Cited
US4532651A
Cited
US4682869A
Cited
US4599656A
Cited
US4658246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-04 | 1995-05-06 | 1995-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-04 | 1999-05-06 | 1999-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-04 | 2003-05-06 | 2003-11-05 | $7700.00 | Window Closed / Lapsed |