US4667247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for checking the quality of composings for printing products, in particular newspapers
Assignee: Adobe Inc
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Filing: 1984-07-27
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Granted: 1987-05-19
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Expires: 2004-07-27
Abstract
Abstract Record quality of a bit map of a newspaper page, for example, is checked directly on a display screen without previously manufacturing a material image carrier, such as a film. For this purpose, it is read out in multi-line fashion, preferably in 4 - line fashion. Squares consisting of m (preferably likewise 4) successive points of n (preferably 4) superimposed lines are grouped into one "superpixel" each, and its gray value, for example, is determined as an average of the black-white values of the individual pixels forming the square. The superpixel is displayed with its gray value as a single point on the display screen instead of the m×n square.
Inventors
- 👤 Peter Karow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:09
CPC Classifications
B; B41; B41B; B41B27/00; G; G09; G09G; G09G5/00; G09G5/36; G09G5/39; G09G5/391
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
160 words
An apparatus for checking record quality of a printing product to be formed from individual pixels, comprising: a composition computer means for forming a bit map to be used in creating a printing product; a memory means for storing the bit map; computer means for receiving a plurality of successive lines during a read-out of the bit map and for forming successive groups, the groups being formed of a plurality of successive pixels in each of a plurality of successive lines, and said computer means calculating a gray value by averaging pixel values of each group; video display means; and means for feeding the computed gray values together with positional information for each of the successive groups to the video display means for displaying on a monitor, whereby information contained in the original bit map is displayed with a number of picture elements which is substantially less than a number of pixels in the corresponding portion of the bit map.
Claim 2
Independent Claim
160 words
An apparatus for checking record quality of a printing product to be formed from individual pixels, comprising: a composition computer means for forming a bit map to be used in creating a printing product; a memory means for storing the bit map; computer means for receiving a plurality of successive lines during a read-out of the bit map and for forming successive groups, the groups being formed of a plurality of successive pixels in each of a plurality of successive lines, and said computer means calculating a gray value by averaging pixel values of each group; video display means; and means for feeding the computed gray values together with positional information for each of the successive groups to the video display means for displaying on a monitor, whereby information contained in the original bit map is displayed with a number of picture elements which is substantially less than a number of pixels in the corresponding portion of the bit map.
Claim 3
Dependent Claim
14 words
An apparatus according to claim 1 wherein the computer means comprises a partial-byte computer.
Claim 4
Dependent Claim
25 words
An apparatus according to claim 1 wherein a partial-byte memory is provided connected to said computer means and which outputs to said video display means.
Claim 5
Dependent Claim
31 words
An apparatus according to claim 1 wherein the computer means comprises a half byte computer and which connects to a half byte memory in turn connected to the video display means.
Claim 6
Dependent Claim
21 words
An apparatus according to claim 1 wherein the video display means has a band width of at least 64×10 6 half-bytes/sec.
Claim 7
Dependent Claim
52 words
An apparatus according to claim 1 wherein said computer means comprises a partial byte computer and which connects to a partial byte memory, and wherein a selector means is provided between the partial byte memory and the video display means for selecting individual partial bytes from a packet of several partial bytes.
Claim 8
Dependent Claim
16 words
An apparatus according to claim 6 wherein the selector means is a 1 of 8 selector.
Claim 9
Dependent Claim
38 words
An apparatus according to claim 1 wherein between the computer means and video display means, a two-way RAM memory is provided which provides a multiple block interlating or nesting of the gray values associated with the successive groups.
Claim 10
Dependent Claim
16 words
An apparatus according to claim 8 wherein the RAM-two-way memory contains four interlaced or nested blocks.
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) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |