Patent EP0431774A2 successfully refreshed from Google Patents.
EP0431774A2
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EP
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Scanner with slow scan image context procesing
Assignee: Xerox Corp
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Filing: 1990-11-15
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Granted: —
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Expires: 2010-11-15
Abstract
Abstract A scanner-printer of the type that scans and prints in blocks, each block consisting of a preset number of image lines, in which the block of lines (SL n-2 to SL n+2 ) scanned by the scanning array is larger than the block of lines (SL n ) printed by a printing array so that there are provided additional image scan lines before and after each block of image lines printed, the additional image scan lines providing image context data for use in processing image signals adjacent the boundaries between blocks of image lines.
Inventors
- 👤 Paul D. Norder
- 👤 Jagdish C. Tandon
- 👤 Ying Wei Lin
- 👤 Anthony F. Calarco
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 12:41
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/19; H04N1/191; H04N1/1911; H04N2201/00; H04N2201/04; H04N2201/0402; H04N2201/0414; H04N2201/0466; H04N2201/0468
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
213 words
Scanner apparatus for enabling slow scan context image processing, comprising: a) a scanning array (80) adapted to repeatedly scan an image in segments, each of said segments being equal to a predetermined number of lines, said segments including a first block of lines (SL n ) to be processed flanked by second (SL n-2 , SL n-1 ) and third (SL n+1 , SL n+2 ) blocks of lines on each side of said first block of lines, said second block of lines (SL n-2 , SL n-1 )comprising a preset number of lines preceding said first block of lines, said third block of lines (SL n+1 , SL n+2 ) comprising a preset number of lines succeeding said first block of lines, said second and third blocks of lines providing image signal context for processing image signals adjacent the border of said first block of lines with said second and third blocks of lines; and b) array moving means (46, 52, and 76) for moving said scanning array (80) in a first direction (42) paralleling said lines and in a second direction (62) perpendicular to said first direction, said array moving means (76) moving said scanning array in said second direction in increments equal in distance to said first block of lines.
Claim 2
Dependent Claim
213 words
Scanner apparatus for enabling slow scan context image processing, comprising: a) a scanning array (80) adapted to repeatedly scan an image in segments, each of said segments being equal to a predetermined number of lines, said segments including a first block of lines (SL n ) to be processed flanked by second (SL n-2 , SL n-1 ) and third (SL n+1 , SL n+2 ) blocks of lines on each side of said first block of lines, said second block of lines (SL n-2 , SL n-1 )comprising a preset number of lines preceding said first block of lines, said third block of lines (SL n+1 , SL n+2 ) comprising a preset number of lines succeeding said first block of lines, said second and third blocks of lines providing image signal context for processing image signals adjacent the border of said first block of lines with said second and third blocks of lines; and b) array moving means (46, 52, and 76) for moving said scanning array (80) in a first direction (42) paralleling said lines and in a second direction (62) perpendicular to said first direction, said array moving means (76) moving said scanning array in said second direction in increments equal in distance to said first block of lines.
Claim 3
Dependent Claim
25 words
The apparatus according to claim 1 in which the number of lines in said second and third blocks of lines are equal to one another.
Claim 4
Dependent Claim
46 words
A scanner-printer including a scanner apparatus according to claim 1 or claim 2, and including a printing array (90) for printing a preset number of lines on a copy substrate using said image signals, the printing array being mounted for movement with said scanning array (80).
References Cited (Backward Citations)
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