US5075768A
Expired / Lapsed
US
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Method and apparatus for color separation scanning
Assignee: Itek Colour Graphics Ltd
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Filing: 1991-02-15
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Granted: 1991-12-24
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Expires: 2011-02-15
Abstract
Abstract A method and apparatus for color separation scanning wherein a workpiece is movably supported and scanned by a linear detector. At least one color filter is interposed in the optical path between the workpiece and the linear detector and multiple scans are taken of a linear portion of the workpiece. The data obtained from multiple scans are averaged and stored in memory. A second memory may be provided to accept data input during a scan of a subsequent portion of the workpiece while the data in the first memory is output to a print device.
Inventors
- 👤 John S. Wirtz
- 👤 Peter J. Neilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:42
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/32358; H04N1/32443; H04N1/40; H04N1/409; H04N2201/00; H04N2201/32; H04N2201/3285; H04N2201/329; H04N2201/3294
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
77 words
A data input apparatus for a color separation scanner, comprising (a) a continuously movable support for a workpiece; (b) a linear detector adapted to scan individual pixels across a linear portion of said workpiece; (c) means for interposing at least one color filter between said workpiece and said linear detector; (d) means for averaging individual pixel data received from multiple successive scans of said workpiece by said linear detector; and (e) means for storing said averaged data.
Claim 2
Dependent Claim
77 words
A data input apparatus for a color separation scanner, comprising (a) a continuously movable support for a workpiece; (b) a linear detector adapted to scan individual pixels across a linear portion of said workpiece; (c) means for interposing at least one color filter between said workpiece and said linear detector; (d) means for averaging individual pixel data received from multiple successive scans of said workpiece by said linear detector; and (e) means for storing said averaged data.
Claim 3
Dependent Claim
16 words
The data input apparatus according to claim 1, wherein said movable support comprises a scanning table.
Claim 4
Dependent Claim
16 words
The data input apparatus according to claim 1, wherein said linear detector comprises a charge-coupled device.
Claim 5
Dependent Claim
22 words
The data input apparatus according to claim 1, wherein said means for interposing at least one color filter comprises a filter wheel.
Claim 6
Dependent Claim
26 words
The data input apparatus according to claim 1, wherein said at least one color filter comprises at least one set of red, green and blue filters.
Claim 7
Dependent Claim
29 words
The data input apparatus according to claim 5, wherein said at least one set of red, green, and blue filters comprises four sets of red, green and blue filters.
Claim 8
Dependent Claim
26 words
The data input apparatus according to claim 6 wherein said means for averaging data is adapted to average data from corresponding red, green and blue filters.
Claim 9
Dependent Claim
29 words
The data input apparatus according to claim 1 wherein said means for averaging the data received from multiple scans of the workpiece comprises an adder for summing the data.
Claim 10
Dependent Claim
21 words
The data input apparatus according to claim 1, wherein said means for storing said averaged data comprises a random access memory.
Claim 11
Dependent Claim
73 words
A data input method for a color separation scanner, comprising the steps of: (a) continuously movable supporting a workpiece; (b) scanning individual pixels across a linear portion of said workpiece with a linear detector; (c) interposing at least one color filter between said workpiece and said linear detector; (d) averaging individual pixel data received from multiple successive scanning of said workpiece with said linear detector; and (e) storing said averaged individual pixel data.
Claim 12
Dependent Claim
73 words
A data input method for a color separation scanner, comprising the steps of: (a) continuously movable supporting a workpiece; (b) scanning individual pixels across a linear portion of said workpiece with a linear detector; (c) interposing at least one color filter between said workpiece and said linear detector; (d) averaging individual pixel data received from multiple successive scanning of said workpiece with said linear detector; and (e) storing said averaged individual pixel data.
Claim 13
Dependent Claim
30 words
The data input method according to claim 10, wherein said step of interposing at least one color filter comprises rotatably interposing at least one color filter using a filter wheel.
Claim 14
Dependent Claim
28 words
The data input method according to claim 10, wherein said step of interposing at least one color filter comprises interposing at least one red, green and blue filter.
Claim 15
Dependent Claim
29 words
The data input method according to claim 12, wherein the step of interposing at least one red, green, and blue filter comprises interposing four red, green and blue filters.
Claim 16
Dependent Claim
24 words
The data input method according to claim 13, wherein said step of averaging data includes averaging data from corresponding red, green, and blue filters.
Claim 17
Dependent Claim
26 words
The data input method according to claim 10, wherein said step of averaging data obtained from multiple scanning said workpiece comprises summing data for each color.
Claim 18
Dependent Claim
113 words
A color separation scanner, comprising: (a) a continuously movable support for a workpiece; (b) a linear detector for scanning a linear portion of said workpiece; (c) means for interposing at least one color filter between said workpiece and said linear detector; (d) first storage means for storing data from said linear detector; (e) second storage means for storing data from said linear detector; (f) switching means for switching between said first storage means and said second storage means; (g) a continuously movable support for photosensitive material; and (h) means for printing said stored data on said photosensitive material, wherein said printing means travels in conjunction with said continuously movable support for said workpiece.
Claim 19
Dependent Claim
113 words
A color separation scanner, comprising: (a) a continuously movable support for a workpiece; (b) a linear detector for scanning a linear portion of said workpiece; (c) means for interposing at least one color filter between said workpiece and said linear detector; (d) first storage means for storing data from said linear detector; (e) second storage means for storing data from said linear detector; (f) switching means for switching between said first storage means and said second storage means; (g) a continuously movable support for photosensitive material; and (h) means for printing said stored data on said photosensitive material, wherein said printing means travels in conjunction with said continuously movable support for said workpiece.
Claim 20
Dependent Claim
18 words
The color separation scanner of claim 16, wherein said movable support for a workpiece comprises a scanning table.
Claim 21
Dependent Claim
15 words
The color separation scanner of claim 16, wherein said linear detector comprises a charge-coupled device.
Claim 22
Dependent Claim
22 words
The color separation scanner according to claim 16, wherein said means for interposing at least one color filter comprises a filter wheel.
Claim 23
Dependent Claim
26 words
The color separation scanner according to claim 16, wherein said at least one color filter comprises at least one set of red, green and blue filters.
Claim 24
Dependent Claim
29 words
The color separation scanner according to claim 17, wherein said at least one set of red, green, and blue filters comprises four sets of red, green and blue filters.
Claim 25
Dependent Claim
22 words
The color separation scanner according to claim 16, further comprising means for averaging the data received from multiple scans of the workpiece.
Claim 26
Dependent Claim
23 words
The color separation scanner according to claim 16, wherein said first and second storage means for storing said data comprises random access memory.
Claim 27
Independent Claim
91 words
A method of color separation scanning, comprising the steps of: (a) movably supporting a workpiece; (b) scanning a linear portion of said workpiece with a linear detector; (c) interposing at least one color filter between said workpiece and said linear detector; (d) storing data obtained from said scan in a first storage means (e) switching the storage of data to a second storage means at the completion of a scan; (f) outputting data from the first storage means to be printed while data is being stored in said first storage means.
Claim 28
Independent Claim
91 words
A method of color separation scanning, comprising the steps of: (a) movably supporting a workpiece; (b) scanning a linear portion of said workpiece with a linear detector; (c) interposing at least one color filter between said workpiece and said linear detector; (d) storing data obtained from said scan in a first storage means (e) switching the storage of data to a second storage means at the completion of a scan; (f) outputting data from the first storage means to be printed while data is being stored in said first storage means.
Claim 29
Dependent Claim
32 words
The method of color separation scanning according to claim 24, wherein said step of interposing at least one color filter comprises rotatably interposing at least one color filter using a filter wheel.
Claim 30
Dependent Claim
30 words
The method of color separation scanning according to claim 24, wherein said step of interposing at least one color filter comprises interposing at least one red, green and blue filter.
Claim 31
Dependent Claim
31 words
The method of color separation scanning according to claim 26, wherein the step of interposing at least one red, green, and blue filter comprises interposing four red, green and blue filters.
Claim 32
Dependent Claim
29 words
The method of color separation scanning according to claim 24, wherein said step of averaging data obtained from multiple scanning said workpiece comprises summing data values for each color.
Claim 33
Dependent Claim
28 words
The color separation scanner according to claim 22, wherein said means for averaging the data received from multiple scans of the workpiece comprises an adder for summing data.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |