EP1005224A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Image processing method and image processor using the same
Assignee: Seiko Epson Corp
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Filing: 1999-10-25
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Granted: —
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Expires: 2019-10-25
Abstract
Abstract An interface section analyzes print data including data for identifying an object or data showing the setting of color processing and others and sets required color processing in units of a printed page. According to the set color processing, a color processing section sets corresponding color correction table and halftoning processing table in a high speed random access memory for example. The interface supplies a drawing instruction together with attribute data corresponding to the setting in the color processing section to a drawing section. The drawing section plots image data composed of color data every dot according to the drawing instruction and stores the drawing instruction together with the attribute data every dot in an image memory. The color processing section executes optimum or intended color processing for color data in the image memory, referring to a color correction table and a halftoning processing table respectively corresponding to its attribute data and generates image reproduction data. Accordingly, arbitrary color processing can be realized by a controller composed of light hardware. <IMAGE>
Inventors
- 👤 Yoshio Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 15:28
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6072
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
168 words
An image processor for performing color conversion including color
correction and halftoning of inputted print data to generate image reproduction
data which represents gradation of each color by a plurality of halftone dots,
comprising: an interface section for interpreting the print data to generate a
drawing instruction, and determining required color correction processing and
halftoning processing with respect to every predetermined print unit to generate
attribute data; a drawing section for generating color data with respect to each of
the halftone dots and recording the same into an image memory together with
the attribute data; color processing section including a plurality of color correction
processing tables and halftoning processing tables, the color processing
section for selecting at least one color correction processing table and at least
one halftoning processing table out of the plural processing tables in
accordance with the attribute data to execute the color correction and the
halftoning with respect to the respective color data in the image memory in
accordance with the selected processing tables.
Claim 2
Dependent Claim
54 words
The image processor as set forth in claim 1, wherein the interface
section generates a color setting information block including color
enhancement data, and wherein a color coordination table is set in the color processing
section in accordance with the color enhancement data to execute color
coordination processing with respect to the color data.
Claim 3
Dependent Claim
31 words
The image processor as set forth in claim 1, wherein the interface
section generates a color setting information block including information for
specifying the determined color correction processing and halftoning
processing.
Claim 4
Dependent Claim
53 words
The image processor as set forth in claim 1, wherein the plural color
correction processing tables and halftoning processing tables are previously
stored in a read only memory, and
wherein the color processing section includes a random access
memory in which the selected color correction processing table and halftoning
processing table are recorded.
Claim 5
Dependent Claim
23 words
The image processor as set forth in claim 1, wherein the selection of
processing tables is conducted with respect to every printed page.
Claim 6
Dependent Claim
28 words
The image processor as set forth in claim 1, wherein the
predetermined print unit is an image object including at least one of a character
and an image.
Claim 7
Dependent Claim
20 words
The image processor as set forth in claim 1, wherein the
predetermined print unit is each of the halftone dots.
Claim 8
Dependent Claim
150 words
An image processing method for performing color conversion
including color correction and halftoning of inputted print data to generate
image reproduction data which represents gradation of each color by a plurality
of halftone dots, comprising the steps of: interpreting the print data to generate a drawing instruction; determining required color correction processing and halftoning
processing with respect to every predetermined print unit to generate attribute
data; generating color data with respect to each of the halftone dots and
recording the same into an image memory together with the attribute data; selecting at least one color correction processing table and at least
one halftoning processing table out of a plurality of color correction processing
tables and halftoning processing tables in accordance with the attribute data;
and executing the color correction and the halftoning with respect to the
respective color data in the image memory in accordance with the selected
processing tables.
Claim 9
Dependent Claim
54 words
The image processing method as set forth in claim 8, further
comprising the steps of: generating a color setting information block including color
enhancement data, setting a color coordination table in accordance with the color
enhancement data; executing color coordination processing with respect to the color
data in accordance with the color coordination table.
Claim 10
Dependent Claim
47 words
The image processing method as set forth in claim 8, wherein the
plural processing tables are previously stored in a read only memory, and the
method further comprising the steps of: setting the selected color correction processing table and halftoning
processing table into a random access memory.
Claim 11
Dependent Claim
159 words
A recording medium for storing an image processing program for
performing color conversion including color correction and halftoning of inputted
print data to generate image reproduction data which represents gradation of
each color by a plurality of halftone dots, the image processing program
comprising the steps of: interpreting the print data to generate a drawing instruction; determining required color correction processing and halftoning
processing with respect to every predetermined print unit to generate attribute
data; generating color data with respect to each of the halftone dots and
recording the same into an image memory together with the attribute data; selecting at least one color correction processing table and at least
one halftoning processing table out of a plurality of color correction processing
tables and halftoning processing tables in accordance with the attribute data;
and executing the color correction and the halftoning with respect to the
respective color data in the image memory in accordance with the selected
processing tables.
References Cited (Backward Citations)
No citation records indexed.
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