US6243174B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image processing device, color printing device, image processing method and medium recording image processing program
Assignee: Seiko Epson Corp
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Filing: 1997-10-21
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Granted: 2001-06-05
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Expires: 2017-10-21
Abstract
Abstract In order to prevent an operational amount of color conversion from increasing when resolution is changed since the operational amount of color conversion is increased when the conversion is performed such that resolution is enhanced in printing, resolution of color image data constituting pre conversion data is compared with resolution of color image data constituting post conversion data. As a result of comparison, when the resolution on the input side is lower, color conversion is previously performed and resolution is converted subsequently, when the resolution on the input side is higher, resolution is converted prior to color conversion. Thus where conversion of resolution and color conversion are executed, color conversion is performed on the side having a lower one of the resolutions whereby color conversion is performed in respect of fewer pixels and the processing can be optimized.
Inventors
- 👤 Kenji Fukasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 22:25
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
141 words
An image processing device accompanied by conversion of resolution and color conversion, said device comprising: resolution comparing means for comparing a resolution of color image data constituting pre conversion data with a resolution of color image data constituting post conversion data; resolution converting means for converting the resolutions between the color image data constituting the pre conversion data and the color image data constituting the post conversion data; color converting means for performing a color conversion between a color representing space of the color image data constituting the pre conversion data and a color representing space of the color image data constituting the post conversion data; conversion order controlling means for executing the color conversion before or after converting the resolutions, on a side having a lower one of the resolutions, based on a comparison result of the resolution comparing means.
Claim 2
Dependent Claim
141 words
An image processing device accompanied by conversion of resolution and color conversion, said device comprising: resolution comparing means for comparing a resolution of color image data constituting pre conversion data with a resolution of color image data constituting post conversion data; resolution converting means for converting the resolutions between the color image data constituting the pre conversion data and the color image data constituting the post conversion data; color converting means for performing a color conversion between a color representing space of the color image data constituting the pre conversion data and a color representing space of the color image data constituting the post conversion data; conversion order controlling means for executing the color conversion before or after converting the resolutions, on a side having a lower one of the resolutions, based on a comparison result of the resolution comparing means.
Claim 3
Dependent Claim
115 words
A color printing device for printing a color image in accordance with a predetermined record density, in which raster data in accordance with the record density is formed from color image data constituting pre conversion data and a color conversion is performed from a color representing space of the color image data constituting the pre conversion data to a color representing space of a colorant for printing with the record density: wherein a resolution of the color image data constituting the pre conversion data is compared with a resolution at the record density and the color conversion is performed before or after converting the resolutions, on a side having a lower one of the resolutions.
Claim 4
Dependent Claim
115 words
A color printing device for printing a color image in accordance with a predetermined record density, in which raster data in accordance with the record density is formed from color image data constituting pre conversion data and a color conversion is performed from a color representing space of the color image data constituting the pre conversion data to a color representing space of a colorant for printing with the record density: wherein a resolution of the color image data constituting the pre conversion data is compared with a resolution at the record density and the color conversion is performed before or after converting the resolutions, on a side having a lower one of the resolutions.
Claim 5
Independent Claim
143 words
A method of image processing accompanied by conversion of resolution and color conversion, said method comprising: a step of comparing a resolution of color image data constituting pre conversion data with a resolution of color image data constituting post conversion data; a step of converting the resolutions between the color image data constituting the pre conversion data and the color image data constituting the post conversion data; a step of performing a color conversion between a color representing space of the color image data constituting the pre conversion data and a color representing space of the color image data constituting the post conversion data; and a step of controlling a conversion order such that the color conversion is executed before or after converting the resolutions, on a side having a lower one of the resolutions, based on a comparison result of the resolutions.
Claim 6
Independent Claim
143 words
A method of image processing accompanied by conversion of resolution and color conversion, said method comprising: a step of comparing a resolution of color image data constituting pre conversion data with a resolution of color image data constituting post conversion data; a step of converting the resolutions between the color image data constituting the pre conversion data and the color image data constituting the post conversion data; a step of performing a color conversion between a color representing space of the color image data constituting the pre conversion data and a color representing space of the color image data constituting the post conversion data; and a step of controlling a conversion order such that the color conversion is executed before or after converting the resolutions, on a side having a lower one of the resolutions, based on a comparison result of the resolutions.
Claim 7
Independent Claim
151 words
A medium recording an image processing program accompanied by conversion of resolution and color conversion, said medium is recorded with an image processing program comprising: a step of comparing a resolution of color image data constituting pre conversion data with a resolution of color image data constituting post conversion data; a step of converting the resolutions between the color image data constituting the pre conversion data and the color image data constituting the post conversion data; a step of performing a color conversion between a color representing space of the color image data constituting the pre conversion data and a color representing space of the color image data constituting the post conversion data; a step of controlling a conversion order such that the color conversion is executed before or after converting the resolutions, on a side having a lower one of the resolutions, based on a comparison result of the resolutions.
Claim 8
Independent Claim
151 words
A medium recording an image processing program accompanied by conversion of resolution and color conversion, said medium is recorded with an image processing program comprising: a step of comparing a resolution of color image data constituting pre conversion data with a resolution of color image data constituting post conversion data; a step of converting the resolutions between the color image data constituting the pre conversion data and the color image data constituting the post conversion data; a step of performing a color conversion between a color representing space of the color image data constituting the pre conversion data and a color representing space of the color image data constituting the post conversion data; a step of controlling a conversion order such that the color conversion is executed before or after converting the resolutions, on a side having a lower one of the resolutions, based on a comparison result of the resolutions.
Claim 9
Dependent Claim
21 words
The image processing device according to claim 1 , wherein the resolution comparing means operates automatically to output the comparison result.
Claim 10
Dependent Claim
25 words
The image processing device according to claim 1 , wherein the resolution comparing means is operated by a manual switch to output the comparison result.
Claim 11
Dependent Claim
19 words
The image processing device according to claim 1 , wherein the color conversion is performed using an interpolation calculation.
Claim 12
Dependent Claim
101 words
The image processing device according to claim 1 , wherein the device is constituted by a computer including an application, printer driver and video driver, wherein the application sends a print request, the printer driver is initiated, the application and printer driver set a form, the application outputs print data in a format in accordance with the form and the printer driver accepts the print data and processes the print data to be output to an output device, wherein the printer driver includes the resolution comparing means, the resolution converting means, the color converting means and the conversion order controlling means.
Claim 13
Dependent Claim
36 words
The image processing device according to claim 8 , wherein the computer includes an operating system, and the print data created by the application are input to the printer driver under control of the operating system.
Claim 14
Dependent Claim
17 words
The method according to claim 3 , wherein the color conversion is performed using an interpolation calculation.
Claim 15
Dependent Claim
125 words
The method according to claim 3 , wherein the method is carried out on a computer including an application, printer driver and video driver, wherein the method further comprises: a step of the application sending a print request; a step of initiating the printer driver; a step of the application and printer driver setting a form; a step of the application outputting print data in a format in accordance with the form; a step of the printer driver accepting the print data and processing the print data to be output to an output device, wherein the processing comprises the step of comparing a resolution, the step of converting the resolutions, the step of performing a color conversion and the step of controlling a conversion order.
Claim 16
Dependent Claim
24 words
The medium according to claim 4 , wherein the color conversion is performed using one of an interpolation calculation and a grey scale conversion.
Claim 17
Dependent Claim
112 words
The medium according to claim 4 , wherein the image processing program further comprises: a step of sending a print request; a step of initiating a printer driver; a step of the image processing program and printer driver setting a form; a step of the image processing program outputting print data in a format in accordance with the form; a step of the printer driver accepting the print data and processing the print data to be output to an output device, wherein the processing comprises the step of comparing a resolution, the step of converting the resolutions, the step of performing a color conversion and the step of controlling a conversion order.
Claim 18
Dependent Claim
46 words
The image processing device according to claim 8 , wherein the the printer driver comprises: a rasterizer unit; and a grey scale converting unit performing grey scale conversion for data with respect to which resolution conversion and color conversion have been performed, thereby obtaining print 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) | 2004-06-04 | 2004-12-04 | 2005-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-06-04 | 2008-12-04 | 2009-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-06-04 | 2012-12-04 | 2013-06-05 | $7700.00 | Window Closed / Lapsed |