Patent US7126722B2 successfully refreshed from Google Patents.
US7126722B2
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Image data conversion method and apparatus
Assignee: Fujitsu Ltd
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Filing: 2002-03-12
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Granted: 2006-10-24
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Expires: 2022-03-12
Abstract
Abstract This invention is to correct a difference of dot gain between output devices. This invention for converting binary data for a first output device to binary data for a second output device includes the steps of: converting the binary data for the first output device to multi-value data; correcting the multi-value data so that an output density by the second output device becomes equal to an output density by the first output device; and converting the corrected multi-value data to the binary data for the second output device. As stated above, by carrying out the correction so that the output density of the first output device coincides with the output density of the second output device, the user can obtain the same output result without giving consideration to a difference between output devices.
Inventors
- 👤 Hiroki Ino
- 👤 Takeshi Nagae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:32
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K15/102
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
134 words
A data conversion method for converting binary image data for a first output device to binary image data for a second output device, comprising: converting binary image data for a first output device to multi-value image data; correcting said multi-value image data so that an output density by a second output device becomes equal to an output density by said first output device, by using a corresponding relation between a digital value of said multi-value image data for said first output device and a digital value of said multi-value image data for said second output device, that cause said output density by said second output device to become equal to said output density by said first output device; and converting the corrected multi-value image data to binary image data for said second output device.
Claim 2
Dependent Claim
134 words
A data conversion method for converting binary image data for a first output device to binary image data for a second output device, comprising: converting binary image data for a first output device to multi-value image data; correcting said multi-value image data so that an output density by a second output device becomes equal to an output density by said first output device, by using a corresponding relation between a digital value of said multi-value image data for said first output device and a digital value of said multi-value image data for said second output device, that cause said output density by said second output device to become equal to said output density by said first output device; and converting the corrected multi-value image data to binary image data for said second output device.
Claim 3
Dependent Claim
65 words
The data conversion method as set forth in claim 1 , wherein said converting binary image data comprises: converting binary image data for a first output device to multi-value image data having a resolution of said first output device; and converting said multi-value image data having said resolution of said first output device to multi-value image data having a resolution of a second output device.
Claim 4
Dependent Claim
20 words
The data conversion method as set forth in claim 1 , further comprising generating a table concerning said corresponding relation.
Claim 5
Dependent Claim
29 words
The data conversion method as set forth in claim 1 , wherein said correcting comprises correcting said multi-value image data by referring to a table concerning said corresponding relation.
Claim 6
Dependent Claim
147 words
A data conversion program embodied on a computer-readable medium for causing a computer to convert binary image data for a first output device to binary image data for a second output device, said data conversion program comprising: converting binary image data for a first output device to multi-value image data; correcting said multi-value image data so that an output density by a second output device becomes equal to an output density by said first output device by using a corresponding relation between a digital value of said multi-value image data for said first output device and a digital value of said multi-value image data for said second output device, that cause said output density by said second output device to become equal to said output density by said first output device; and converting the corrected multi-value image data to binary image data for said second output device.
Claim 7
Dependent Claim
147 words
A data conversion program embodied on a computer-readable medium for causing a computer to convert binary image data for a first output device to binary image data for a second output device, said data conversion program comprising: converting binary image data for a first output device to multi-value image data; correcting said multi-value image data so that an output density by a second output device becomes equal to an output density by said first output device by using a corresponding relation between a digital value of said multi-value image data for said first output device and a digital value of said multi-value image data for said second output device, that cause said output density by said second output device to become equal to said output density by said first output device; and converting the corrected multi-value image data to binary image data for said second output device.
Claim 8
Dependent Claim
70 words
The data conversion program embodied on a computer-readable medium as set forth in claim 5 , wherein said converting binary image data comprises: converting binary image data for a first output device to multi-value image data having a resolution of said first output device; and converting said multi-value image data having said resolution of said first output device to multi-value image data having a resolution of a second output device.
Claim 9
Dependent Claim
25 words
The data conversion program embodied on a computer-readable medium as set forth in claim 5 , further comprising generating a table concerning said corresponding relation.
Claim 10
Dependent Claim
34 words
The data conversion program embodied on a computer-readable medium as set forth in claim 5 , wherein said correcting comprises correcting said multi-value image data by referring to a table concerning said corresponding relation.
Claim 11
Dependent Claim
140 words
A data conversion apparatus for converting binary image data for a first output device to binary image data for a second output device, comprising: means for converting binary image data for a first output device to multi-value image data; means for correcting said multi-value image data so that an output density by a second output device becomes equal to an output density by said first output device by using a corresponding relation between a digital value of said multi-value image data for said first output device and a digital value of said multi-value image data for said second output device, that cause said output density by said second output device to become equal to said output density by said first output device; and means for converting the corrected multi-value image data to binary image data for said second output device.
Claim 12
Dependent Claim
140 words
A data conversion apparatus for converting binary image data for a first output device to binary image data for a second output device, comprising: means for converting binary image data for a first output device to multi-value image data; means for correcting said multi-value image data so that an output density by a second output device becomes equal to an output density by said first output device by using a corresponding relation between a digital value of said multi-value image data for said first output device and a digital value of said multi-value image data for said second output device, that cause said output density by said second output device to become equal to said output density by said first output device; and means for converting the corrected multi-value image data to binary image data for said second output device.
Claim 13
Dependent Claim
71 words
The data conversion apparatus as set forth in claim 9 , wherein said means for converting binary image data comprises: means for converting binary image data for a first output device to multi-value image data having a resolution of said first output device; and means for converting said multi-value image data having said resolution of said first output device to multi-value image data having a resolution of a second output device.
Claim 14
Dependent Claim
22 words
The data conversion apparatus as set forth in claim 9 , further comprising means for generating a table concerning said corresponding relation.
Claim 15
Dependent Claim
33 words
The data conversion apparatus as set forth in claim 9 , wherein said means for correcting comprises means for correcting said multi-value image data by referring to a table concerning said corresponding relation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2009-10-23 | 2010-04-24 | 2010-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-10-23 | 2014-04-24 | 2014-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-10-23 | 2018-04-24 | 2018-10-24 | $7700.00 | Window Closed / Lapsed |