Hybrid halftone generation mechanism using change in pixel error
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 8, 2014
Issued Date -
N/A
app pub date -
Apr 5, 2012
filing date -
Apr 5, 2012
priority date (Note) -
In Force
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Abstract
A method is disclosed. The method includes generating a Continuous Tone Image (CTI) with all pixel values same as a first gray level, generating an initial Half Tone Image (HTI) with all pixel values equal to minimum absorptance level and computing a change in pixel error for a first pixel. The change in pixel error is computed by identifying a first pixel indicated in a valid pixel map, toggling the first pixel with all the possible output states and swapping the first pixel with all neighbor pixels only if the stacking constraint is satisfied, updating the HTI with the maximum error decrease operation and continue to next pixel location till the end criteria is met.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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RICOH COMPANY LTD | TOKYO 143-8555 |
International Classification(s)

- 2012 Application Filing Year
- G09G Class
- 4192 Applications Filed
- 3286 Patents Issued To-Date
- 78.39 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Chandu, Kartheek | Longmont, US | 41 | 287 |
# of filed Patents : 41 Total Citations : 287 | |||
Stanich, Mikel J | Longmont, US | 34 | 340 |
# of filed Patents : 34 Total Citations : 340 | |||
Trager, Barry M | Yorktown Heights, US | 31 | 970 |
# of filed Patents : 31 Total Citations : 970 | |||
Wu, Chai Wah | Hopewell Junction, US | 71 | 1183 |
# of filed Patents : 71 Total Citations : 1183 |
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Patent Citation Ranking
- 1 Citation Count
- G09G Class
- 6.31 % this patent is cited more than
- 11 Age
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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 8, 2026 |
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