JP2000354172A - 誤差拡散ハーフトーン法 - Google Patents
誤差拡散ハーフトーン法Info
- Publication number
- JP2000354172A JP2000354172A JP2000132359A JP2000132359A JP2000354172A JP 2000354172 A JP2000354172 A JP 2000354172A JP 2000132359 A JP2000132359 A JP 2000132359A JP 2000132359 A JP2000132359 A JP 2000132359A JP 2000354172 A JP2000354172 A JP 2000354172A
- Authority
- JP
- Japan
- Prior art keywords
- dot
- color
- error
- printed
- cyan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 74
- 238000009792 diffusion process Methods 0.000 title claims description 62
- 239000003086 colorant Substances 0.000 claims abstract description 30
- 238000007639 printing Methods 0.000 claims abstract description 13
- 235000019646 color tone Nutrition 0.000 claims description 5
- 230000001419 dependent effect Effects 0.000 abstract description 67
- 230000001186 cumulative effect Effects 0.000 description 34
- 230000008569 process Effects 0.000 description 16
- 230000002596 correlated effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000010304 firing Methods 0.000 description 8
- 239000000976 ink Substances 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 235000016496 Panda oleosa Nutrition 0.000 description 1
- 240000000220 Panda oleosa Species 0.000 description 1
- 235000012419 Thalia geniculata Nutrition 0.000 description 1
- 244000145580 Thalia geniculata Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/52—Circuits or arrangements for halftone screening
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Color, Gradation (AREA)
- Image Processing (AREA)
- Color Image Communication Systems (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/307064 | 1999-05-07 | ||
| US09/307,064 US6501564B1 (en) | 1999-05-07 | 1999-05-07 | Tone dependent plane dependent error diffusion halftoning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000354172A true JP2000354172A (ja) | 2000-12-19 |
| JP2000354172A5 JP2000354172A5 (enExample) | 2007-06-14 |
Family
ID=23188092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000132359A Withdrawn JP2000354172A (ja) | 1999-05-07 | 2000-05-01 | 誤差拡散ハーフトーン法 |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US6501564B1 (enExample) |
| JP (1) | JP2000354172A (enExample) |
| KR (1) | KR100681108B1 (enExample) |
| BR (1) | BR0001730A (enExample) |
| GB (1) | GB2352353B (enExample) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003110861A (ja) * | 2001-09-28 | 2003-04-11 | Seiko Instruments Inc | カラー階調画像の階調再現方法および装置 |
| US6995868B2 (en) * | 2001-06-29 | 2006-02-07 | Hewlett-Packard Development Company, L.P. | Halftoning algorithm adapted to prevent unaesthetic output |
| KR100611981B1 (ko) | 2004-05-01 | 2006-08-11 | 삼성전자주식회사 | 이미지의 하프토닝 방법 및 장치 |
| JP2006246467A (ja) * | 2005-03-02 | 2006-09-14 | Xerox Corp | 色誤差拡散 |
| US7327491B2 (en) | 2001-10-04 | 2008-02-05 | Canon Kabushiki Kaisha | Image processing apparatus, image processing method, computer program and computer-readable storage medium |
| US7342684B2 (en) | 2002-09-20 | 2008-03-11 | Canon Kabushiki Kaisha | Image processing method and apparatus |
| WO2008094767A1 (en) * | 2007-01-26 | 2008-08-07 | Hewlett-Packard Development Company, L.P. | Halftoning curved images |
| JP2009020617A (ja) * | 2007-07-10 | 2009-01-29 | Canon Inc | 画像処理装置および画像処理方法、並びに、インクジェット記録装置 |
| EP2107789A2 (en) | 2008-03-31 | 2009-10-07 | Canon Kabushiki Kaisha | Image processing apparatus and image processing method |
| EP2107508A2 (en) | 2008-03-31 | 2009-10-07 | Canon Kabushiki Kaisha | Image processing apparatus and image processing method |
| EP2677731A2 (en) | 2012-06-19 | 2013-12-25 | Dainippon Screen Mfg. Co., Ltd. | Image data generation method, image recording method, image data generation apparatus, and image recording apparatus |
| EP2843934A2 (en) | 2013-08-29 | 2015-03-04 | SCREEN Holdings Co., Ltd. | Image data generation method, image recording method, image data generation apparatus, and image recording apparatus |
| JP2015100923A (ja) * | 2013-11-21 | 2015-06-04 | 株式会社Screenホールディングス | 画像記録装置および画像記録方法 |
Families Citing this family (76)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000244737A (ja) * | 1999-02-24 | 2000-09-08 | Fujitsu Ltd | 中間調処理方法 |
| US7054038B1 (en) * | 2000-01-04 | 2006-05-30 | Ecole polytechnique fédérale de Lausanne (EPFL) | Method and apparatus for generating digital halftone images by multi color dithering |
| US6721063B1 (en) * | 2000-01-19 | 2004-04-13 | Xerox Corporation | Image rendering system and method using sum and difference error diffusion with arbitrary and redundant colors |
| US8692844B1 (en) | 2000-09-28 | 2014-04-08 | Nvidia Corporation | Method and system for efficient antialiased rendering |
| US6870645B1 (en) | 2000-10-03 | 2005-03-22 | Hewlett-Packard Development Company, L.P. | Plane dependent matrix based halftoning |
| JP2002127393A (ja) * | 2000-10-23 | 2002-05-08 | Canon Inc | 記録システムおよび記録方法 |
| US7099046B2 (en) * | 2000-11-30 | 2006-08-29 | Canon Kabushiki Kaisha | Image processing apparatus and image processing method |
| US7002708B2 (en) * | 2001-10-29 | 2006-02-21 | Hewlett-Packard Development Company, Lp. | Delayed decision dot placement for plane-dependent CMYK error diffusion |
| US7199905B2 (en) * | 2001-12-04 | 2007-04-03 | Xerox Corporation | Systems and methods for halftoning multiple color separation layers by interlayer error diffusion |
| US20030179410A1 (en) * | 2002-03-21 | 2003-09-25 | Velde Koen Van De | Multilevel colour error-diffusion providing reduced sensitivity to printing process variability errors |
| JP3943981B2 (ja) * | 2002-04-10 | 2007-07-11 | キヤノン株式会社 | 画像処理装置及び方法 |
| JP2004142388A (ja) * | 2002-10-28 | 2004-05-20 | Fuji Photo Film Co Ltd | プリントシステム及びプリンタ |
| US20050219623A1 (en) * | 2003-07-23 | 2005-10-06 | Konica Minolta Holdings, Inc. | Image processing apparatus and image processing method |
| ES2681886T3 (es) * | 2003-08-14 | 2018-09-17 | Sicpa Holding Sa | Tramado dependiente del tono con tablas de consulta optimizadas |
| US8775112B2 (en) | 2003-09-15 | 2014-07-08 | Nvidia Corporation | System and method for increasing die yield |
| US8775997B2 (en) | 2003-09-15 | 2014-07-08 | Nvidia Corporation | System and method for testing and configuring semiconductor functional circuits |
| US8732644B1 (en) | 2003-09-15 | 2014-05-20 | Nvidia Corporation | Micro electro mechanical switch system and method for testing and configuring semiconductor functional circuits |
| KR100601646B1 (ko) * | 2003-11-26 | 2006-07-14 | 삼성전자주식회사 | 컬러오차확산 방법 및 장치 |
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| US7362472B2 (en) * | 2004-03-05 | 2008-04-22 | Eastman Kodak Company | Color error diffusion |
| US20050225806A1 (en) * | 2004-03-17 | 2005-10-13 | Niranjan Damera-Venkata | Error diffusion using sub-pixel modulation |
| JP4293044B2 (ja) * | 2004-04-21 | 2009-07-08 | ブラザー工業株式会社 | 画像形成装置、画像形成方法及び画像形成プログラム |
| US8723231B1 (en) | 2004-09-15 | 2014-05-13 | Nvidia Corporation | Semiconductor die micro electro-mechanical switch management system and method |
| US8711156B1 (en) | 2004-09-30 | 2014-04-29 | Nvidia Corporation | Method and system for remapping processing elements in a pipeline of a graphics processing unit |
| US7733532B2 (en) * | 2004-10-27 | 2010-06-08 | Marvell International Technology Ltd. | Laser print apparatus with dual halftones |
| US7639887B2 (en) * | 2004-12-14 | 2009-12-29 | Intel Corporation | Error diffusion-based image processing |
| CN100364780C (zh) * | 2005-01-07 | 2008-01-30 | 北京北大方正电子有限公司 | 一种随机使用多种图元对象进行图像光栅化的方法 |
| US8159720B2 (en) * | 2005-04-08 | 2012-04-17 | Xerox Corporation | Color error diffusion |
| US7440140B2 (en) * | 2005-04-29 | 2008-10-21 | Hewlett-Packard Development Company, L.P. | Sequential color error diffusion with forward and backward exchange of information between color planes |
| US7580074B2 (en) * | 2005-05-10 | 2009-08-25 | Primax Electronics Ltd. | Digital halftoning technique based on 1-D multi-scale dot assignment |
| US8427496B1 (en) | 2005-05-13 | 2013-04-23 | Nvidia Corporation | Method and system for implementing compression across a graphics bus interconnect |
| US7457015B2 (en) * | 2005-05-18 | 2008-11-25 | Xerox Corporation | Color printing |
| US8154777B2 (en) * | 2005-08-09 | 2012-04-10 | Xerox Corporation | Color compensation of images |
| US7483029B2 (en) * | 2005-12-15 | 2009-01-27 | Nvidia Corporation | GPU having raster components configured for using nested boustrophedonic patterns to traverse screen areas |
| US8698811B1 (en) | 2005-12-15 | 2014-04-15 | Nvidia Corporation | Nested boustrophedonic patterns for rasterization |
| US8390645B1 (en) | 2005-12-19 | 2013-03-05 | Nvidia Corporation | Method and system for rendering connecting antialiased line segments |
| US9117309B1 (en) | 2005-12-19 | 2015-08-25 | Nvidia Corporation | Method and system for rendering polygons with a bounding box in a graphics processor unit |
| JP4622932B2 (ja) * | 2006-05-11 | 2011-02-02 | 村田機械株式会社 | 画像処理方法、画像処理装置、コンピュータプログラム及び記録媒体 |
| US8928676B2 (en) * | 2006-06-23 | 2015-01-06 | Nvidia Corporation | Method for parallel fine rasterization in a raster stage of a graphics pipeline |
| US7564589B2 (en) * | 2006-08-31 | 2009-07-21 | Eastman Kodak Company | Color error diffusion with error signal offsets |
| US8427487B1 (en) | 2006-11-02 | 2013-04-23 | Nvidia Corporation | Multiple tile output using interface compression in a raster stage |
| US8237738B1 (en) | 2006-11-02 | 2012-08-07 | Nvidia Corporation | Smooth rasterization of polygonal graphics primitives |
| US8482567B1 (en) | 2006-11-03 | 2013-07-09 | Nvidia Corporation | Line rasterization techniques |
| US7679916B2 (en) * | 2006-12-08 | 2010-03-16 | GE Intelligent Platforms Embedded Systems, Inc. | Method and system for extracting heat from electrical components |
| US7808512B1 (en) | 2006-12-19 | 2010-10-05 | Nvidia Corporation | Bounding region accumulation for graphics rendering |
| US8724483B2 (en) | 2007-10-22 | 2014-05-13 | Nvidia Corporation | Loopback configuration for bi-directional interfaces |
| US9064333B2 (en) | 2007-12-17 | 2015-06-23 | Nvidia Corporation | Interrupt handling techniques in the rasterizer of a GPU |
| US8780123B2 (en) | 2007-12-17 | 2014-07-15 | Nvidia Corporation | Interrupt handling techniques in the rasterizer of a GPU |
| US8442959B2 (en) * | 2007-12-19 | 2013-05-14 | Verizon Patent And Licensing Inc. | Methods and systems for automated processing of fallout orders |
| JP5137558B2 (ja) * | 2007-12-20 | 2013-02-06 | キヤノン株式会社 | 画像処理装置および画像処理方法 |
| US7978371B2 (en) * | 2008-02-05 | 2011-07-12 | Xerox Corporation | Vector half-toning with minimum luminance variation dot formation |
| US7952764B2 (en) * | 2008-02-05 | 2011-05-31 | Xerox Corporation | Hierarchical color error diffusion in a CMYKRGB domain |
| US8923385B2 (en) | 2008-05-01 | 2014-12-30 | Nvidia Corporation | Rewind-enabled hardware encoder |
| US8681861B2 (en) | 2008-05-01 | 2014-03-25 | Nvidia Corporation | Multistandard hardware video encoder |
| US8179568B2 (en) * | 2008-07-24 | 2012-05-15 | Xerox Corporation | Minimizing dot graininess in dot-on-dot printing devices |
| US7916349B2 (en) * | 2008-10-27 | 2011-03-29 | Xerox Corporation | Color pixel error diffusion in a CMYK input color space |
| US8681381B1 (en) * | 2008-11-12 | 2014-03-25 | Marvell International Ltd. | Pixel stacking avoidance error diffusion halftone |
| US8169665B2 (en) * | 2009-03-30 | 2012-05-01 | Silitek Electronic (Guangzhou) Co., Ltd. | Tone dependent green-noise error diffusion method and printing device thereof |
| US8294964B2 (en) * | 2009-04-08 | 2012-10-23 | Xerox Corporation | CMYK to CMYKKpRGB transform for halftone dot overlap control |
| JP5487813B2 (ja) * | 2009-09-02 | 2014-05-14 | セイコーエプソン株式会社 | 画像処理装置、画像処理方法、および、プログラム |
| JP2011055284A (ja) * | 2009-09-02 | 2011-03-17 | Seiko Epson Corp | 画像処理装置、画像処理方法、および、プログラム |
| US20110063305A1 (en) * | 2009-09-16 | 2011-03-17 | Nvidia Corporation | Co-processing techniques on heterogeneous graphics processing units |
| US9530189B2 (en) | 2009-12-31 | 2016-12-27 | Nvidia Corporation | Alternate reduction ratios and threshold mechanisms for framebuffer compression |
| US8391647B1 (en) | 2010-02-17 | 2013-03-05 | Hewlett-Packard Development Company, L.P. | Pixel replacement |
| US9331869B2 (en) | 2010-03-04 | 2016-05-03 | Nvidia Corporation | Input/output request packet handling techniques by a device specific kernel mode driver |
| US9171350B2 (en) | 2010-10-28 | 2015-10-27 | Nvidia Corporation | Adaptive resolution DGPU rendering to provide constant framerate with free IGPU scale up |
| US8681382B1 (en) * | 2010-11-09 | 2014-03-25 | Marvell International Ltd. | Threshold matrix diffusion halftoning |
| JP5825857B2 (ja) | 2011-06-03 | 2015-12-02 | キヤノン株式会社 | 画像形成装置、画像形成方法、および、プログラム |
| JP5825856B2 (ja) * | 2011-06-03 | 2015-12-02 | キヤノン株式会社 | 画像形成装置、画像形成方法、および、プログラム |
| US9607407B2 (en) | 2012-12-31 | 2017-03-28 | Nvidia Corporation | Variable-width differential memory compression |
| US9591309B2 (en) | 2012-12-31 | 2017-03-07 | Nvidia Corporation | Progressive lossy memory compression |
| US8922802B2 (en) | 2013-02-21 | 2014-12-30 | Ricoh Company, Ltd. | Method and system for halftoning using energy minimization |
| US9710894B2 (en) | 2013-06-04 | 2017-07-18 | Nvidia Corporation | System and method for enhanced multi-sample anti-aliasing |
| CN105900412B (zh) * | 2013-10-15 | 2018-11-06 | 惠普发展公司,有限责任合伙企业 | 使用基于内容的加权抖动进行图像处理的方法、图像处理器和打印机 |
| US9832388B2 (en) | 2014-08-04 | 2017-11-28 | Nvidia Corporation | Deinterleaving interleaved high dynamic range image by using YUV interpolation |
| WO2016060652A1 (en) * | 2014-10-14 | 2016-04-21 | Hewlett-Packard Development Company, L.P. | Mitigating dot placement errors for a print job |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5313287A (en) | 1993-04-30 | 1994-05-17 | Hewlett-Packard Company | Imposed weight matrix error diffusion halftoning of image data |
| JPH07307866A (ja) * | 1994-05-10 | 1995-11-21 | Fuji Photo Film Co Ltd | 画像信号2値化処理装置および方法 |
| US6427030B1 (en) * | 1994-08-03 | 2002-07-30 | Xerox Corporation | Method and system for image conversion utilizing dynamic error diffusion |
| JP3381755B2 (ja) | 1994-10-11 | 2003-03-04 | セイコーエプソン株式会社 | 画像の粒状性を減らすための改良された適応性のあるフィルタリングおよび閾値設定の方法及び装置 |
| CA2169902A1 (en) | 1995-03-16 | 1996-09-17 | Allan Chiwan Cheung | Combined color halftoning |
| US5737453A (en) | 1996-05-17 | 1998-04-07 | Canon Information Systems, Inc. | Enhanced error-diffusion method for color or black-and-white reproduction |
| EP0863127B1 (en) * | 1997-03-06 | 2002-08-28 | Mitsubishi Gas Chemical Company, Inc. | Method of purifying liquid crystal |
| US5949965A (en) | 1997-06-23 | 1999-09-07 | Hewlett-Packard Company | Correlating cyan and magenta planes for error diffusion halftoning |
| US6172768B1 (en) * | 1998-02-05 | 2001-01-09 | Canon Kabushiki Kaisha | Halftoning with changeable error diffusion weights |
-
1999
- 1999-05-07 US US09/307,064 patent/US6501564B1/en not_active Expired - Fee Related
-
2000
- 2000-04-18 GB GB0009598A patent/GB2352353B/en not_active Expired - Fee Related
- 2000-05-01 JP JP2000132359A patent/JP2000354172A/ja not_active Withdrawn
- 2000-05-05 BR BR0001730-2A patent/BR0001730A/pt not_active IP Right Cessation
- 2000-05-06 KR KR1020000024176A patent/KR100681108B1/ko not_active Expired - Fee Related
-
2002
- 2002-09-09 US US10/237,428 patent/US6870644B2/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6995868B2 (en) * | 2001-06-29 | 2006-02-07 | Hewlett-Packard Development Company, L.P. | Halftoning algorithm adapted to prevent unaesthetic output |
| JP2003110861A (ja) * | 2001-09-28 | 2003-04-11 | Seiko Instruments Inc | カラー階調画像の階調再現方法および装置 |
| US7327491B2 (en) | 2001-10-04 | 2008-02-05 | Canon Kabushiki Kaisha | Image processing apparatus, image processing method, computer program and computer-readable storage medium |
| US7342684B2 (en) | 2002-09-20 | 2008-03-11 | Canon Kabushiki Kaisha | Image processing method and apparatus |
| KR100611981B1 (ko) | 2004-05-01 | 2006-08-11 | 삼성전자주식회사 | 이미지의 하프토닝 방법 및 장치 |
| JP2006246467A (ja) * | 2005-03-02 | 2006-09-14 | Xerox Corp | 色誤差拡散 |
| WO2008094767A1 (en) * | 2007-01-26 | 2008-08-07 | Hewlett-Packard Development Company, L.P. | Halftoning curved images |
| JP2009020617A (ja) * | 2007-07-10 | 2009-01-29 | Canon Inc | 画像処理装置および画像処理方法、並びに、インクジェット記録装置 |
| EP2107789A2 (en) | 2008-03-31 | 2009-10-07 | Canon Kabushiki Kaisha | Image processing apparatus and image processing method |
| EP2107508A2 (en) | 2008-03-31 | 2009-10-07 | Canon Kabushiki Kaisha | Image processing apparatus and image processing method |
| EP2677731A2 (en) | 2012-06-19 | 2013-12-25 | Dainippon Screen Mfg. Co., Ltd. | Image data generation method, image recording method, image data generation apparatus, and image recording apparatus |
| CN103516954A (zh) * | 2012-06-19 | 2014-01-15 | 大日本网屏制造株式会社 | 图像数据生成方法及装置、图像记录方法及装置 |
| US8848246B2 (en) | 2012-06-19 | 2014-09-30 | Dainippon Screen Mfg. Co., Ltd. | Image data generation method, image recording method, image data generation apparatus, and image recording apparatus |
| CN103516954B (zh) * | 2012-06-19 | 2016-03-30 | 斯克林集团公司 | 图像数据生成方法及装置、图像记录方法及装置 |
| EP2843934A2 (en) | 2013-08-29 | 2015-03-04 | SCREEN Holdings Co., Ltd. | Image data generation method, image recording method, image data generation apparatus, and image recording apparatus |
| CN104427206A (zh) * | 2013-08-29 | 2015-03-18 | 斯克林集团公司 | 图像数据生成方法及装置、图像记录方法及装置 |
| US9124842B2 (en) | 2013-08-29 | 2015-09-01 | SCREEN Holdings Co., Ltd. | Image data generation method, image recording method, image data generation apparatus, and image recording apparatus |
| JP2015100923A (ja) * | 2013-11-21 | 2015-06-04 | 株式会社Screenホールディングス | 画像記録装置および画像記録方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US6501564B1 (en) | 2002-12-31 |
| US20030090728A1 (en) | 2003-05-15 |
| KR100681108B1 (ko) | 2007-02-08 |
| GB0009598D0 (en) | 2000-06-07 |
| US6870644B2 (en) | 2005-03-22 |
| KR20010020817A (ko) | 2001-03-15 |
| GB2352353B (en) | 2003-07-23 |
| GB2352353A (en) | 2001-01-24 |
| BR0001730A (pt) | 2001-01-02 |
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