DE69212012D1 - Impulsdauermodulationsvorrichtung - Google Patents

Impulsdauermodulationsvorrichtung

Info

Publication number
DE69212012D1
DE69212012D1 DE69212012T DE69212012T DE69212012D1 DE 69212012 D1 DE69212012 D1 DE 69212012D1 DE 69212012 T DE69212012 T DE 69212012T DE 69212012 T DE69212012 T DE 69212012T DE 69212012 D1 DE69212012 D1 DE 69212012D1
Authority
DE
Germany
Prior art keywords
pulse duration
modulation device
duration modulation
pulse
modulation
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.)
Expired - Fee Related
Application number
DE69212012T
Other languages
English (en)
Other versions
DE69212012T2 (de
Inventor
Itsuo Takanashi
Takashi Yamamura
Toshikatsu Ichitou
Kazunori Namiki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Application granted granted Critical
Publication of DE69212012D1 publication Critical patent/DE69212012D1/de
Publication of DE69212012T2 publication Critical patent/DE69212012T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/025—Digital function generators for functions having two-valued amplitude, e.g. Walsh functions
    • 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
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
    • H04N1/4056—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern the pattern varying in one dimension only, e.g. dash length, pulse width modulation [PWM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Laser Beam Printer (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Color, Gradation (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Facsimile Scanning Arrangements (AREA)
DE69212012T 1991-02-15 1992-02-14 Impulsdauermodulationsvorrichtung Expired - Fee Related DE69212012T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3042778A JPH04261264A (ja) 1991-02-15 1991-02-15 パルス幅変調装置

Publications (2)

Publication Number Publication Date
DE69212012D1 true DE69212012D1 (de) 1996-08-14
DE69212012T2 DE69212012T2 (de) 1997-01-02

Family

ID=12645427

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69212012T Expired - Fee Related DE69212012T2 (de) 1991-02-15 1992-02-14 Impulsdauermodulationsvorrichtung

Country Status (4)

Country Link
US (1) US5255351A (de)
EP (1) EP0499288B1 (de)
JP (1) JPH04261264A (de)
DE (1) DE69212012T2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05268465A (ja) * 1991-09-27 1993-10-15 Apple Computer Inc イメージングデータを文脈依存後処理する方法及び装置
NL9102165A (nl) * 1991-12-23 1993-07-16 Oce Nederland Bv Inrichting voor het rasteriseren van beeldgegevens in contourvorm.
JP3021278B2 (ja) * 1993-08-30 2000-03-15 シャープ株式会社 均一幅線の生成装置及び均一幅線の生成方法
US5696845A (en) * 1993-12-17 1997-12-09 Xerox Corporation Method for design and implementation of an image resolution enhancement system that employs statistically generated look-up tables
JP3156605B2 (ja) * 1996-11-19 2001-04-16 セイコーエプソン株式会社 トナー転写式の印刷装置のためのパルス幅データの生成装置及び方法
US6052203A (en) * 1996-11-19 2000-04-18 Seiko Epson Corporation Printing system, printer, printer driver and program storage medium
WO2000015438A1 (fr) * 1998-09-10 2000-03-23 Copyer Co., Ltd. Procede de transfert de donnees d'impression et imprimante a cet effet
US7154515B2 (en) * 2001-06-15 2006-12-26 Perkinelmer, Inc. Method and apparatus for reducing printing artifacts of stitched images
US7288895B2 (en) * 2003-11-17 2007-10-30 Intel Corporation System to improve display efficiency based on recycling local heat source
US7269005B2 (en) 2003-11-21 2007-09-11 Intel Corporation Pumped loop cooling with remote heat exchanger and display cooling
TW200817199A (en) * 2006-10-04 2008-04-16 Lite On Technology Corp Thermal printing apparatuses and printing methods thereof
US20090021545A1 (en) * 2007-07-19 2009-01-22 Samsung Electronics Co. Ltd. Image forming apparatus and method of generating output signal thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56152373A (en) * 1980-04-24 1981-11-25 Fuji Photo Film Co Ltd Laser recording device
JPS56153881A (en) * 1980-04-30 1981-11-28 Fuji Photo Film Co Ltd Half tone picture recording device
JPS59163952A (ja) * 1983-03-08 1984-09-17 Canon Inc 画像処理装置
EP0717550A3 (de) * 1986-02-14 1996-10-09 Canon Kk Bildverarbeitungsgerät
JPS62236204A (ja) * 1986-04-08 1987-10-16 Canon Inc パルス幅変調装置
JPS6345973A (ja) * 1986-08-12 1988-02-26 Canon Inc 中間調画像処理装置
JPS6374664A (ja) * 1986-09-18 1988-04-05 Sony Corp 感熱ヘツドの駆動回路
JP2723535B2 (ja) * 1988-05-09 1998-03-09 株式会社リコー 像形成装置
US4985779A (en) * 1989-09-19 1991-01-15 Intergraph Corporation Improved method and apparatus for generating halftone images

Also Published As

Publication number Publication date
DE69212012T2 (de) 1997-01-02
EP0499288B1 (de) 1996-07-10
EP0499288A2 (de) 1992-08-19
US5255351A (en) 1993-10-19
EP0499288A3 (en) 1992-12-09
JPH04261264A (ja) 1992-09-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee