DE68915145D1 - Halftone images with error transfer propagation with a phase shift that changes with time. - Google Patents

Halftone images with error transfer propagation with a phase shift that changes with time.

Info

Publication number
DE68915145D1
DE68915145D1 DE68915145T DE68915145T DE68915145D1 DE 68915145 D1 DE68915145 D1 DE 68915145D1 DE 68915145 T DE68915145 T DE 68915145T DE 68915145 T DE68915145 T DE 68915145T DE 68915145 D1 DE68915145 D1 DE 68915145D1
Authority
DE
Germany
Prior art keywords
changes
time
phase shift
halftone images
error transfer
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
DE68915145T
Other languages
German (de)
Other versions
DE68915145T2 (en
Inventor
Ronald I Feigenblatt
Carl G Powell
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE68915145D1 publication Critical patent/DE68915145D1/en
Publication of DE68915145T2 publication Critical patent/DE68915145T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2059—Display of intermediate tones using error diffusion

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Digital Computer Display Output (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Image Processing (AREA)
  • Liquid Crystal Display Device Control (AREA)
DE1989615145 1989-01-13 1989-11-18 Halftone images with error transfer propagation with a phase shift that changes with time. Expired - Fee Related DE68915145T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29776889A 1989-01-13 1989-01-13

Publications (2)

Publication Number Publication Date
DE68915145D1 true DE68915145D1 (en) 1994-06-09
DE68915145T2 DE68915145T2 (en) 1994-11-17

Family

ID=23147668

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1989615145 Expired - Fee Related DE68915145T2 (en) 1989-01-13 1989-11-18 Halftone images with error transfer propagation with a phase shift that changes with time.
DE69007690T Expired - Fee Related DE69007690T2 (en) 1989-01-13 1990-01-12 HALFTONE IMAGES WITH ERROR TRANSMISSION REPRODUCTION WITH A PHASE SHIFT CHANGING WITH TIME.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69007690T Expired - Fee Related DE69007690T2 (en) 1989-01-13 1990-01-12 HALFTONE IMAGES WITH ERROR TRANSMISSION REPRODUCTION WITH A PHASE SHIFT CHANGING WITH TIME.

Country Status (4)

Country Link
EP (2) EP0378780B1 (en)
JP (2) JPH03503461A (en)
DE (2) DE68915145T2 (en)
WO (1) WO1990008377A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05241551A (en) * 1991-11-07 1993-09-21 Canon Inc Image processor
JPH0772824B2 (en) * 1991-12-03 1995-08-02 インターナショナル・ビジネス・マシーンズ・コーポレイション Display system
ATE158435T1 (en) * 1992-05-19 1997-10-15 Canon Kk METHOD AND DEVICE FOR CONTROLLING A DISPLAY
US5585818A (en) * 1992-05-19 1996-12-17 Canon Kabushiki Kaisha Display control unit and display control method
ATE158667T1 (en) * 1992-05-19 1997-10-15 Canon Kk METHOD AND DEVICE FOR CONTROLLING A DISPLAY
JP3089960B2 (en) * 1994-11-17 2000-09-18 株式会社富士通ゼネラル Error diffusion circuit
KR100337866B1 (en) * 1995-09-06 2002-11-04 삼성에스디아이 주식회사 Method for driving grey scale display of matrix-type liquid crystal display device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215590A (en) * 1985-07-15 1987-01-23 株式会社　アスキ− Display controller
JPS6215589A (en) * 1985-07-15 1987-01-23 株式会社　アスキ− Display controller
US4890167A (en) * 1986-10-17 1989-12-26 Matsushita Electric Industrial Co., Ltd. Apparatus for processing image signal
DE3751035T2 (en) * 1986-12-04 1995-05-24 Quantel Ltd Video signal processing systems.
JPS63174089A (en) * 1987-01-14 1988-07-18 株式会社ピーエフユー Contrast display system
WO1988007306A1 (en) * 1987-03-17 1988-09-22 Digital Equipment Corporation System for producing dithered images from continuous-tone image data

Also Published As

Publication number Publication date
JPH0792650B2 (en) 1995-10-09
EP0404933A1 (en) 1991-01-02
DE68915145T2 (en) 1994-11-17
EP0378780B1 (en) 1994-05-04
DE69007690T2 (en) 1994-11-10
EP0378780A1 (en) 1990-07-25
EP0404933B1 (en) 1994-03-30
JPH02234192A (en) 1990-09-17
WO1990008377A1 (en) 1990-07-26
DE69007690D1 (en) 1994-05-05
JPH03503461A (en) 1991-08-01

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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