DE3906924C2 - - Google Patents

Info

Publication number
DE3906924C2
DE3906924C2 DE19893906924 DE3906924A DE3906924C2 DE 3906924 C2 DE3906924 C2 DE 3906924C2 DE 19893906924 DE19893906924 DE 19893906924 DE 3906924 A DE3906924 A DE 3906924A DE 3906924 C2 DE3906924 C2 DE 3906924C2
Authority
DE
Germany
Prior art keywords
picture elements
picture
grayscale
display
output
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
DE19893906924
Other languages
German (de)
English (en)
Other versions
DE3906924A1 (de
Inventor
Tai Nara Jp Shiraishi
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Publication of DE3906924A1 publication Critical patent/DE3906924A1/de
Application granted granted Critical
Publication of DE3906924C2 publication Critical patent/DE3906924C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/12—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays
    • 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
    • G09G3/2044—Display of intermediate tones using dithering
    • G09G3/2051—Display of intermediate tones using dithering with use of a spatial dither pattern
    • 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
    • G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
    • G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
    • G09G3/2025—Display of intermediate tones by time modulation using two or more time intervals using sub-frames the sub-frames having all the same time duration
    • 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
    • G09G3/2077—Display of intermediate tones by a combination of two or more gradation control methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
DE19893906924 1988-03-05 1989-03-03 Graustufen-abbildungsverfahren mit einer punktematrix-anzeigeeinrichtung Granted DE3906924A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63052242A JP2784005B2 (ja) 1988-03-05 1988-03-05 表示装置の階調表示方式

Publications (2)

Publication Number Publication Date
DE3906924A1 DE3906924A1 (de) 1989-09-14
DE3906924C2 true DE3906924C2 (enrdf_load_stackoverflow) 1993-06-24

Family

ID=12909255

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893906924 Granted DE3906924A1 (de) 1988-03-05 1989-03-03 Graustufen-abbildungsverfahren mit einer punktematrix-anzeigeeinrichtung

Country Status (2)

Country Link
JP (1) JP2784005B2 (enrdf_load_stackoverflow)
DE (1) DE3906924A1 (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03231286A (ja) * 1990-02-06 1991-10-15 Seiko Epson Corp 液晶パネルの駆動方法
JPH0279092A (ja) * 1988-09-14 1990-03-19 Ascii Corp 階調表示制御回路
JPH02134687A (ja) * 1988-11-15 1990-05-23 Sharp Corp 表示制御装置
US5185602A (en) * 1989-04-10 1993-02-09 Cirrus Logic, Inc. Method and apparatus for producing perception of high quality grayscale shading on digitally commanded displays
JP2637822B2 (ja) * 1989-05-30 1997-08-06 シャープ株式会社 表示装置の駆動方法
WO1993013513A1 (en) * 1991-12-24 1993-07-08 Cirrus Logic, Inc. Process for producing shaded images on display screens
US5751265A (en) * 1991-12-24 1998-05-12 Cirrus Logic, Inc. Apparatus and method for producing shaded images on display screens
DE69405808T2 (de) * 1993-05-05 1998-03-26 Philips Electronics Nv Verfahren und Vorrichtung für die Erzeugung von Grautönen für eine Flüssigkristall-Anzeigevorrichtung mit passiver Matrix
JP4662745B2 (ja) * 2004-09-16 2011-03-30 Ｎｅｃエンジニアリング株式会社 階調データ生成回路及び階調データ生成方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5238693B2 (enrdf_load_stackoverflow) * 1971-12-30 1977-09-30
US4706077A (en) * 1981-09-08 1987-11-10 Xerox Corporation Halftoning implementation for interactive image editing
JPH06103431B2 (ja) * 1985-03-08 1994-12-14 株式会社アスキ− デイスプレイコントロ−ラ
FR2580110B1 (enrdf_load_stackoverflow) * 1985-04-04 1987-05-29 Commissariat Energie Atomique
JPH0827601B2 (ja) * 1986-01-13 1996-03-21 株式会社日立製作所 液晶表示装置、及びその駆動方法
JPS6397921A (ja) * 1986-10-14 1988-04-28 Seiko Epson Corp 液晶表示装置
JP2749035B2 (ja) * 1987-05-20 1998-05-13 株式会社日立製作所 液晶表示装置

Also Published As

Publication number Publication date
DE3906924A1 (de) 1989-09-14
JP2784005B2 (ja) 1998-08-06
JPH01225997A (ja) 1989-09-08

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN

8339 Ceased/non-payment of the annual fee