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EP0206328A3 - Control circuit of raster scanning display unit - Google Patents

Control circuit of raster scanning display unit Download PDF

Info

Publication number
EP0206328A3
EP0206328A3 EP86108650A EP86108650A EP0206328A3 EP 0206328 A3 EP0206328 A3 EP 0206328A3 EP 86108650 A EP86108650 A EP 86108650A EP 86108650 A EP86108650 A EP 86108650A EP 0206328 A3 EP0206328 A3 EP 0206328A3
Authority
EP
European Patent Office
Prior art keywords
area
address
control circuit
display unit
raster scanning
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.)
Granted
Application number
EP86108650A
Other versions
EP0206328A2 (en
EP0206328B1 (en
Inventor
Nobuyuki Oki Electric Industry Co. Ltd. Sato
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to AT86108650T priority Critical patent/ATE90469T1/en
Publication of EP0206328A2 publication Critical patent/EP0206328A2/en
Publication of EP0206328A3 publication Critical patent/EP0206328A3/en
Application granted granted Critical
Publication of EP0206328B1 publication Critical patent/EP0206328B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/39—Control of the bit-mapped memory
    • G09G5/395—Arrangements specially adapted for transferring the contents of the bit-mapped memory to the screen

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Control Of El Displays (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Soil Working Implements (AREA)
  • Digital Computer Display Output (AREA)

Abstract

A control circuit of a raster scanning display unit has an address converting part disposed between a video memory (2) and a read address generating part, said address converting part (5) judging whether or not the area in concern is an area where superposed display is effected. Based on a result of the judgement, the control circuit transfers an address from the read address generating part as it is when the area in concern is outside said area, while it adds, when within said area, a difference between a head storage address of superposing display data and that of superposed display data to the address from said read address generating part to transfer into the video memory (2).
EP86108650A 1985-06-25 1986-06-25 Control circuit of raster scanning display unit Expired - Lifetime EP0206328B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86108650T ATE90469T1 (en) 1985-06-25 1986-06-25 CONTROL UNIT FOR A DISPLAY UNIT WORKING ACCORDING TO THE RATCHET METHOD.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60136838A JPS61295594A (en) 1985-06-25 1985-06-25 Control system for display unit
JP136838/85 1985-06-25

Publications (3)

Publication Number Publication Date
EP0206328A2 EP0206328A2 (en) 1986-12-30
EP0206328A3 true EP0206328A3 (en) 1990-05-02
EP0206328B1 EP0206328B1 (en) 1993-06-09

Family

ID=15184683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108650A Expired - Lifetime EP0206328B1 (en) 1985-06-25 1986-06-25 Control circuit of raster scanning display unit

Country Status (4)

Country Link
EP (1) EP0206328B1 (en)
JP (1) JPS61295594A (en)
AT (1) ATE90469T1 (en)
DE (1) DE3688540T2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63169687A (en) * 1987-01-07 1988-07-13 ブラザー工業株式会社 display device
JPS63130791U (en) * 1987-02-17 1988-08-26
JPH01193796A (en) * 1988-01-29 1989-08-03 Hitachi Ltd Display controller
JPH0213997A (en) * 1988-07-01 1990-01-18 Matsushita Electric Ind Co Ltd Image display controller
JPH0285482U (en) * 1988-12-20 1990-07-04
DE69328399T2 (en) * 1992-09-30 2000-10-19 Hudson Soft Co. Ltd., Sapporo Voice data processing
US5459485A (en) * 1992-10-01 1995-10-17 Hudson Soft Co., Ltd. Image and sound processing apparatus
JP4742508B2 (en) * 2003-03-31 2011-08-10 セイコーエプソン株式会社 Image display device
JP2009206601A (en) 2008-02-26 2009-09-10 Funai Electric Co Ltd Information distribution system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984001655A1 (en) * 1982-10-07 1984-04-26 Western Electric Co Dynamic generation and overlaying of graphic windows for multiple active program storage areas
GB2141908A (en) * 1983-05-25 1985-01-03 Westinghouse Electric Corp Multi-level raster scan display arrangement
GB2144952A (en) * 1983-07-08 1985-03-13 Sharp Kk Multiwindow display circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984001655A1 (en) * 1982-10-07 1984-04-26 Western Electric Co Dynamic generation and overlaying of graphic windows for multiple active program storage areas
GB2141908A (en) * 1983-05-25 1985-01-03 Westinghouse Electric Corp Multi-level raster scan display arrangement
GB2144952A (en) * 1983-07-08 1985-03-13 Sharp Kk Multiwindow display circuit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ACM TRANSACTIONS ON GRAPHICS, vol. 2, no. 2, April 1983, pages 135-160, New York, US; R. PIKE: "Graphics in overlapping bitmap layers" *

Also Published As

Publication number Publication date
ATE90469T1 (en) 1993-06-15
DE3688540T2 (en) 1993-10-07
DE3688540D1 (en) 1993-07-15
EP0206328A2 (en) 1986-12-30
EP0206328B1 (en) 1993-06-09
JPS61295594A (en) 1986-12-26

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