[go: up one dir, main page]

CA2052179A1 - Image display system - Google Patents

Image display system

Info

Publication number
CA2052179A1
CA2052179A1 CA 2052179 CA2052179A CA2052179A1 CA 2052179 A1 CA2052179 A1 CA 2052179A1 CA 2052179 CA2052179 CA 2052179 CA 2052179 A CA2052179 A CA 2052179A CA 2052179 A1 CA2052179 A1 CA 2052179A1
Authority
CA
Canada
Prior art keywords
horizontal
display
vertical
image display
display system
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
CA 2052179
Other languages
French (fr)
Other versions
CA2052179C (en
Inventor
Takaharu Nakamura
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.)
NEC Corp
Original Assignee
Individual
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
Priority claimed from JP2254895A external-priority patent/JPH04132480A/en
Priority claimed from JP27991990A external-priority patent/JP2626232B2/en
Application filed by Individual filed Critical Individual
Publication of CA2052179A1 publication Critical patent/CA2052179A1/en
Application granted granted Critical
Publication of CA2052179C publication Critical patent/CA2052179C/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
    • 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
    • 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
    • G09G5/391—Resolution modifying circuits, e.g. variable screen formats

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)

Abstract

An image display system capable of moving, enlarging, reducing or otherwise manipulating an image being displayed on a screen. Display addresses are divided in the horizontal and vertical directions. A horizontal and a vertical display address conversion RAM are each connected to respective one of display address buses so as to convert the display addresses in the horizontal or vertical direction. An additional bit representative of an image display timing may be assigned to each of conversion table data stored in horizontal and vertical address conversion RAMs which are connected to particular one of a plurality of video memories.
CA 2052179 1990-09-25 1991-09-24 Image display system Expired - Fee Related CA2052179C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2-254895 1990-09-25
JP2254895A JPH04132480A (en) 1990-09-25 1990-09-25 Picture display system
JP2-279919 1990-10-18
JP27991990A JP2626232B2 (en) 1990-10-18 1990-10-18 Image multi display method

Publications (2)

Publication Number Publication Date
CA2052179A1 true CA2052179A1 (en) 1992-03-26
CA2052179C CA2052179C (en) 1996-01-16

Family

ID=26541899

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2052179 Expired - Fee Related CA2052179C (en) 1990-09-25 1991-09-24 Image display system

Country Status (3)

Country Link
EP (1) EP0477843B1 (en)
CA (1) CA2052179C (en)
DE (1) DE69120755T2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9424809D0 (en) * 1994-12-08 1995-02-08 Philips Electronics Uk Ltd Variable display rate image coding
JP3377667B2 (en) * 1995-12-25 2003-02-17 株式会社日立製作所 Image display device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309700A (en) * 1980-05-22 1982-01-05 Technology Marketing, Inc. Cathode ray tube controller
DE3381991D1 (en) * 1982-06-28 1990-12-20 Toshiba Kawasaki Kk IMAGE DISPLAY CONTROL DEVICE.

Also Published As

Publication number Publication date
EP0477843A3 (en) 1993-01-27
EP0477843B1 (en) 1996-07-10
DE69120755T2 (en) 1996-11-07
DE69120755D1 (en) 1996-08-14
EP0477843A2 (en) 1992-04-01
CA2052179C (en) 1996-01-16

Similar Documents

Publication Publication Date Title
CA2164269A1 (en) Image processing in which the image is divided into image areas with specific color lookup tables for enhanced color resolution
CA1252877A (en) Picture transformation memory
CA2070934A1 (en) Graphics Display System
JPS589192A (en) Synchronizer
WO1995012164A3 (en) Frame buffer system designed for windowing operations
CA2097557A1 (en) Priority based graphics in an open systems windows environment
EP0279227A3 (en) Raster display vector generator
CA2052179A1 (en) Image display system
GB2180128A (en) Window graphics system
US4766496A (en) Video signal memories
EP0895188A3 (en) Method and apparatus for image scaling
CA2061700A1 (en) Video signal synthesizing system for synthesizing system's own signal and external signal
CA2171468A1 (en) Simplified image reconstruction interface
JP2626232B2 (en) Image multi display method
JPH03196376A (en) Addressing mechanism for parallel access to a plurality of adjacent storage positions from the whole field storage devices
SU1658419A1 (en) Device for processing and displaying halftone color and graphic images
JPS61137186A (en) Display controller
JPS63112897A (en) Semiconductor storage device
JPS58203491A (en) Graphic CRT display circuit
JPH0830949B2 (en) Video signal memory device
JPS5471520A (en) Video display unit
JPH0464177A (en) Image display device
JPH0323584A (en) Picture data storage circuit
JPS649493A (en) Display device
JPH01172893A (en) Image processor

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed