GB2229344B - Generation of raster scan video signals for an enhanced resolution monitor - Google Patents

Generation of raster scan video signals for an enhanced resolution monitor

Info

Publication number
GB2229344B
GB2229344B GB8823628A GB8823628A GB2229344B GB 2229344 B GB2229344 B GB 2229344B GB 8823628 A GB8823628 A GB 8823628A GB 8823628 A GB8823628 A GB 8823628A GB 2229344 B GB2229344 B GB 2229344B
Authority
GB
United Kingdom
Prior art keywords
generation
video signals
raster scan
scan video
enhanced resolution
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 - Lifetime
Application number
GB8823628A
Other versions
GB2229344A (en
GB8823628D0 (en
Inventor
Anthony John Matthews
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.)
Research Machines PLC
Original Assignee
Research Machines PLC
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 Research Machines PLC filed Critical Research Machines PLC
Priority to GB8823628A priority Critical patent/GB2229344B/en
Publication of GB8823628D0 publication Critical patent/GB8823628D0/en
Priority to EP19890310209 priority patent/EP0363204B1/en
Priority to DE1989625775 priority patent/DE68925775T2/en
Publication of GB2229344A publication Critical patent/GB2229344A/en
Application granted granted Critical
Publication of GB2229344B publication Critical patent/GB2229344B/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
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/28—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using colour tubes
    • G09G1/285—Interfacing with colour displays, e.g. TV receiver
    • 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)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Television Systems (AREA)
GB8823628A 1988-10-07 1988-10-07 Generation of raster scan video signals for an enhanced resolution monitor Expired - Lifetime GB2229344B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8823628A GB2229344B (en) 1988-10-07 1988-10-07 Generation of raster scan video signals for an enhanced resolution monitor
EP19890310209 EP0363204B1 (en) 1988-10-07 1989-10-05 Generation of raster scan video signals for an enhanced resolution monitor
DE1989625775 DE68925775T2 (en) 1988-10-07 1989-10-05 Generation of raster video signals for a monitor with improved resolution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8823628A GB2229344B (en) 1988-10-07 1988-10-07 Generation of raster scan video signals for an enhanced resolution monitor

Publications (3)

Publication Number Publication Date
GB8823628D0 GB8823628D0 (en) 1988-11-16
GB2229344A GB2229344A (en) 1990-09-19
GB2229344B true GB2229344B (en) 1993-03-10

Family

ID=10644897

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8823628A Expired - Lifetime GB2229344B (en) 1988-10-07 1988-10-07 Generation of raster scan video signals for an enhanced resolution monitor

Country Status (3)

Country Link
EP (1) EP0363204B1 (en)
DE (1) DE68925775T2 (en)
GB (1) GB2229344B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5179639A (en) * 1990-06-13 1993-01-12 Massachusetts General Hospital Computer display apparatus for simultaneous display of data of differing resolution
JPH09307744A (en) * 1996-05-10 1997-11-28 Oki Data:Kk Resolution conversion method and resolution conversion device
US10885883B2 (en) * 2017-01-25 2021-01-05 Apple Inc. Electronic device with foveated display system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092973A2 (en) * 1982-04-23 1983-11-02 Texas Instruments Incorporated Graphics video resolution improvement apparatus
EP0258560A2 (en) * 1986-08-25 1988-03-09 International Business Machines Corporation Raster display controller with variable spatial resolution and pixel data depth
EP0264603A2 (en) * 1986-10-14 1988-04-27 International Business Machines Corporation Raster scan digital display system
GB2207029A (en) * 1987-07-14 1989-01-18 Silicongraphics Inc Computer system for converting a higher resolution image to a lower resolution image

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4673929A (en) * 1984-04-16 1987-06-16 Gould Inc. Circuit for processing digital image data in a high resolution raster display system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092973A2 (en) * 1982-04-23 1983-11-02 Texas Instruments Incorporated Graphics video resolution improvement apparatus
EP0258560A2 (en) * 1986-08-25 1988-03-09 International Business Machines Corporation Raster display controller with variable spatial resolution and pixel data depth
EP0264603A2 (en) * 1986-10-14 1988-04-27 International Business Machines Corporation Raster scan digital display system
GB2207029A (en) * 1987-07-14 1989-01-18 Silicongraphics Inc Computer system for converting a higher resolution image to a lower resolution image

Also Published As

Publication number Publication date
EP0363204B1 (en) 1996-02-28
GB2229344A (en) 1990-09-19
EP0363204A2 (en) 1990-04-11
DE68925775D1 (en) 1996-04-04
EP0363204A3 (en) 1991-12-27
DE68925775T2 (en) 1996-09-05
GB8823628D0 (en) 1988-11-16

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20081006