GB2021905A - Display systems and control systems therefor - Google Patents

Display systems and control systems therefor

Info

Publication number
GB2021905A
GB2021905A GB7916123A GB7916123A GB2021905A GB 2021905 A GB2021905 A GB 2021905A GB 7916123 A GB7916123 A GB 7916123A GB 7916123 A GB7916123 A GB 7916123A GB 2021905 A GB2021905 A GB 2021905A
Authority
GB
United Kingdom
Prior art keywords
image
systems
defining
therefor
coordinates
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
GB7916123A
Other versions
GB2021905B (en
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.)
Smiths Group PLC
Original Assignee
Smiths Group 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 Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB7916123A priority Critical patent/GB2021905B/en
Publication of GB2021905A publication Critical patent/GB2021905A/en
Application granted granted Critical
Publication of GB2021905B publication Critical patent/GB2021905B/en
Expired 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
    • G09G5/20—Function-generator circuits, e.g. circle generators line or curve smoothing circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

In a cathode-ray tube or other display system, signals defining the coordinates xpy'q of the element of the screen on which the cathode-ray beam is incident in its raster scan are supplied to a comparator together with signals defining the coordinates XY of a series of points defining the image 14 to be displayed. The comparator derives a brightness-weighting signal B totaller in respect of each element in accordance with the proximity of that element to those of the points defining the image 14 within a predetermined proximity a. The predetermined proximity may be equal to the separation between the points defining the image 14. <IMAGE>
GB7916123A 1978-05-12 1979-05-12 Display systems and control systems therefor Expired GB2021905B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7916123A GB2021905B (en) 1978-05-12 1979-05-12 Display systems and control systems therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1929678 1978-05-12
GB7916123A GB2021905B (en) 1978-05-12 1979-05-12 Display systems and control systems therefor

Publications (2)

Publication Number Publication Date
GB2021905A true GB2021905A (en) 1979-12-05
GB2021905B GB2021905B (en) 1982-03-31

Family

ID=26253972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7916123A Expired GB2021905B (en) 1978-05-12 1979-05-12 Display systems and control systems therefor

Country Status (1)

Country Link
GB (1) GB2021905B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479622A1 (en) * 1980-03-28 1981-10-02 Sfena METHOD FOR SMOOTHING CURVES GENERATED BY TELEVISION SCANNING
EP0137108A1 (en) * 1981-05-22 1985-04-17 The Marconi Company Limited A raster display system
EP0151544A2 (en) * 1984-01-30 1985-08-14 Sextant Avionique Method and apparatus for smooth curve generation on a raster scan display
EP0313329A2 (en) * 1987-10-23 1989-04-26 Rockwell International Corporation Automatic synthetic dot flair for matrix addressed displays
GB2214765A (en) * 1988-01-29 1989-09-06 Tektronix Inc Raster scan waveform display with pixel intensity gradation

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479622A1 (en) * 1980-03-28 1981-10-02 Sfena METHOD FOR SMOOTHING CURVES GENERATED BY TELEVISION SCANNING
EP0037320A1 (en) * 1980-03-28 1981-10-07 Societe Francaise D'equipements Pour La Navigation Aerienne (S.F.E.N.A.) Method of representing graphics on a television screen
EP0137108A1 (en) * 1981-05-22 1985-04-17 The Marconi Company Limited A raster display system
EP0151544A2 (en) * 1984-01-30 1985-08-14 Sextant Avionique Method and apparatus for smooth curve generation on a raster scan display
EP0151544A3 (en) * 1984-01-30 1990-01-10 Societe Francaise D'equipements Pour La Navigation Aerienne (S.F.E.N.A.) Method and apparatus for smooth curve generating on a visualisation surface with mesh net
EP0313329A2 (en) * 1987-10-23 1989-04-26 Rockwell International Corporation Automatic synthetic dot flair for matrix addressed displays
EP0313329A3 (en) * 1987-10-23 1989-12-27 Rockwell International Corporation Automatic synthetic dot flair for matrix addressed displays
GB2214765A (en) * 1988-01-29 1989-09-06 Tektronix Inc Raster scan waveform display with pixel intensity gradation
GB2214765B (en) * 1988-01-29 1992-01-02 Tektronix Inc Raster scan waveform display with pixel intensity gradation

Also Published As

Publication number Publication date
GB2021905B (en) 1982-03-31

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Legal Events

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

Effective date: 19990511