CA1239716A - Method and apparatus for generating a set of signals representing a curve - Google Patents

Method and apparatus for generating a set of signals representing a curve

Info

Publication number
CA1239716A
CA1239716A CA000490395A CA490395A CA1239716A CA 1239716 A CA1239716 A CA 1239716A CA 000490395 A CA000490395 A CA 000490395A CA 490395 A CA490395 A CA 490395A CA 1239716 A CA1239716 A CA 1239716A
Authority
CA
Canada
Prior art keywords
knots
knot
data
outline
curve
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
Application number
CA000490395A
Other languages
English (en)
French (fr)
Inventor
Ricky J. Schrieber
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Linotype 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
Priority claimed from US06/649,095 external-priority patent/US4623977A/en
Priority claimed from US06/649,088 external-priority patent/US4686633A/en
Priority claimed from US06/649,021 external-priority patent/US4686635A/en
Application filed by Linotype Co Ltd filed Critical Linotype Co Ltd
Application granted granted Critical
Publication of CA1239716A publication Critical patent/CA1239716A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
    • B41B19/00—Photoelectronic composing machines
    • B41B19/01—Photoelectronic composing machines having electron-beam tubes producing an image of at least one character which is photographed
    • 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
    • G09G1/06—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 single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows
    • G09G1/14—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 single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
CA000490395A 1984-09-10 1985-09-10 Method and apparatus for generating a set of signals representing a curve Expired CA1239716A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US649,088 1984-09-10
US06/649,095 US4623977A (en) 1984-09-10 1984-09-10 Method and apparatus for linear interpolation
US06/649,088 US4686633A (en) 1984-09-10 1984-09-10 Method and apparatus for generating a set of signals representing a curve
US06/649,021 US4686635A (en) 1984-09-10 1984-09-10 Method and apparatus for generating a set of signals representing a curve
US649,021 1984-09-10
US649,095 1984-09-10

Publications (1)

Publication Number Publication Date
CA1239716A true CA1239716A (en) 1988-07-26

Family

ID=27417819

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000490395A Expired CA1239716A (en) 1984-09-10 1985-09-10 Method and apparatus for generating a set of signals representing a curve

Country Status (3)

Country Link
EP (1) EP0175178B1 (de)
CA (1) CA1239716A (de)
DE (1) DE3585902D1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029947A (en) * 1973-05-11 1977-06-14 Rockwell International Corporation Character generating method and system
US4199815A (en) * 1978-05-12 1980-04-22 Electra Corporation Typesetter character generating apparatus
US4331955A (en) * 1980-08-07 1982-05-25 Eltra Corporation Method and apparatus for smoothing outlines
US4674058A (en) * 1981-12-07 1987-06-16 Dicomed Corporation Method and apparatus for flexigon representation of a two dimensional figure

Also Published As

Publication number Publication date
EP0175178B1 (de) 1992-04-22
EP0175178A3 (en) 1987-10-14
DE3585902D1 (de) 1992-05-27
EP0175178A2 (de) 1986-03-26

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Legal Events

Date Code Title Description
MKEX Expiry