FR2362365A2 - Electronic digitiser for graphical analogue data - uses cursor movable over grid winding to generate signal with position dependent phase angle - Google Patents

Electronic digitiser for graphical analogue data - uses cursor movable over grid winding to generate signal with position dependent phase angle

Info

Publication number
FR2362365A2
FR2362365A2 FR7725250A FR7725250A FR2362365A2 FR 2362365 A2 FR2362365 A2 FR 2362365A2 FR 7725250 A FR7725250 A FR 7725250A FR 7725250 A FR7725250 A FR 7725250A FR 2362365 A2 FR2362365 A2 FR 2362365A2
Authority
FR
France
Prior art keywords
phase angle
digitiser
electronic
movable over
graphical
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
FR7725250A
Other languages
French (fr)
Other versions
FR2362365B2 (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.)
Data Automation Corp
Original Assignee
Data Automation Corp
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 US05/716,039 external-priority patent/US4054746A/en
Application filed by Data Automation Corp filed Critical Data Automation Corp
Publication of FR2362365A2 publication Critical patent/FR2362365A2/en
Application granted granted Critical
Publication of FR2362365B2 publication Critical patent/FR2362365B2/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/249—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using pulse code

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Human Computer Interaction (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

An electronic position measuring system is used in a digitiser which converts analogue information in graphical form to digital information. The system provides small scale of fine measurement by means of a polyphase grid winding with pulsed polyphase excitation. A cursor is movable over the grid winding and develops a position signal which has a phase angle corresponding to the position within a grid cycle. Phase angle measuring circuitry is provided to drive the position information. The system also includes a large scale or coarse measurement grid comprising several parallel conductors with at least one conductor per grid cycle.
FR7725250A 1976-08-20 1977-08-18 Electronic digitiser for graphical analogue data - uses cursor movable over grid winding to generate signal with position dependent phase angle Granted FR2362365A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/716,039 US4054746A (en) 1975-10-22 1976-08-20 Electronic coordinate position digitizing system

Publications (2)

Publication Number Publication Date
FR2362365A2 true FR2362365A2 (en) 1978-03-17
FR2362365B2 FR2362365B2 (en) 1983-07-22

Family

ID=24876478

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7725250A Granted FR2362365A2 (en) 1976-08-20 1977-08-18 Electronic digitiser for graphical analogue data - uses cursor movable over grid winding to generate signal with position dependent phase angle

Country Status (3)

Country Link
DE (1) DE2731321C3 (en)
FR (1) FR2362365A2 (en)
SE (1) SE7709176L (en)

Also Published As

Publication number Publication date
SE7709176L (en) 1978-02-21
DE2731321A1 (en) 1978-02-23
DE2731321C3 (en) 1981-06-25
DE2731321B2 (en) 1980-10-23
FR2362365B2 (en) 1983-07-22

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Legal Events

Date Code Title Description
TP Transmission of property
ER Errata listed in the french official journal (bopi)

Free format text: 16/78