GB1348378A - Apparatus providing signals corresponding to the position of points on a surface - Google Patents

Apparatus providing signals corresponding to the position of points on a surface

Info

Publication number
GB1348378A
GB1348378A GB1348378DA GB1348378A GB 1348378 A GB1348378 A GB 1348378A GB 1348378D A GB1348378D A GB 1348378DA GB 1348378 A GB1348378 A GB 1348378A
Authority
GB
United Kingdom
Prior art keywords
ordinates
pair
points
signals corresponding
elements
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
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.)
Pullan B R
Original Assignee
Pullan B R
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 Pullan B R filed Critical Pullan B R
Publication of GB1348378A publication Critical patent/GB1348378A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/004—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring coordinates of points
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/22—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using plotters

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

1348378 Determining co-ordinates electrically B R PULLAN and C J TAYLOR 13 Dec 1971 [18 Sept 1970] 44581/70 Heading G1N An electrographic tablet comprises a sheet exhibiting high resistivity bonded by conductive elements 4/1, 4/2, 4/3, 4/4, and means for supplying a potential difference alternately between the pair 4/1, 4/2, and the pair 4/3, 4/4. As shown the four elements are in the form of a square, and the supply is switched by relays 7/1, 7/2 so that substantially equipotential parallel lines 8, 9 are alternately obtained. A stylus 11 contacting the tablet provides a two-level output signal whose two levels are indicative of the co-ordinates of the point of contact. This signal is fed to a computer 13. The conductive sheet may be tin oxide on glass or Teledeltos (RTM) paper.
GB1348378D 1970-09-18 1970-09-18 Apparatus providing signals corresponding to the position of points on a surface Expired GB1348378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4458170 1970-09-18

Publications (1)

Publication Number Publication Date
GB1348378A true GB1348378A (en) 1974-03-13

Family

ID=10433952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1348378D Expired GB1348378A (en) 1970-09-18 1970-09-18 Apparatus providing signals corresponding to the position of points on a surface

Country Status (1)

Country Link
GB (1) GB1348378A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132770A (en) * 1982-12-10 1984-07-11 Peter Verschoor Method and device for measuring sets from a drawing
GB2273163A (en) * 1992-12-03 1994-06-08 John Reuben Marshall Cursor control device
DE19643495A1 (en) * 1996-10-22 1998-04-30 Peter Dr Ing Scholz Angular position determination, or its change, for direction indicator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132770A (en) * 1982-12-10 1984-07-11 Peter Verschoor Method and device for measuring sets from a drawing
GB2273163A (en) * 1992-12-03 1994-06-08 John Reuben Marshall Cursor control device
DE19643495A1 (en) * 1996-10-22 1998-04-30 Peter Dr Ing Scholz Angular position determination, or its change, for direction indicator
DE19643495C2 (en) * 1996-10-22 2000-04-27 Peter Scholz Device for detecting an angular position of a direction indicator

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees