GB1528578A - Position indicator - Google Patents

Position indicator

Info

Publication number
GB1528578A
GB1528578A GB5020074A GB5020074A GB1528578A GB 1528578 A GB1528578 A GB 1528578A GB 5020074 A GB5020074 A GB 5020074A GB 5020074 A GB5020074 A GB 5020074A GB 1528578 A GB1528578 A GB 1528578A
Authority
GB
United Kingdom
Prior art keywords
coils
indicating member
coil
ordinate
nov
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
GB5020074A
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB5020074A priority Critical patent/GB1528578A/en
Priority to US05/632,176 priority patent/US4029899A/en
Publication of GB1528578A publication Critical patent/GB1528578A/en
Expired 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
    • G06F3/047—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using sets of wires, e.g. crossed wires
    • 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

Landscapes

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

Abstract

1528578 Position indicating apparatus NATIONAL RESEARCH DEVELOPMENT CORP 17 Nov 1975 [20 Nov 1974 27 May 1975] 50200/74 and 23141/75 Heading G1N An apparatus for generating a signal representative of a co-ordinate of a movable indicating member 10 which is constructed to interact with magnetic flux comprises a plurality of sensing or driving coils 15 positioned substantially in or adjacent to a surface in or adjacent to which the indicating member 10 may be moved, and being positioned to divide an area of interest in the surface into regions with each region within an arrangement of coils 15 particular to that region and a further coil surrounding the entire area of interest. Means responsive to the change in flux linking the coils and the indicating member provide a signal representative of the co-ordinate of the indicating member. The coils may overlap or be positioned side by side. Several examples of combinations of superimposed coils in embodiments of the invention are disclosed, Figs. 6 to 8 (not shown). Each coil may correspond to a function in a set of independent binary functions, or a function in a set of Walsh functions or a number in a series of numbers forming a pseudo random sequence of such numbers or a number in a row or column of a Hedanard matrix. The indicating member may be a magnet of a coil surrounding a magnetic material, Figs. 9a and 9b (not shown) and in the latter case the member is a ball point pen, pressure on the ball causing a switch to close to allow energization of the coil. A flux guide 16 may be provided.
GB5020074A 1974-11-20 1974-11-20 Position indicator Expired GB1528578A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB5020074A GB1528578A (en) 1974-11-20 1974-11-20 Position indicator
US05/632,176 US4029899A (en) 1974-11-20 1975-11-14 Position indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5020074A GB1528578A (en) 1974-11-20 1974-11-20 Position indicator

Publications (1)

Publication Number Publication Date
GB1528578A true GB1528578A (en) 1978-10-11

Family

ID=10455050

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5020074A Expired GB1528578A (en) 1974-11-20 1974-11-20 Position indicator

Country Status (1)

Country Link
GB (1) GB1528578A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029664A1 (en) * 1979-11-07 1981-06-03 Ferranti plc Apparatus for generating a signal representative of a co-ordinate position of a movable indicating member
GB2148041A (en) * 1983-10-26 1985-05-22 Sharp Kk Display systems
GB2183071A (en) * 1985-11-05 1987-05-28 Nat Res Dev Apparatus for capturing information in drawing or writing
EP0253993A2 (en) * 1986-05-28 1988-01-27 Hitachi, Ltd. Position coordinate determining apparatus
GB2208733A (en) * 1985-11-05 1989-04-12 Nat Res Dev Apparatus for capturing information in drawing or writing
GB2228122A (en) * 1985-11-05 1990-08-15 Nat Res Dev A writing instrument for use in capturing drawing or writing
US4963859A (en) * 1987-02-02 1990-10-16 National Research Development Corporation Method and apparatus for capturing information in drawing or writing
US5027414A (en) * 1987-01-20 1991-06-25 National Research Development Corporation Method and apparatus for capturing information in drawing or writing
WO2003005293A2 (en) * 2001-06-29 2003-01-16 Hans Rudolf Sterling Apparatus for sensing the position of a pointing object
EP1349055A2 (en) * 2002-02-05 2003-10-01 Aiptek International Inc. Layout for multiple loop antennas

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029664A1 (en) * 1979-11-07 1981-06-03 Ferranti plc Apparatus for generating a signal representative of a co-ordinate position of a movable indicating member
GB2148041A (en) * 1983-10-26 1985-05-22 Sharp Kk Display systems
GB2208734B (en) * 1985-11-05 1990-11-07 Nat Res Dev Apparatus for capturing information in drawing or writing
GB2183071B (en) * 1985-11-05 1990-11-07 Nat Res Dev Method and apparatus for capturing information in drawing or writing
GB2208733A (en) * 1985-11-05 1989-04-12 Nat Res Dev Apparatus for capturing information in drawing or writing
GB2208734A (en) * 1985-11-05 1989-04-12 Nat Res Dev Apparatus for capturing information in drawing or writing
US5107541A (en) * 1985-11-05 1992-04-21 National Research Development Corporation Method and apparatus for capturing information in drawing or writing
GB2228122A (en) * 1985-11-05 1990-08-15 Nat Res Dev A writing instrument for use in capturing drawing or writing
GB2183071A (en) * 1985-11-05 1987-05-28 Nat Res Dev Apparatus for capturing information in drawing or writing
GB2228122B (en) * 1985-11-05 1990-11-07 Nat Res Dev A writing instrument for use in capturing information in drawing or writing
GB2208733B (en) * 1985-11-05 1990-11-07 Nat Res Dev A writing instrument for use in capturing information in drawing or writing
EP0253993A2 (en) * 1986-05-28 1988-01-27 Hitachi, Ltd. Position coordinate determining apparatus
EP0253993A3 (en) * 1986-05-28 1990-02-14 Hitachi, Ltd. Position coordinate determining apparatus
US5027414A (en) * 1987-01-20 1991-06-25 National Research Development Corporation Method and apparatus for capturing information in drawing or writing
US4963859A (en) * 1987-02-02 1990-10-16 National Research Development Corporation Method and apparatus for capturing information in drawing or writing
WO2003005293A2 (en) * 2001-06-29 2003-01-16 Hans Rudolf Sterling Apparatus for sensing the position of a pointing object
WO2003005293A3 (en) * 2001-06-29 2004-07-22 Hans Rudolf Sterling Apparatus for sensing the position of a pointing object
EP1349055A2 (en) * 2002-02-05 2003-10-01 Aiptek International Inc. Layout for multiple loop antennas
EP1349055A3 (en) * 2002-02-05 2006-03-08 Aiptek International Inc. Layout for multiple loop antennas

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee