AU538296B2 - Magnetic key system - Google Patents

Magnetic key system

Info

Publication number
AU538296B2
AU538296B2 AU78452/81A AU7845281A AU538296B2 AU 538296 B2 AU538296 B2 AU 538296B2 AU 78452/81 A AU78452/81 A AU 78452/81A AU 7845281 A AU7845281 A AU 7845281A AU 538296 B2 AU538296 B2 AU 538296B2
Authority
AU
Australia
Prior art keywords
key system
magnetic key
magnetic
key
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.)
Ceased
Application number
AU78452/81A
Other versions
AU7845281A (en
Inventor
Robert Ian Bye
Anthony George Martin
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.)
General Motors Holdens Automotive Pty Ltd
Original Assignee
General Motors Holdens Pty 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
Application filed by General Motors Holdens Pty Ltd filed Critical General Motors Holdens Pty Ltd
Priority to AU78452/81A priority Critical patent/AU538296B2/en
Publication of AU7845281A publication Critical patent/AU7845281A/en
Application granted granted Critical
Publication of AU538296B2 publication Critical patent/AU538296B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
    • G07C9/00722—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with magnetic components, e.g. magnets, magnetic strips, metallic inserts
    • G07C9/00738—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with magnetic components, e.g. magnets, magnetic strips, metallic inserts sensed by Hall effect devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/087—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors flux-sensitive, e.g. magnetic, detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
AU78452/81A 1980-12-11 1980-12-11 Magnetic key system Ceased AU538296B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU78452/81A AU538296B2 (en) 1980-12-11 1980-12-11 Magnetic key system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU78452/81A AU538296B2 (en) 1980-12-11 1980-12-11 Magnetic key system
AUPE6901 1980-12-11
AU690180 1980-12-11

Publications (2)

Publication Number Publication Date
AU7845281A AU7845281A (en) 1982-06-17
AU538296B2 true AU538296B2 (en) 1984-08-09

Family

ID=25612048

Family Applications (1)

Application Number Title Priority Date Filing Date
AU78452/81A Ceased AU538296B2 (en) 1980-12-11 1980-12-11 Magnetic key system

Country Status (1)

Country Link
AU (1) AU538296B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0382412A2 (en) * 1989-02-09 1990-08-16 Citic Industries Limited Locking system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0382412A2 (en) * 1989-02-09 1990-08-16 Citic Industries Limited Locking system
EP0382412A3 (en) * 1989-02-09 1991-10-09 Citic Industries Limited Locking system

Also Published As

Publication number Publication date
AU7845281A (en) 1982-06-17

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