EP0287402A3 - Electronic control unit - Google Patents

Electronic control unit Download PDF

Info

Publication number
EP0287402A3
EP0287402A3 EP88303461A EP88303461A EP0287402A3 EP 0287402 A3 EP0287402 A3 EP 0287402A3 EP 88303461 A EP88303461 A EP 88303461A EP 88303461 A EP88303461 A EP 88303461A EP 0287402 A3 EP0287402 A3 EP 0287402A3
Authority
EP
European Patent Office
Prior art keywords
control unit
code signal
external
code
electronic control
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.)
Withdrawn
Application number
EP88303461A
Other languages
German (de)
French (fr)
Other versions
EP0287402A2 (en
Inventor
Glen David Smith
Michael John Parr
Colin Francis Johnson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0287402A2 publication Critical patent/EP0287402A2/en
Publication of EP0287402A3 publication Critical patent/EP0287402A3/en
Withdrawn legal-status Critical Current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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Selective Calling Equipment (AREA)
  • Lock And Its Accessories (AREA)

Abstract

An electronic control unit has means for receiving an external inhibit code signal (20), an internal code generator (10), means for comparing (30) the external inhibit code signal with a signal or signals produced from the internal code generator, and means for inhibiting (40) the operation of an alarm device which device will be activated if a correct external inhibit code signal is not received periodically by the control unit. A binary digital code word of 27 bits is described, of which the first 13 bits consist of a unique code, and the last 14 bits are synchronisation bits. This enables the external code signal to be synchronised with the internal code signal. The electronic control unit has been developed for use as a security switch, enabling the external code generator to be provided either in the form of a key or key-card which is placed in physical contact with a lock controlled by the electronic control unit, or in the form of a transmitter which transmits the appropriate code signal to a receiver which controls an alarm device, such that if the receiver does not receive the correct inhibit code signal at specified intervals, the alarm circuit will no longer be prevented from operating, and an alarm will be activated, or the alarm circuit can be used to disable the device, for example to disable the ignition of a motor vehicle.
EP88303461A 1987-04-16 1988-04-18 Electronic control unit Withdrawn EP0287402A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ220025 1987-04-16
NZ22002587 1987-04-16

Publications (2)

Publication Number Publication Date
EP0287402A2 EP0287402A2 (en) 1988-10-19
EP0287402A3 true EP0287402A3 (en) 1990-02-07

Family

ID=19922037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88303461A Withdrawn EP0287402A3 (en) 1987-04-16 1988-04-18 Electronic control unit

Country Status (2)

Country Link
EP (1) EP0287402A3 (en)
AU (1) AU1466888A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291242A (en) * 1994-06-16 1996-01-17 Ford Motor Co Motor vehicle alarm and immobilisation system
EP1398293A3 (en) 1995-03-10 2005-02-09 Michael C. Ryan Fluid delivery control nozzle
DE19539667A1 (en) * 1995-10-25 1997-04-30 Helga Stein Electro-mechanical switchgear, especially alarm system
AU2003900627A0 (en) * 2003-02-13 2003-02-27 Aleis Trakit Pty Ltd Security systems
DE102004013429A1 (en) * 2004-03-18 2005-10-13 Infineon Technologies Ag Monitoring device for monitoring internal signals during initialization of an electronic circuit unit

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2023896A (en) * 1978-06-23 1980-01-03 Moeller As I C Alarm systems
US4206449A (en) * 1977-07-27 1980-06-03 American District Telegraph Company Multiple sensor intrusion alarm system
US4246573A (en) * 1978-05-05 1981-01-20 Kiss Laszlo A Protection system for electronic gear
US4260982A (en) * 1979-10-25 1981-04-07 Debenedictis Angelo P Pulse code modulation responsive alarm system
GB1595797A (en) * 1978-04-21 1981-08-19 Pushman Hugh John Security systems
US4290055A (en) * 1979-12-05 1981-09-15 Technical Development Ltd Scanning control system
EP0218251A1 (en) * 1985-10-11 1987-04-15 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Safety device for motor vehicles
EP0242983A2 (en) * 1986-04-21 1987-10-28 Unisys Corporation Transponder based positioning system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4206449A (en) * 1977-07-27 1980-06-03 American District Telegraph Company Multiple sensor intrusion alarm system
GB1595797A (en) * 1978-04-21 1981-08-19 Pushman Hugh John Security systems
US4246573A (en) * 1978-05-05 1981-01-20 Kiss Laszlo A Protection system for electronic gear
GB2023896A (en) * 1978-06-23 1980-01-03 Moeller As I C Alarm systems
US4260982A (en) * 1979-10-25 1981-04-07 Debenedictis Angelo P Pulse code modulation responsive alarm system
US4290055A (en) * 1979-12-05 1981-09-15 Technical Development Ltd Scanning control system
EP0218251A1 (en) * 1985-10-11 1987-04-15 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Safety device for motor vehicles
EP0242983A2 (en) * 1986-04-21 1987-10-28 Unisys Corporation Transponder based positioning system

Also Published As

Publication number Publication date
AU1466888A (en) 1988-10-20
EP0287402A2 (en) 1988-10-19

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