GB2237427B - Security system - Google Patents

Security system

Info

Publication number
GB2237427B
GB2237427B GB9023377A GB9023377A GB2237427B GB 2237427 B GB2237427 B GB 2237427B GB 9023377 A GB9023377 A GB 9023377A GB 9023377 A GB9023377 A GB 9023377A GB 2237427 B GB2237427 B GB 2237427B
Authority
GB
United Kingdom
Prior art keywords
security system
security
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 - Fee Related
Application number
GB9023377A
Other versions
GB2237427A (en
GB9023377D0 (en
Inventor
Philip Hall Bertenshaw
Malcolm John Bugler
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.)
Pac International Ltd
Original Assignee
Pac International 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 Pac International Ltd filed Critical Pac International Ltd
Publication of GB9023377D0 publication Critical patent/GB9023377D0/en
Publication of GB2237427A publication Critical patent/GB2237427A/en
Application granted granted Critical
Publication of GB2237427B publication Critical patent/GB2237427B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
    • G07C9/00904—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses for hotels, motels, office buildings or the like
    • 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
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/27—Individual registration on entry or exit involving the use of a pass with central registration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
GB9023377A 1989-10-28 1990-10-26 Security system Expired - Fee Related GB2237427B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898924341A GB8924341D0 (en) 1989-10-28 1989-10-28 Security system

Publications (3)

Publication Number Publication Date
GB9023377D0 GB9023377D0 (en) 1990-12-05
GB2237427A GB2237427A (en) 1991-05-01
GB2237427B true GB2237427B (en) 1993-07-07

Family

ID=10665359

Family Applications (2)

Application Number Title Priority Date Filing Date
GB898924341A Pending GB8924341D0 (en) 1989-10-28 1989-10-28 Security system
GB9023377A Expired - Fee Related GB2237427B (en) 1989-10-28 1990-10-26 Security system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB898924341A Pending GB8924341D0 (en) 1989-10-28 1989-10-28 Security system

Country Status (4)

Country Link
EP (1) EP0426387A3 (en)
DE (1) DE426387T1 (en)
ES (1) ES2024401A4 (en)
GB (2) GB8924341D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996027858A1 (en) * 1995-03-08 1996-09-12 Keba Gesellschaft Mbh & Co. Access control system with an access control device and a housing, and a process for monitoring access authorisation
US6476708B1 (en) 1998-03-20 2002-11-05 Hid Corporation Detection of an RFID device by an RF reader unit operating in a reduced power state
US7782209B2 (en) 2006-03-31 2010-08-24 Assa Abloy Ab Detection signal generator circuit for an RFID reader
US8063746B2 (en) 2006-03-31 2011-11-22 Assa Abloy Ab Transponder detector for an RFID system generating a progression of detection signals
US8203429B2 (en) 2008-04-01 2012-06-19 Assa Abloy Ab Switched capacitance method for the detection of, and subsequent communication with a wireless transponder device using a single antenna

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147284A1 (en) * 1983-12-16 1985-07-03 Jacques Lewiner Operating and controlling systems for a plurality of accesses equipped with coded locks

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2069582A (en) * 1980-02-07 1981-08-26 British Relay Electronics Ltd Door locking system
EP0239342A3 (en) * 1986-03-21 1988-12-07 Emhart Industries, Inc. Electronic locking systems

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147284A1 (en) * 1983-12-16 1985-07-03 Jacques Lewiner Operating and controlling systems for a plurality of accesses equipped with coded locks

Also Published As

Publication number Publication date
GB8924341D0 (en) 1989-12-13
DE426387T1 (en) 1992-01-16
EP0426387A2 (en) 1991-05-08
EP0426387A3 (en) 1991-06-12
ES2024401A4 (en) 1992-03-01
GB2237427A (en) 1991-05-01
GB9023377D0 (en) 1990-12-05

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Legal Events

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

Effective date: 19971026