ATE395226T1 - Verfahren und vorrichtung zum empfang eines amplitudenmodulierten funksignals - Google Patents

Verfahren und vorrichtung zum empfang eines amplitudenmodulierten funksignals

Info

Publication number
ATE395226T1
ATE395226T1 AT01271296T AT01271296T ATE395226T1 AT E395226 T1 ATE395226 T1 AT E395226T1 AT 01271296 T AT01271296 T AT 01271296T AT 01271296 T AT01271296 T AT 01271296T AT E395226 T1 ATE395226 T1 AT E395226T1
Authority
AT
Austria
Prior art keywords
signal
microprocessor
channel
channels
receiving
Prior art date
Application number
AT01271296T
Other languages
English (en)
Inventor
Patrick Lyons
Jeremy Greenwood
Original Assignee
Hi Key Ltd
Land Rover Uk 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 Hi Key Ltd, Land Rover Uk Ltd filed Critical Hi Key Ltd
Application granted granted Critical
Publication of ATE395226T1 publication Critical patent/ATE395226T1/de

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
    • 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
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0091—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with means for scanning over a band of frequencies
    • 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
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • G07C2009/00238—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks the transmittted data signal containing a code which is changed
    • 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
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G07C2009/00555—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks comprising means to detect or avoid relay attacks
    • 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
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G07C2009/00793—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by Hertzian waves
    • 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
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/61—Signal comprising different frequencies, e.g. frequency hopping

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Noise Elimination (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Circuits Of Receivers In General (AREA)
AT01271296T 2000-12-20 2001-12-20 Verfahren und vorrichtung zum empfang eines amplitudenmodulierten funksignals ATE395226T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE20001054 2000-12-20

Publications (1)

Publication Number Publication Date
ATE395226T1 true ATE395226T1 (de) 2008-05-15

Family

ID=11042700

Family Applications (1)

Application Number Title Priority Date Filing Date
AT01271296T ATE395226T1 (de) 2000-12-20 2001-12-20 Verfahren und vorrichtung zum empfang eines amplitudenmodulierten funksignals

Country Status (7)

Country Link
US (1) US7099638B2 (de)
EP (1) EP1343664B1 (de)
AT (1) ATE395226T1 (de)
AU (1) AU2002222441A1 (de)
DE (1) DE60134038D1 (de)
IE (1) IES20011092A2 (de)
WO (1) WO2002049888A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7359448B2 (en) * 2002-08-21 2008-04-15 Lear Corporation Remote transmitter system and method
DE10301146B4 (de) * 2003-01-14 2014-07-10 Robert Bosch Gmbh Ein Sicherheitssystem
US6990324B2 (en) * 2004-04-15 2006-01-24 Flarion Technologies, Inc. Methods and apparatus for selecting between multiple carriers using a single receiver chain tuned to a single carrier
US20060045018A1 (en) * 2004-08-25 2006-03-02 Ahmad Masri Device, system and method for varying scanning time on a channel
KR100765319B1 (ko) * 2005-09-13 2007-10-09 삼성전자주식회사 방송 시스템의 채널 탐색 방법 및 그 장치
US7577412B2 (en) * 2005-12-23 2009-08-18 Intermec Ip Corp. System and method for detecting narrow bandwidth signal content to determine channel occupancy
US8111133B2 (en) * 2007-03-16 2012-02-07 Homerun Holdings Corporation System for processing multiple signal frequencies and data formats for a barrier operator
JP5109813B2 (ja) * 2008-05-30 2012-12-26 アイコム株式会社 周波数スキャン方法及び受信機
DE102014010002A1 (de) * 2014-07-05 2016-01-07 Audi Ag Vorrichtung zum Steuern einer Einrichtung eines Kraftfahrzeugs, zugehörige Einrichtung und Betriebsverfahren
US9792744B2 (en) * 2015-06-01 2017-10-17 Schlage Lock Company Llc Antenna diversity implementation for wireless locks

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6411408A (en) * 1987-07-03 1989-01-17 Nec Corp Automatic frequency sweeping method for frequency synthesizer type channel selecting device
US5161168A (en) * 1991-05-15 1992-11-03 Scs Mobilecom, Inc. Spread spectrum CDMA communications system microwave overlay
US5587715A (en) * 1993-03-19 1996-12-24 Gps Mobile, Inc. Method and apparatus for tracking a moving object
US5621767A (en) * 1994-09-30 1997-04-15 Hughes Electronics Method and device for locking on a carrier signal by dividing frequency band into segments for segment signal quality determination and selecting better signal quality segment
GB9816170D0 (en) * 1997-12-20 1998-09-23 Rover Group A security system
US6173166B1 (en) * 1998-06-29 2001-01-09 Visteon Global Technologies, Inc. Detection and correction of multipath in an FM receiver
WO2000038320A1 (en) * 1998-12-22 2000-06-29 Hi-Key Limited A receiver and a variable frequency signal generating circuit for the receiver
US6560270B1 (en) * 1999-03-04 2003-05-06 Northrop Grumman Corporation Method for tuning a spread spectrum receiver
US6804262B1 (en) * 2000-04-28 2004-10-12 3Com Corporation Method and apparatus for channel determination through power measurements

Also Published As

Publication number Publication date
US20040041692A1 (en) 2004-03-04
WO2002049888A1 (en) 2002-06-27
DE60134038D1 (de) 2008-06-26
US7099638B2 (en) 2006-08-29
EP1343664A1 (de) 2003-09-17
EP1343664B1 (de) 2008-05-14
IES20011092A2 (en) 2002-07-10
AU2002222441A1 (en) 2002-07-01

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Legal Events

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