FR2740635B1 - CODE TRANSMITTER, ESPECIALLY FOR AN ANTI-THEFT SYSTEM OF A MOTOR VEHICLE - Google Patents

CODE TRANSMITTER, ESPECIALLY FOR AN ANTI-THEFT SYSTEM OF A MOTOR VEHICLE

Info

Publication number
FR2740635B1
FR2740635B1 FR9612824A FR9612824A FR2740635B1 FR 2740635 B1 FR2740635 B1 FR 2740635B1 FR 9612824 A FR9612824 A FR 9612824A FR 9612824 A FR9612824 A FR 9612824A FR 2740635 B1 FR2740635 B1 FR 2740635B1
Authority
FR
France
Prior art keywords
motor vehicle
theft system
code transmitter
transmitter
code
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
FR9612824A
Other languages
French (fr)
Other versions
FR2740635A1 (en
Inventor
Reiner Grimm
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2740635A1 publication Critical patent/FR2740635A1/en
Application granted granted Critical
Publication of FR2740635B1 publication Critical patent/FR2740635B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits
    • 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
    • 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
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/04—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
    • H03B5/362—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device the amplifier being a single transistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003—Circuit elements of oscillators
    • H03B2200/0048—Circuit elements of oscillators including measures to switch the frequency band, e.g. by harmonic selection
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003—Circuit elements of oscillators
    • H03B2200/005—Circuit elements of oscillators including measures to switch a capacitor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003—Circuit elements of oscillators
    • H03B2200/0056—Circuit elements of oscillators including a diode used for switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/03—Constructional details, e.g. casings, housings
    • H04B1/034—Portable transmitters
FR9612824A 1995-10-26 1996-10-22 CODE TRANSMITTER, ESPECIALLY FOR AN ANTI-THEFT SYSTEM OF A MOTOR VEHICLE Expired - Fee Related FR2740635B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19539939A DE19539939B4 (en) 1995-10-26 1995-10-26 Code transmitter, in particular for an anti-theft protection system of a motor vehicle

Publications (2)

Publication Number Publication Date
FR2740635A1 FR2740635A1 (en) 1997-04-30
FR2740635B1 true FR2740635B1 (en) 2004-10-22

Family

ID=7775880

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9612824A Expired - Fee Related FR2740635B1 (en) 1995-10-26 1996-10-22 CODE TRANSMITTER, ESPECIALLY FOR AN ANTI-THEFT SYSTEM OF A MOTOR VEHICLE

Country Status (2)

Country Link
DE (1) DE19539939B4 (en)
FR (1) FR2740635B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19753999A1 (en) 1997-12-05 1999-06-17 Siemens Ag Portable handheld transmitter, in particular for a remote-controlled theft protection system of a motor vehicle
DE10310158B4 (en) 2003-03-07 2008-07-31 Siemens Ag Access control system with entangled evaluation of code and distance information
DE102005015594B4 (en) * 2005-04-05 2007-04-12 Texas Instruments Deutschland Gmbh Non-contact access system and immobilizer with different frequencies using the same antenna coil
JP4614138B2 (en) * 2006-09-12 2011-01-19 株式会社デンソー In-vehicle wireless transmission device and in-vehicle wireless transmission system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092787A (en) * 1960-07-21 1963-06-04 Avco Corp Crystal controlled multiple frequency generator
DE1256272B (en) * 1964-10-21 1967-12-14 Ibm Deutschland Modulator for asynchronous frequency shift keying
DE3246295C2 (en) * 1982-12-14 1986-11-27 Siemens AG, 1000 Berlin und 8000 München Frequency modulable oscillator
CA1279899C (en) * 1985-08-13 1991-02-05 Notifier Company Security system with saw transmitter
DE4012265A1 (en) * 1990-04-17 1991-10-24 Toepholm & Westermann CIRCUIT ARRANGEMENT FOR AN OUTPUT TANK CIRCUIT OF A TRANSMITTER END STAGE OPERATED WITH FREQUENCY REVERSING
DE4113708C2 (en) * 1991-04-26 1995-10-05 Telefunken Sendertechnik Electronically switchable resonance circuit
US5367537A (en) * 1993-05-24 1994-11-22 Delco Electronics Corp. Saw-based FSK modulating circuit

Also Published As

Publication number Publication date
DE19539939A1 (en) 1997-04-30
FR2740635A1 (en) 1997-04-30
DE19539939B4 (en) 2004-09-09

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20080630