GB2320120A - Car entertainment system theft alarm and inhibition system - Google Patents

Car entertainment system theft alarm and inhibition system Download PDF

Info

Publication number
GB2320120A
GB2320120A GB9625439A GB9625439A GB2320120A GB 2320120 A GB2320120 A GB 2320120A GB 9625439 A GB9625439 A GB 9625439A GB 9625439 A GB9625439 A GB 9625439A GB 2320120 A GB2320120 A GB 2320120A
Authority
GB
United Kingdom
Prior art keywords
car
alarm
sounder
battery
entertainment system
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Withdrawn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
GB9625439A
Other versions
GB9625439D0 (en
Inventor
Jitendra Jayantilal Ranpura
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
Priority to GB9625439A priority Critical patent/GB2320120A/en
Publication of GB9625439D0 publication Critical patent/GB9625439D0/en
Publication of GB2320120A publication Critical patent/GB2320120A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B73/00—Devices for locking portable objects against unauthorised removal; Miscellaneous locking devices
    • E05B73/0005—Devices for locking portable objects against unauthorised removal; Miscellaneous locking devices using chains, cables or the like
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B73/00—Devices for locking portable objects against unauthorised removal; Miscellaneous locking devices
    • E05B73/0082—Devices for locking portable objects against unauthorised removal; Miscellaneous locking devices for office machines, e.g. PC's, portable computers, typewriters, calculators
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1409—Mechanical actuation by lifting or attempted removal of hand-portable articles for removal detection of electrical appliances by detecting their physical disconnection from an electrical system, e.g. using a switch incorporated in the plug connector
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/149—Mechanical actuation by lifting or attempted removal of hand-portable articles with electric, magnetic, capacitive switch actuation

Abstract

The alarm system is arranged inside the entertainment system and includes a relay 2 which responds to interruption of the connection between the car battery and the relay coil to cause an alarm sounder 5 to be energised. The system is powered by a rechargeable battery 7 which is charged from the car battery via a recharging circuit 3. The sounder is energised using a latching circuit 4 and an authorised user keyswitch 8 is provided to enable the sounder to be silenced. An LED 1 is provided to act as a deterrent to thieves. The entertainment system may be secured to the car chassis via a lockable cable (Fig. 2) so as to prevent the system from being removed from the car by a thief.

Description

CAR ENTERTAINMENT SYSTEM THEFT INHIBITION SYSTEM This invention relates to a system for inhibiting the theft of car entertainment systems Car entertainment systems are systems found inside cars to entertain the driver and passengers inside a car Car entertainment systems are prone to theft.
According to the present invention there is provided an alarm system to be built into the car entertainment system comprising a means to detect the theft. This could be a relay a transistor circuit a sensor and associated circuitry A means to make unautherised persons unable to deactivate the alarm.This could be a latching circuit a relay circuit a transistor circuit A means to let autherised persons deactivate the alarm.
This could be a key switch.
a key pad with a code A means to sound the alarm, this is a audible sounder.
A means to power the sounder with an onboard power source.
This could be a rechargeable battery.
Ameans to keep the onboard power source fully charged.
This will be a circuit built around a battery recharging integrated circuit.
A means of physically attaching the car entertainment system to the car via a cable of sorts so making the car entertainment system unable to be taken out of the car without autherisation.
A specific embodiment of the invention will now be discribed by way of example with reference to the accompanying drawing in which.
FIG 1; Shows the circuit diagram of the invention.
FIG 2; Shows the cable and one method of affixing it to the chassis of the car entertainment system.
and where the other end of the cable is attached in the car There follows a discription of the car entertainment sytem theft inhibition system. All numbers refer to FIG 1 unless stated otherwise.
The on board battery recharging circuitry 3 draws its operating power from the car's battery, the positive and ground supply pins of the onboard battery recharging circuitry are connected via conductors, to the positive and negative respectively poles of the car battery.
The power used to reccharge the onboard battery 7 by the onboard battery recharging circuitry 3 is also drawn from the car battery.
The conductors from the onboard battery recharging circuitry3 which carry the power to recharge the on board battery 7 are shown on the circuit diagram as positive connection 9 and negative connection 10.
The car battery is connected to the coil of a single pole normally closed SPNC relay 2. In series with the relay 2 its positive coil connection and the positive pole of the car battery is a LED 1 which acts as a detterent to thieves.
Once the connection between the car battery and the relay's 2 coil is broken and the keyswitch 8 has not made the alarm inactive by the authorised owner turning his key in the keyswitch 8. This is as the relay 2 connection before it reaches the latching circuit 4,passes through the key switch 8 and from one connection of the keyswitch 8 through to the connection with the keyswitch 8 and the input conductor of the latching circuit 4. If this connection is broken by the keyswitch 8 switching it off, then the alarm is inactive.
Once a high voltage appears on the latching circuit input conductor 11 when the relay 2 closes as a result of its coil becoming disconnected from the car battery and provided the keyswitch has not made the alarm inactive. The latching circuit 4 will latch. Now the alarm can only be deactivated by the keyswitch 8. Once latched the latching circuit 4 will output a high voltage to the base of the transistor 6, so allowing current to pass from through the transistor 6. The base of the transistor is connected to the output of the latching circuit 11, Its collector connected to one pin of the sounder 5 and its emmitor connected to the negative pole of the onboard battery. Once the transistor 6 is switched on, has a high voltage applied to its base, current can flow in a closed circuit between the sounder 5 and the onboard battery 7.
The sounder has two pins, one pin connected, as stated above, to the collector of the transistor 6 and the other pin connected to the positive supply of the onboard battery 7 There is also, connected to the outside of the chassis of the car music system, means to secure a cable of sorts FIG 2 means to allow an autherised person to release the cable from the chassis, And means in the car's entertainment system housing, to securely fix the other end of the cable so preventing a thief from effectively removing the car entertainment system from the car. Note if it is a thief the alarm will be sounding.

Claims (2)

  1. i) A Electronic device theft inhibition system in which the alarm sounder and rechargeable means to power it located inside the electronic device it alarms with means to detect the theft, to recharge the onboard power supply and a latching system which once latched will enable only an authorised person to silence the alarm also means to deactivate the alarm by authorised persons and including a visual detterence to thieves.
  2. 2) An electronic device theft inhibition system as in claim 1 with a method of affixing the device to a base so to make it difficult to remove the device quickly 3) A method of affixing the 3éttrónic device to the base as in claim 2 via a cable that is lockable.
GB9625439A 1996-12-06 1996-12-06 Car entertainment system theft alarm and inhibition system Withdrawn GB2320120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9625439A GB2320120A (en) 1996-12-06 1996-12-06 Car entertainment system theft alarm and inhibition system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9625439A GB2320120A (en) 1996-12-06 1996-12-06 Car entertainment system theft alarm and inhibition system

Publications (2)

Publication Number Publication Date
GB9625439D0 GB9625439D0 (en) 1997-01-22
GB2320120A true GB2320120A (en) 1998-06-10

Family

ID=10804087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9625439A Withdrawn GB2320120A (en) 1996-12-06 1996-12-06 Car entertainment system theft alarm and inhibition system

Country Status (1)

Country Link
GB (1) GB2320120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800005371A1 (en) * 2018-05-16 2018-08-16 Filippo Emilio De Anti-theft for standard car radios

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836901A (en) * 1972-05-15 1974-09-17 Aerolite Electronics Corp Motion-sensitive alarm with line-cord-responsive automatic arming means
US4211995A (en) * 1976-09-20 1980-07-08 Jack Smith Alarm and locking device to prevent theft of an article
US4237450A (en) * 1978-11-13 1980-12-02 Canez Antonio R Appliance theft alarm
US4284983A (en) * 1980-02-19 1981-08-18 Lent Roger S Appliance anti-theft and protection circuitry
GB2124422A (en) * 1982-05-14 1984-02-15 Alan Johnson Theft alarms
US4658242A (en) * 1985-06-07 1987-04-14 Abraham Zeder Impedance sensing anti-theft device
WO1995027958A1 (en) * 1994-04-09 1995-10-19 Tonebell Limited Alarms incorporating plug for electric appliances

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836901A (en) * 1972-05-15 1974-09-17 Aerolite Electronics Corp Motion-sensitive alarm with line-cord-responsive automatic arming means
US4211995A (en) * 1976-09-20 1980-07-08 Jack Smith Alarm and locking device to prevent theft of an article
US4237450A (en) * 1978-11-13 1980-12-02 Canez Antonio R Appliance theft alarm
US4284983A (en) * 1980-02-19 1981-08-18 Lent Roger S Appliance anti-theft and protection circuitry
GB2124422A (en) * 1982-05-14 1984-02-15 Alan Johnson Theft alarms
US4658242A (en) * 1985-06-07 1987-04-14 Abraham Zeder Impedance sensing anti-theft device
WO1995027958A1 (en) * 1994-04-09 1995-10-19 Tonebell Limited Alarms incorporating plug for electric appliances

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800005371A1 (en) * 2018-05-16 2018-08-16 Filippo Emilio De Anti-theft for standard car radios

Also Published As

Publication number Publication date
GB9625439D0 (en) 1997-01-22

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)