Anti-theft system for a radio receiver used particularly in a mo

Details Anti-theft system for a radio receiver used particularly in a mo Anti-theft system for a radio receiver used particularly in a mo

1989-06-09

1991-10-01

Eisenzopr, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Combined with diverse art device

455348, H04B 108, H05K 1102

Patent

active

050541196

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The present invention relates to a thief-proof system for radio receivers used in particular in an automotive vehicle.
Radio receivers mounted in particular in automotive vehicles are so coveted that a number of parked vehicles are broken into in order to steal for example through pulling out, the radio receiver.
In order to dissuade people from stealing radio receivers, it has already been proposed to mount in a removable manner the radio receiver on the dashboard of the vehicle.
However, due to the bulkiness of the radio receiver, the owner of the vehicle when he leaves it parked for a limited duration, often hides the radio receiver inside his vehicle, for example under a front seat thereof. This behaviour is well known from the thieves, so that they just have to break a window of the vehicle and to take rapidly the hidden radio receiver.


SUMMARY OF THE INVENTION

The present invention provides a system dissuading any people from coveting a radio receiver mounted inside an automotive vehicle.
For this purpose, the system for receiving radio waves according to the invention, used in particular in an automotive vehicle and of the type comprising essentially an audio amplifying unit solid in an inviolable manner with a stationary part of the vehicle such as the dashboard and a part for controlling the selection of the radio waves or tuner control, fastened in a removable manner to the amplifying unit and connected to the same through the medium of electric connection means making the tuner control unit operational, is characterized in that the amplifying unit comprises a housing for receiving the tuner control unit for electrically connecting the same to the amplifying unit and in that the tuner control unit presents on its visible outer part, once received in the housing, elements for controlling the search for radio waves frequencies and for selecting the waves and a device for displaying in particular the search frequencies.
According to an advantageous feature of the invention, the tuner control unit is in the shape of a flat right angled parallelepiped having a size similar to that of a credit card.
Thus, before leaving his vehicle, the user simply removes the tuner control from the amplifying unit so that the later be practically hidden and, due to the low bulkiness of the tuner control unit, the user can carry it away for example in his pocket.
Preferably, the amplifying unit is fastened behind the dashboard of the vehicle which comprises an aperture in front of the inlet of the housing of the amplifying unit for the passage of the tuner control.
The aforesaid electrical connecting means are formed of plugging means comprising a connector received in the lower part of the housing of the amplifying unit and comprising a certain number of resilient metallic strips cooperating respectively with metallic contacts which are solid with the tuner control unit.
It may be desirable not to effect the connection of the tuner control unit to the amplifying unit through the medium of the metallic strip-electrical contact assembly for reasons or reliability. Indeed, the extraction and the insertion of the tuner control unit from and into the amplifying unit can occur often during the day, so that a rapid wearing of the contacts is likely to occur. Moreover, these contacts may deteriorate due to the presence of metallic articles, such as a key and/or a coin during the transport of the tuner control unit inside a pocket.
To solve these problems, the system according to the invention provides also means for connecting the tuner control unit to the amplifying unit comprising a capacitive coupling-type connection for the transmission of high frequency signals coming from the antenna to the high frequency circuits of the tuner control unit, a capacitive coupling-type connection for the transmission of low frequency signals from the tuner control unit to the low frequency amplifyier of the amplifying unit and a electromagnetic coupling-type connection for the power supply of the tuner cont

REFERENCES:
patent: 3848164 (1974-11-01), Otte
patent: 4248095 (1981-02-01), Akatsu et al.
patent: 4339668 (1982-07-01), Mueller et al.
patent: 4409590 (1983-10-01), Baker
patent: 4481512 (1984-11-01), Cheulin et al.
patent: 4621373 (1986-11-01), Hodsdon
patent: 4623992 (1986-11-01), Kurosaki et al.
patent: 4683462 (1987-07-01), Takeda et al.
patent: 4704740 (1987-11-01), Mckee et al.
patent: 4785202 (1988-11-01), Toyoda
patent: 4940414 (1990-07-01), Lee
Radio Electronics, David Thomas, Health's Digital FM Tuner, May 1976, pp. 42-50,93.

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