Abstract: A method for enabling an apparatus (15) to operate only after detecting with receiver elements (11) located proximate to the apparatus, a signal transmitted by portable transmitted elements (1), which consists in no longer taking into account detection by the receiver means (11) of the signal transmitted by the transmitting elements (1), after activating presence sensing elements (22) provided proximate to the apparatus, or integrated in the apparatus. Once activated, the presence sensing elements (22) neutralize the transmitter/receiver device (1, 11) and the apparatus can operate normally without being perturbed by possible statics or accidental losses of signal. The inventive method and device are applicable to an antitheft safety device for a motor vehicle.

Abstract: A receiving case for a video unit includes an electronic console (2) and an associated independent screen (3), which case includes stowing sections (4, 5) suited to accommodate respectively the electronic console (2) and the associated screen (3), and also includes holding parts to hold the external face of the stowing section (5) suited to accommodate the screen (3) tight against the rear face of the head-rest section of a seat. These holding parts form a fastening system, for instance in the form of single block head-rest protective cover (20).

Abstract: A method for assembling a case (5), such as integral play station, a simple screen for a DVD reader or for a play station, a loudspeaker, on a cushion (2) such as a headrest or a set back cushion, fitted with a protection cover (4) includes fastening the case (5) directly on the protection cover (4), before mounting the cover (4) on the cushion (2).

Abstract: A receiving case for a video unit includes an electronic console (2) and an associated independent screen (3), which case includes stowing sections (4,5) suited to accommodate respectively the electronic console (2) and the associated screen (3), and also includes an element to hold the external face of the stowing section (5) suited to accommodate the screen (3) tight against the rear face of the head-rest section of a seat. These holding device consists of a fastening system, for instance in the form of single block head-rest protective cover (20).

Abstract: A method for assembling a case (5), such an integral play station, a simple screen for a DVD reader or for a play station, a loudspeaker or other . . . , on a cushion (2) such as a headrest or a seat back cushion, fitted with a protection cover (4). This method is characterized in that it consists in fastening the case (5) directly on the protection cover (4), before mounting said cover (4) on the cushion (2).

Abstract: Anti-theft security devices for a motor vehicle, comprise portable transmitting elements, of a receiving module on board the vehicle and of elements controlling a system for interrupting at least one circuit required for operating the vehicle (ignition circuit engine, fuel intake circuit or other . . . ) when the distance between the transmitting elements and the receiving elements exceeds a certain value. The method for managing the operation of such a device consists, when resetting the affected circuit(s), following an interruption relative to accidental signal loss, in performing this resetting only very gradually.

Abstract: A method for assembling a case (5), such an integral play station, a simple screen for a DVD reader or for a play station, a loudspeaker or other . . . , on a cushion (2) such as a headrest or a seat back cushion, fitted with a protection cover (4). This method is characterised in that it consists in fastening the case (5) directly on the protection cover (4), before mounting said cover (4) on the cushion (2).