Audio/video electronic equipment, such as a multimedia car radio, installable in an automotive vehicle
The equipment comprises a digital processor implementing an operating system requiring a previous boot before the equipment is in an operational state. A start module is operable, when the device is initially in a power-off state, for: producing a triggering signal upon detection ( 32 ) of a vibration by a sensor incorporated in the equipment, and activating ( 34 ) the processing means so as to initiate the boot of the operating system, but without activating the lighting means of a front display of the equipment, and finally activating these lighting means upon reception ( 36 ) of a vehicle start signal.
1. An audio/video electronic equipment ( 10 ), able to be installed in an automotive vehicle ( 12 ), said equipment comprising:
a microcontroller ( 26 ), capable of being in a power-off state or an operating state;
a vehicle-start-signal detection input (ST);
a front display ( 16 ) provided with a lighting module to provide light to the front display; and
a start module ( 22 ) operable for controlling the lighting module, characterized in that:
the microcontroller ( 26 ) includes an operating system;
the operating system requires a previous boot time to switch from the power-off state to the operating state;
the equipment further comprises a sensor ( 20 ) operable for producing a triggering signal upon detection ( 32 ) of a vibration; and
the start module ( 22 ) is operable for, upon reception of the triggering signal and from a power-off state:
i) in a first time (I), activating ( 34 ) the microcontroller so as to initiate the boot of the operating system, but without activating the lighting module, and
ii) in a second time (II), upon reception ( 36 ) of a vehicle start signal, activating the lighting module ( 38 ).
2. The equipment of claim 1 , wherein the start module is further operable for, after reception of the triggering signal and in the absence ( 40 ) of subsequent reception of the vehicle start signal during a predetermined time, forcing ( 42 ) the switching of the microcontroller back to the power-off state.
3. The equipment of claim 1 , wherein:
the equipment comprises:
said start module ( 22 ), and
an operational module ( 24 ) including the microcontroller ( 26 ), the display ( 16 ) and the lighting module, as well as circuits for the analog and digital processing of the audio/video signals,
at the power-off state, the start module is the only one to be powered, the operational module being not powered, and
the start module is further operable for switching on the operational module upon reception of the triggering signal,
to produce a systematic reboot of the operating system at each transition from the power-off state to the operational state.
4. The equipment of claim 1 , wherein the vibration sensor ( 20 ) is incorporated to the casing ( 14 ) of the equipment.