Sicherheitssystem für Audiogerät

摘要

The invention relates to an audio device and to an audio device security system for installation in a motor vehicle with a vehicle security system 2,3,4. An audio device 1 such as a radio has circuitry 21 to detect a connection to the vehicle power supply, a microprocessor 11 to inhibit the operation of the audio device after an interruption of the connection, an interface 6 and a connection to a bus 5,9,10 for communicating data between the audio device 1 and the vehicle security system 2,3,4, and a data verification unit 15 with a non-volatile memory 13 for verifying data communicated to the audio device. Following an interruption of the connection the audio device is automatically reset to operational if the data are communicated and verified, and if the data are not communicated or not verified the audio device may only be reset manually.