Patent ID: 6288634
Filing Date: 2001-09-11
Classification: A45D,G02C

Abstract:
An audio system for a vehicle comprising:a device component permanently fixed to the vehicle, the device component further comprising a control unit, anda mobile component connected to the device component in a mechanically detachable way, the mobile component further comprising a transponder for storing a numerical code,whereby the control unit further comprises a customer-specific control circuit (ASIC) which comprises a demodulator for receiving the numerical code from the transponder, and an amplifier,whereby function of the audio system is interrupted when the mobile component is removed from the device component and, after an authorization check, function of the audio system is restored when the mobile component is replaced in the device component,whereby the authorization check is performed by the control unit which further comprises a comparator unit for comparing the numerical code stored in the mobile component with a security code stored in a memory of the device component.