METHOD OF ANTITHEFT CONTROL OF VEHICLE FUNCTIONAL MEMBERS AND ANTITHEFT SYSTEM FOR VEHICLE Russian patent published in 1997 - IPC

FIELD: transport engineering; antitheft systems. SUBSTANCE: antitheft system based on automatic analysis of speech has parameter separation unit selecting spectrum-time parameters of speech specific for the user and its manner of speech, text dependent parameters separation unit for identification of personality of user and for control purposes which selects set of parameters sufficient for reliable identification of pronunciation of word or sentence. Separation units are coupled by outputs with microphone and are connected to user personality identification subsystem and subsystem identifying sense of service pass words and control commands. These subsystems generate signals for adaptive control unit coupled with storage of logic functions, ignition switch which serves for initiating protection system and with automobile functional members. Proposed system, after special training, can identify the voice of user, even when it has somewhat changed in case of throat illness and its acts on alarm subsystems in case of unauthorized use of automobile. It can be adjusted to prevent retraining, hi-jacking and provide tracking in case of stealing. EFFECT: improved reliability of protection. 31 cl, 9 dwg