FIELD: automotive; safety systems.
SUBSTANCE: invention relates to automotive alarm, in particular to devices for protection against imitation of automotive alarm, and can be used for protection of transmitted automotive alarm data. Device consists of two parts - from stationary including control unit, a unit for random number generator, an outgoing pattern buffer, a transponder initialisation unit, bidirectional communication line and a first pseudorandom sequence; as well as from a mobile part comprising control device, an identifier memory unit, an instruction counter, a first pseudorandom sequence generator unit, an initialisation value memory unit, an outgoing pattern buffer, a receiving-transmitting device, an input pattern buffer, a command determining unit, an alarm unit.
EFFECT: higher for protection against imitation of radio communication between transponder and base part.
1 cl, 3 dwg
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