发明名称 Method for code protection using an electronic key
摘要 In a method for code protection of an electronic key, a plurality of codes n are stored in a transmitter and in a receiver and a new, coinciding code is automatically set in the transmitter and in the receiver after each transmission and reception event, respectively. The code transmitted by the transmitter contains information for the receiver with respect to which code is to be selected from the stored set of codes as the next code to be utilized.
申请公布号 US4928098(A) 申请公布日期 1990.05.22
申请号 US19880263403 申请日期 1988.10.27
申请人 SIEMENS AKTIENGESELLSCHAFT 发明人 DANNHAEUSER, FRIEDRICH
分类号 G07C9/00 主分类号 G07C9/00
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