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1. 发明授权

US4492959A Keyless entry system for an automotive vehicle 失效
标题翻译：汽车无钥匙进入系统
公开(公告)号：US4492959A
公开(公告)日：1985-01-08
申请号：US391343
申请日：1982-06-23
申请人： Haruo Mochida , Hiroshi Nakakooji , Hirotoshi Namazue
发明人： Haruo Mochida , Hiroshi Nakakooji , Hirotoshi Namazue
IPC分类号： G07C9/00 , E05B49/00 , H04Q9/00
CPC分类号： G07C9/0069
摘要： There is provided a keyless entry system in which a permanent code, or first code, and a user's code, or second code are used. The second code is presettable in conjunction with use of the first code. When the first code is inputted, the system gets ready for presetting a desired number of code elements consituting the second code. According to the invention, the system is provided with a circuit for variably presetting the number of the code elements, which circuit is responsive to the first code to vary the presetted number of the second code elements to that inputted following to the input of the first code. Preferably, the keyless entry system further includes a theft prevention circuit which inhibits input of a code for a given period of time when wrong codes are inputted more than a predetermined number of times.
摘要翻译：提供了一种无钥匙进入系统，其中使用永久代码或第一代码，以及用户代码或第二代码。第二个代码与第一个代码的使用一起进行预设。当输入第一代码时，系统准备好预置所需数量的构成第二代码的代码元素。根据本发明，该系统设置有用于可变地预设代码元素的数量的电路，该电路响应于第一代码，以将第二代码元素的预设数量改变为输入的第一代码元素码。优选地，无钥匙进入系统还包括防盗电路，其在错误代码被输入多于预定次数时禁止输入代码给定的时间段。

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