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    • 1. 发明授权
    • Vehicle key-verifying apparatus and method with decreased verification time period feature
    • 车辆钥匙验证装置和方法具有减少的验证时间段特征
    • US06549116B1
    • 2003-04-15
    • US09345951
    • 1999-07-01
    • Takayoshi HondaKoichi Kinbara
    • Takayoshi HondaKoichi Kinbara
    • H04L932
    • B60R25/24B60R25/04G07C9/00309G07C2009/00531G07C2009/00547G07C2009/00793
    • A key-verifying apparatus for quickly determining whether a key is legitimate, even when a legitimate key is determined not to be legitimate in at least a first iteration of key-verifying processing due to a communication fault or the like. An immobilizer ECU sends query data to a key transponder, receives response data from the transponder, generates auto-response data from the query data and key-discriminating data, and repeats key-verifying processing through determination as to whether the key is a legitimate until the key is determined to be legitimate or until a predetermined number of iterations are completed. The immobilizer ECU, after receiving the response data from the transponder in the present key-verifying processing, immediately initiates sending of query data in the subsequent key-verifying processing, and so the cycle for determining whether a key is legitimate is shortened compared to the cycle of a verifying apparatus that initiates sending of subsequent query data after determining that a key is not legitimate.
    • 一种用于快速确定密钥是否合法的密钥验证装置,即使在至少由于通信故障等引起的密钥验证处理的第一次迭代中确定合法密钥也不合法。 防盗器ECU将查询数据发送到密钥转发器,从应答器接收响应数据,从查询数据和密钥鉴别数据生成自动响应数据,并通过确定密钥是否合法重复密钥验证处理,直到 该密钥被确定为合法的或者直到预定数量的迭代完成。 防盗器ECU在本密钥验证处理中接收到来自应答器的响应数据之后,立即在随后的密钥验证处理中发起查询数据的发送,因此与密钥验证处理相关的密钥的合法周期缩短 在确定密钥不合法之后发起后续查询数据的发送的验证装置的周期。