| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyless entry system allowing a user to use it easily and capable of canceling check of unnecessary use conditions. <P>SOLUTION: This key information management device 10 issues a master key, a copy key, and use limit of the copy key, transmits the master key to a vehicle 30 and a portable terminal unit 20, and transmits the copy key and use limit information of the copy key to a portable terminal unit 21. A key information storage device 31 stores the master key issued by the key information management device 10 and the use limit information of the copy key transmitted by the terminal unit 21. A vehicle controller 34 operates a driving part 33 when a key in the master key received from the portable terminal unit 20 is in the key information storage device 31 and operates the driving part 33 when a key in the copy key received from the portable terminal unit 21 is in the key information storage device 31 and use of the copy key is within use limit of the copy key in the key information storage device 31. <P>COPYRIGHT: (C)2007,JPO&INPIT |
