| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a time correction system capable of correcting surely time information clocked by an onboard clock, without requiring a troublesome operation. <P>SOLUTION: A vehicular key 2 for unlocking or locking a door of a vehicle by radio wave is provided with a standard radio wave receiving circuit 21 for receiving a standard radio wave including a standard time signal, and an RF transmission circuit 26 for transmitting a control signal S26d for indicating the locking or unlocking for the door of a vehicle 10, and a standard time signal S26t included in the standard radio wave received by the standard radio wave receiving circuit 21, and an onboard device 1 is provided with an RF reception circuit 11 for receiving the control signal S26d and the standard time signal S26t, a door lock control part 14 for conducting the locking or unlocking, based on the control signal S26d received by the RF reception circuit 11, and the onboard clock 15 including a control circuit 15a for correcting the time information clocked by the onboard clock 15, based on the standard time signal S26t received by the RF reception circuit 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
