Patent ID: 7205884
Filing Date: 2007-04-17
Classification: B60R,G07C

Abstract:
1. An electronic key system comprising: a transmitter that transmits the interrogational signal to a mobile unit; a receiver that receives a code signal transmitted from the mobile unit in response to the interrogational signal; a controller that checks a relation between the code signal and a memorized signal, and controls a state of a door of a vehicle based on a check result of the relation; an indicator that is disposed on the vehicle to indicate the state of the door; and a detection means for detecting an opening operation of the door that is operated by a user having the mobile unit, wherein the controller sets the door of the vehicle in an unlock-standby state when the code signal transmitted from the mobile unit is authenticated when the user having the mobile unit approaches the vehicle, and unlocks the door when the opening operation of the door is detected by the detection means in the unlock-standby state, and the indicator starts to indicate the unlock-standby state of the door in a certain indication mode when the door becomes in the unlock-standby state, and the indicator changes the indication mode when the door is unlocked.