Abstract: A door lock/unlock system for a vehicle is comprised of a door lock state detector for detecting a door lock/unlock state, a door open state detector for detecting a door open/close state, a door lock mechanism for locking and unlocking a door, and a controller. The controller is arranged to compare a first lock/unlock state detected during the door open state with a second lock/unlock state detected at a moment when an open/close state is changed from an open state to a closed state, to maintain the state of the door lock mechanism when the first lock/unlock state corresponds to the second lock/unlock state, and to set the state of the door lock mechanism at the first lock/unlock state when the first lock/unlock state does not corresponds to the second lock/unlock state.

Abstract: A vehicle-mounted device communication controller includes a vehicle-mounted unit for communicating with ID-registered portable units, a switch-detection mechanism for detecting pressing of an operation knob, a switch-operation restriction mechanism for restricting the rotation of the knob, and a door-opening/closure detection mechanism for detecting opening and closure of a door. Signals are exchanged between the vehicle-mounted unit and each portable unit, and a portable unit having succeeded in exchanging the signals is authenticated and released from the restriction. The vehicle-mounted unit includes a sending/receiving part, a controller, an authentication part, and an ID-storage part.

Abstract: A door lock/unlock system for a vehicle is comprised of a door lock state detector for detecting a door lock/unlock state, a door open state detector for detecting a door open/close state, a door lock mechanism for locking and unlocking a door, and a controller. The controller is arranged to compare a first lock/unlock state detected during the door open state with a second lock/unlock state detected at a moment when an open/close state is changed from an open state to a closed state, to maintain the state of the door lock mechanism when the first lock/unlock state corresponds to the second lock/unlock state, and to set the state of the door lock mechanism at the first lock/unlock state when the first lock/unlock state does not corresponds to the second lock/unlock state.

Abstract: A vehicle-mounted unit includes a controller which changes a setting of a search method of portable units between a simple search method which is based on sending/receiving of simple search signals and simple response signals and an individual search method which is based on sending/receiving of normal search signals and normal response signals, and an ID-storage part which updates and stores the ID of the portable unit authenticated at a latest time as the latest authenticated ID. When the latest authenticated ID is stored in the ID-storage part, the controller searches the portable unit having the latest authenticated ID by priority and by the individual search method.

Abstract: An electronic key device for a vehicle which performs starting of the vehicle by performing ID verification against a portable electronic key unit includes an ID verification device, a decision device, and a vehicle starting control device. When the number of times that the result of ID checking by the ID verification device is negative and also the portable key unit is not present within the vehicle arrives at a predetermined value, a locked mode is set in which thereafter starting of the vehicle is prohibited unless a predetermined procedure is performed. When the result of ID checking by the ID verification device is affirmative and the portable key unit is not present within the vehicle, then no such predetermined number of times calculation for setting the locked mode is performed.

Abstract: An on-vehicle apparatus communicates with an electronic key by wireless communication. The one-vehicle apparatus decides to unlock a vehicular door according to an identification result between first ID of the electronic key and unlock-operation ID of the on-vehicle apparatus, and decides to start an engine of the vehicle according to an identification result between second ID of the electronic key and engine-starting ID of the on-vehicle apparatus. The on-vehicle apparatus commands the electronic key to output third ID shorter in data length than the second ID, when the first ID corresponds with the unlock-operation ID. The on-vehicle apparatus permits starting the engine when the third ID corresponds with compacted data of the engine-starting ID.

Abstract: A vehicular electronic key system includes an on-vehicle apparatus which is communicable with an electronic key when the electronic key is in a predetermined area outside of a vehicle. The on-vehicle apparatus generates alarm when a door lock operation is executed from the outside of the vehicle and when the on-vehicle apparatus is not capable of communicating with the electronic key. Further, on-vehicle apparatus generates alarm when a key ID does not corresponds with an apparatus ID. Therefore, the electronic key system can firmly prevent the electronic key from being mislaid in the vehicle.

Abstract: A vehicle-mounted device communication controller includes a vehicle-mounted unit for communicating with ID-registered portable units, a switch-detection mechanism for detecting pressing of an operation knob, a switch-operation restriction mechanism for restricting the rotation of the knob, and a door-opening/closure detection mechanism for detecting opening and closure of a door. Signals are exchanged between the vehicle-mounted unit and each portable unit, and a portable unit having succeeded in exchanging the signals is authenticated and released from the restriction. The vehicle-mounted unit includes a sending/receiving part, a controller, an authentication part, and an ID-storage part.

Abstract: A vehicle-mounted unit includes a controller which changes a setting of a search method of portable units between a simple search method which is based on sending/receiving of simple search signals and simple response signals and an individual search method which is based on sending/receiving of normal search signals and normal response signals, and an ID-storage part which updates and stores the ID of the portable unit authenticated at a latest time as the latest authenticated ID. When the latest authenticated ID is stored in the ID-storage part, the controller searches the portable unit having the latest authenticated ID by priority and by the individual search method.

Abstract: An electronic key device for a vehicle which performs starting of the vehicle by performing ID verification against a portable electronic key unit includes an ID verification device which performs ID verification against the portable electronic key unit when pushing in operation of an ignition knob has been performed, a decision device which decides whether or not the portable electronic key unit is present within the vehicle when vehicle starting operation has been performed, and a vehicle starting control device which performs starting control of the vehicle, when the ID checking result and also the result of the decision by the decision device are both affirmative. When the number of times that the result of ID checking by the ID verification device is negative and also it is decided that the portable key unit is not present within the vehicle arrives at a predetermined value, a locked mode is set in which thereafter starting of the vehicle is prohibited unless a predetermined procedure is performed.

Abstract: A vehicular electronic key system includes an on-vehicle apparatus which is communicable with an electronic key when the electronic key is in a predetermined area outside of a vehicle. The on-vehicle apparatus generates alarm when a door lock operation is executed from the outside of the vehicle and when the on-vehicle apparatus is not capable of communicating with the electronic key. Further, on-vehicle apparatus generates alarm when a key ID does not corresponds with an apparatus ID. Therefore, the electronic key system can firmly prevent the electronic key from being mislaid in the vehicle.

Abstract: An on-vehicle apparatus communicates with an electronic key by wireless communication. The one-vehicle apparatus decides to unlock a vehicular door according to an identification result between first ID of the electronic key and unlock-operation ID of the on-vehicle apparatus, and decides to start an engine of the vehicle according to an identification result between second ID of the electronic key and engine-starting ID of the on-vehicle apparatus. The on-vehicle apparatus commands the electronic key to output third ID shorter in data length than the second ID, when the first ID corresponds with the unlock-operation ID. The on-vehicle apparatus permits starting the engine when the third ID corresponds with compacted data of the engine-starting ID.