Abstract: Portable devices are provided to occupants, who frequently use a vehicle. Based on a result of verification of an ID code of respective portable devices through intercommunication between the respective portable devices and a vehicle side unit, a number and a location of the occupant, who approaches the vehicle to get into a passenger compartment of the vehicle, are sensed. Based on the sensed result, a position of a seat, which is predicted to be used by the corresponding occupant, is changed.

Abstract: When searching of a location of a vehicle is commanded, a vehicle search signal is transmitted from a portable device. The vehicle search signal includes an ID code of the portable device. When a vehicle side communication unit receives the valid ID code, the vehicle side communication unit transmits a vehicle side response signal to the portable device. The portable device computes a distance from the portable device to the vehicle based on a signal level of the received vehicle side response signal. A notifying device notifies the computed distance.

Abstract: Based on a user's instruction, a door control unit drives a door opening/closing motor for a pop-up operation. A door is thereby rotated to a predetermined angle, which is smaller than a fully opened angle. Therefore, even when a user holds stuff in his/her hands, the door can be easily opened up to the predetermined angle. When the door is opened at the predetermined angle, the user can insert a part of his/her body into a gap corresponding to the predetermined angle and then further open the door by pushing the door from the door inside surface.

Abstract: An in-vehicle device remote control system includes a vehicle-side device, a main mobile device that returns a first response signal in response to a request signal transmitted from the vehicle-side device, and a sub-mobile device that returns a second response signal in response to the request signal. When the vehicle-side device receives the response signal, it conducts a matching process. Vehicle doors are unlocked automatically when the received response signal is determined to be either the first or the second response signal. On the other hand, the engine start is permitted only when the received signal is determined to be the first response signal.

Abstract: On condition that a holder of a portable device has manipulated an ignition switch, a main control ECU discriminates the open/closed state of a luggage compartment door. When the luggage compartment door is in the closed state, the main control ECU instructs a rear transmitter to transmit a first request signal. When the luggage compartment door is in the open state, the main control ECU instructs the rear transmitter to transmit a second request signal. A portable ECU discriminates the request signal received by a receiver. When the received request signal has been determined to be the second request signal, the portable ECU adjusts the transmission output of a response signal which is to be transmitted from a transmitter, to a second transmission output which is lower than an ordinary output.

Abstract: A vehicle door control system provides increased usability convenience to users by a function for automatically opening and closing vehicle doors. When a response signal has been continuously received over a predetermined period from a portable device in response to a request signal periodically transmitted from a vehicle unit, it can be inferred that the holder of the portable device has not merely passed by the vehicle but stays in the vicinity of the vehicle with the will to ride in the vehicle. Therefore, vehicle doors having the automatic opening/closing function are unlocked and automatically opened. This eliminates a need for the holder of the portable device to command the operations of unlocking and automatically opening the vehicle doors.

Abstract: In a keyless entry system for a vehicle, an in-vehicle device controls door-lock or door-unlock according to a remote-controlling wireless signal from a transmitter. The in-vehicle device determines whether a demodulated signal compliant with a communications rule is obtained from the received wireless signal, and then whether authentication data included in the received wireless signal accords with that stored in the vehicle. The in-vehicle device stores a result of the determination as an analysis result of received electric waves. When a read-out request is received from a diagnosis tool, the stored analysis result is thereby outputted to the diagnosis tool. Based on the outputted analysis result, it is determined whether a cause of non-operation abnormality is a transmitting function of the transmitter or a receiving function of the in-vehicle device.

Abstract: The vehicle-installed remote control unit includes a receiver receiving a command signal transmitted from a transmitter dedicated to a vehicle, and a controller controlling a part of the vehicle in accordance with the command signal received by the receiver. The controller has a noise-decision function of deciding whether or not a signal received by the receiver is a noise, a record function of recording noise information including at least information specifying a time at which the signal received by the receiver is decided to be the noise by the noise-decision function in a memory included in the controller, and an output function of outputting the noise information recorded in the memory to an external device in response to a command received from the external device.

Abstract: A portable device in an electronic key system has a motion detection sensor to detect its motion from a continuation of standing state over a specified period of time, sound and vibration are generated. This sound and vibration make the user aware that he or she carries the portable device. The user thus is reminded of carrying the portable device whenever he or she goes out. If the motion detection sensor detects a larger motion, the sound and vibration are generated without checking the specified period of time. The motion may also be reported to handy equipment, which is separate from the portable device and carried by the user.

Abstract: A portable device search system for an electronic key system is formed by a portable device and handy equipment such as a cellular phone, PDA and the like, which is separate from the portable device. When a predetermined operation is performed on the handy equipment, the handy equipment transmits a search signal. On receiving the search signal, the portable device generates a specific sound and vibration to notify the location. In addition, an image near the portable device may be transmitted to the handy equipment to be displayed on the handy equipment.

Abstract: When communications is established between a sender and recipient, elapsed times of reception waiting timers are reset in the sender and recipient at timings, respectively, as follows: for the sender, at a timing when the sender receives a reply to a command that the sender sent; and for the recipient, at a timing when the recipient sends a reply to the command that the recipient received. Of the sender and recipient, the elapsed times of the reception waiting timers, and furthermore settings of operation modes thereby accord with each other. On the other hand, when the communications is not established because of a blank shooting or the like, the reply is neither sent nor received by the recipient or sender, respectively. The reception waiting timers are thereby not reset; therefore, no difference occurs in the elapsed time between the sender and recipient.