Cellular phone unit, control system of vehicle-mounted device, control method of cellular phone unit, control method of vehicle-mounted device, control program of cellular phone unit, control program of vehicle-mounted device, and recording medium recording the program

Abstract

A cellular phone unit (1) is provided with ID information input means for accepting an input of user ID information, ID judging means for judging whether or not the inputted user ID information is identical to pre-registered ID information, authentication information transmission permitting means for deciding whether or not to permit transmission of sender authentication information in accordance with the judgment result, and authentication information transmitting means for sending the sender authentication information in accordance with the decision. A vehicle-mounted control device (2) is provided with an antenna (5) and a transmission and reception section (6) for receiving the sender authentication information, and a control section (4) and an interface (7) for judging whether or not the sender authentication information received from the cellular phone unit (1) is identical to pre-registered authentication information and for controlling vehicle-mounted devices (3a) through (3c) in accordance with the judgment result.

Description

[0001] This application is a Continuation of U.S. application Ser. No. 10 / 486,081, filed Feb. 6, 2004, which is a national stage of PCT / JP02 / 07939, filed Aug. 2, 2002, which claims priority from Japanese Patent Application 2001-239869, filed Aug. 7, 2001.TECHNICAL FIELD [0002] The present invention relates to a control system and control method of a vehicle-mounted device using a cellular phone unit; and a cellular phone unit and a control method of a cellular phone unit used therein. BACKGROUND ART [0003] Conventionally, a remote control technique to lock / unlock the doors of a vehicle is widely used. A typical example is a keyless entry system. In this system, the doors are locked / unlocked if a vehicle-mounted control device receives weak radio wave that is sent from a dedicated remote controller. The dedicated remote controller sends the weak radio wave whose reachable distance is up to about 50 m to 100 m, in response to pressing of a button of the dedicated remote controller. [0...

AI Technical Summary

Benefits of technology

[0009] In order to solve the foregoing problems, the present invention has an objective to provide a control system and control method of a vehicle-mounted device, a cellular phone unit, and a control method of a cellular phone unit, which can realize high security and various device control.

[0019] With this, the user can simply and variously control vehicle-mounted devices only by carrying around a cellular phone unit which is widely used. Further, even if the cellular phone is lost or stolen, it is possible to prevent the third party who acquires or steals the cellular phone unit from using the vehicle illegally.

[0025] With this, the user can simply and variously control vehicle-mounted devices only by carrying around a cellular phone unit which is widely used. Further, even if the cellular phone is lost or stolen, it is possible to prevent the third party who acquires or steals the cellular phone unit from using the vehicle illegally.

Problems solved by technology

With the various types of conventional entry systems, however, if the remote controller, which is an equivalent of a conventional metal key, is lost or stolen, the third party who acquires or steals the remote controller may use the vehicle illegally.

Further, as vehicle-mounted devices to be controlled by remote controllers, such as an audio device and a navigation device, have been recently increased in vehicles, the handling of these controllers has become more and more complicated.

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