VEHICLE ALARM SYSTEM

A vehicle alarm system includes a first device mounted on a vehicle, and a second device mounted on the vehicle. The first device authenticates the second device by first wireless communication processing with the second device, detects that a state of the vehicle is changed in a predetermined patte...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	ATSUMI, Ryuta
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE CHECKING-DEVICES GENERATING RANDOM NUMBERS PERFORMING OPERATIONS PHYSICS REGISTERING OR INDICATING THE WORKING OF MACHINES TIME OR ATTENDANCE REGISTERS TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR VOTING OR LOTTERY APPARATUS
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Beschreibung
Zusammenfassung:	A vehicle alarm system includes a first device mounted on a vehicle, and a second device mounted on the vehicle. The first device authenticates the second device by first wireless communication processing with the second device, detects that a state of the vehicle is changed in a predetermined pattern in a case where the second device is successfully authenticated, and outputs a predetermined alarm instruction when the first device detects that the first wireless communication processing is stopped. The second device authenticates a portable terminal device by second wireless communication processing with the portable terminal device, and performs the first wireless communication processing with the first device in a case where the portable terminal device is successfully authenticated. The first device causes the second device to stop the first wireless communication processing when the first device detects a predetermined first state change of the vehicle.