Nissan Motor Company Limited

Kansei Corporation

Masato Hashimoto

Syoji Terada

Tatsumi Iida

Each time identification information specific to each of wheels is received, a rotation position of each of the wheels is obtained and accumulated as rotation position data of each wheel with respect to each piece of identification information. Then, with respect to all the identification information, when a first tentative mounting position and a second tentative mounting position are the same in a vehicle width direction and different from each other in a vehicle longitudinal direction, the first and second tentative mounting positions being mounting positions of two of the wheels where a smallest degree of dispersion and a second smallest degree of dispersion are detected, and when the first tentative mounting position determined for each piece of the identification information is different from one another, each first tentative mounting position is determined as the mounting position of each of the wheels corresponding to the identification information, respectively.

Tire air pressure monitoring device, vehicle including tire air pressure monitoring device, and tire air pressure monitoring method

A wireless door locking and unlocking system for locking and unlocking the door of a motor vehicle having a theft alarm device. Further, the wireless door locking and unlocking system may be available for a door or a window of a house or the like. The car theft alarm device detects a car theft positively to produce an alarm signal. In the wireless door locking and unlocking system, the door-unlocking-signal receiving range is adjusted so that the occurrence of theft is positively prevented.

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Saitama, Japan

Masato Hashimoto