A position determining device configured to determine the position of a portable device 3 configured to receive one or more radio signals transmitted from one or more antennas ANT inside a vehicle, respectively, includes a door state determining part 231 configured to determine the open or closed state of a door of the vehicle, an evaluation value calculating part 331 configured to calculate an evaluation value related to the position of the portable device 3 based on the received signal strength of the one or more radio signals at the portable device, and a determination part 233 configured to determine that the portable device 3 is positioned inside the vehicle when the evaluation value satisfies a predetermined condition. At least one of the predetermined condition and a method of calculating the evaluation value is changed in accordance with the open or closed state of the door determined by the door state determining part 231.
POSITION DETERMINING DEVICE AND METHOD, PROGRAM, AND KEYLESS ENTRY SYSTEM
POSITIONSBESTIMMUNGSVORRICHTUNG UND -VERFAHREN, PROGRAMM UND SCHLÜSSELLOSES ZUGANGSSYSTEM
DISPOSITIF ET PROCÉDÉ DE DÉTERMINATION DE POSITION, PROGRAMME ET SYSTÈME D'ENTRÉE SANS CLÉ
2019-12-04
Patent
Electronic Resource
English
Position determining device and method, and keyless entry system
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