An in-vehicle device includes a plurality of transmitting antennas, an in-vehicle device transmitter configured to transmit measurement signals via the plurality of respective transmitting antennas, an in-vehicle device receiver configured to receive, from a portable device, a measurement result signal that includes measurement data of received signal strengths of the respective measurement signals that have been transmitted from the plurality of respective transmitting antennas, and an in-vehicle device controller configured to determine whether to identify a location of the portable device based on the received signal strengths included in the measurement result signal, and, in a case where the in-vehicle device controller has determined that the location of the portable device is to be identified, identify the location of the portable device based on the received signal strengths included in the measurement result signal.
In-vehicle device, recording medium, and keyless entry system
2020-12-29
Patent
Electronic Resource
English
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G08C Übertragungssysteme für Messwerte, Regel-, Steuer- oder ähnliche Signale , TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS / H04B TRANSMISSION , Übertragung |
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