A portable device acquires a signal of noise component data that is based on signal intensity of a signal received in an OFF time in which the portable device does not communicate with the vehicle-side device, and then transmits an information signal that is based on the noise component data, and a vehicle-side device transmits a measurement signal controlled based on the information signal, at a predetermined time period.
Keyless entry device
2016-05-17
Patent
Electronic Resource
English
Keyless entry control system, keyless entry method and keyless entry device for vehicle
European Patent Office | 2023
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