A keyless entry system includes a first communication apparatus and a second communication apparatus. The first communication apparatus includes first transmitter, first receiver, and first two-way communication device. The second communication apparatus includes second receiver, second transmitter, and second two-way communication device. The first communication apparatus or the second communication apparatus includes electric field strength detector. In a case where the first communication apparatus and the second communication apparatus are not connected to each other through two-way communication or electric field strength detected by the electric field strength detector is less than a predetermined value, the first communication apparatus stops a call function of the first transmitter or the second communication apparatus stops a wait function of the second receiver.
Keyless entry system
2017-09-12
Patent
Electronic Resource
English
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte / G08C Übertragungssysteme für Messwerte, Regel-, Steuer- oder ähnliche Signale , TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS |
Keyless entry control system, keyless entry method and keyless entry device for vehicle
European Patent Office | 2023
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