Wireless communication system
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsMichihiko Fukuda, Masami Takigawa, Hitoshi Namba
Life of this patent
Estimating the term…
Abstract
A vehicle (20) transmits an LF command (Wa), an electronic key (30) transmits, to the vehicle (20), an RF command responsive to the LF command (Wa), the vehicle (20) transmits, to the electronic key (30), an LF command (Wb) having a longer packet length than the LF command (Wa), and the electronic key (30) transmits, to the vehicle (20), an RF command responsive to the LF command (Wb) on the basis of the electric field strength of an LF-RSSI burst of a part of the LF command (Wb), thus turning on an interior light (501).
Claims20
A wireless communication system comprising:
- a vehicle;
- and
- a portable device,
- wherein the vehicle includes a light emitting circuit capable of changing illuminance and a first wireless communication circuit capable of performing wireless communication with the portable device,
- wherein the portable device includes a second wireless communication circuit capable of performing wireless communication with the first wireless communication circuit of the vehicle,
- wherein at least in a case where the light emitting circuit of the vehicle has a first illuminance, the first wireless communication circuit of the vehicle transmits a first packet,
- wherein in a case where the second wireless communication circuit receives the first packet, the portable device transmits a first instruction to the vehicle,
- wherein in a case where the vehicle receives the first instruction, the first wireless communication circuit of the vehicle transmits a second packet having a packet length longer than that of the first packet,
- wherein in a case where the second wireless communication circuit receives the second packet, the portable device transmits a second instruction to the vehicle based on an electric field intensity of at least a part of the second packet, and
- wherein in a case where the vehicle receives the second instruction, the light emitting circuit of the vehicle has a second illuminance that is brighter than the first illuminance.
A wireless communication system comprising:
- a wireless communication device capable of being mounted on a vehicle;
- and
- a portable device,
- wherein the vehicle includes a light emitting circuit capable of changing illuminance,
- wherein the wireless communication device includes a first wireless communication circuit capable of performing wireless communication with the portable device,
- wherein the portable device includes a second wireless communication circuit capable of performing wireless communication with the first wireless communication circuit of the wireless communication device,
- wherein at least in a case where the light emitting circuit of the vehicle has a first illuminance, the first wireless communication circuit of the wireless communication device transmits a first packet,
- wherein in a case where the second wireless communication circuit receives the first packet, the portable device transmits a first instruction to the wireless communication device,
- wherein in a case where the wireless communication device receives the first instruction, the first wireless communication circuit of the wireless communication device transmits a second packet having a packet length longer than that of the first packet,
- wherein in a case where the second wireless communication circuit receives the second packet, the portable device transmits a second instruction to the wireless communication device based on an electric field strength of at least a part of the second packet, and
- wherein in a case where the wireless communication device receives the second instruction, the light emitting circuit of the vehicle has a second illuminance that is brighter than the first illuminance.
Dependencies are inferred from the claim text.