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US 10,870,413 B2Granted
Signal direction detection based vehicle remote entry control method and device
AssigneeKabushiki Kaisha Toshiba
InventorsZiming Zhu, Zubeir Bocus
Life of this patent
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Abstract
A method of remotely controlling access to a resource comprising: transmitting a plurality of signals wherein each signal is transmitted using a different antenna from a plurality of antennas, detecting a received signal at a remote key, performing angle-of-arrival analysis on the received signal; and transmitting an authorisation message from the remote key if the received signal comprises a plurality of signal components with a predetermined characteristic.
Claims17
A method of remotely controlling access to a resource, the method comprising:
- transmitting a first signal including a request for authorization message via a first antenna;
- transmitting a second signal including an interference signal uncorrelated with the first signal via a second antenna different from the first antenna;
- receiving the first signal and the second signal at a remote key;
- performing angle-of-arrival analysis on the first signal received;
- performing angle-of-arrival analysis on the second signal received;
- and
- transmitting the authorization message from the remote key when the first signal received and the second signal received comprise a plurality of signal components separated by a predetermined angle more than a threshold.
4 more elements
A remote key comprising:
- a plurality of antennas;
- and
- a processor configured to:
- receive a first signal including a request for an authorization message via a first antenna;
- receive a second signal including an interference signal uncorrelated with the first signal via a second antenna different from the first antenna;
- perform angle-of-arrival analysis on the first signal received;
- perform angle-of-arrival analysis on the second signal received;
- and
- transmit the authorization message when the first signal received and the second signal received comprise a plurality of signal components separated by a predetermined angle more than a threshold.
6 more elements
A control unit for remote key entry comprising:
- a first antenna and a second antenna;
- a control output configured to unlock access to a resource;
- and
- a processor configured to:
- transmit a first signal including a request for authorization message via the first antenna;
- transmit a second signal including an interference signal uncorrelated with the first signal via the second antenna different from the first antenna;
- receive the authorization message from a remote key when the remote key determines the first signal transmitted and the second signal transmitted comprise a plurality of signal components separated by a predetermined angle more than a threshold;
- and
- instruct the control output to unlock access to the resource when the authorization message was transmitted by an authorized user.
6 more elements
Dependencies are inferred from the claim text.