Control device and control method

Patent metadata

Field	Value
Publication number	US-12336004-B2
Application number	US-202117914547-A
Country	US
Kind code	B2
Filing date	Feb 1, 2021
Priority date	Jun 9, 2020
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

A control device and a control method that can reduce power consumption for waiting for reception of a signal are provided. The control device includes a controller configured to control a communicator such that the communicator performs wireless communication with another device. The controller controls a reception waiting time of a predetermined signal which is transmitted from the other device by the wireless communication on the basis of acquired acquisition information.

First claim

The invention claimed is:

1. A control device comprising a controller configured to control a communicator such that the communicator performs wireless communication with another device,
wherein the controller controls, on a basis of acquired acquisition information, a reception waiting time of a predetermined signal which is transmitted from the other device by the wireless communication, and
the controller acquires information, as the acquisition information, on a request-response authentication performed between the control device and the other device before the predetermined signal is transmitted.

2. The control device according to claim 1 , wherein the controller performs control for starting reception waiting of the predetermined signal and ending the reception waiting after a prescribed time has elapsed after the starting as control of the reception waiting time.

3. The control device according to claim 2 , wherein the controller performs control for starting the reception waiting at a predetermined timing based on the acquisition information.

4. The control device according to claim 3 , wherein the controller performs control for ending the reception waiting after a first prescribed time based on the acquisition information has elapsed after the reception waiting has been started.

5. The control device according to claim 4 , wherein the controller performs a process of receiving the predetermined signal from the other device and fetching the received signal as the reception waiting.

6. The control device according to claim 4 , wherein the controller performs control for ending the reception waiting when the predetermined signal is received during the reception waiting.

7. The control device according to claim 6 , wherein the controller performs a distance measuring process of measuring a distance between the other device and the communicator using the predetermined signal.

8. The control device according to claim 4 , wherein the controller predicts a time at which the predetermined signal is transmitted from the other device as the predetermined timing on the basis of the acquisition information.

9. The control device according to claim 4 , wherein the controller performs control for starting the reception waiting again after a second prescribed time has elapsed from the ending when the reception waiting has ended without receiving the predetermined signal.

10. The control device according to claim 4 , wherein the controller performs an authentication process of authenticating the other device using information acquired through wireless communication with the other device, and
wherein the predetermined signal is a signal for notifying that the authentication process has started.

11. The control device according to claim 10 , wherein the controller performs a process of measuring a distance between the other device and the communicator and authenticating the other device on the basis of the measured distance as the authentication process.

12. The control device according to claim 1 , wherein the responding is performed using a wireless communication standard different from a wireless communication standard used for transmission and reception of the predetermined signal.

13. The control device according to claim 1 , wherein an ultra-wide band (UWB) is used in the wireless communication which the communicator performs with the other device to receive the predetermined signal.

14. The control device according to claim 1 , wherein the control device is mounted in a mobile object, and
wherein the other device is carried by a user of the mobile object.

15. A control device comprising a controller configured to control a communicator such that the communicator performs wireless communication with another device,
wherein the controller controls, on a basis of acquired acquisition information, a reception waiting time of a predetermined signal which is transmitted from the other device by the wireless communication, and
the controller acquires information, as the acquisition information, indicating that the predetermined signal has been received during the reception waiting time and controls the reception waiting time of a next signal on the basis of the acquired information.

16. A control method that is performed by a processor, the control method comprising:
controlling a communicator such that the communicator performs wireless communication with another device;
acquiring acquisition information on a request-response authentication performed between the communicator and the other device; and
controlling, on a basis of the acquisition information, a reception waiting time of a predetermined signal which is transmitted from the other device by the wireless communication.

Assignees

• Tokai Rika Co Ltd

Inventors

• Ohashi Yosuke
• Furuta Masateru
• Kono Yuki
• Nitta Shigenori

Classifications

• H04W12/06

  Authentication · CPC title

• G01S5/0063

  of measured values, i.e. measurement on base station and position calculation on mobile · CPC title

• G07C2209/63

  Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle · CPC title

• G07C9/00309

  operated with bidirectional data transmission between data carrier and locks · CPC title

• H04L63/0853

  using an additional device, e.g. smartcard, SIM or a different communication terminal (cryptographic mechanisms or cryptographic arrangements for entity authentication involving additional secure or trusted devices H04L9/3234) · CPC title