Electronic device, method for controlling electronic device, and program

Patent metadata

Field	Value
Publication number	US-12429575-B2
Application number	US-202118000749-A
Country	US
Kind code	B2
Filing date	Jun 7, 2021
Priority date	Jun 29, 2020
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

An electronic device includes a transmission antenna, a reception antenna, and a signal processor. The transmission antenna is configured to transmit a transmission wave. The reception antenna is configured to receive a reflection wave resulting from reflection of the transmission wave. The signal processor is configured to detect an object based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflection wave. The signal processor is configured to output information regarding a point group representing the position of an object determined to be a stationary object based on the velocity of the object and the velocity of the electronic device.

First claim

The invention claimed is:

1. An electronic device comprising:
a transmission antenna configured to transmit a transmission wave;
a reception antenna configured to receive a reflection wave resulting from reflection of the transmission wave; and
a signal processor configured to detect an object based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflection wave,
wherein the signal processor outputs information regarding a point group representing a position of an object determined to be a stationary object based on a velocity of the object and a velocity of the electronic device,
the signal processor outputs information regarding the point group by superimposing a position of an object determined to be a stationary object in a time period defined by at least one frame of the transmission wave or the reflection wave, and
the signal processor determines a number of frames of the at least one frame of the transmission wave or the reflection wave in accordance with a velocity of the electronic device.

2. The electronic device according to claim 1 ,
wherein the signal processor outputs information regarding the point group by superimposing points representing a position of an object determined to be a stationary object based on the velocity of the object and the velocity of the electronic device.

3. The electronic device according to claim 1 ,
wherein the signal processor outputs information regarding the point group without superimposing points representing a position of an object determined not to be a stationary object based on the velocity of the object and the velocity of the electronic device.

4. The electronic device according to claim 1 ,
wherein when the velocity of the electronic device is not zero, the signal processor determines the number of frames of the at least one frame of the transmission wave or the reflection wave based on an acceptable range of error for a distance from the electronic device to the object.

5. The electronic device according to claim 1 ,
wherein when the velocity of the electronic device is zero, the signal processor determines the number of frames of the at least one frame of the transmission wave or the reflection wave based on a maximum number permitted in a system of the electronic device.

6. The electronic device according to claim 1 ,
wherein the signal processor determines the number of frames of the at least one frame of the transmission wave or the reflection wave as a fixed value based on an absolute value of a maximum velocity of the electronic device.

7. The electronic device according to claim 1 ,
wherein the signal processor performs processing for forgetting the information regarding the point group at a prescribed timing.

8. The electronic device according to claim 1 ,
wherein the signal processor performs prescribed clustering processing after forgetting the information regarding the point group.

9. The electronic device according to claim 1 ,
wherein the signal processor detects an object based on a transmission signal transmitted from multiple positions as the transmission wave and a reception signal received at multiple positions as the reflection wave.

10. The electronic device according to claim 9 ,
wherein the signal processor integrates velocities of a point group generated as a result of detecting an object based on the transmission signal and the reception signal.

11. The electronic device according to claim 9 ,
wherein the signal processor integrates velocities of a point group and then outputs information regarding the point group based on a result of detecting an object based on the transmission signal and the reception signal.

12. The electronic device according to claim 1 ,
wherein the electronic device is installed on or in a prescribed mobile object, and
the signal processor acquires information regarding a velocity of the electronic device, as a velocity of the mobile object, from a controller configured to control the mobile object.

13. A method for controlling an electronic device, the method comprising:
transmitting a transmission wave using a transmission antenna;
receiving a reflection wave resulting from reflection of the transmission wave using a reception antenna;
detecting an object based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflection wave;
outputting information regarding a point group representing a position of an object determined to be a stationary object based on a velocity of the object and a velocity of the electronic device, wherein the outputting includes outputting information regarding the point group by superimposing a position of an object determined to be a stationary object in a time period defined by at least one frame of the transmission wave or the reflection wave; and
determining a number of frames of the at least one frame of the transmission wave or the reflection wave in accordance with a velocity of the electronic device.

14. A non-transitory computer-readable recording medium storing computer program instructions, which when executed by a computer, cause the computer to:
transmit a transmission wave using a transmission antenna;
receive a reflection wave resulting from reflection of the transmission wave using a reception antenna;
detect an object based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflection wave;
output information regarding a point group representing a position of an object determined to be a stationary object based on a velocity of the object and a velocity of an of the electronic device, wherein the program instructions cause the computer to output information regarding the point group by superimposing a position of an object determined to be a stationary object in a time period defined by at least one frame of the transmission wave or the reflection wave; and
determine a number of frames of the at least one frame of the transmission wave or the reflection wave in accordance with a velocity of the electronic device.

Assignees

• Kyocera Corp

Inventors

• Kuroda Jun
• Sahara Tooru
• Tong Fangwei
• Homma Takuya

Classifications

• G01S13/931 Primary

  of land vehicles · CPC title

• G01S7/352

  Receivers · CPC title

• G01S2013/93275

  in the bumper area · CPC title

• G01S2013/9314

  Parking operations · CPC title

• G01S13/878

  Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector (G01S13/874 takes precedence) · CPC title