Title:
DISTANCE MEASUREMENT DEVICE, DISTANCE MEASUREMENT SYSTEM, DISTANCE MEASUREMENT METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/031603
Kind Code:
A1
Abstract:
The present invention achieves a configuration in which a light source unit, which has a plurality of light sources, and a distance measurement device (camera) are controlled by discrete clocks and the light sources can be placed in discretionary positions. In the present invention, a distance to an object is calculated through the photography using a ToF sensor of light that has been reflected by the surface of the object after being output from a plurality of light sources of a light source unit. A sensor clock for controlling the photography timing of the ToF sensor is a device-specific clock different from a light source unit clock for controlling the light emission timings of the light sources of the light source unit. A distance measurement device generates a plurality of difference calculation equations that are distance calculation equations for calculating the distances from each light source to the device and uses the generated difference calculation equations to calculate the distance to the object.
Inventors:
JO KENSEI (JP)
TAKEDA TOMOYA (JP)
MATSUMOTO NANA (JP)
TAKEDA TOMOYA (JP)
MATSUMOTO NANA (JP)
Application Number:
PCT/JP2019/027353
Publication Date:
February 13, 2020
Filing Date:
July 10, 2019
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
G01S7/486; G01S17/46
Foreign References:
| US20130242058A1 | 2013-09-19 | |||
| US20180180733A1 | 2018-06-28 | |||
| JP2010190675A | 2010-09-02 | |||
| US6373428B1 | 2002-04-16 |
Attorney, Agent or Firm:
MIYATA, Masaaki et al. (JP)
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