Title:
DISTANCE MEASURING DEVICE AND DISTANCE MEASURING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/199804
Kind Code:
A1
Abstract:
A distance measuring device (101) comprises a light emission and exposure control unit (103) for generating a plurality of exposure control signals, and a data processing unit (106) including a selecting unit (107) for selecting at least two signal charges from among a plurality of signal charges, for each pixel (20), and a computing unit (108) for calculating first distance data indicating a distance to a target object, on the basis of the two selected signal charges, wherein: the plurality of exposure control signals include groups of a plurality of exposure control signals having mutual phase differences that are the same as a pulse width of the light emission control signal; the phase difference between an exposure control signal N belonging to one group and an exposure control signal (N+1) belonging to another group is less than the pulse width of the light emission control signal; and the selecting unit (107) selects a pair of signal charges including a first signal charge corresponding to the exposure control signal having the earliest phase among a plurality of signal charges determined to include reflected light.
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Inventors:
NAKAMURA SEIJI
OGAWA MAYU
NISHIMOTO MASAHIKO
OGAWA MAYU
NISHIMOTO MASAHIKO
Application Number:
PCT/JP2023/014003
Publication Date:
October 19, 2023
Filing Date:
April 04, 2023
Export Citation:
Assignee:
NUVOTON TECH CORPORATION JAPAN (JP)
International Classes:
G01S7/4865; G01C3/06; G01S17/894
Domestic Patent References:
| WO2020196087A1 | 2020-10-01 | |||
| WO2019188348A1 | 2019-10-03 |
Foreign References:
| JP2008249673A | 2008-10-16 | |||
| US20210080588A1 | 2021-03-18 | |||
| JP2016017799A | 2016-02-01 |
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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