Title:
DISTANCE MEASUREMENT DEVICE AND DISTANCE MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2021/157401
Kind Code:
A1
Abstract:
This distance measurement device (1) comprises a light reception unit (110), a light source unit (200), a conversion unit (134), and a calculation unit (300). The light reception unit (110) receives light and outputs a pixel signal. The light source unit (200) projects light according to a first irradiation pattern in a first period, and projects light according to a second irradiation pattern in a second period. The conversion unit (134) successively converts the pixel signal bit-by-bit by binary search, and performs conversion of a first number of bits in the first period and outputs a first digital signal, and performs conversion with a second number of bits, which is smaller than the first number of bits, in the second period and outputs a second digital signal. The calculation unit (300) calculates a distance on the basis of the first digital signal and the second digital signal.
Inventors:
AKAHANE TAKAHIRO (JP)
IKEDA YUSUKE (JP)
KAIZU SHUN (JP)
HIRATA EIJI (JP)
YUASA HIROSHI (JP)
ETOU SHINICHIROU (JP)
KIMURA YASUTAKA (JP)
OYAKAWA TAKESHI (JP)
YOSHIMOCHI NAOKI (JP)
IKEDA YUSUKE (JP)
KAIZU SHUN (JP)
HIRATA EIJI (JP)
YUASA HIROSHI (JP)
ETOU SHINICHIROU (JP)
KIMURA YASUTAKA (JP)
OYAKAWA TAKESHI (JP)
YOSHIMOCHI NAOKI (JP)
Application Number:
PCT/JP2021/002394
Publication Date:
August 12, 2021
Filing Date:
January 25, 2021
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
SONY GROUP CORP (JP)
SONY GROUP CORP (JP)
International Classes:
G01B11/25; G01C3/06; G06T7/55; G06T7/60
Domestic Patent References:
| WO2018135315A1 | 2018-07-26 |
Foreign References:
| JP2012013453A | 2012-01-19 | |||
| US20170054922A1 | 2017-02-23 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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