Title:
SOLID-STATE IMAGING ELEMENT, SENSING SYSTEM, AND CONTROL METHOD FOR SOLID-STATE IMAGING ELEMENT
Document Type and Number:
WIPO Patent Application WO/2021/215113
Kind Code:
A1
Abstract:
This invention reduces the circuitry scale in a solid-state imaging element that measures distance. The solid-state imaging element includes a pulse signal generation unit and up-down counters. The pulse signal generation unit includes: an avalanche photodiode that converts incident light, which contains reflected light of irradiated light emitted in a predetermined ON period, to a photocurrent and amplifies the same; and a quench circuit that generates a pulse signal on the basis of the amplified photocurrent. The up-down counters each perform either an up count or a down count each time the pulse signal is generated in the ON period, and perform the other of the up count and the down count each time the pulse signal is generated in an OFF period that does not correspond to the ON period.
Inventors:
NAKAGAWA KEI (JP)
HANZAWA KATSUHIKO (JP)
TANIKAME TAKAO (JP)
HANZAWA KATSUHIKO (JP)
TANIKAME TAKAO (JP)
Application Number:
PCT/JP2021/007411
Publication Date:
October 28, 2021
Filing Date:
February 26, 2021
Export Citation:
Assignee:
SONY GROUP CORP (JP)
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
G01S7/4914; G01S7/4865; G01S17/894; H01L31/10
Foreign References:
| US20200088843A1 | 2020-03-19 | |||
| US20170139041A1 | 2017-05-18 | |||
| JP2004523769A | 2004-08-05 | |||
| JP2019047383A | 2019-03-22 | |||
| JP2016208517A | 2016-12-08 |
Attorney, Agent or Firm:
MARUSHIMA, Toshikazu (JP)
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