Title:
LIGHT DETECTION DEVICE AND LIGHT DETECTION SYSTEM
Document Type and Number:
Japanese Patent JP2022124396
Kind Code:
A
Abstract:
To provide a light detection device that can enhance detection accuracy.SOLUTION: A light detection device of the present disclosure includes: a clock signal generation unit that has a reference oscillation circuit for performing an oscillation operation and generates a clock signal with a predetermined frequency by performing a phase synchronization operation; a first light-receiving unit that generates a first pulse signal according to a light-receiving result of a first light-receiving element; a first timing detection unit that detects a first light-receiving timing in the first light receiving unit and has a first counter that generates a first code by performing a counting operation based on the clock signal, a first oscillation circuit that generates a first multiphase clock signal by performing an oscillation operation based on the first pulse signal, and a first latch unit that latches a first code and a second code according to a first multiphase clock signal based on the first pulse signal; and a correction processing unit that performs a first correction process according to a frequency difference between a frequency of the clock signal and a frequency of the first multiphase clock signal.SELECTED DRAWING: Figure 5
Inventors:
SAKAZUME SHUNSUKE
Application Number:
JP2021022139A
Publication Date:
August 25, 2022
Filing Date:
February 15, 2021
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP
International Classes:
G01S7/497; G01C3/06; G01S7/4865; G01S17/14
Attorney, Agent or Firm:
Patent Attorney Corporation Tsubasa International Patent Office
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