The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 10, 2023
Filed:
Aug. 26, 2020
Hitachi-lg Data Storage, Inc., Tokyo, JP;
Takeshi Imai, Tokyo, JP;
HITACHI-LG DATA STORAGE, INC., Tokyo, JP;
Abstract
A distance measurement device includes a light emitting unit; a light receiving unit; a distance calculation unit that calculates a distance to an object; and a controller that controls the light emitting unit and the light receiving unit to determine whether or not there is interference from another distance measurement device, from a distance calculation result from the distance calculation unit. The controller includes a light emission and exposure period-setting unit that sets a light emission and exposure period of the light emitting unit and the light receiving unit, a distance variation measurement unit that measures a variation of distance values repeatedly obtained in a predetermined duration by the distance calculation unit, and an interference determination unit that compares a distance variation value to a threshold value which is determined in advance, to determine whether or not there is interference.