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:
Aug. 08, 2023
Filed:
Aug. 28, 2018
Konica Minolta, Inc., Tokyo, JP;
Masanori Yoshizawa, Tokyo, JP;
Hideki Morita, Tokyo, JP;
Konica Minolta, Inc., Tokyo, JP;
Abstract
The present invention is to provide a distance measuring device capable of distinguishing between a reflection from fog or the like and a reflection from an actually existing object in an environment such as fog. The invention is a distance measuring device including a light-emitting elementthat transmits a signal, a light-receiving elementthat receives a signal transmitted by the light-emitting elementand reflected by an object, and outputs a reception signal corresponding to a received signal strength, a comparatorthat outputs a first signal equal to or greater than a first threshold value with respect to signal strength and a second signal equal to or greater than a second threshold value higher than the first threshold value from the reception signal, and a signal processing unitthat distinguishes the reception signal as valid or invalid or not from a relationship between a first time span from when the first signal becomes equal to or greater than the first threshold value until the first signal becomes less than the first threshold value and a second time span from when the second signal becomes equal to or greater than the second threshold value until the second signal becomes less than the second threshold value.