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:
Apr. 13, 2021
Filed:
Sep. 15, 2017
Kabushiki Kaisha Toshiba, Tokyo, JP;
Shoji Ootaka, Yokohama Kanagawa, JP;
Yutaka Shimizu, Yokohama Kanagawa, JP;
Ichiro Seto, Fuchu Tokyo, JP;
Yoshiharu Nito, Yokohama Kanagawa, JP;
Masaki Nishikawa, Yokohama Kanagawa, JP;
Takayuki Kato, Kawasaki Kanagawa, JP;
Shigeyasu Iwata, Hamura Tokyo, JP;
Katsuya Nonin, Kawasaki Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A distance measuring device includes a calculating section configured to calculate, based on phase information acquired by a first device and a second device, at least one of which is movable, a distance between the first device and the second device. The first device includes a first reference signal source and a first transceiver configured to transmit two or more first carrier signals and receives two or more second carrier signals using an output of the first reference signal source. The second device includes a second reference signal source configured to operate independently from the first reference signal source and a second transceiver configured to transmit the second carrier signals and receives the first carrier signals using an output of the second reference signal source. The calculating section calculates the distance based on a phase detection result obtained by reception of the first and second carrier signals.