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:
Sep. 15, 2026
Filed:
Feb. 27, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Kohei Asano, Kanagawa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A communication apparatus capable of determining the presence or absence of an obstacle between devices while achieving highly accurate distance measurement. The communication apparatus communicates with a distance measurement device. The communication apparatus outputs, at a constant interval, an advertisement packet including information to be used for first distance measurement using a signal strength of radio waves, receives, from the distance measurement device, an inquiry wave for performing second distance measurement using a time of arrival of radio waves, stops output of the advertisement packet in accordance with reception of the inquiry wave, and when a predetermined time has elapsed since the reception of the inquiry wave, outputs a response wave to be used for the second distance measurement to the distance measurement device and resumes output of the advertisement packet.