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:
Jul. 28, 2020
Filed:
Feb. 17, 2017
Guo Cheng Wan Tong Information Technology Co., Ltd, Beijing, CN;
Abstract
The invention discloses a positioning light beam emission system, a method and an indoor positioning system. A positioning space includes a plurality of positioning sub-spaces. A plurality of positioning light beam emission devices are fixed at predetermined positions in the plurality of positioning sub-spaces, respectively, and the positioning light beam emission devices are used for sweeping positioning light beams toward the respective positioning sub-spaces in which they are located with a predetermined sweeping cycle and at a predetermined angular velocity. The positioning light beam has a linear cross section and is rotated about a sweeping rotation axis, and the sweeping rotation axis is not perpendicular to an extending direction of the linear cross section.