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:
May. 26, 2020
Filed:
Nov. 01, 2018
Fuji Xerox Co., Ltd., Tokyo, JP;
Scott Carter, Menlo Park, CA (US);
Daniel Avrahami, Mountain View, CA (US);
Nami Tokunaga, Cupertino, CA (US);
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
A method of controlling access to an enclosed area having a boundary includes generating a first inaudible audio signal inside the enclosed area, and generating a second signal, each configured to be sensed by a sensing device, wherein the first inaudible audio signal is not capable of penetrating the boundary; determining a state of the enclosed area, based on either the first inaudible audio signal, or the first inaudible audio signal and the second signal, being sensed by the sensing device; and based on the state, generating an instruction to perform access control for the enclosed area.