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. 30, 2023
Filed:
Jan. 14, 2022
Suprema Hq Inc., Seongnam-si, KR;
Dong Mok Shin, Seongnam-si, KR;
SUPREMA HQ INC., Seongnam-si, KR;
Abstract
An access control method of a door operating device that communicates with a user terminal, the access control method may comprise determining a distance between the door operating device and the user terminal based on a received signal strength corresponding to a transmitted signal from at least one of the door operating device and the user terminal; determining whether the distance between the door operating device and the user terminal is within a first distance; establishing a communication connection between the door operating device and the user terminal when the distance between the door operating device and the user terminal is within the first distance; determining whether the distance between the door operating device and the user terminal is within a second distance; and obtaining open authentication information when the distance between the door operating device and the user terminal is within the second distance.