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. 23, 2019
Filed:
Nov. 07, 2017
Electronics and Telecommunications Research Institute, Daejeon, KR;
Byung-Hee Son, Yongin-si, KR;
Geun Yong Kim, Gwangju, KR;
Jae In Kim, Gwangju, KR;
Hee Do Kim, Seoul, KR;
Moon Kyun Oh, Daejeon, KR;
Hark Yoo, Gwangju, KR;
Dongsoo Lee, Yongin-si, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A terminal status monitoring apparatus connected to a terminal at an optical subscriber side in an optical network is provided. A signal transferring unit transfers a downlink optical signal to the terminal and receives, as a reflected optical signal, the downlink optical signal which is reflected at the terminal. A signal receiving unit measures an intensity of the reflected optical signal. A signal processing unit determines a connection status of a terminal device at the terminal by comparing an intensity of the downlink optical signal with the intensity of the reflected optical signal. A signal output unit outputs the connection status.