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. 16, 2013
Filed:
Sep. 22, 2011
Masahiko Mizutani, Yokohama, JP;
Yusuke Yajima, Fujisawa, JP;
Takayuki Kanno, Yokohama, JP;
Takeshi Yasuda, Yokohama, JP;
Masahiko Mizutani, Yokohama, JP;
Yusuke Yajima, Fujisawa, JP;
Takayuki Kanno, Yokohama, JP;
Takeshi Yasuda, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Communication arrangements wherein each of ONUs of a first or second PON transmits data toward a connected first or second OLT after a wait time period designated by the connected first or second OLT; the first communication device of the first packet communication network sends a first frame for measuring communication time period, to the second communication device of the second packet communication network through the first PON, and sends a second frame for measuring communication time period, to the second communication device through the second PON; and the second communication device calculates a difference of communication time period between the received first and second frames, and instructs the first or second OLT of the first or second PON, for correcting a wait time period which is set to the one or plural ONUs connected to the first or second OLT, based on the difference between communication time periods.