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:
Jan. 29, 2019
Filed:
Mar. 04, 2016
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Shoko Ohteru, Tokyo, JP;
Namiko Ikeda, Tokyo, JP;
Saki Hatta, Tokyo, JP;
Satoshi Shigematsu, Tokyo, JP;
Nobuyuki Tanaka, Tokyo, JP;
Kenji Kawai, Tokyo, JP;
Junichi Kato, Tokyo, JP;
Tomoaki Kawamura, Tokyo, JP;
Hiroyuki Uzawa, Tokyo, JP;
Yuki Arikawa, Tokyo, JP;
Naoki Miura, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
A selection and distribution circuit () is provided between N optical transceivers () and one PON control circuit (). The selection and distribution circuit () selects the optical transceiver () corresponding to an upstream frame that time-divisionally arrives, thereby transferring the upstream frame opto-electrically converted by the transceiver () to the PON control circuit () and distributing a downstream frame from the PON control circuit () to each optical transceiver (). A power supply control circuit () stops power supply to at least one of one of optical transceivers () that are not used to transfer the frame of the optical transceivers () and a circuit that is not used to transfer the frame in the selection and distribution circuit (). This can reduce the system cost per ONU in the optical transmission system.