Optical communications – Multiplex – Broadcast and distribution system
Reexamination Certificate
2004-09-14
2009-12-08
Singh, Dalzid (Department: 2613)
Optical communications
Multiplex
Broadcast and distribution system
C398S031000, C398S067000, C398S074000, C398S168000
Reexamination Certificate
active
07630639
ABSTRACT:
One embodiment of the present invention provides a system that facilitates transmission control in an Ethernet passive optical network, which includes a central node and at least one remote node, and wherein a remote node implements a data-link layer and a physical layer. During operation, the system starts by receiving, at the physical layer of a remote node, a word which is communicated from the data-link layer of the remote node, wherein the word may be a data word or an idle word. The system then delays the word for a pre-determined amount of time before allowing the word to be transmitted by a transmitter, thereby providing time for turning the transmitter on or off. The system also turns the transmitter on or off based on the content of the received words.
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Publication: “Ethernet Passive Optical Network (EPON): Building a Next-Generation Optical Access Network” by Glen Kramer and Gerry Pesavento, IEEE Communications Magazine, IEEE Service Center, Piscataway, NJ, vol. 40, No. 2, Feb. 2002, pp. 66-73, XP001125420, ISSN: 0163-6804, p. 71, left-hand column, line 40, right-hand column, line 8.
Boyd Edward W.
Kramer Glen
Park Vaughan & Fleming LLP
Singh Dalzid
Teknovus, Inc.
Yao Shun
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