Optical communications – Multiplex – Optical switching
Reexamination Certificate
2005-10-18
2005-10-18
Phan, Hanh (Department: 2633)
Optical communications
Multiplex
Optical switching
C398S045000, C398S046000, C398S047000, C398S048000, C398S050000, C398S054000, C398S056000, C370S525000, C370S366000, C370S433000, C370S468000
Reexamination Certificate
active
06957018
ABSTRACT:
An optical packet exchange apparatus and an optical switch in which search for a connection pattern between an input unit devoid of a packet to be transmitted and an output unit devoid of a packet to be received is reduced to enable fast switch control even in cases wherein the number of channels of the exchange apparatus is increased or network speed is higher. A plurality of input units, a plurality of output units and an optical switch are provided. Each input unit includes an input buffer unit, a parallel/serial conversion unit, an electrical/optical conversion unit, and a dummy packet insertion unit for sending a dummy packet if there is no packet to be transmitted. Each output unit includes an exchange counterpart contention resolution unit for controlling the exchange counterpart, an optical/electrical conversion unit, a serial/parallel conversion unit, and a packet eliminating unit. The exchange counterpart contention resolution unit controls the packet eliminating unit to eliminate a dummy packet.
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Shingakugihou [Telecommunications News] SSE98-165˜175 (SSE98-170).
Araki Soichiro
Henmi Naoya
Maeno Yoshiharu
Suemura Yoshihiko
Tajima Akio
Phan Hanh
Scully Scott Murphy & Presser
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