Optical communications – Transmitter
Reexamination Certificate
2005-09-20
2005-09-20
Bello, Agustin (Department: 2633)
Optical communications
Transmitter
C398S188000, C398S192000, C398S198000
Reexamination Certificate
active
06947674
ABSTRACT:
Provided are a multiplexing circuit for multiplexing a memory output signal output by a memory for temporarily accumulating a low-order group signal with an overhead bit necessary for optical digital transmission and a pattern generation circuit for generating an unfixed pattern having no fixed value. An unfixed pattern is applied to the multiplexing circuit while the memory outputs a fixed pattern. A selection circuit provided between the multiplexing circuit and the memory selects an unfixed pattern between a fixed pattern output by the memory and an unfixed pattern output by the pattern generation circuit.
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Japanese Office Action issued May 16, 2003 (w/English translation of relevant portion).
Hara Yasushi
Hayasaka Junichi
Bello Agustin
Dickstein Shapiro Morin & Oshinsky LLP.
NEC Corporation
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