Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Reexamination Certificate
2007-04-17
2007-04-17
Harper, Kevin C. (Department: 2616)
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
C370S503000
Reexamination Certificate
active
10093324
ABSTRACT:
A line card for use in a node of a network to connect to optical network lines is provided. The line card includes an optical interface, and a serializer/deserializer (SERDES) operating at a first frequency. The line card also includes a framer operating at a second frequency where the first frequency is higher than the second frequency. The framer includes a digital step up converter to receive data from the SERDES and a digital step down converter to supply data to the SERDES. The step down converter includes a set of input buffers where each input buffer receives a word of nibbles from the framer. The input buffers are loaded one after another, but extraction from each of the input buffers to a multi-stage multiplexer is triggered so long as a non-reset window is preserved. The step up converter includes a set of input buffers and a register array where each input buffer receives a word of nibbles from the register array. The input buffers are loaded one after another, but extraction from the input buffers to a multi-stage multiplexer is triggered so long as a non-reset window is preserved.
REFERENCES:
patent: 6601186 (2003-07-01), Fox et al.
patent: 6765933 (2004-07-01), Michel et al.
patent: 2003/0189925 (2003-10-01), Wellbaum et al.
patent: 2004/0062261 (2004-04-01), Zecharia et al.
Limaye Pallavi Arun
Narsimhan Venkatesh
Sanghvi Chetan V.
Trikutam Sivaram Alukuru
Conexant Systems Inc.
Harper Kevin C.
Martine & Penilla & Gencarella LLP
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