Multispeed communications device

Details Multispeed communications device Multispeed communications device

2006-11-14

2006-11-14

Young, Brian (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from nrz codes

Reexamination Certificate

active

07135996

ABSTRACT:
A physical layer device for a network device comprises a converter module that selectively converts an n-bit input to an m-bit output based on first and second mapping functions. A scrambler module selectively scrambles the m-bit output. An encoding module receives the m-bit output from the scrambler module and selectively maps the m-bit output based on the first mapping function to three level output signals and the m-bit output based on the second mapping function to four level output signals.

REFERENCES:
patent: 6795450 (2004-09-01), Mills et al.
patent: 2005/0135413 (2005-06-01), Yang et al.

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