Reduced peak EMI bus using variable bit rate spreading

Details Reduced peak EMI bus using variable bit rate spreading Reduced peak EMI bus using variable bit rate spreading

2007-08-21

2007-08-21

Pezzlo, John (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S463000, C375S346000, C713S400000

Reexamination Certificate

active

10194351

ABSTRACT:
Systems and methods are described for a reduced peak EMI bus using variable bit rate spreading. A method for reducing radiated Electro-Magnetic Interference from a wire communication bus transferring data between one or more physically separate modules or units comprises changing a data clock period controlling a rate of data bits on a communications bus. A Distributed Systems Interface communication bus data transmission protocol includes: alternating a data bit-rate between a first bit-rate and a second bit-rate on a bit-by-bit basis; transmitting a bit over the distributed systems interface communication bus according to the alternating data bit-rate; and varying a difference between the first bit-rate and the second bit-rate.

REFERENCES:
patent: 6144748 (2000-11-01), Kerns
patent: 6681337 (2004-01-01), Smith et al.
patent: 6948080 (2005-09-01), Farwell

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