Circuit to reduce rail noise voltage spikes due to switching...

Details Circuit to reduce rail noise voltage spikes due to switching... Circuit to reduce rail noise voltage spikes due to switching...

2006-05-31

2009-10-06

Baker, Stephen M (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Error/fault detection technique

C341S050000, C341S058000

Reexamination Certificate

active

07600181

ABSTRACT:
A circuit to reduce noise spikes on the power and ground rails of a chip when switching over an input-output bus, the circuit comprising an encoder to encode a word before transmission over the input-output bus so that the difference in the number of 1 bits and the number of 0 bits in the encoded word is upper bounded, where the upper bound is less than the length of the original word before encoding. An embodiment circuit to implement this encoding comprises partitioning the word into a plurality of smaller words. An embodiment circuit further comprises a number of stages, where in the first stage, there are a plurality of encoders to encode in pair-wise fashion the smaller words. Additional stages also comprise a plurality of encoders, each encoder performing a pair-wise encoding of words outputted by a previous stage. Other embodiments are described and claimed.

REFERENCES:
patent: 5574921 (1996-11-01), Curran
patent: 5917364 (1999-06-01), Nakamura
patent: 6118297 (2000-09-01), Schenck
patent: 6243779 (2001-06-01), Devanney et al.
patent: 6489900 (2002-12-01), Shin et al.
patent: 6614369 (2003-09-01), Widmer
patent: 7221292 (2007-05-01), Hein
patent: 7397395 (2008-07-01), Tschanz et al.
patent: 7406608 (2008-07-01), Joshi, Mayur
patent: 7408482 (2008-08-01), Park et al.
patent: 7471219 (2008-12-01), Lastras-Montano
patent: 7501963 (2009-03-01), Hollis

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