Data bus inversion detection mechanism

Details Data bus inversion detection mechanism Data bus inversion detection mechanism

2007-09-19

2010-02-23

Kindred, Alford W (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral adapting

C710S100000

Reexamination Certificate

active

07668988

ABSTRACT:
A bus inversion apparatus includes exclusive-OR gates and an inversion detector. The exclusive-OR gates are coupled to an instant data bus and a last data bus. The data buses have a corresponding plurality of bits, where the exclusive-OR gates perform a bitwise comparison of the data buses, and provide an exclusive-OR bus. The states of the exclusive-OR bus indicate whether corresponding bits of the data buses are different. The inversion detector counts the number of the corresponding bits that are different, and indicates that the instant data bus should be inverted. The inversion detector has a plurality of left shift circuits, each configured to perform a logical left shift of input bits as directed by the states of shift bits, where outputs of the each of the plurality of left shift circuits indicate a number of a subgroup of the corresponding bits that are different.

REFERENCES:
patent: 6584526 (2003-06-01), Bogin et al.
patent: 6898648 (2005-05-01), LaBerge
patent: 7139852 (2006-11-01), LaBerge
patent: 7501963 (2009-03-01), Hollis
patent: 7522073 (2009-04-01), Kao
patent: 2001/0027504 (2001-10-01), Devanney et al.
patent: 2002/0156953 (2002-10-01), Beiley et al.
patent: 2004/0068594 (2004-04-01), Asaro et al.
patent: 2005/0216630 (2005-09-01), Gaskins et al.
patent: 2006/0248326 (2006-11-01), Joshi
patent: 2007/0011379 (2007-01-01), Pawlowski
patent: 2007/0038789 (2007-02-01), Macri et al.
patent: 2007/0115733 (2007-05-01), Jang et al.
patent: 0444774 (1991-09-01), None

Affiliated with

Also associated with

Rating

Data bus inversion detection mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data bus inversion detection mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data bus inversion detection mechanism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4170663