Method for determining optimal configuration for multinode bus

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United States of America Patent

PATENT NO 6484293
SERIAL NO

09617519

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Abstract

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A Scheme-1 Termination scheme maximizes system signaling rates by minimizing the signal settling-time when the distance from the middle node to the intersection of the transmission lines is much smaller than the sum of the distances from the end nodes to the intersection of the transmission lines. If the distance from the middle node to the intersection of the transmission lines is not much smaller than the sum of the distances from the end nodes to the intersection of the transmission lines, it has been discovered that a Scheme-2 Termination scheme minimizes the signal settling-time. Alternately, when a Scheme-3 Termination scheme is available, the Scheme-3 Termination scheme maximizes system signaling rates by minimizing the signal settling time when the third transmission line length is more than the second transmission line length divided by two. Otherwise a Scheme-1 Termination scheme minimizes the signal settling time. Additionally, for a given termination scheme, the settling time can be changed by adjusting the lengths of the transmission lines. The impact of such adjustments on settling time can be predicted and maximized by following certain formulas.

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Patent Owner(s)

  • ORACLE AMERICA, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Starr, Jonathan E Santa Clara, CA 26 567

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