Decentralized bus arbitration using distributed arbiters having circuitry for latching lockout signals gated from higher priority arbiters

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United States of America Patent

PATENT NO 4745548
SERIAL NO

07009634

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A silicon semiconductor wafer containing a plurality of silicon integrated circuits formed therein or attached thereto contains at least one data bus to which some of the circuits are connected. Each of the circuits coupled to the data bus contains an arbitration request circuit which selectively passes a signal that requests that its circuit be given access to the data bus so it can transmit information to another circuit on the wafer. In addition, each of the circuits coupled to the data bus has an arbitration circuit which detects which of any of the circuits coupled to the data bus is requesting access to the data bus and facilitates its circuit gaining access to the data bus if its circuit has a higher preselected priority than any other circuit which is simultaneously seeking access to the data bus. The distribution of the arbitration request circuits and of the arbitration circuits simplifies layout and tends to improve the speed of operation.

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Patent Owner(s)

Patent OwnerAddress
AMERICAN TELEPHONE AND TELEGRAPH COMPANY550 MADISON AVENUE NEW YORK NEW YORK 10022 UNITED STATES OF AMERICA
BELL TELEPHONE LABORATORIES INCORPORATED600 MOUNTAIN AVENUE A CORP OF NY MURRAY HILL NJ 07974-2070

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Blahut, Donald E Holmdel, NJ 24 2220

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