Patents by Inventor Keith Q. Chung

Keith Q. Chung has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for assigning bus grant requests
    Patent number: 7437495
    Abstract: Access to a bus is granted to one of a number of requesting communication circuits that each submitted a bus control request during a request period of an arbitration period in response to the entries in a priority table. If a requesting communication circuit has an identity and priority that match the identity and priority of a communication circuit stored in a row of the priority table that corresponds with the arbitration period, access to the bus is granted to the requesting communication circuit.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: October 14, 2008
    Assignee: Tellabs Petaluma, Inc.
    Inventors: Paul B. Ripy, Keith Q. Chung, Gary J. Geerdes, Christophe P. Leroy
  • Method and apparatus of allocating minimum and maximum bandwidths on a bus-based communication system
    Patent number: 7065594
    Abstract: Access to a bus is granted to one of a number of requesting communication circuits that each submitted a bus control request during a request period of an arbitration period in response to the entries in a priority table. If a requesting communication circuit has an identity and priority that match the identity and priority of a communication circuit stored in a row of the priority table that corresponds with the arbitration period, access to the bus is granted to the requesting communication circuit.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: June 20, 2006
    Assignee: Tellabs Petaluma, Inc.
    Inventors: Paul B. Ripy, Keith Q. Chung, Gary J. Geerdes, Christophe P. Leroy
  • Method and apparatus of allocating minimum and maximum bandwidths on a bus-based communication system with redundant communication circuits
    Patent number: 7003609
    Abstract: Access to a bus is granted to one of a number of requesting communication circuits that each submitted a bus control request during a request period of an arbitration period in response to grant information which can be stored in a primary and a backup priority table. If a requesting communication circuit has an identity and priority that match the identity and priority of a communication circuit stored in a row of the primary or backup priority table that corresponds with the arbitration period, and the identities stored in the tables match only one requesting communication circuit, access to the bus is granted to the requesting communication circuit.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: February 21, 2006
    Assignee: Tellabs Petaluma, Inc.
    Inventors: Paul B. Ripy, Keith Q. Chung, Gary J. Geerdes, Christophe P. Leroy