Patents by Inventor Frank K. Chui

Frank K. Chui 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 for implementing automatic protection switching (APS) using cell replication
    Patent number: 6876660
    Abstract: A method for cell replication in which a request for data transmission and mapping information are received by a crossbar and a scheduler and are sent by one of a plurality of software configurable slot remap registers. The mapping information is indicative of a destination slot and a backup destination slot to which the data is to be transmitted. The method replicates the data by transmitting the data to the destination slot and to the backup destination slot when the data arrives at an input slot of the crossbar.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: April 5, 2005
    Assignee: Cisco Technology, Inc.
    Inventors: David A. Hughes, Onchuen D. Lau, Frank K. Chui, Quang H. Nguyen