Patents by Inventor Shahbaz Mahmood

Shahbaz Mahmood 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).

  • Patent number: 10776553
    Abstract: The subject technology provides a method and apparatus for performing dual track routing. A pair of signal traces is routed in between two rows of contacts and at least one of the signal traces is modified to satisfy a routing restriction. The modification of the signal trace includes three trace segments that deviate the signal trace away from the source of the routing restriction.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: September 15, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Lin Shen, Yongming Xiong, Shahbaz Mahmood, Maurilio De Nicolo
  • Patent number: 10325053
    Abstract: A method and apparatus for matching the lengths of traces of differential signal pairs. The method includes determining that a first trace is longer than a second trace and modifying the second trace so that the length is substantially equal to the length of the first trace. In some implementations, the second trace can be modified by replacing one or more sections of the trace with two line segments that are substantially equal in length and meet at a vertex that is less than 180 degrees.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: June 18, 2019
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Lin Shen, Yongming Xiong, Stephen Ong, Shahbaz Mahmood
  • Publication number: 20180293345
    Abstract: The subject technology provides a method and apparatus for performing dual track routing. A pair of signal traces is routed in between two rows of contacts and at least one of the signal traces is modified to satisfy a routing restriction. The modification of the signal trace includes three trace segments that deviate the signal trace away from the source of the routing restriction.
    Type: Application
    Filed: June 11, 2018
    Publication date: October 11, 2018
    Inventors: Lin Shen, Yongming Xiong, Shahbaz Mahmood, Maurilio De Nicolo
  • Patent number: 9996653
    Abstract: The subject technology provides a method and apparatus for performing dual track routing. A pair of signal traces is routed in between two rows of contacts and at least one of the signal traces is modified to satisfy a routing restriction. The modification of the signal trace includes three trace segments that deviate the signal trace away from the source of the routing restriction.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: June 12, 2018
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Lin Shen, Yongming Xiong, Shahbaz Mahmood, Maurilio De Nicolo
  • Publication number: 20170277820
    Abstract: A method and apparatus for matching the lengths of traces of differential signal pairs. The method includes determining that a first trace is longer than a second trace and modifying the second trace so that the length is substantially equal to the length of the first trace. In some implementations, the second trace can be modified by replacing one or more sections of the trace with two line segments that are substantially equal in length and meet at a vertex that is less than 180 degrees.
    Type: Application
    Filed: June 9, 2017
    Publication date: September 28, 2017
    Inventors: Lin Shen, Yongming Xiong, Stephen Ong, Shahbaz Mahmood
  • Patent number: 9690895
    Abstract: A method and apparatus for matching the lengths of traces of differential signal pairs. The method includes determining that a first trace is longer than a second trace and modifying the second trace so that the length is substantially equal to the length of the first trace. In some implementations, the second trace can be modified by replacing one or more sections of the trace with two line segments that are substantially equal in length and meet at a vertex that is less than 180 degrees.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: June 27, 2017
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Lin Shen, Yongming Xiong, Stephen Ong, Shahbaz Mahmood
  • Patent number: 9433081
    Abstract: The subject technology provides configurations for a printed circuit board that includes a first reference plane, a first signal layer below the first reference plane, a second signal layer below the first signal layer, a second reference plane below the second signal layer, a first differential pair on the first signal layer, and a second differential pair on the second signal layer, each of the first and second differential pairs comprising, respectively, a first pair and a second pair of conductive traces formed on a dielectric material of the PCB, the first pair of conductive traces being arranged on the dielectric material to interleave with the second pair of conductive traces.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: August 30, 2016
    Assignee: CISCO TECHNOLOGY, INC
    Inventors: Yongming Xiong, Lin Shen, Shahbaz Mahmood
  • Publication number: 20150370954
    Abstract: A method and apparatus for matching the lengths of traces of differential signal pairs. The method includes determining that a first trace is longer than a second trace and modifying the second trace so that the length is substantially equal to the length of the first trace. In some implementations, the second trace can be modified by replacing one or more sections of the trace with two line segments that are substantially equal in length and meet at a vertex that is less than 180 degrees.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 24, 2015
    Inventors: Lin Shen, Yongming Xiong, Stephen Ong, Shahbaz Mahmood