Patents by Inventor Lyndon C. Lim

Lyndon C. Lim 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: 8667444
    Abstract: An automated layout method allows designing advanced integrated circuits with design rules of high complexity. In particular, a hierarchical constrained layout process is applicable and useful for analog and mixed-signal integrated circuit designs and may be based on an incremental concurrent placement and routing. Use of constraints from multiple levels of a circuit description hierarchy allows computationally efficient processing of logical circuit increments and produces high-quality outcomes. Users such as circuit designers can exercise a high degree of predictability and control over the resulting physical layout construction by either user-specified or computer-generated constraints.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: March 4, 2014
    Assignee: Synopsys, Inc.
    Inventors: Lindor E. Henrickson, Lyndon C. Lim
  • Publication number: 20130219353
    Abstract: An automated layout method allows designing advanced integrated circuits with design rules of high complexity. In particular, a hierarchical constrained layout process is applicable and useful for analog and mixed-signal integrated circuit designs and may be based on an incremental concurrent placement and routing. Use of constraints from multiple levels of a circuit description hierarchy allows computationally efficient processing of logical circuit increments and produces high-quality outcomes. Users such as circuit designers can exercise a high degree of predictability and control over the resulting physical layout construction by either user-specified or computer-generated constraints.
    Type: Application
    Filed: February 17, 2012
    Publication date: August 22, 2013
    Inventors: Lindor E. Henrickson, Lyndon C. Lim
  • Patent number: 6594813
    Abstract: Disclosed is a semiconductor standard cell architecture with local interconnect. The standard cell architecture includes a semiconductor substrate having diffusion regions that are designated for source and drain regions of a functional circuit. The standard cell also includes a polysilicon layer that is patterned to define gate electrodes and interconnections of the semiconductor standard cell architecture. In addition, the standard cell includes a local interconnect metallization layer that is patterned into a plurality of local interconnect metallization lines that are configured to be disposed over the semiconductor substrate and are further configured to substantially interconnect the source and drain regions and gate electrodes to define the functional circuit. The plurality of local interconnect metallization lines are further designed to incorporate local interconnect metallization pins that are connection points for interconnecting the functional circuit to another functional circuit.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: July 15, 2003
    Assignee: Artisan Components, Inc.
    Inventors: Dhrumil Gandhi, Lyndon C. Lim
  • Patent number: 6448631
    Abstract: Disclosed is a semiconductor standard cell architecture with local interconnect. The standard cell architecture includes a semiconductor substrate having diffusion regions that are designated for source and drain regions of a functional circuit. The standard cell also includes a polysilicon layer that is patterned to define gate electrodes and interconnections of the semiconductor standard cell architecture. In addition, the standard cell includes a local interconnect metallization layer that is patterned into a plurality of local interconnect metallization lines that are configured to be disposed over the semiconductor substrate and are further configured to substantially interconnect the source and drain regions and gate electrodes to define the functional circuit. The plurality of local interconnect metallization lines are further designed to incorporate local interconnect metallization pins that are connection points for interconnecting the functional circuit to another functional circuit.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: September 10, 2002
    Assignee: Artisan Components, Inc.
    Inventors: Dhrumil Gandhi, Lyndon C. Lim
  • Publication number: 20010045571
    Abstract: Disclosed is a semiconductor standard cell architecture with local interconnect. The standard cell architecture includes a semiconductor substrate having diffusion regions that are designated for source and drain regions of a functional circuit. The standard cell also includes a polysilicon layer that is patterned to define gate electrodes and interconnections of the semiconductor standard cell architecture. In addition, the standard cell includes a local interconnect metallization layer that is patterned into a plurality of local interconnect metallization lines that are configured to be disposed over the semiconductor substrate and are further configured to substantially interconnect the source and drain regions and gate electrodes to define the functional circuit. The plurality of local interconnect metallization lines are further designed to incorporate local interconnect metallization pins that are connection points for interconnecting the functional circuit to another functional circuit.
    Type: Application
    Filed: September 23, 1998
    Publication date: November 29, 2001
    Inventors: DHRUMIL GANDHI, LYNDON C. LIM