Patents by Inventor Shelton Siuwah Leung

Shelton Siuwah Leung 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: 7679973
    Abstract: A register file is often used within integrated circuitry to temporarily hold data. Sometimes this data needs to be retained within the register file for a period of time, such as when there is a stall operation. Conventional register files have utilized a hold multiplexor to perform such a stall operation. The multiplexor however inserts a delay that is undesirable in high performance integrated circuitry. The multiplexor is replaced with a tri-state inverter coupled to the global bit line of the register file, which minimizes this additional delay from the register file data access time.
    Type: Grant
    Filed: July 26, 2008
    Date of Patent: March 16, 2010
    Assignee: International Business Machines Corporation
    Inventors: Sam Gat-Shang Chu, Saiful Islam, Shelton Siuwah Leung, Jose Angel Paredes
  • Publication number: 20080279015
    Abstract: A register file is often used within integrated circuitry to temporarily hold data. Sometimes this data needs to be retained within the register file for a period of time, such as when there is a stall operation. Conventional register files have utilized a hold multiplexor to perform such a stall operation. The multiplexor however inserts a delay that is undesirable in high performance integrated circuitry. The multiplexor is replaced with a tri-state inverter coupled to the global bit line of the register file, which minimizes this additional delay from the register file data access time.
    Type: Application
    Filed: July 26, 2008
    Publication date: November 13, 2008
    Applicant: International Business Machines Corporation
    Inventors: Sam Gat-Shang Chu, Saiful Islam, Shelton Siuwah Leung, Jose Angel Paredes
  • Patent number: 7443737
    Abstract: A register file is often used within integrated circuitry to temporarily hold data. Sometimes this data needs to be retained within the register file for a period of time, such as when there is a stall operation. Conventional register files have utilized a hold multiplexor to perform such a stall operation. The multiplexor however inserts a delay that is undesirable in high performance integrated circuitry. The multiplexor is replaced with a tri-state inverter coupled to the global bit line of the register file, which minimizes this additional delay from the register file data access time.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: October 28, 2008
    Assignee: International Business Machines Corporation
    Inventors: Sam Gat-Shang Chu, Saiful Islam, Shelton Siuwah Leung, Jose Angel Paredes