Patents by Inventor Clay S. Johnson

Clay S. Johnson 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 of using partially defective programmable logic devices
    Patent number: 6664808
    Abstract: FPGAs that contain at least one localized defect may be used to implement some designs if the localized defect is not used in the designs. To determine if the FPGA is suitable to implement a design, the design is loaded into the FPGA. The FPGA is tested to determine whether it can execute the design accurately even with the localized defect. The FPGA will be marked as suitable for that design if it passes the test. If the FPGA is found to be unsuitable for one design, additional designs may be tested. Thus, a FPGA manufacturer can sell FPGAs that are normally discarded. As a result, the price of these FPGAs could be set significantly low.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: December 16, 2003
    Assignee: Xilinx, Inc.
    Inventors: Zhi-Min Ling, Jae Cho, Robert W. Wells, Clay S. Johnson, Shelly G. Davis
  • Method of using partially defective programmable logic devices
    Publication number: 20030062923
    Abstract: FPGAs that contain at least one localized defect may be used to implement some designs if the localized defect is not used in the designs. To determine if the FPGA is suitable to implement a design, the design is loaded into the FPGA. The FPGA is tested to determine whether it can execute the design accurately even with the localized defect. The FPGA will be marked as suitable for that design if it passes the test. If the FPGA is found to be unsuitable for one design, additional designs may be tested. Thus, a FPGA manufacturer can sell FPGAs that are normally discarded. As a result, the price of these FPGAs could be set significantly low.
    Type: Application
    Filed: August 7, 2001
    Publication date: April 3, 2003
    Applicant: Xilinx, Inc.
    Inventors: Zhi-Min Ling, Jae Cho, Robert W. Wells, Clay S. Johnson, Shelly G. Davis