Patents by Inventor James Gary Norman

James Gary Norman 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 defining the initial state of static random access memory
    Patent number: 6906962
    Abstract: A method for predetermining the initial state of the memory cells of a static random access memory such that when the memory is powered up the predetermined initial states are attained. The initial states can be predetermined by modifying one or more physical or operational parameters of the MOSFETS comprising the memory cells.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: June 14, 2005
    Assignee: Agere Systems Inc.
    Inventors: Paul Arthur Layman, Samir Chaudhry, James Gary Norman, J. Ross Thomson
  • Apparatus and method for detecting alpha particles
    Patent number: 6828561
    Abstract: A memory array operates as an alpha particle detector. A predetermined state is stored in each memory storage location. The operating voltage of the memory array is established at a voltage where the stored values are relatively stable and not subject to change except as a result of alpha particle impingement. Impinging alpha particles are detected by the state changes they cause in the memory storage locations.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: December 7, 2004
    Assignee: Agere Systems Inc.
    Inventors: Paul Arthur Layman, Samir Chaudhry, James Gary Norman, J. Ross Thomson
  • Electronic fingerprinting of semiconductor integrated circuits
    Patent number: 6738294
    Abstract: A method of identifying an integrated circuit device based on the initial state of certain memory cells within a memory array of the integrated circuit device. For many cells in the memory array the initial state is relatively consistent at each power-up, due to mismatches between the transistors that form each memory cell. Thus these consistent initial states provide a signature of the memory array and the integrated circuit device.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: May 18, 2004
    Assignee: Agere Systems Inc.
    Inventors: Paul Arthur Layman, Samir Chaudhry, James Gary Norman, J. Ross Thomson
  • Method for defining the initial state of static random access memory
    Publication number: 20040062083
    Abstract: A method for predetermining the initial state of the memory cells of a static random access memory such that when the memory is powered up the predetermined initial states are attained. The initial states can be predetermined by modifying one or more physical or operational parameters of the MOSFETS comprising the memory cells.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 1, 2004
    Inventors: Paul Arthur Layman, Samir Chaudhry, James Gary Norman, J. Ross Thomson
  • ELECTRONIC FINGERPRINTING OF SEMICONDUCTOR INTEGRATED CIRCUITS
    Publication number: 20040062084
    Abstract: A method of identifying an integrated circuit device based on the initial state of certain memory cells within a memory array of the integrated circuit device. For many cells in the memory array the initial state is relatively consistent at each power-up, due to mismatches between the transistors that form each memory cell. Thus these consistent initial states provide a signature of the memory array and the integrated circuit device.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 1, 2004
    Inventors: Paul Arthur Layman, Samir Chaudhry, James Gary Norman, J. Ross Thomson
  • Apparatus and method for detecting alpha particles
    Publication number: 20040061060
    Abstract: A memory array operates as an alpha particle detector. A predetermined state is stored in each memory storage location. The operating voltage of the memory array is established at a voltage where the stored values are relatively stable and not subject to change except as a result of alpha particle impingement. Impinging alpha particles are detected by the state changes they cause in the memory storage locations.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 1, 2004
    Inventors: Paul Arthur Layman, Samir Chaudhry, James Gary Norman, J. Ross Thomson