Patents by Inventor Jimmy Madewell

Jimmy Madewell 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).

  • Apparatus for controlling access to a memory
    Patent number: 4542454
    Abstract: A computer system having a central processing unit, a dynamic memory controller, an error detection and correction network and a dynamic memory for storing data that are subject to being refreshed and to data bit errors. The dynamic memory controller has a refresh mode for controlling access to the memory only to refresh the data, a refresh with error detection and correction mode, for controlling access to the memory to merge or simultaneous refresh a row of data while detecting and correcting data bit errors, and a read/write mode for controlling access to the memory in response to CPU requests for a read/write memory operation.
    Type: Grant
    Filed: March 30, 1983
    Date of Patent: September 17, 1985
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Joseph A. Brcich, Roy J. Levy, Jimmy Madewell, N. Bruce Threewitt