Patents by Inventor John J. Szarek

John J. Szarek 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).

  • Memory re-mapping in a microcomputer system
    Patent number: 4922451
    Abstract: A microcomputer system has a first, low order address, memory soldered to the planar printed circuit board and can accept further memory pluggable into a socket on the board. At power on self test, the memories are tested, and, if an error is detected in the first memory, this memory is disabled by directing the lowest order memory addresses to the second memory and reducing the highest order addresses by the number of locations in the first memory.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: May 1, 1990
    Assignee: International Business Machines Corporation
    Inventors: Yuan-Chang Lo, Dennis L. Moeller, John J. Szarek