Patents by Inventor Roger J. Edwards

Roger J. Edwards 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: 5307485
    Abstract: A system and method for merging a plurality of sorted lists using multiple processors having access to a common memory in which N sorted lists which may exceed the capacity of the common memory are merged in a parallel environment. Sorted lists from a storage device are loaded into common memory and are divided into a number of tasks equal to the number of available processors. The records assigned to each task are separately sorted, and used to form a single sorted list. A multi-processing environment takes advantage of its organization during the creation of the tasks, as well as during the actual sorting of the tasks.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: April 26, 1994
    Assignee: International Business Machines Corporation
    Inventors: Frank G. Bordonaro, Glen A. Brent, Roger J. Edwards, Joel Goldman, David B. Lindquist, Kushal A. Patel, Peyton R. Williams, Jr.
  • Patent number: 4566005
    Abstract: A display management system for one or more large plasma gas panel displays (11) is organized to split the display management operations between a host processor (20), a system microprocessor (21) and a picoprocessor (27). The picoprocessor (27) is the heart of a common internal bus (31) plasma display adapter (22). The program for the display is downloaded from the host processor (20) to the system microprocessor (21). The microprocessor generates op codes and initializes display parameters. The plasma display adapter provides control for the plasma panel interface, serialization of character generator data, translates display position addresses for absolute cartesian coordinates to panel address, and computes the boundaries of display panel write and erase operations. Interaction between the system microprocessor and the plasma display adapter is minimized by a code list contained in the microprocessor memory and fetched by direct memory access.
    Type: Grant
    Filed: March 7, 1983
    Date of Patent: January 21, 1986
    Assignee: International Business Machines Corporation
    Inventors: Norman Apperley, Roger J. Edwards, Raymond L. J. Foster, David C. Haigh, Michael Haslam, Peter Verey