Patents by Inventor Robert E. Scriver

Robert E. Scriver 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: 4173783
    Abstract: In a data processing system employing paging and segmentation for storing information in memory, the input-output unit is provided with addressing capability for addressing and accessing memory without the intervention of the central processing unit to convert virtual addresses to absolute addresses. Paged tables are set up in memory by the central processing unit prior to input-output operations containing page table words, and a page table is assigned to each peripheral. A peripheral control word assigned to each peripheral includes a pointer to the start of the peripheral's page table whereby the peripheral through the I/O unit and without central processing intervention can locate its assigned page table, and page table words therein are used independent of any central processor virtual to absolute address conversion to access paged memory locations.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: November 6, 1979
    Assignee: Honeywell Information Systems, Inc.
    Inventors: John F. Couleur, Robert E. Scriver
  • Patent number: 4151510
    Abstract: In an information handling system in which a cyclic code is utilized to both detect and correct errors and a cyclical redundancy code is used for supplementary detection of errors, the cyclical redundancy code (CRC) polynomial is chosen to be a factor of the generator polynomial, g(x), of the error detection and correction (EDAC) code. In this way, the same check bits in the code word used for error detection and correction may be further utilized for a CRC check to supplement the error detection capabilities of the system. The risk of miscorrection of data is reduced to de minimus levels by the partitioning of data and count fields in the course of the development of the error detection and correction codes. Practice of the teachings herein disclosed provides a more efficient error detection and correction system with greatly reduced risk of miscorrection. An embodiment of the invention is disclosed following the methodology taught herein.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: April 24, 1979
    Assignee: Honeywell Information Systems
    Inventors: Thomas H. Howell, Robert E. Scriver, Joseph C. Circello