Patents by Inventor Steven R. Kordus

Steven R. Kordus 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).

  • Hardware implementation of string instructions
    Patent number: 5619715
    Abstract: A data processor processes data strings from memory where the data strings do not begin or end at a memory boundary. A string is defined in memory by a starting address, a byte count defining the total number of bytes in the string, and a byte offset defining the position of the first byte in the starting address location. The processor stores the byte count and decrements the byte count as each multi-byte word is processed. A byte count mask circuit generates a byte count mask which has all 1s for each byte count greater than the number of bytes per memory word. When the number of bytes remaining to be processed is below the number of bytes in a memory word, the byte count mask generates 1s only for the positions corresponding to the positions of bytes of the string in the last memory word. An offset register stores the offset defining the position of the first byte in the first memory word of the string.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: April 8, 1997
    Assignee: International Business Machines Corporation
    Inventors: Robert M. Dinkjian, Lisa C. Heller, Steven R. Kordus, Kenneth A. Lauricella, Thomas W. Seigendall, Robert A. Skaggs, Nelson S. Xu
  • Method of processing data strings
    Patent number: 5608887
    Abstract: A data processor processes data strings from memory where the data strings do not begin or end at a memory boundary. A string is defined in memory by a starting address, a byte count defining the total number of bytes in the string, and a byte offset defining the position of the first byte in the starting address location. The processor stores the byte count and decrements the byte count as each multi-byte word is processed. A byte count mask circuit generates a byte count mask which has all 1s for each byte count greater than the number of bytes per memory word. When the number of bytes remaining to be processed is below the number of bytes in a memory word, the byte count mask generates 1s only for the positions corresponding to the positions of bytes of the string in the last memory word. An offset register stores the offset defining the position of the first byte in the first memory word of the string.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: March 4, 1997
    Assignee: International Business Machines Corporation
    Inventors: Robert M. Dinkjian, Lisa C. Heller, Steven R. Kordus, Kenneth A. Lauricella, Thomas W. Seigendall, Robert A. Skaggs, Nelson S. Xu
  • Processor for processing data string by byte-by-byte
    Patent number: 5465374
    Abstract: A data processor processes data strings from memory where the data strings do not begin or end at a memory boundary. A string is defined in memory by a starting address, a byte count defining the total number of bytes in the string, and a byte offset defining the position of the first byte in the starting address location. The processor stores the byte count and decrements the byte count as each multi-byte word is processed. A byte count mask circuit generates a byte count mask which has all 1s for each byte count greater than the number of bytes per memory word. When the number of bytes remaining to be processed is below the number of bytes in a memory word, the byte count mask generates 1s only for the positions corresponding to the positions of bytes of the string in the last memory word. An offset register stores the offset defining the position of the first byte in the first memory word of the string.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: November 7, 1995
    Assignee: International Business Machines Corporation
    Inventors: Robert M. Dinkjian, Lisa C. Heller, Steven R. Kordus, Kenneth A. Lauricella, Thomas W. Seigendall, Robert A. Skaggs, Nelson S. Xu