Patents by Inventor Michael J. Heffler

Michael J. Heffler 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).

  • Data representation protocol for communications between different networks
    Patent number: 5175817
    Abstract: A data representation and protocol are provided to interface two networks. A plurality of information units to be transmitted from one network to another are formatted into a variable size block in accordance with the protocol. Each block contains a header field storing a total information unit count and a control information unit count. The remainder of the block stores the actual information itself, both control and data, in consecutive byte locations, with the actual control information located at the end of the block. The block can then be sent to another network for processing. A device in the other network need only reference the block header to determine whether the information contained in the block is control or data. This speeds the processing of large quantities of either all data information and/or control information.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: December 29, 1992
    Assignee: Digital Equipment Corporation
    Inventors: Samuel T. Adams, Mahendra J. Kaycee, Michael J. Heffler
  • On-line documentation facility
    Patent number: 4800485
    Abstract: Users of an on-line documentation facility in a computer system are provided with the capability of specifying modifications to be made to the documentation that would otherwise be provided by the system.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: January 24, 1989
    Assignees: American Telephone and Telegraph Company, Bell Telephone Laboratories, Incorporated
    Inventors: John M. Ackroff, Michael J. Heffler, John C. Mitchell