Patents by Inventor Thomas R. Ermolovich

Thomas R. Ermolovich 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).

  • Communications device for data processing system
    Patent number: 4527236
    Abstract: A communications device for transferring process data between a data processing system and an external device at high speed. The communications device receives command signals from a user process program in the data processing system and from the external device. The communications device generates physical addresses in the data processing system with respect to which process data is to be transferred, the physical addresses being generated in response to virtual addresses supplied in the commands. The communications device and the external device also each include means for signalling the other that data is being transferred at too rapid a rate to be processed, or that data is temporarily not being transferred, to prevent data being lost and an error being sent to the data processing system.
    Type: Grant
    Filed: April 28, 1982
    Date of Patent: July 2, 1985
    Assignee: Digital Equipment Corporation
    Inventor: Thomas R. Ermolovich
  • Communications device for data processing system
    Patent number: 4319323
    Abstract: A communications device transfers process data between a data processing system and an external device at high speed. The communications device receives command signals from a user process program in the data processing system and from the external device. The communications device generates physical addresses in the data processing system with respect to which process data is to be transferred, the physical addresses being generated in response to virtual addresses supplied in the commands. The communications device and the external device also each include apparatus for signalling the other that data is being transferred at too rapid a rate to be processed, or that data is temporarily not being transferred, to prevent data being lost and an error being sent to the data processing system.
    Type: Grant
    Filed: April 4, 1980
    Date of Patent: March 9, 1982
    Assignee: Digital Equipment Corporation
    Inventors: Thomas R. Ermolovich, Robert E. Stewart, Judson S. Leonard, David N. Cutler