Patents by Inventor Angelo D. Kachemov

Angelo D. Kachemov 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).

  • Communication multiplexer having an apparatus for establishing a single line priority
    Patent number: 4405981
    Abstract: A data processing system includes a number of input/output devices coupled to a communication multiplexer by 1 synchronous communication line and a number of asynchronous communication lines. During the polling operation, receive communication lines have high priority and transmit communication lines have low priority. Apparatus in the polling logic gives the synchronous communication line in the receive mode first priority and the synchronous communication line in the transmit mode second priority.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: September 20, 1983
    Assignee: Honeywell Information Systems Inc.
    Inventors: Kin C. Yu, Angelo D. Kachemov
  • Communication multiplexer having a variable priority scheme using a read only memory
    Patent number: 4385382
    Abstract: A data processing system includes a number of input/output devices coupled to a communication multiplexer which polls the devices in a predetermined order. Apparatus in the communication controller rearranges the polling order to provide highest priority to an input/output device in a receive mode that is currently operative and to give lowest priority to an input/output device in a transmit mode that has just completed its operation.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: May 24, 1983
    Assignee: Honeywell Information Systems Inc.
    Inventors: Gary J. Goss, Angelo D. Kachemov