Patents by Inventor Karoly Lajtai

Karoly Lajtai 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).

  • Method and circuit arrangement for controlling a serial interface circuit
    Patent number: 5168556
    Abstract: A method and circuit for reducing the load of the microprocessor unit of a microprocessor controlled, serial interface circuit. The transmission side of the interface circuit has a first auxiliary stage that, dependent on the presetting by the microprocessor unit generates a control bit stream and transmits a data bit stream from a serial bit stream converter stage. A self-generated data bit stream generates prompter signals for the microprocessor unit and the reception side of the interface circuit has a second auxiliary stage that recognizes message changes over a predetermined time period and generates a prompter signal when the message change occurs.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: December 1, 1992
    Assignee: Siemens Aktiengesellschaft
    Inventors: Karoly Lajtai, Josef Fenzl