Patents by Inventor Kenneth J. Henrich

Kenneth J. Henrich 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).

  • Broadcast synchronized communication system
    Patent number: 5289497
    Abstract: A communication system in accordance with the invention employs a broadcast signal for synchronization of the transmitters and receivers in the system without use of a special base transmitter for synchronizing signal transmissions. Each transmitter having a pre-assigned time slot counts from a synchronizing index which is inherent in or added to the broadcast signal to determine when to transmit. The receiver of receivers similarly count from the synchronizing index to determine when to look for specific time slice transmissions.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: February 22, 1994
    Assignee: InterDigital Technology Corporation
    Inventors: Allen G. Jacobson, Donald L. Schilling, Kenneth J. Henrich
  • Differential amplifier having balanced output
    Patent number: 4511852
    Abstract: A classical differential amplifier provides outputs of unequal magnitude due to its emitter resistance being finite. In order to equalize its output, a voltage follower circuit is associated with each of the inputs of the differential amplifier. The output of each voltage follower circuit is converted to a current and subtracted from one of the outputs of the differential amplifier. Subtracting the outputs results in a differential amplifier with both outputs being substantially equal.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: April 16, 1985
    Assignee: Hazeltine Corporation
    Inventors: Kenneth J. Henrich, Thomas C. Hana