Patents by Inventor John C. Kleitsch

John C. Kleitsch 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).

  • Patent number: 3947639
    Abstract: A method and apparatus for providing improved telephonic conferences is presented. A speaker is selected for each conferee from the signals of the other conferees. The peak values of the speaker signal establish a variable reference level which another conferee must first exceed in order to become the new speaker and establish a new reference level. The reference level is continuously allowed to decay so that new speakers may gain the floor when the current speaker's peak signals fall below the peak signals of another speaker. Both an analog and a digital embodiment of the invention are presented.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: March 30, 1976
    Assignee: Rockwell International Corporation
    Inventors: David C. Nicholas, Willard J. Torgrim, John C. Kleitsch