Patents by Inventor Duane O. Hague, Jr.

Duane O. Hague, Jr. 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: 3979774
    Abstract: Disclosed is a digital control system and method for synchronizing audio-visual equipment for the presentation of film slides with corresponding sound narrations. As the film passes through conventional projecting equipment each slide receives a sequential address. Simultaneously, the sound narrations, passing through the audio equipment on a continuous media, receive identification numbers from a pulse generating means indicative of the outset of each narration, which numbers are stored in the system correlated with the proper sequential address. Means are further provided for skipping ahead or back to desired film slides rapidly, without loss of synchronization between the audio and visual portions of the program.
    Type: Grant
    Filed: March 13, 1974
    Date of Patent: September 7, 1976
    Assignee: The University of Akron
    Inventors: Chun-Fu Chen, Duane O. Hague, Jr.