Patents by Inventor Philip J. Rice

Philip J. Rice 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).

  • Contacting pickup optical reproduction system
    Patent number: 3980811
    Abstract: A contacting pickup optical waveguide reproduction system and method for reproducing information carried on a recording medium. The recording medium is of the type having optically reflective pits formed in an information path. Information is stored as a function of pit modulation. The system includes an optical pickup adapted to slidably contact an information path along a recording medium and means for illuminating the pits. Optical waveguide means is provided for receiving illumination reflected by said pits and an optical-to-electrical energy transducer is coupled to said optical waveguide means. A particular embodiment includes a remote optical-to-electrical energy transducer.
    Type: Grant
    Filed: September 3, 1974
    Date of Patent: September 14, 1976
    Assignees: Nihon Denshi Kabushiki Kaisha, Sharp Kabushiki Kaisha
    Inventors: Louis F. Schaefer, Philip J. Rice, Hugh F. Frohbach