Patents by Inventor Michael A. Duguay

Michael A. Duguay 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).

  • Optical disc read/write apparatus
    Patent number: 4550249
    Abstract: A read/write system which reduces access time in optical disc apparatus is disclosed. The head includes an array of lenses which covers a substantial portion of the radius of the disc. Access of a particular disc track is achieved by deflection of the reading beam, rather than by any physical movement of the head. For read-out, the array focuses light reflected from the disc onto a corresponding array of photodetectors.
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: October 29, 1985
    Assignee: AT&T Bell Laboratories
    Inventors: Theodoor C. Damen, Michael A. Duguay, Richard E. Howard, Lawrence D. Jackel, William J. Skocpol