Patents by Inventor Leonardus G. H. Bovee

Leonardus G. H. Bovee 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: 4236232
    Abstract: An optical read apparatus for reading a disc-shaped record carrier. A read element is mounted on an adjusting member by means of which the read element is radially movable. Moreover, there is provided a deflection element for correcting the radial position of the scanning spot. In order to enable an arbitrary information unit on the record carrier to be read with a short searching time, the drive of both the adjusting member and the deflection element is controlled. In order to enable the adjusting member to be moved in a rapid and controlled manner there is provided a position indicator, which indicates the instantaneous radial position of the read element. Moreover, there is included a correction circuit which eliminates the adverse effect of inaccuracies in the position indicator on the searching time.
    Type: Grant
    Filed: January 31, 1979
    Date of Patent: November 25, 1980
    Assignee: U.S. Philips Corporation
    Inventors: Gerardus L. M. Jansen, Leonardus G. H. Bovee