Patents by Inventor Hermanus Antonius Kappert

Hermanus Antonius Kappert 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).

  • Apparatus for reading a disk-shaped record carrier with track jumping for charging motion effects
    Patent number: 4057832
    Abstract: An apparatus for optically reading a record carrier on which information is contained in tangentially extending tracks includes a directing system for making the scanning spot cooperate with the desired track. In order to enable a jump-wise displacement of the scanning spot from a track being followed to an adjacent track, a switching device is provided for supplying a suitable control signal to the directing system. The control signal is automatically adapted to varying track distances, so that a correct jump-wise displacement of the scanning spot is guaranteed.
    Type: Grant
    Filed: November 4, 1975
    Date of Patent: November 8, 1977
    Assignee: U.S. Philips Corporation
    Inventor: Hermanus Antonius Kappert