Patents by Inventor Bruno Blondet

Bruno Blondet 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).

  • An optical information recording system in which the energy when transmitted to the recording layer is constant
    Patent number: 4051329
    Abstract: The invention relates to a system optically recording information, by the insolation of a photosensitive layer deposited on a substrate, on a track of substantially constant width. The system comprises a device for controlling the energy emitted by the source in response to the non-uniformity of the reflexion coefficient of said surface, said control device being such that the energy actually transmitted to the photosensitive layer is constant when the modulation signal has the value 1.
    Type: Grant
    Filed: March 16, 1976
    Date of Patent: September 27, 1977
    Assignee: Thomson-Brandt
    Inventors: Bruno Blondet, Sylvain Kretschmer, Jean Pierre Lacotte, Jean Paul Peltier