Patents by Inventor Mark V. Hettel

Mark V. Hettel 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).

  • Emissive display with luminance feedback from a representative pixel
    Patent number: 6320325
    Abstract: A digital image display device, having a substrate; a light emitting display formed on the substrate, the display having an array of light emitting pixels; a representative light emitting pixel formed on the substrate; a photosensor located on the display device and optically coupled to the representative light emitting pixel; and a feedback control circuit connected to the photosensor for modifying the light emitting display.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: November 20, 2001
    Assignee: Eastman Kodak Company
    Inventors: Ronald S. Cok, Mark V. Hettel
  • Bandwidth reduction in writeable optical data storage apparatus
    Patent number: 5809001
    Abstract: Apparatus for reading data from an optical medium having improved settling time characteristics and reduced bandwidth requirements is disclosed. The apparatus includes a front facet detector for producing a front facet monitor signal from a laser light beam; first and second detectors for producing first and second data signals, respectively; and a first gain control circuit responsive to the front facet monitor signal to produce a gain adjusted front facet monitor signal.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: September 15, 1998
    Assignee: Eastman Kodak Company
    Inventors: Edward C. Gage, Steven C. Dohmeier, Mark V. Hettel
  • Method for bandwidth reduction in writeable optical data storage apparatus
    Patent number: 5805536
    Abstract: A method for reading data from an optical medium having improved settling time characteristics and reduced bandwidth requirements, including producing a gain adjusted front facet monitor signal from a laser light beam, producing first and second data signals from data read from the medium, and producing first and second gain adjusted data signals in response to the gain adjusted front facet monitor signal and first and second data signals, respectively.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: September 8, 1998
    Assignee: Eastman Kodak Company
    Inventors: Edward C. Gage, Steven C. Dohmeier, Mark V. Hettel