Patents by Inventor Marc L. Cresens

Marc L. Cresens 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).

  • Scanning system
    Patent number: 5751447
    Abstract: A scanning apparatus providing separate fixed focal planes for transmissive and reflective original documents to be scanned, wherein a scan carriage containing illumination, sensor, and optical elements is moved together to scan an original document and to obtain a digitized representation thereof. The movable scan carriage has an illumination source disposed between the reflective and transmissive object focal planes, with the object focal plane to be used selected by changing the position of one or more optical elements within the scan carriage. The resolution of the digitized representation of the scanned original document can be determined by rotation of at least one lens about an axis substantially perpendicular to its optic axis.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: May 12, 1998
    Assignee: Agfa Division, Bayer Corporation
    Inventors: Mark G. Brook, Mark E. Tellam, John F. Omvik, Marc L. Cresens, Christopher R. Duval, David M. Leclerc
  • Illumination system for a flat-bed scanning system
    Patent number: 5696609
    Abstract: A scanning apparatus providing separate fixed object focal planes for transmissive and reflective original documents to be scanned, wherein a scan carriage containing illumination, sensor, and optical elements is moved together to scan an original document and to obtain a digitized representation thereof. The movable scan carriage has an illumination source disposed between the reflective and transmissive object focal planes, with the object focal plane to be used selected by changing the position of one or more optical elements within the scan carriage. The illumination source comprises a removable lamp cartridge with one or more lamps disposed for correct illumination of the selected object focal plane.
    Type: Grant
    Filed: June 29, 1995
    Date of Patent: December 9, 1997
    Assignee: Agfa Division, Bayer Corporation
    Inventors: Marc L. Cresens, John F. Omvik, Mark G. Brook, Kevin J. Haded, Mark E. Tellam
  • Method and apparatus for synchronizing the polarization control signal of an AC-polarized arc-discharge lamp with the exposure timing signals of a CCD line sensor
    Patent number: 5495361
    Abstract: A method and apparatus for synchronizing the line time and color channel exposure timing signals of a CCD line sensor with the polarization control signal of an AC-polarized arc-discharge lamp in a scanning system. The scanning system comprises a scanner illumination system, including an AC-polarized arc-discharge lamp, for illuminating a document to be scanned, and a scanner imaging system for scanning the illuminated document in a line-wise manner. The scanning system of the present invention is designed to minimize brightness fluctuations on the document being scanned, improving the quality of the scanned image.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: February 27, 1996
    Assignee: Agfa Division, Bayer Corporation
    Inventor: Marc L. Cresens