Patents by Inventor David Troy Roberts

David Troy Roberts 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).

  • Scanner with an adjustable light source for scanning opaque and transparent media
    Patent number: 7907311
    Abstract: A scanner has a movable carriage, a platen that is substantially transparent to visible light overlying the carriage, and a light source physically connected to the carriage for moving therewith. The light source is selectively movable between a first position for scanning substantially opaque media positioned on the platen, and overlying the light source, and a second position for scanning media substantially transparent to visible light underlying the light source.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: March 15, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David Troy Roberts, Michael A. Tregoning, Meing Fai Nigel Cheung, Edward G. Trick
  • Artifact scanning with infrared radiation generated within a cold cathode lamp
    Patent number: 7872781
    Abstract: Visible and infrared radiation is generated from phosphors within a cold cathode lamp. At least partially transparent media is irradiated with the visible and infrared radiation from the cold cathode lamp. Infrared radiation that passes through the at least partially transparent media is sensed, and an artifact signal is generated from the sensed infrared radiation. The artifact signal corresponds to one or more unwanted artifacts on the at least partially transparent media.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: January 18, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: David Troy Roberts
  • Artifact scanning with infrared radiation generated within a cold cathode lamp
    Publication number: 20080224043
    Abstract: Visible and infrared radiation is generated from phosphors within a cold cathode lamp. At least partially transparent media is irradiated with the visible and infrared radiation from the cold cathode lamp. Infrared radiation that passes through the at least partially transparent media is sensed, and an artifact signal is generated from the sensed infrared radiation. The artifact signal corresponds to one or more unwanted artifacts on the at least partially transparent media.
    Type: Application
    Filed: March 16, 2007
    Publication date: September 18, 2008
    Inventor: David Troy Roberts
  • Contact-image-sensor scanner configurable for scanning opaque and transparent media
    Publication number: 20080225350
    Abstract: A scanner has a movable carriage, a contact image sensor located on the carriage, and a platen that is substantially transparent to visible light overlying the carriage and the contact image sensor. The scanner is selectively configurable between a first scanning mode for scanning substantially opaque media positioned on the platen and a second scanning mode for scanning media substantially transparent to visible light underlying the platen. At least one image on the substantially opaque media is located within a depth of field of the contact image sensor when the substantially opaque media is positioned on the platen. At least one image on the media substantially transparent to visible light is located within the depth of field of the contact image sensor when the media substantially transparent to visible light underlies the platen.
    Type: Application
    Filed: March 13, 2007
    Publication date: September 18, 2008
    Inventor: David Troy Roberts
  • Scanner with an adjustable light source for scanning opaque and transparent media
    Publication number: 20080192307
    Abstract: A scanner has a movable carriage, a platen that is substantially transparent to visible light overlying the carriage, and a light source physically connected to the carriage for moving therewith. The light source is selectively movable between a first position for scanning substantially opaque media positioned on the platen, and overlying the light source, and a second position for scanning media substantially transparent to visible light underlying the light source.
    Type: Application
    Filed: February 13, 2007
    Publication date: August 14, 2008
    Inventors: David Troy Roberts, Michael A. Tregoning, Meing Fai Nigel Cheung, Edward G. Trick