Patents by Inventor Bruce D. Radke

Bruce D. Radke 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).

  • Method of printing on a transparency sheet
    Patent number: 5422659
    Abstract: A printer having a paper printing mode and a transparency printing mode detects a leading edge portion of an image-receiving sheet. Based on detection of an opaque leading edge portion of a transparent sheet, the paper printing mode is disabled and a sheet size having boundaries is selected. The printer deposits ink on the transparent sheet within the boundaries of the selected sheet size.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: June 6, 1995
    Assignee: Tektronix, Inc.
    Inventors: Donald R. Titterington, Bruce D. Radke, James D. Rise
  • Encoder duty-cycle error correction
    Patent number: 5170416
    Abstract: The present invention (50) corrects duty-cycle errors generated by imperfections in encoder scales and encoder detectors. A preferred embodiment of the invention operates by detecting successive transparent-to-opaque transitions of the encoder scale (20), calculating the distance between the transitions, dividing that distance by two, and generating a synthetic encoder pluse that is timed to represent a position 50 percent of the distance between the transparent-to-opaque transitions.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: December 8, 1992
    Assignee: Tektronix, Inc.
    Inventors: Howard V. Goetz, Bruce D. Radke