Patents by Inventor John Robert Hemmings

John Robert Hemmings 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 and apparatus for controlling an acousto-optic modulator
    Patent number: 6693660
    Abstract: A method is provided of modifying pulsed image data signals for controlling an acousto-optic modulator in an image setter system. The method comprises modifying the pulse widths of the image data signals in accordance with predetermined parameters so as to improve the correspondence between the data representing the image and the data recorded on the record medium. Following modification the data signals are supplied to the acousto-optic modulator.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: February 17, 2004
    Assignee: Fujifilm Electronic Imaging Limited
    Inventor: John Robert Hemmings