Patents by Inventor Benjamin Franklin Richmond

Benjamin Franklin Richmond 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 correcting noise in a film scanner
    Patent number: 5784529
    Abstract: In a film scanner, noise caused by fluctuations in the intensity of a light source 100 are corrected by taking a sample 175 of the light source and correcting the image read from, or written to, the film with respect to the sample. Preferably, the sample is routed around a film gate 105 and has a similar optical path as the image sample 125. In this way, noise due to variations in the optical path and additional electronics 185 may also be corrected.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 21, 1998
    Assignee: Rank Cintel Limited
    Inventor: Benjamin Franklin Richmond