Patents by Inventor Fred W. Grab

Fred W. Grab 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).

  • Patent number: 4373156
    Abstract: A system and method for producing rapid, high resolution hard color copies from computer-based graphics and image processing including a computer-controlled color video signal graphics system for producing electronically generated digital character and/or graphics data in response to programmed commands that are input to the graphics system. Thereafter, the graphics system transforms the digital data into blue, green and red color video signals which are input to a color camera system through a color control panel that is controlled by a microprocessor. The color control panel sequentially switches each of the red, blue and green video signals through to a video monitor where the signals are transformed into video images on a screen of the monitor. The video images appearing on the screen of the monitor are filtered by a color filter wheel which is also controlled by the microprocessor of the camera system. One of two types of film may be selected for exposure to the filtered video images.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: February 8, 1983
    Assignee: Bell & Howell Company
    Inventors: Robert B. Pfannkuch, Fred W. Grab