Patents by Inventor David J. Hedwall

David J. Hedwall 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).

  • Apparatus and method for adjusting video characteristics of a CRT screen
    Patent number: 5896168
    Abstract: An apparatus and method for adjusting video characteristics of a CRT screen having a plurality of adjustment mechanisms for adjusting visual characteristics of the CRT screen. Further included is a video playback mechanism adapted to display a screen format on the CRT video screen upon the actuation thereof. The screen format comprises a plurality of areas of various colors. A viewing mechanism is included to allow viewing of the screen format of the CRT screen therethrough. Upon viewing the screen format of the CRT screen through the viewing mechanism, a user may manipulate the adjustment mechanisms for properly adjusting the visual characteristics of the CRT screen.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: April 20, 1999
    Inventor: David J. Hedwall