Patents by Inventor Jean-Pierre Asmus

Jean-Pierre Asmus 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).

  • Video circuit with screen-burn-in protection
    Patent number: 4338623
    Abstract: To prevent display screen burn-in of a picture having, for example, bright lines or other picture components remaining stationary for a long period of time, a video circuit is examined to detect how long the information has not been changed. If a predetermined time limit is exceeded, the picture brightness is limited to a sufficiently low average value or, if so desired, to zero brightness, by means of one or more protection switches.
    Type: Grant
    Filed: April 30, 1980
    Date of Patent: July 6, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Jean-Pierre Asmus, Joseph Soto, Sebastianus J. Op Het Veld, Henri W. Schneider