Patents by Inventor Jurgen Rivoir

Jurgen Rivoir 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).

  • Circuit arrangement for indicating ambient light conditions of a video pickup and video display device
    Patent number: 5734439
    Abstract: Users of video telephones or multimedia terminals cannot determine whether ambient light conditions during a transmission to another terminal are always of good quality. Provision is made for an indication regarding the ambient light conditions during a telephone call, and control thereof. By means of a circuit arrangement including a photocell (F) to detect incident light, a signal (II) is formed, which corresponds to the ambient light conditions. The signal (II) is displayed together with a video signal (I), or is used for control purposes.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: March 31, 1998
    Assignee: Alcatel N.V.
    Inventors: Peter Wirbitzki, Werner Willhaus, Jurgen Rivoir