Patents by Inventor Charles H. G. ab der Halden

Charles H. G. ab der Halden 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 for processing digital signals, and subscriber station for telecommunication and teledistribution
    Patent number: 4580291
    Abstract: A subscriber station receives and transmits, through two optical fibers, composite signals representative of various services as television signals, videophone signals, hifi sound signals, telephone signals, etc. The station controls exchanges between a switching center and terminals, and separates some signals from composite signals to process specific signals.
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: April 1, 1986
    Assignee: Societe Anonyme de Telecommunications
    Inventor: Charles H. G. ab der Halden