Patents by Inventor Stefan Sigrist

Stefan Sigrist 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).

  • Transmission method and apparatus for an infrared remote control system
    Patent number: 5574585
    Abstract: For the transmission of signals triggered by long key depressions from a transmitter to a receiver, repeat signals (R) are transmitted while the key is held down. Releasing the key triggers a separate shift signal (S).A burst-pause modulation method is used to transmit the repeat and shift signals (R) and (S).Information units are defined here by different lengths of the burst intervals. The burst intervals and the burst packets are selected in such a way that infrared transmitters with a limited power supply can be used.
    Type: Grant
    Filed: June 28, 1995
    Date of Patent: November 12, 1996
    Assignee: Feller AG
    Inventors: Markus Thaler, Urs Jost, Stefan Sigrist, Peter Schmid