Patents by Inventor Gideon Jacobus K{umlaut over (u)}hn

Gideon Jacobus K{umlaut over (u)}hn 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).

  • Encoder and decoder microchips and remote control devices for secure unidirectional communication
    Patent number: 6175312
    Abstract: Encoder and decoder microchips suitable for use in secure unidirectional remote control devices. The encoder microchip includes circuits for performing and encoding function on an identification number embedded in the microchip and a combination of a characterization number and a stepping counter value, so as to generate a transmission value which is only decidable by a related decoding function having access to the same identification number. The decoder microchip includes circuits for decoding the transmission value into a decoded characterization number and a decoded counter value and circuits for comparing the decoded counter value with a decoded counter value range. The encoder and decoder microchips are also provided with means for synchronizing the decoder microchip with a particular encoder microchip which has generated a synchronization command.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: January 16, 2001
    Assignee: Microchip Technology Incorporated
    Inventors: Frederick Johannes Bruwer, Willem Smit, Gideon Jacobus K{umlaut over (u)}hn