Patents by Inventor Sam Goldwater

Sam Goldwater 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).

  • Addressable premium channel obfuscation device for cable television systems
    Patent number: 4434436
    Abstract: An obfuscation device for use in cable television systems includes a memory for storing a plurality of channel status bits. The state of each channel status bit corresponds to the authorization or non-authorization of a particular channel. The obfuscation device includes a circuit for selecting a number representing a frequency and a circuit for generating an obfuscation signal that randomly varies about the selected frequency. The obfuscation device uses the selected number to address a location of the memory to fetch the channel status bits corresponding to the respective residences for the channel in which the selected obfuscation frequency lies.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: February 28, 1984
    Assignee: Bruce Merrill
    Inventors: Gayheart C. Kleykamp, Sam Goldwater, Charles L. Salsbery