Patents by Inventor Steven R. Yothment

Steven R. Yothment 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).

  • Patent number: 5497187
    Abstract: Data transmission for a cable television system includes transmitting data via a plurality of signals including, but not limited to, in-band audio, in-band video, and out-of-band signals. The in-band data signals are transmitted on scrambled or non-scrambled channels. In-band video data transmission further includes selecting certain lines of the vertical blanking interval for in-band video data transmission, omitting certain equalizing pulses during the selected lines and inserting in-band video data during the selected lines. The several data signals, in-band and out-of-band, have compatible transaction formats to facilitate decoding and data storage processes at a subscriber terminal of the cable television system. A data transmission apparatus includes a data inserter for inserting in-band data in non-scrambled channels, an addressable data transmitter for transmitting out-of-band data and a scrambler for inserting data in scrambled channels.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: March 5, 1996
    Assignee: Scientific-Atlanta, Inc.
    Inventors: Robert O. Banker, Steven R. Yothment