Television – Special applications – Manufacturing
Patent
1994-12-22
1996-03-05
Kostak, Victor R.
Television
Special applications
Manufacturing
348478, H04N 710, H04N 7087, H04N 7025, H04N 706
Patent
active
054971870
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.
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47 C.F.R. .sctn. 73.699 (FCC, Oct. 1, 1991 ed.).
Banker Robert O.
Yothment Steven R.
Kostak Victor R.
Metjahic Safet
Scientific-Atlanta, Inc.
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