Special services teletext communications system
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United States of America Patent
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-
Jul 12, 1983
Grant Date -
N/A
app pub date -
Feb 26, 1981
filing date -
Feb 26, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A teletext communications system includes a transmitter cyclically transmitting a plurality of conventional teletext encoded data rows together with one or more teletext encoded special services data rows. A plurality of teletext decoder equipped receivers are operable for acquiring the conventional teletext rows but not the special services rows. Subscribers to the special services data are provided with data decoders responsive to the cyclical transmissions for acquiring only the special services data rows, the data decoders including apparatus for storing the data encoded in an acquired special services data row and for providing a display of the information represented thereby.
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