Method of transmitting teletext pages

Details Method of transmitting teletext pages Method of transmitting teletext pages

1995-06-29

1997-05-06

Peng, John K.

Television

Nonpictorial data packet in television format

Including teletext decoder or display

348461, H04N 7087

Patent

active

056275943

ABSTRACT:
Method, transmitter and receiver for transmitting, receiving and displaying teletext pages. A Level 1 teletext page transmitted in a known manner is extended to a higher display level using extension signals. To activate a desired attribute in an area covering a plurality of rows, the extension signals include a height code which indicates the number of further rows in which the further attributes must be repeated.

REFERENCES:
patent: 4698677 (1987-10-01), Kinghorn et al.
patent: 4910595 (1990-03-01), Bugg et al.
patent: 5221968 (1993-06-01), Bugg
patent: 5294982 (1994-03-01), Salomon et al.
patent: 5355170 (1994-10-01), Eitz et al.
J.P. Chambers, "Potential of extended teletext", Journal of the Royal Television Society, Sep./Oct. 1980, pp. 43-45.
"Teletext Specification", Interim Tehnical Document SPB 492 of the European Broadcasting Union, Dec. 1992.

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