Method and device for transmitting and receiving teletext data

Details Method and device for transmitting and receiving teletext data Method and device for transmitting and receiving teletext data

1996-09-24

1999-05-18

Flynn, Nathan

Television

Nonpictorial data packet in television format

Including teletext decoder or display

348467, 348563, H04N7/00;11/00;5/446

Patent

active

059055375

ABSTRACT:
By encoding references to teletext pages as an offset to a referenced teletext page, significant gains in transmission efficiency can be realized. The current teletext standard provides a mechanism for linking teletext pages, but the maximum number of different links supported by the teletext standard is insufficient to cover the need for more links for novel media services such as the transmission of Electronic Program Guides (EPG). An efficient extension of the number of links which can be supported is provided by coding further links as an offset with respect to the existing links in a conventional teletext link packet.

REFERENCES:
patent: 4679082 (1987-07-01), Shibasaki
patent: 4829569 (1989-05-01), Seth-Smith et al.
patent: 4953022 (1990-08-01), Bugg
patent: 5038212 (1991-08-01), Van Den Hombergh et al.
patent: 5355170 (1994-10-01), Eitz et al.
patent: 5410359 (1995-04-01), Odijk et al.
World System Teletext, Technical Specification, revised Mar. 1985.

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