Television – Nonpictorial data packet in television format – Including teletext decoder or display
Patent
1997-11-14
1999-06-08
Kostak, Victor R.
Television
Nonpictorial data packet in television format
Including teletext decoder or display
348465, H04N 7087
Patent
active
059108215
ABSTRACT:
For the transmission of additional data on a television channel the lines of the vertical blanking interval are used. It is intented to improve program information by so-called electronic program guides, which are based on the transmission of a large database. For these EPGs the additional data shall be broadcasted within the teletext data stream in a compatible manner. The EPG data are splitted into two data streams, wherein the transmitted data are organized in data blocks. Data blocks from different streams may interrupt each other. According to the invention the data pages (A, B) are stored sequentially in two different buffers (PA, PB) and processed alternatively. The blocks of the pages transmitted in the first stream are stored in a first block buffer (BB1) and the blocks of the pages transmitted in the second stream are stored in a second block buffer (BB2).
REFERENCES:
patent: 5650826 (1997-07-01), Eitz
patent: 5654763 (1997-08-01), Bruckner et al.
patent: 5742352 (1998-04-01), Tsukagoshi
Benoit, H., "Un Decodeur De Teletexte WST", Electronic Radio Plans, No. 521 Apr., 1991, pp. 53-59.
Deutsche Thomson-Brandt GmbH
Henig Sammy S.
Kostak Victor R.
Laks Joseph J.
Tripoli Joseph S.
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