Communication of VBI data in digital television data streams

Details Communication of VBI data in digital television data streams Communication of VBI data in digital television data streams

1997-01-16

1998-12-01

Britton, Howard

Television

Bandwidth reduction system

Data rate reduction

348478, 3488452, H04N 7025, H04N 7088

Patent

active

058446150

ABSTRACT:
A method and apparatus are provided for communicating VBI user information in digital television data streams via a generic syntax. The syntax allows the digital transport of virtually any type of user data that may be carried in the VBI portion of an analog television signal. A pixel generator is used to insert VBI lines into a digital video signal using information provided in the user portion of the digital data stream. The syntax provides the pixel generator with the start time of the first symbol, the number of pixels per symbol, the high and low levels to insert, the fraction of the symbol time that is transition time, the number of symbols to insert and the frame line number on which to insert the data.

REFERENCES:
patent: 5289276 (1994-02-01), Siracusa et al.
patent: 5400401 (1995-03-01), Wasilewski et al.
patent: 5519780 (1996-05-01), Woo et al.
patent: 5526427 (1996-06-01), Thomas et al.
patent: 5699124 (1997-12-01), Nuber
patent: 5717461 (1998-02-01), Hoogenboom

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