System and method for digitally encoding and compressing vbi...

Details System and method for digitally encoding and compressing vbi... System and method for digitally encoding and compressing vbi...

H - Electricity

04

N

H04N 7/26 (2006.01) H04N 7/52 (2006.01)

Patent

CA 2262368

A system and method are disclosed for digitally representing reference and data signals transmitted in the vertical blanking interval (VBI) of an analog television waveform such as NTSC or PAL. The system includes means for compressing the digital representation of the VBI signals. A board range of reference and data signals is capable of being represented. The compressed representations of the VBI signals are particularly suitable for inclusion in an MPEG2 compliant signal carrying compressed digital video and audio.

On décrit un système et un procédé destinés à représenter numériquement des signaux de données et de référence transmis dans l'intervalle de suppression de trame (VBI) d'une forme d'onde analogique de télévision, telle que celle des formats NTSC ou PAL. Ce système comprend des moyens destinés à comprimer la représentation numérique des signaux de l'intervalle de suppression de trame. Une large gamme de signaux de données et de référence peut être représentée, les représentations comprimées de ces signaux étant notamment conçues pour être incluses dans un signal adaptatif MPEG2 portant des données numériques comprimées, vidéo et audio.

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