METHOD AND DEVICE FOR SWITCHING AUDIOVISUAL COMPONENTS IN THE COMPRESSED DOMAIN, PARTICULARLY APPLIED TO A DIGITAL SWITCHING SYSTEM.

摘要

The invention relates to a method for switching digital audiovisual components in the compressed domain. The method based on two audiovisual signals outputs a digital audio-visual signal whose components are generated: up to the instant of switching, by copying the components of the first digital audiovisual signal and recoding by a set of transformations of the preceding image group or comprising the image corresponding to the switching instant ;. after the instant of switching T0, by copying the components of the second digital audiovisual signal and recoding by a set of transformations of the next image group or comprising the image corresponding to the instant of commutation.The invention also relates to a device and a digital switching system. In particular, the invention applies to the switching of digital terrestrial television programs.