H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 5/268 (2006.01) H04N 7/24 (2006.01)
Patent
CA 2273940
A stream converting circuit converts the stream type of an original encoded stream transmitted as a transport from a master station into an elementary stream. The converted original encoded stream is supplied to a stream analyzing circuit of a stream splicer. The stream analyzing circuit analyzes the syntax of the original encoded stream received to extract, from the original encoded stream, data elements such as data "vbv_delay" representing the initial state of a VBV buffer, a flag "repeat_first_field" indicating whether a repeat field is to be generated or not during decoding, and a flag "top_field_first" indicating whether the first field is a top field or a bottom field, and then supplies these data elements to a splice controller, which in turn supplies these data elements to the stream processor. The stream processor, according to the data elements, rewrites data elements of a replacement encoded stream.
Selon cette invention, un circuit convertisseur de trains transforme le type de train de données d'un train codé original transmis depuis une station maîtresse en un train élémentaire. Le train codé original transformé est acheminé à un circuit d'analyse de trains d'un épisseur de trains. Ce circuit d'analyse analyse la syntaxe du train codé original reçu pour en extraire les éléments de données telles que les données "vbv_delay" représentant l'état initial du tampon VBV, un message indicateur "repeat_first_field" indiquant si un champ de répétition doit être généré pendant le décodage, et un message indicateur "top_ field_first" indiquant si le premier champ est un champ supérieur ou un champ inférieur, puis communique ces données à un contrôleur d'épissage, qui, à son tour les communique au processeur de trains. Ce processeur de train réécrit les éléments de données d'un train codé de substitution.
Negishi Shinji
Tahara Katsumi
Yasuda Mikita
Gowling Lafleur Henderson Llp
Sony Corporation
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