Method of partially scrambling a data stream

Method of partially scrambling a data stream

A method of partially scrambling a data stream including transport stream packets, each transport stream packet having a header and a payload, wherein a sequence of transport stream packets has payloads carrying encoded data elements, arranged in units, includes: selecting transport stream packets f...

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1. Verfasser: ANDREW.AUGUSTINE.WAJS,GERARD.JOHAN.DEKKER,DAVID.NEIL.SIEDLE,ROELOF.VAN.WIJK,RONALDUS.PETRUS.JOH.HOOGENBOOM,PALMER JAMES,STEWART CROSBIE,STOCKHAMMER THOMAS FRANZ
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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creator ANDREW.AUGUSTINE.WAJS,GERARD.JOHAN.DEKKER,DAVID.NEIL.SIEDLE,ROELOF.VAN.WIJK,RONALDUS.PETRUS.JOH.HOOGENBOOM,PALMER JAMES,STEWART CROSBIE,STOCKHAMMER THOMAS FRANZ
description A method of partially scrambling a data stream including transport stream packets, each transport stream packet having a header and a payload, wherein a sequence of transport stream packets has payloads carrying encoded data elements, arranged in units, includes: selecting transport stream packets forming a subsequence of the sequence, and scrambling at least part of the payloads of each transport stream packet in the subsequence. The method further includes monitoring the payloads of at least some of the transport stream packets in the sequence for the presence of data indicating a boundary between two subsequent units, and, for selected units, including at least one of the transport stream packets carrying data forming part of the selected unit in the sub-sequence.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
title Method of partially scrambling a data stream
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