Broadcasting randomized subscriber entitlement management messages for digital television

A set of programming messages for a digital broadcasting system (MPEG) is generated as a sequence that is repetitively randomized to form a plurality of sets of the messages, the messages in each set being in random sequence. The messages are then broadcast to the users, preferably at different rate...

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Bibliographische Detailangaben
Hauptverfasser:	FICHET, LAURENT, DE LA TULLAYE, PIERRE, JEZEQUEL, JEAN-FRANCOIS, DE SARZENS, PHILIP
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BROADCAST COMMUNICATION CALCULATING CHECKING-DEVICES CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY COIN-FREED OR LIKE APPARATUS COMPUTING COUNTING CRYPTOGRAPHY DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY HANDLING RECORD CARRIERS IMAGE DATA PROCESSING OR GENERATION, IN GENERAL INFORMATION STORAGE MULTIPLEX COMMUNICATION PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS SEALS STATIC STORES SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR TRANSMISSION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	A set of programming messages for a digital broadcasting system (MPEG) is generated as a sequence that is repetitively randomized to form a plurality of sets of the messages, the messages in each set being in random sequence. The messages are then broadcast to the users, preferably at different rates. By repetitively randomizing the sequence of entitlement management messages the chance of two messages being broadcast back to back after repetitions can be made negligibly small. Thus the decoder will not be confused by closely separated entitlement management messages.