Abstract: The system for receiving broadcast digital data (in particular pay television services) comprises a master digital terminal (1), and at least one slave digital terminal (2) connected to the master terminal by a link (3) and able to receive protected digital data. The slave digital terminal can access the protected data only if information necessary for accessing the data and received by the master digital terminal is sent by way of link (3) to the slave digital terminal within a predetermined deadline. This information is in particular access entitlements to television services or keys for descrambling the service.

Abstract: A method and device for decoding a packetized data stream comprising packets is disclosed. Each packet comprises a header and a payload encapsulating an elementary stream. The method includes selecting an object header in the elementary stream, inserting a packetized data stream packet header before the object header and transferring the inserted packet header, the object header, and data of the packetized data stream consecutive to the object header to a packetized data stream parser. This is applicable to digital video systems and in particular to digital television decoders.

Abstract: The present invention relates to a device and a process for the stamping in real time by means of a stamping clock (2) of programs, as well as to a receiver and a broadcasting system containing such a device and a packet string obtained by such a process.

Abstract: The invention is related to a demultiplexing device (1) and process for at least two transport streams (21-22). The demultiplexing device comprises at least one merging unit (2), receiving at least two of the transport streams and producing one merged stream (23) comprising a merged arrangement of the originating packets (P1, P2). The merging unit comprises means for marking each packet with an identifier and to assign to it a given value for each received transport stream. The demultiplexing device also comprises at least one demultiplexer (3) receiving and demultiplexing the merged stream produced by the merging unit corresponding to the demultiplexer. That demultiplexer filters the identifiers and determines thereby the received transport streams from which the corresponding packets are derived. Application to digital TV receivers.

Abstract: Method and device for decoding a packetized data stream comprising packets, a packet comprising a header and a payload, an elementary stream being encapsulated as payload in the packets.