Abstract: A method replacing a main content by at least one secondary content, which implements steps including: determining an instant of video breaking and an instant of audio or subtitle breaking, based on at least one breaking packet; replacing in the original stream at least one video packet and audio packet or subtitle packet respectively of the main content by at least one video packet and audio packet or subtitle packet respectively of the secondary content starting from the video and the audio or subtitle breaking instant, respectively, and at least one audio packet or subtitle packet of the main content, delivering a modified stream; updating, in the modified stream of a reference clock, continuity counters of video packets and audio packets or subtitle packets respectively and at least one video reconstruction temporal information, and audio or subtitle reconstruction respectively in the replacement video packets, and audio or subtitle packets respectively.

Abstract: The present invention concerns a method for generating a stream in accordance with the DVB standard that is understood by a first-generation decoder, typically in accordance with DVB-S/C/T/, and which also enables the deterministic generation of a stream in accordance with the second-generation DVB-T2 standard. A method is described for generating a stream containing a multiplex according to a first-generation DVB standard. This stream also contains the information relating to an encapsulation in accordance with DVB-T2 of at least one subset of broadcast programs inserted in the stream in the form of private sections that will be ignored by a first-generation decoder that will decode the stream in accordance with the first-generation standard. Equipment according to the invention can construct the T2-MI stream at a DVB-T2 transmitter deterministically, which can then be integrated in an SFN network.

Abstract: The present invention concerns a method of calculating a filtered filling level of the input buffer of a gateway generating a data stream from a received data stream resisting the jitter of the stream received. It applies more particularly to a gateway receiving an MPEG (Moving Picture Experts Group) transport stream received according to the IP protocol (Internet Protocol) and retransmitted over an ASI interface (Asynchronous Serial Interface). The invention proposes a method of calculating a filtered filling level of the input buffer resisting the jitter of the stream received. The received stream passing through an input buffer, the method is based on a regulation as a function of the maximum level of the buffer evaluated over a period of time, making it possible to protect against the effects of the jitter introduced into the received stream.

Abstract: The Invention pertains to the field of broadcasting digital services to terminals for transmitting said services, and concerns the problem of the smooth transfer between two versions of a same stream upstream from a transmitter within transmission networks on a single modulation frequency. The invention relates to a device for the fine synchronization of different versions of a data stream received with a certain offset or various jitters. In order to do so, the device includes different paths for detecting errors (ETR) and synchronizing the stream (SNF).

Abstract: A contribution system where the national services are not duplicated in the single stream. This single stream is transmitted in a mode not implementing burst transmission. Advantageously, the single stream is not protected by an FEC error correcting code, as present in the radio broadcast standard, for example DVB-H. Synchronization is provided by the insertion by the concentrator of synchronization packets comprising three synchronization stamps. A first stamp serves to synchronize the deconcentrators with each other and with the concentrator. A second stamp generates a first synchronization signal allowing synchronous generation of the period of the burst transmission mode necessary for generating the regional signal. The third stamp serves to generate a second synchronization signal for generating so-called “MIP” synchronization packets for synchronizing the various modulators.

Abstract: The present invention concerns a method of calculating a filtered filling level of the input buffer of a gateway generating a data stream from a received data stream resisting the jitter of the stream received. It applies more particularly to a gateway receiving an MPEG (Moving Picture Experts Group) transport stream received according to the IP protocol (Internet Protocol) and retransmitted over an ASI interface (Asynchronous Serial Interface). The invention proposes a method of calculating a filtered filling level of the input buffer resisting the jitter of the stream received. The received stream passing through an input buffer, the method is based on a regulation as a function of the maximum level of the buffer evaluated over a period of time, making it possible to protect against the effects of the jitter introduced into the received stream.