| 摘要 |
The invention relates to a receiver in a cyclic packet data transmission system, the said system furthermore including at least one transmitter. According to the invention, the receiver includes: means (5) for demultiplexing and filtering the said data packets, means (6) for storing a database from data selected from data structures of the packets extracted by filtering, means (19, 23) for detecting updating of data structures including data appearing in the database, means (19, 23) for comparing, in case of detection of updating of a data structure, the data stored in the database and the corresponding data of the said updated data structure and, only in the case in which there is a difference, for notifying a client application of this difference. The invention applies particularly within the framework of the transmission of electronic program guides in DVB ("Digital Video Broadcast") or DSS ("Digital Satellite System") type digital television systems.
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