Abstract: A method for managing cache memory in a user device is disclosed. The method comprises stagewise excluding adding data to the cache memory as cache memory fill level increases, the stagewise excluding comprising determining, for each successive stage of cache memory fill level, exclusion of the data from being added to the cache memory according to rules of exclusion of adding of data to the cache memory that are increasingly restrictive.

Abstract: In order to optimize cache memory management, the invention proposes a method and corresponding apparatus that comprises application of different cache memory management policies according to data origin and possibly to data type and the use of increasing levels of exclusion from adding to cache of data the exclusion levels being increasingly restrictive with regard to adding data to cache as the cache memory fill level increases. The method and device allows among others to keep important information in cache memory and reduce time spent in swapping information in- and out of cache memory.

Abstract: A method for processing a channel change request in a television system operating according to the IP protocol. This method is implemented in a digital decoder of the subscriber and its purpose is to avoid overloading the access network in the case of burst zapping and avoid penalizing the reactivity time of the system in the case of simple zapping. In the case of reception of a burst of channel change requests separated by a time interval less than the duration of the predetermined timeout (Ttempo), the digital decoder transmits, to the access network of the system, two physical channel change requests, one for the first channel change request and the other for the last channel change request of the burst.

Abstract: The present invention relates to a method for processing a channel change request in a television system operating according to the IP protocol. This method is implemented in a digital decoder of the subscriber and its purpose is to avoid overloading the access network in the case of burst zapping and avoid penalising the reactivity time of the system in the case of simple zapping. According to the invention, in the case of reception of a burst of channel change requests separated by a time interval less than the duration of the predetermined timeout (Ttempo), the digital decoder transmits, to the access network of the system, two physical channel change requests, one for the first channel change request and the other for the last channel change request of the burst. The first request is transmitted immediately after the reception of the first channel change request and the last request is transmitted with a delay equal to the duration of the timeout after the reception of the last channel change request.