Abstract: The present invention relates to an interface module for a host (2) such as a digital television decoder, permitting the processing of information coming from the host (2) in a conditioned manner subject to a conditional access system (11), comprising authorization means (7) by which the user justifies his access rights.

Abstract: The invention relates to a device which can be used for on-the-fly conversion, using a new, unknown method involving the receiver already in place at the user's premises, of a low-bandwidth digital audiovisual stream which is highly compressed (for transport reasons) into another digital audiovisual stream which is less compressed but which is perfectly adapted to the receiver in place responsible for performing same. The inventive device is particularly adapted to open receivers and modules which are compatible with the DVB-CI standard.

Abstract: The invention relates to a digital signal-processing module (2) which can be connected to a host (1) for receiving at least one input transport stream of encoded digital data in a pre-determined compression format. The inventive module comprises means of decoding the digital signals contained in the input transport stream. The invention also relates to a system comprising the aforementioned module (2) and to a method of receiving and processing digital signals. The invention is particularly suitable for use in the field involving the reception and decoding of digital transport streams for the broadcasting of audio-visual programmes.

Abstract: The present invention relates to an interface module for a host (2) such as a digital television decoder, permitting the processing of information coming from the host (2) in a conditioned manner subject to a conditional access system (11), comprising authorization means (7) by which the user justifies his access rights.