FIELD: radio engineering, communication.
SUBSTANCE: disclosed is an audio/video content receiver for receiving media content from a content source via a broadcast data channel, the media content being arranged as a plurality of media channels, the content receiver comprising a host module having a tuner configured to assign a logical channel index to the media channels to allow selection, at the host module, of one or more of the media channels for reproduction by selecting the corresponding logical channel index, the host module storing channel association data associating the logical channel indices with the received media channels; a removable conditional access module (CAM). The CAM has an access control unit for decoding access-controlled encoded broadcast content, the host module and the removable CAM being configured to provide an encrypted data link for decoded access-controlled encoded broadcast content between the CAM and the host module; the host module is configured to acquire channel association data via the broadcast data channel; the CAM is configured to provide additional channel association data to the host module; the host module comprises a detector configured to detect a conflict of a logical channel index between the channel association data acquired by the host from the broadcast data channel and the channel association data provided by the CAM and, in case of a conflict, to detect one or more unused logical channel indices; and the CAM is configured to select one of the unused logical channel indices for the use by a media channel for which the logical channel index defined in the channel association data of the CAM conflicts with a logical channel index defined in the channel association data of the host.
EFFECT: enabling the reception of media content from a content source via a data broadcast route with protection from encoding of decoded digital content.
19 cl, 7 dwg
