Patent ID: 9210458
Filing Date: 2015-12-08
Classification: H04N

Abstract:
1. An audio/video content receiver being configured to receive media content from a content source by a broadcast data path, the media content being arranged as a plurality of media channels, the content receiver comprising: host circuitry having a tuner configured to assign logical channel indices to the media channels to allow selection, at the host circuitry, of one or more of the media channels for reproduction by selecting the corresponding logical channel index, the host circuitry storing channel association data associating the logical channel indices with the received media channels; and removable conditional access circuitry configured to decode access-controlled encoded broadcast content, the host circuitry and the removable conditional access circuitry being arranged to provide an encrypted communication link for decoded access-controlled encoded broadcast content between the removable conditional access circuitry and the host circuitry, wherein the host circuitry is configured to acquire channel association data via the broadcast data path; the removable conditional access circuitry is configured to provide further channel association data to the host circuitry; the host circuitry comprises a detector configured to detect a conflict of logical channel index between the channel association data acquired by the host circuitry from the broadcast data path and the channel association data provided by the removable conditional access circuitry and, in the case of a conflict, to detect one or more unused logical channel indices; and the removable conditional access circuitry is configured to select one of the unused logical channel indices for use by a media channel for which the logical channel index defined in the removable conditional access circuitry's channel association data conflicts with a logical channel index defined in the host circuitry's channel association data.