Abstract: An AV presentation device that may be installed as part of an AV presentation system including a television display device includes an RCU for emitting a user signal in response to user actuation and a base unit for connection to the television display device. The base unit includes an input element for receiving the user signal and, responsive thereto, launching a browser application that runs on the base unit and generates a signal for displaying a browser window on the television display device. The base unit also includes a memory storing a file which, when opened by the browser application, displays in the browser window a document including instructions pertaining to the RCU.

Abstract: A single decryption engine is used for decrypting a plurality of encrypted transport streams. Packets in each of the plurality of encrypted transport streams are tagged with a tag value to indicate their origin stream. The tagged packets from the plurality of encrypted transport streams are merged into a merged transport stream. The packets in the merged transport stream are decrypted with the decryption engine to produce a decrypted merged transport stream. The decrypted merged transport stream is split into a plurality of decrypted transport streams, equal in number to the plurality of encrypted transport streams, by routing packets in the decrypted merged transport stream to specific decrypted transport streams according to their tag value. A null-packet padding technique, a gapped-clock technique and a multi-port static RAM controller technique are disclosed.

Abstract: A method for upgrading a consumer premise component (CPC) includes communicatively coupling a removable upgrade decoder to a CPC, the upgrade decoder being configured to decode a data stream, and downloading a computer program code to the CPC, the code enabling the CPC to access the upgrade decoder.

Abstract: A single decryption engine is used for decrypting a plurality of encrypted transport streams. Packets in each of the plurality of encrypted transport streams are tagged with a tag value to indicate their origin stream. The tagged packets from the plurality of encrypted transport streams are merged into a merged transport stream. The packets in the merged transport stream are decrypted with the decryption engine to produce a decrypted merged transport stream. The decrypted merged transport stream is split into a plurality of decrypted transport streams, equal in number to the plurality of encrypted transport streams, by routing packets in the decrypted merged transport stream to specific decrypted transport streams according to their tag value. A null-packet padding technique, a gapped-clock technique and a multi-port static RAM controller technique are disclosed.