Abstract: In a downloadable conditional access system (DCAS), preferably all DCAS-specific code is implemented in a configurable secure (CS) processor that is in communication with the host processor. Preferably, no DCAS-specific code is executed in the host processor. The host processor delivers commands to the CS processor, which the CS processor performs to configure itself in accordance with the particular DCAS encryption scheme used by the DCAS. Once configured, the CS processor executes a DCAS software module that has been downloaded to the CS processor, which looks for the corresponding EMMs and ECMs, processes them to obtain the CW, and then uses the CW to decrypt the content stream.

Abstract: In a downloadable conditional access system (DCAS), preferably all DCAS-specific code is implemented in a configurable secure (CS) processor that is in communication with the host processor. Preferably, no DCAS-specific code is executed in the host processor. The host processor delivers commands to the CS processor, which the CS processor performs to configure itself in accordance with the particular DCAS encryption scheme used by the DCAS. Once configured, the CS processor executes a DCAS software module that has been downloaded to the CS processor, which looks for the corresponding EMMs and ECMs, processes them to obtain the CW, and then uses the CW to decrypt the content stream.

Abstract: In a downloadable conditional access system (DCAS), preferably all DCAS-specific code is implemented in a configurable secure (CS) processor that is in communication with the host processor. Preferably, no DCAS-specific code is executed in the host processor. The host processor delivers commands to the CS processor, which the CS processor performs to configure itself in accordance with the particular DCAS encryption scheme used by the DCAS. Once configured, the CS processor executes a DCAS software module that has been downloaded to the CS processor, which looks for the corresponding EMMs and ECMs, processes them to obtain the CW, and then uses the CW to decrypt the content stream.

Abstract: A digital information stream communication (DISC) system within a first conditional access system (CAS) is disclosed. The DISC system communicates information from a digital information stream (DIS) having DIS attributes for accessibility using the first CAS or associated with a digital media (DM) content in the DIS. The DISC system includes a monitoring module configured to receive the DIS and identify one or more of the DIS attributes for accessibility using the first CAS. The DISC system also includes a processing module configured to identify one or more of the DIS attributes associated with the DM content and analyze the DIS attributes. It does this to determine whether to send DIS data from the DIS to a second CAS based upon the DIS data being included in the DIS attributes. The DISC system also includes a processor configured to operate the monitoring module and the processing module.

Abstract: In a downloadable conditional access system (DCAS), preferably all DCAS-specific code is implemented in a configurable secure (CS) processor that is in communication with the host processor. Preferably, no DCAS-specific code is executed in the host processor. The host processor delivers commands to the CS processor, which the CS processor performs to configure itself in accordance with the particular DCAS encryption scheme used by the DCAS. Once configured, the CS processor executes a DCAS software module that has been downloaded to the CS processor, which looks for the corresponding EMMs and ECMs, processes them to obtain the CW, and then uses the CW to decrypt the content stream.

Abstract: A set top box includes a front-end (e.g., a network interface) for receiving programming content over a broadband communication network and a processor operatively associated with the front-end. The set top box also includes a resolver operatively associated with the processor for determining a network-level multicast address corresponding to a domain name of a virtual channel on which the broadcast programming is available.

Abstract: A system for streaming encrypted conditional access (CA) data, such as control words, from a primary or master conditional access provider (CAP) to one or more secondary CAPS. The primary CAP encrypts content (program data) that is to be access-controlled, such as a television program, according to the associated CA data. A first group of user terminals is compatible with the CA data of the primary CAP. The CA data is then provided to the secondary CAPs to provide corresponding CA data for the content in the secondary CAPs' associated formats for compatibility with other groups of terminals. The invention can be used in any packet-based distribution system, including a broadband television network headend, and avoids the need for the secondary CAPs to request the control words on an as-needed basis. Moreover, the CA data for a current crypto-period and a number of future crypto-periods are provided in a “sliding window” to allow the secondary CAP to begin preparing its CA data in advance.

Abstract: Streaming content is encrypted by segmenting the content into a plurality of crypto periods, and by encrypting the content for each of a plurality of crypto periods with a different cryptographic key. The crypto periods are based on either (i) fixed time intervals, (ii) a fixed number of packets, (iii) a fixed marker count, or (iv) a pseudo random number of packets. Methods are provided for determining how to record the key changing criteria, and how to convey this information to VOD servers.

Abstract: A wireless video display apparatus and associated method for displaying an image over a display in response to video information, the wireless video display apparatus comprising a display processing module, a wireless video link, and a wireless video display module. The wireless video link transmits to the wireless video display module processed video information in response to the video information. The wireless display module displays a video image in response to the processed video information received over the wireless video link. In one aspect, a battery provides power to be used by the display.