System, apparatus, and method for conditional broadcast reception without cablecard

摘要

A broadcast reception system, apparatus, and method for a Conditional Access System (CAS) function without a cablecard are provided. A security processor for performing a CAS function without using a cablecard includes a security processor for receiving Entitlement Control Message (ECM) information and Entitlement Management Message (EMM) information from a set-top box, extracting a Control Word (CW) using the ECM information and the EMM information, encrypting the CW, and transmitting the encrypted CW to the set-top box.

主权项

1. An apparatus of a set-top box for performing a Conditional Access System (CAS) function, comprising:
a tuner for tuning to a scrambled broadcast signal from a headend; a demodulator for demodulating the tuned broadcast signal; a security processor for extracting a Control Word (CW) from the tuned broadcast signal and encrypting the extracted CW using a Copy Protection (CP) key and forwarding the encrypted CW to a descrambler of the set-top box; and the descrambler for decrypting the encrypted CW and descrambling the demodulated broadcast signal, which is received from the demodulator, using the decrypted CW, without using a cablecard, wherein the security processor and set-top box respectively include resources, and the security processor performs the extracting, encrypting and forwarding steps utilizing the resources of the set-top box when the resources of the security processor are below a predetermined amount.