Digital broadcasting conditional access terminal and method

A mobile communication terminal having a smart card, the mobile communication terminal comprising:

• a Radio Frequency (RF) transceiver for wirelessly receiving from a separate server broadcasting viewing entitlement information indicating whether a user of the mobile communication terminal is entitled to view digital broadcasting
• a digital broadcasting receiver for wirelessly receiving a scrambled digital broadcasting transport stream;
• a multimedia unit for extracting from the scrambled digital broadcasting transport stream broadcasting viewing restriction information and broadcasting viewing entitlement information, and descrambling the scrambled digital broadcasting transport stream using a decoding key;
• and
• a decoding key generator for generating a decoding key for descrambling the scrambled digital broadcasting transport stream, using the digital broadcasting viewing restriction information and the digital broadcasting view entitlement information;
• a controller for transmitting to the decoding key generator the broadcasting viewing restriction information and broadcasting viewing entitlement information extracted by the multimedia unit in a digital broadcasting reception mode to control the decoding key generator to generate the decoding key, and transmitting to the multimedia unit the decoding key generated by the decoding key generator.

A digital broadcasting conditional access method of a mobile communication terminal, the digital broadcasting conditional access method comprising the steps of:

• transmitting wirelessly to a separate server, by a Radio Frequency (RF) Transceiver a request for a digital broadcasting subscription at a request of a user;
• receiving, by the RF transceiver, broadcasting viewing entitlement information indicating whether the user of the mobile communication terminal is entitled to view digital broadcasting from the server responding to the request and storing the received broadcasting viewing entitlement information;
• extracting broadcasting viewing restriction information and broadcasting viewing entitlement information included in the received digital broadcasting transport stream upon receiving a scrambled digital broadcasting transport stream by a digital broadcasting receiver in a digital broadcasting reception mode;
• generating a decoding key for descrambling the scrambled digital broadcasting transport stream using the extracted broadcasting viewing restriction information and the stored broadcasting viewing entitlement information;
• and
• descrambling the scrambled digital broadcasting transport stream using the generated decoding key.