Digital broadcasting conditional access terminal and method

Details Digital broadcasting conditional access terminal and method Digital broadcasting conditional access terminal and method

2006-10-04

2011-10-25

Moorthy, Aravind (Department: 2492)

Cryptography

Video cryptography

Video electric signal modification

C380S201000, C380S212000, C380S229000, C380S233000, C380S255000, C713S150000, C713S165000, C713S168000, C713S189000, C726S026000, C709S213000, C709S219000, C709S231000, C709S232000

Reexamination Certificate

active

08045709

ABSTRACT:
A mobile communication terminal for efficient digital broadcasting conditional access and a method of the mobile communication terminal. The mobile communication terminal includes a digital broadcasting receiver for receiving a scrambled digital broadcasting transport stream, a Subscriber Identify Module (SIM) card unit for generating a decoding key for descrambling the 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 the decoding key generated by the smart card unit, and a controller for transmitting to the smart card unit the broadcasting viewing restriction information and broadcasting viewing entitlement information extracted by the multimedia unit in a digital broadcasting reception mode to control the smart card unit to generate the decoding key and transmitting the decoding key generated by the smart card unit to the multimedia unit.

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