DATA TRANSMISSION APPARATUS FOR TRANSMITTING ENCRYPTED DATA TO CONDITIONAL ACCESS MODULE OVER COMMON INTERFACE, METHOD APPLIED TO THE SAME, CONDITIONAL ACCESS MODULE, AND SYSTEM THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a data transmission apparatus and method for generating a plurality of data packets including a payload and a header where encrypted data is stored and transmitting the generated data packets to a conditional access module over a transport stream (TS) interface of a common interface.SOLUTION: The data transmission apparatus for transmitting encrypted data to a conditional access module over a common interface, a method applied to it, the conditional access module, and a system are provided. This encrypted data transmission apparatus comprises: a data packet generation unit for generating a plurality of data packets including a payload and a head for storing the encrypted data; and a TS interface module for transmitting the plurality of data packets to the conditional access module.