| 摘要 |
<p>A method and apparatus for terminal to obtain decryption and descrambling information is provided, the method includes the following steps: the terminal identifies and obtains ECM data in the decryption and descrambling information according to the ECM data unit type value from the multiplexed sub-frame data segment corresponding to the program being scrambled to be transmitted and selected by user; and identifies and obtains EMM data according to the EMM data unit type value from the multiplexed sub-frame data segment corresponding to the service identifier used by the transmitted EMM data. Using the above technical solution of the invention, the analyzing of connection information and connection protocol between the transmitted program service data and ECM data is omitted, because that the ECM data in decryption and descrambling information is obtained from the multiplexed sub-frame corresponding to the program to be received, and because of the operation that the corresponding ECM data is obtained by using the connection relationship, the bandwidth resource is saved, the operation for the terminal to obtain ECM data is simplified, and the requirement of the conditional accessing system of terminal to the terminal resource is reduced at the same time.</p> |
