| 摘要 |
<p>The present invention relates to a method and apparatus for providing a user with a multi-level quality service in a broadcast servicing system. A broadcast servicing system for providing a multi-level quality service according to the present invention comprises a multi-level video encoder, a multi-level audio encoder, a data encoder, a multiplexer, an encryptor, a user quality management system, a user quality authorization system, an encryption key generator, a multi-level video decoder, a multi-level audio decoder, a data decoder, a demultiplexer, a decryptor, an access quality control system, a smartcard, a degrader, and a demultiplexer between channels.</p> |
