基本信息:
- 专利标题： 数字多媒体广播系统中的条件接收系统及其方法
- 专利标题（英）：A conditional access system in digital multimedia broadcasting system and method thereof
- 申请号：CN200580049538.0 申请日：2005-11-04
- 公开(公告)号：CN101167303A 公开(公告)日：2008-04-23
- 发明人： 洪忠杓 , 蔡太俊
- 申请人： 客得富移动通信股份有限公司
- 申请人地址： 韩国首尔
- 专利权人： 客得富移动通信股份有限公司
- 当前专利权人： 客得富移动通信股份有限公司
- 当前专利权人地址： 韩国首尔
- 代理机构： 北京德琦知识产权代理有限公司
- 代理人： 周艳玲; 宋志强
- 优先权： 10-2005-0033294 2005.04.21 KR; 10-2005-0095052 2005.10.10 KR
- 国际申请： PCT/KR2005/003721 2005.11.04
- 国际公布： WO2006/112581 EN 2006.10.26
- 进入国家日期： 2007-10-19
- 主分类号： H04L9/32
- IPC分类号： H04L9/32
Disclosed is a transmission/receiving system and method for conditionally accessing digital multimedia broadcasting. In the transmission system, a key center system scrambles transmission streams by using a control word generated from first transmitter identification information, encrypts the transmission streams, and transmits encrypted broadcast signals having first transmitter identification information through a key network. A relay system receives the broadcast signals from the key center system, inserts second transmitter identification information other than first transmitter identification information thereinto, and transmits it through a relay network. An authentication system receives a matching key from the key center system and transmits it to an extended service subscriber station available for services provided by the relay system. The extended service subscriber station receives the encrypted broadcast signals to detect the second transmitter identification information,generates a control word by using the matching key, and decrypts the received broadcast signals by using the control word.
公开/授权文献:
- CN101167303B 数字多媒体广播系统中的条件接收系统及其方法 公开/授权日：2013-03-27
IPC结构图谱:
| H | 电学 |
| --H04 | 电通信技术 |
| ----H04L | 数字信息的传输，例如电报通信 |
| ------H04L9/00 | 保密或安全通信装置 |
| --------H04L9/32 | .包括用于检验系统用户的身份或凭据的装置 |