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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ ³í¹®Áö I : Á¤º¸Åë½Å

Á¤º¸°úÇÐȸ ³í¹®Áö I : Á¤º¸Åë½Å

Current Result Document : 3 / 3

ÇѱÛÁ¦¸ñ(Korean Title) T-DMB ÇÁ·¹ÀÓ ºÐ¼®À» ÅëÇÑ È¿°úÀûÀÎ Á¦ÇÑ ¼ö½Å ¸Þ½ÃÁö Àü¼Û ¹æ¹ý ¼³°è
¿µ¹®Á¦¸ñ(English Title) Design of Effective Conditional Access Message Transmission Method through the T-DMB FRAME Analysis
ÀúÀÚ(Author) ¼­ÇüÀ±   ±èµ¿Çö   ¹èº´ÁØ   ±èÀ±¼¼   ±èÁ¾´ö   Hyung Yoon Seo   Dong Hyun Kim   Byung Jun Bae   Yun Sei Kim   Jong Deok Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 38 NO. 04 PP. 0273 ~ 0281 (2011. 08)
Çѱ۳»¿ë
(Korean Abstract)
T-DMB´Â µðÁöÅÐ À̵¿ ¸ÖƼ¹Ìµð¾î ¹æ¼ÛÀ¸·Î, À¯·á ¹æ¼Û ¼­ºñ½º¸¦ Á¦°øÇÏ°íÀÚ Á¦ÇѼö½Å ½Ã½ºÅÛÀ» µµÀÔÇß´Ù. °¢°¢ÀÇ °¡ÀÔÀÚµéÀ» ±¸º°Çϱâ À§ÇÑ Á¦ÇѼö½Å¸Þ½ÃÁö´Â °¡ÀÔÀÚÀÇ ¼ö°¡ ´Ã¾î³ª°Ô µÇ¸é ÀÚ¿¬½º·´°Ô ´Ã¾î³ª°Ô µÈ´Ù. ±×·¯³ª T-DMB¿¡¼­ Àü¼Û °¡´ÉÇÑ ´ë¿ªÆøÀº 1.152Mbps·Î Á¦ÇѵǾî ÀÖ´Ù. µû¶ó¼­ ¸¹Àº °¡ÀÔÀÚ¸¦ ¼ö¿ëÇϱâ À§Çؼ­´Â Á¦ÇѼö½Å¸Þ½ÃÁö¸¦ È¿À²ÀûÀ¸·Î Àü¼ÛÇØ¾ß ÇÑ´Ù. º» ³í¹®¿¡¼­´Â Á¦ÇѼö½Å¸Þ½ÃÁö Ç¥ÁØ¿¡ ±Ù°ÅÇÑ ETI Ensemble FrameÀ» ºÐ¼®ÇÑ °á°ú ´ÙÀ½°ú °°Àº È¿À²¼ºÀÇ ¹®Á¦¸¦ ¹ß°ßÇÏ¿´´Ù. ù° ¼­·Î ´Ù¸¥ ä³Î¿¡¼­ Á¦ÇѼö½Å¸Þ½ÃÁö°¡ Áߺ¹ÀÌ µÇ¸ç, µÑ° FrameÀÇ ºñÈ¿À²¼ºÀ¸·Î ÀÎÇØ ³¶ºñ°¡ ¹ß»ýÇÑ´Ù. ÀÌ·¯ÇÑ ¹®Á¦Á¡À» ÇØ°áÇϱâ À§Çؼ­ Áߺ¹ ¶Ç´Â FrameÀÇ ºñÈ¿À²¼ºÀ» Á¦°ÅÇÏ¿© Á¦ÇѼö½Å¸Þ½ÃÁö¸¦ Àü¼ÛÇÒ ¼ö ÀÖ´Â ³í¸®ÀûÀΠä³Î ±¸¼º ¹× Àü¼Û ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈµÈ Àü¼Û¹æ¹ýÀ» °ËÁõÇϱâ À§ÇÏ¿© °ËÁõ ÇÁ·Î±×·¥À» ±¸ÇöÇÏ¿´°í, ±âÁ¸ Ç¥ÁØ Á¦ÇѼö½Å¸Þ½ÃÁöÀü¼Û¹æ¹ý°ú ºñ±³ÇÏ¿´À» ¶§ ¾à 60%ÀÇ Àü¼Û È¿À²ÀÌ Çâ»óµÇ¾ú´Ù.
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(English Abstract)
T-DMB, a digital mobile multimedia broadcasting, has adopted Conditional Access System for Pay-TV services. The number of CA Message for distinguishing each subscribers will naturally increase as subscribers increase. However, in T-DMB available bandwidth is limited to 1.152Mbps. Therefore, in order to accommodate more subscribers, CA Message should be transmitted efficiently. In this paper, as the result of analysing CA Message Standards for ETI Ensemble Frame the following issues efficiency were found. First, CA Message are duplicated in the different channels, Second, wasted frame occurs due to inefficiency of frame. In order to solve these problems, logical channel configuration and transmission method that can send CA Messages by eliminating the inefficiencies of duplication, or Frame of CA Message is proposed. Validation program was implemented, to verify the proposed transmission method and the transmission efficiency was 60% improved compare to that of existing standard CA Message.
Å°¿öµå(Keyword) Á¦ÇÑ ¼ö½Å ½Ã½ºÅÛ(CAS)   Á¦ÇÑ ¼ö½Å ¸Þ½ÃÁö   T-DMB   Conditional Access System   CA Message   ECM   EMM  
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