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±¹³» Áö»óÆÄ µðÁöÅÐ ¸ÖƼ¹Ìµð¾î ¹æ¼Û T-DMB(Terrestrial Digital Multimedia Broadcasting) ¼ºñ½ºÀÇ ¿Àµð¿À Ç¥ÁØÀ¸·Î äÅÃµÈ MPEG-4 BSAC ±â¼úÀº Fine Grain Scalability°ú AAC¿Í °°Àº ¾ÐÃàÀ» Á¦°øÇÏ´Â CodecÀÔ´Ï´Ù. ºñÆ®½ºÆ®¸²ÀÌ ÇϳªÀÇ Base Layer ¿Í ¿©·¯ °³ÀÇ ÀÛÀº Enhancement Layer·Î ±¸¼ºµÇ¾î ÀÖ½À´Ï´Ù. |
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ÇȽºÆ®¸®´Â T-DMB ȯ°æ¿¡¼ MPEG-4 SL°ú MPEG-2 TS¸¦ ÅëÇØ¼ ÃÖÀûÀÇ »óÅ·ΠÀü¼ÛÇÒ ¼ö ÀÖµµ·Ï MPEG-4 BSAC ºñÆ®½ºÆ®¸² À» »ý¼ºÇÒ ¼ö ÀÖ´Â MPEG-4 BSAC Encoding ModuleÀ» Á¦°øÇÕ´Ï´Ù. ¶ÇÇÑ MS, TNS, PNS µî ¾ÐÃàÀ» À§ÇÑ °¢Á¾ ÅøÀ» ¿Ïº®ÇÏ°Ô ±¸ Çö, ½Ç½Ã°£ ¾ÐÃà ±â¼úÀ» ±¸ÇöÇÏ¸é¼ ¿ø·¡ MPEG-4 BSACÀÇ À½ÁúÀ» À¯ÁöÇÒ ¼ö ÀÖ½À´Ï´Ù. |
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Special Features [Encoding] |
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¤ýT-DMB ȯ°æ¿¡ ÃÖÀûÈ - MPEG-2 SL /MPEG-4 SL¸¦ ÅëÇØ ÃÖÀûÀÇ »óÅ·ΠÀü¼Û - T-DMB ȯ°æ¿¡ ÃÖÀûÈµÈ bitrate control ±â¼ú Àû¿ë ¤ýT-DMB Encoder¿Í T-DMB Visual Radio Encoder ȯ°æ Áö¿ø ¤ý¾ÐÃàÀ» À§ÇÑ °¢Á¾ Tool (MS, TNS, PNS) ¿Ïº® Áö¿ø ¤ý¿©·¯ °³ÀÇ FrameÀ» ÇϳªÀÇ MPEG-4 Sync Layer PacketÀ¸·Î Àü¼ÛÇÏ´Â ±â´É Áö¿ø (Num Of SubFrame = 1, ¡¦, 10) ¤ý½Ç½Ã°£ Encoding ±¸Çö ¤ý°íÀ½Áú ±¸Çö : CD±Þ ¾ÐÃà - ÀÚü °³¹ßµÈ Psychoacoustic Model - ÃÖÀûÈµÈ bitrate-distortion Control |
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ÇȽºÆ®¸®´Â MPEG-4 BSAC Decoder´Â PNS, TNS µîÀÇ ¸ðµç ToolµéÀ» Ç¥Áذú ¿Ïº®ÇÏ°Ô È£È¯µÇµµ·Ï º¹È£È¸¦ ÇÕ´Ï´Ù. ¶ÇÇÑ, °í Á¤¼Ò¼öÁ¡ ÇüÅ·Π±¸ÇöÇÏ¸é¼ º¹Àâµµ¸¦ °³¼±ÇÏ¿©, ¸ð¹ÙÀÏ ±â±â µîÀÇ Low-power½Ã½ºÅÛ¿¡¼µµ °íÀ½Áú ¼ºñ½º¸¦ °¡´ÉÇϵµ ·Ï Áö¿øÇÕ´Ï´Ù. |
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Special Features [Decoding] |
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¤ý´Ù¾çÇÑ ÀÓº£µðµå ȯ°æ Áö¿ø - TI, ARM, EQUATOR, x86 Áö¿ø - °íÁ¤¼Ò¼öÁ¡ Decoder ¿Ïº® ±¸Çö ¤ý¾ÐÃàÀ» À§ÇÑ °¢Á¾ Tool (MS, TNS, IS, PNS) ¿Ïº® Áö¿ø ¤ýMPEG-4 Compliant BSAC Decoding Module |
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