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Ç¥ÁعøÈ£ [ÆóÁö] TTAK.KO-08.0022 ±¸Ç¥ÁعøÈ£
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ÇѱÛÇ¥Áظí IPTV ÀÚ¸· ¹æ¼Û
¿µ¹®Ç¥Áظí IPTV Closed Captioning Standard
Çѱ۳»¿ë¿ä¾à º» Ç¥ÁØÀº IPTV¿¡¼­ ÀÚ¸·¹æ¼ÛÀ» ¼Û¼ö½ÅÇϱâ À§ÇÑ ±Ô°ÝÀ¸·Î¼­, H.264¸¦ ÅëÇØ ÀÚ¸·µ¥ÀÌÅ͸¦ Àü¼ÛÇÏ´Â ¹æ¹ý¿¡ ´ëÇÑ Á¤Àǵµ Æ÷ÇÔÇÏ°í ÀÖ´Ù. ÁÖ¿ä ³»¿ëÀ¸·Î¼­, 16:9 È­¸é¿¡¼­ ÀÚ¸·À» ÀûÀýÈ÷ Ç¥ÇöÇϱâ À§ÇÑ ³»¿ë(ÀÚ¸· À©µµ¿ìÀÇ À§Ä¡¿Í Å©±â, ±ÛÀÚÀÇ Å©±â¿Í °³¼ö, ÀüÀÚ¿Í ¹ÝÀÚÀÇ Ã³¸® µî)°ú Çѱ۰ú ¿Ü±¹¾î¸¦ Ç¥ÇöÇϱâ À§ÇÑ ¹æ¹ýÀ» Á¤ÀÇÇÏ°í ÀÖÀ¸¸ç, º» Ç¥ÁØÀÌ ÂüÁ¶ÇÏ°í ÀÖ´Â EIA-708-DÀÇ Ç׸ñ Áß¿¡¼­ Çʼö Ç׸ñÀ¸·Î Á¦Á¤ÇÑ ºÎºÐÀ» Á¤ÀÇÇÑ´Ù.
¿µ¹®³»¿ë¿ä¾à The standard is to send closed caption from IPTV head-end system and to receive at an IPTV receiver. The standard includes how to send closed captioning data over H.264 video stream.
The standard specifies how to present closed captions on the 16:9 widescreen, the data format (caption window position, font size, number of letters, processing of whole-size and half-size character, and etc.), displaying method of Korean and foreign characters and so on. The essential items in EIA-708-D referenced by this standard are also specified.
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CSMA/CD Á¢±Ù¹ý ¹× ¹°¸®°èÃþ ±Ô°Ý 3±Ç °³Á¤ 4: 40 Gb/s ¹× 100 Gb/s ¿î¿ëÀ» À§ÇÑ MAC ÆĶó¹ÌÅÍ, ¹°¸®°èÃþ ¹× °ü¸® ÆĶó¹ÌÅÍ 81Àý: Reconciliation Sublayer (RS) and Media Independent Interface for 40 Gb/s and 100 Gb/s operation(IEEE802.3ba-2010-Clause81)