Differences

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--- digital_television [2020/11/06 21:41] – [Dital Broadcasting -- IPTV and all others] hkimscil
+++ digital_television [2022/10/18 08:30] (current) – [Analog Television] hkimscil
@@ Line 10: / Line 10: @@
 {{https://static.diffen.com/uploadz/thumb/f/ff/PAL-NTSC.svg/610px-PAL-NTSC.svg.png}}
+see also https://www.diffen.com/difference/NTSC_vs_PAL
-{{https://www.howtogeek.com/wp-content/uploads/2019/07/1-5.png.pagespeed.ce.goyY-Ja3_y.png}}
 ====== Dital Broadcasting -- IPTV and all others ======
 reference. {{:databroadcastetri.pdf|ETRI 보고서}} PDF
@@ Line 25: / Line 26: @@
     * robust signals
     * uses **less bandwidth**
-  * sending information
+그러나 영상 외에도 필요해지는 것
+  * sending (and receiving) information
     * via one channel: one-way channel, broadcast channel, forward path, or in-band channel, etc.
     * via two channel: two-way channel, interactional channel, **return path**, back channel or out-of-band channel, etc.
@@ Line 80: / Line 82: @@
   * GEM (Globally Executable MHP)
     * MHP에서 유럽 방송환경에만 쓰이는 요소를 제거하여 OCAP과 ACAP에 이용하기 용이하도록 한 표준임.
-  * OCAP (OpenCableApplication Platform)
+  * OCAP (Open Cable Application Platform)
     * 미국 케이블 방송 기구인 Cable Labs에서 제정한 양방향 TV 미들웨어 표준
     * GEM에 Open Cable의 환경적인 요소를 추가하는 식으로 제정