Differences

This shows you the differences between two versions of the page.

--- digital_television [2017/11/14 09:18] – [디지털 플랫폼: 물리적 경로] hkimscil
+++ digital_television [2020/11/06 21:40] – [Analog Television] hkimscil
@@ Line 1: / Line 1: @@
+====== Analog Television ======
+^ ^ NTSC  ^ PAL  ^
+| stands for   | National Television System Committee  | Phase Alternation by Line  |
+| Bandwidth  | 6 MHz  | 7 to 8 MHz  |
+| Vertical Freq  | 60 Hz  | 50 Hz  |
+| Horizontal Frequency  | 15.734 kHz  | 15.625 kHz  |
+| Lines  | 525 (480)  | 625 (576)  |
+| Field per sec. | 60  | 50  |
+| Frame((Analog TVs use a cathode-ray tube (CRT) to beam light against the backside of a screen. These tubes aren’t like projectors—they can’t fill up a screen in one go. Instead, they quickly beam light down from the top of a screen. As a result, though, the picture at the top of the screen starts to fade as the CRT beams light at the bottom of the screen. from https://www.howtogeek.com/428987/whats-the-difference-between-ntsc-and-pal/)) per sec. | 30  | 25  |
+{{https://static.diffen.com/uploadz/thumb/f/ff/PAL-NTSC.svg/610px-PAL-NTSC.svg.png}}
+{{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