TV各相关接口的定义介绍
From:RD-TV/PE 谭婷将R-Y及B-Y(或称“Chroma”色度信号)以3.58MHZ的负载波复合在Y信号里合而为一种6MHZ 频宽的信号。这种复合信号称为Composite Video或简称video。传输介面是一根普通的视频线。黄色的为视频信号,白色的为左声道音频信号,红色的为右声道音频信号。
二、S-video (Y.C信号 )
由于复合视频信号是将亮度信号和色度信号采用频谱间置方法复合在一起,导致亮色串扰、清晰度降低等问题,因此出现了S端子接口。使用S 端子的主要目的,就是为了要传送已经经过Y/C 分离的影像信号。S 端子将亮度信号Y和色度信号C分开传输,确保亮度信号不会受到色度信号的干扰。一般Video 信号线传送的则是Y、C 混合的影像信号。Y信号及C信号分离的越好,画面会越清晰,色彩更鲜明。
Pin 1 GND
三、色差信号—Component Video
色差信号Y,R-Y,B-Y信号一般通称为Y,Cb,Cr(digital signal), 模拟的色差信号则称Y,Pb,Pr,YUV则是在欧洲电视系统PAL中的色差信号的通称,包含数字及模拟的色差信号都称YUV。
在色差输入的标注方面,基本上没有规定的标准,每个产品的写法都可能不一样。有的产品上标注“Y Cb Cr”表示可接受隔行色差信号,而“Y Pb Pr”表示逐行色差信号或者HDTV色差信号,而“Y Cb/ Pb Cr/ Pr”表示可自动识别隔行/逐行色差信号。
Pb=(B-Y)/1.772
Pr=(R-Y)/1.402
2 4 6 8 10 12 14 16 18 20 |
1 3 5 7 9 11 13 15 17 19 21 |
Male front view |
Output connector | Input connector | ||
1 | Audio right out | 2 | Audio right in |
3 | Audio left (or mono) out | 6 | Audio left (or mono) in |
4 | Audio return | 4 | Audio return |
7 | Blue out | 7 | Blue in |
5 | Blue return | 5 | Blue return |
11 | Green out | 11 | Green in |
9 | Green return | 9 | Green return |
15 | Red out | 15 | Red in |
13 | Red return | 13 | Red return |
16 | RGB status out | 16 | RGB status in |
14 | RGB status return | 14 | RGB status return |
19 | Sync (composite video) out | 20 | Sync (composite video) in |
17 | Sync return | 18 | Sync return |
21 | Shield | 21 | Shield |
Output connector | Input connector | ||
1 | Audio right out | 2 | Audio right in |
3 | Audio left (or mono) out | 6 | Audio left (or mono) in |
4 | Audio return | 4 | Audio return |
15 | Chrominance out | 15 | Chrominance in |
13 | Chrominance return | 13 | Chrominance return |
8 | Video status out | 8 | Video status in |
19 | Luminance out | 20 | Luminance in |
17 | Luminance return | 18 | Luminance return |
21 | Shield | 21 | Shield |
Output connector | Input connector | ||
1 | Audio right out | 2 | Audio right in |
3 | Audio left (or mono) out | 6 | Audio left (or mono) in |
4 | Audio return | 4 | Audio return |
8 | Video status out | 8 | Video status in |
19 | Composite video out | 20 | Composite video in |
17 | Composite video return | 18 | Composite video return |
21 | Shield | 21 | Shield |
D1 (480i)=480 LINE INTERLACED
D2 (480p)=480 LINE PROGRESSIVEPin | Signal |
1 | Y |
2 | Y-GND |
3 | Pb |
4 | Pb-GND |
5 | Pr |
6 | Pr-GND |
7 | Reserved-Line 1 |
8 | Line 1 |
9 | Line 2 |
10 | Reserved-Line 2 |
11 | Line 3 |
12 | Plug insertion detection GND(支持热插拔) |
13 | Reserved-Line 3 |
14 | Plug insertion detection Latch Outer Shield(侦探D端子是否插入) |
Voltage (V) | Line 1 Total scanning lines (Effective scanning lines) | Line 2 i or p | Line 3 |
5 | 1125(1080) | 60p | 16:9 |
2.2 | 750(720) | / | 4:3(letter box) |
0 | 525(480) | 60i | 4:3 |
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