有沒人試過直接餵CCIR656訊號給BT878
 

如此篇文章:
http://www.avsforum.com/avs-vb/arch...p/t-267735.html

我看了這篇文章, 我們的做法是把BT878的8個pin腳GPIO[0:7]接到
CCIR 656訊號DATA[0:7], 並把CCIR 656的clock接到BT878的GPCLK腳.

結果, 我在Windows下不灌任何BT878 WDM driver, 而用Dscaler來看,
發覺找不到任何訊號, 就像上述鏈結中LiOn作者所做的一樣, 故意選了
SDI silk capture card, 軟體選過所有的input(包含類比輸入端), 沒訊號,
就是沒訊號.
已經找人測過CCIR 656訊號來源應沒問題.

會用這個的目的, 是不想把已經是digital video的訊號再轉成類比再接給
BT878.

知道的前輩能否幫幫忙..拜拖..謝謝..

DScaler的input type選CCIR或SDI(INPUTTYPE_CCIR).
DScaler的video format選NTSC.
你用的DScaler 版本 ?
DScaler 硬體設定?
Card Number 87 -SDI Silk 100 (S-Video Jumper) ?
Card Number 88 -SDI Silk 100 (C-Video Jumper) ?
Card Number 90 - SDI Silk 200 (S-Video Jumper)
Card Number 91 - SDI Silk 200 (C-Video Jumper) ?

// Card Number 87 - SDI Silk 100 (S-Video Jumper)
{
"SDI Silk 100 (S-Video Jumper)",
5,
{
{
"Composite 1",
INPUTTYPE_COMPOSITE,
0x00,
},
{
"Composite 2",
INPUTTYPE_COMPOSITE,
0x01,
},
{
"Composite 3",
INPUTTYPE_COMPOSITE,
0x03,
},
{
"S-Video",
INPUTTYPE_SVIDEO,
0xD2,
},
{
"SDI",
INPUTTYPE_CCIR,
0x00,
},
},
PLL_28,
TUNER_ABSENT,
SOUNDCHIP_NONE,
InitSasem,
Sasem4ChannelInputSelect,
SetAnalogContrastBrightness,
SetAnalogSaturationU,
SetAnalogSaturationV,
SetAnalogHue,
StandardSetFormat,
CAudioDecoder::AUDIODECODERTYPE_DETECT,
0x1F800,
{0xD, 0xE, 0xB, 0x7, 0, 0, }
},
// Card Number 88 - SDI Silk 100 (C-Video Jumper)
{
"SDI Silk 100 (C-Video Jumper)",
5,
{
{
"Composite 1",
INPUTTYPE_COMPOSITE,
0x00,
},
{
"Composite 2",
INPUTTYPE_COMPOSITE,
0x01,
},
{
"Composite 3",
INPUTTYPE_COMPOSITE,
0x02,
},
{
"Composite 4",
INPUTTYPE_COMPOSITE,
0x03,
},
{
"SDI",
INPUTTYPE_CCIR,
0x00,
},
},
PLL_28,
TUNER_ABSENT,
SOUNDCHIP_NONE,
InitSasem,
Sasem4ChannelInputSelect,
SetAnalogContrastBrightness,
SetAnalogSaturationU,
SetAnalogSaturationV,
SetAnalogHue,
StandardSetFormat,
CAudioDecoder::AUDIODECODERTYPE_DETECT,
0x1F800,
{0xD, 0xE, 0xB, 0x7, 0, 0, }
},
// Card Number 90 - SDI Silk 200 (S-Video Jumper)
{
"SDI Silk 200 (S-Video Jumper)",
7,
{
{
"Composite 1",
INPUTTYPE_COMPOSITE,
0x00,
},
{
"Composite 2",
INPUTTYPE_COMPOSITE,
0x01,
},
{
"Composite 3",
INPUTTYPE_COMPOSITE,
0x03,
},
{
"S-Video",
INPUTTYPE_SVIDEO,
0xD2,
},
{
"SDI 1",
INPUTTYPE_CCIR,
0x00,
},
{
"SDI 2",
INPUTTYPE_CCIR,
0x01,
},
{
"SDI 3",
INPUTTYPE_CCIR,
0x02,
},
},
PLL_28,
TUNER_ABSENT,
SOUNDCHIP_NONE,
InitSasem,
Silk200InputSelect,
SetAnalogContrastBrightness,
SetAnalogSaturationU,
SetAnalogSaturationV,
SetAnalogHue,
StandardSetFormat,
CAudioDecoder::AUDIODECODERTYPE_DETECT,
0x1F800,
{0xD, 0xE, 0xB, 0x7, 0, 0, }
},

// Card Number 91 - SDI Silk 200 (C-Video Jumper)
{
"SDI Silk 200 (C-Video Jumper)",
7,
{
{
"Composite 1",
INPUTTYPE_COMPOSITE,
0x00,
},
{
"Composite 2",
INPUTTYPE_COMPOSITE,
0x01,
},
{
"Composite 3",
INPUTTYPE_COMPOSITE,
0x02,
},
{
"Composite 4",
INPUTTYPE_COMPOSITE,
0x03,
},
{
"SDI 1",
INPUTTYPE_CCIR,
0x00,
},
{
"SDI 2",
INPUTTYPE_CCIR,
0x01,
},
{
"SDI 3",
INPUTTYPE_CCIR,
0x02,
},
},
PLL_28,
TUNER_ABSENT,
SOUNDCHIP_NONE,
InitSasem,
Silk200InputSelect,
SetAnalogContrastBrightness,
SetAnalogSaturationU,
SetAnalogSaturationV,
SetAnalogHue,
StandardSetFormat,
CAudioDecoder::AUDIODECODERTYPE_DETECT,
0x1F800,
{0xD, 0xE, 0xB, 0x7, 0, 0, }
},



// Card Number 54 - RS BT Card
{
"RS BT Card",
7,
{
{
"Composite",
INPUTTYPE_COMPOSITE,
3,
},
{
"S-Video",
INPUTTYPE_SVIDEO,
1,
},
{
"Composite over S-Video",
INPUTTYPE_COMPOSITE,
1,
},
{
"CCIR 1",
INPUTTYPE_CCIR,
0,
},
{
"CCIR 2",
INPUTTYPE_CCIR,
0,
},
{
"CCIR 3",
INPUTTYPE_CCIR,
0,
},
{
"CCIR 4",
INPUTTYPE_CCIR,
0,
},
},
PLL_28,
TUNER_ABSENT,
SOUNDCHIP_NONE,
InitRSBT,
RSBTCardInputSelect,
SetAnalogContrastBrightness,
SetAnalogSaturationU,
SetAnalogSaturationV,
SetAnalogHue,
StandardSetFormat,
CAudioDecoder::AUDIODECODERTYPE_DETECT,
0,
{0, 0, 0, 0, 0, 0, }
},

我用的是4.1.11版的Dscaler

還要設定硬體嗎? 我的bt878卡是沒牌的, 我軟體設定是選一個叫
sdi silk 100的卡, 選的input是SDI....

我忘了選video format....

請問一下, 這樣的video input, BT878也是用DMA在傳資料給host memory嗎?
Bt878上的硬體down scale功能還有用嗎?
(因為BT878好像有不只一種的digital video輸入的方法)

實在太感激了..

DScaler 4.1.12支援的SDI Silk 100 有2種:
Card Number 87 -SDI Silk 100 (S-Video Jumper)
Composite 1/Composite 2/Composite 3/S-VIDEO/SDI
Card Number 88 -SDI Silk 100 (C-Video Jumper)
Composite 1/Composite 2/Composite 3/Composite 4/SDI

謝謝...有訊號了...把兩個版子(一張是ccir656的generator,
另一張是Bt878也就是receiver)的地線綁在一起接地, 就可以了.

dscaler軟體的設定我是選sdi silk (C-jumper)....可能線接的不好,
所以有雜訊.

謝謝您