| underwurlde |
Yo!
I am trying to find the electrical timing Video Standards for both NTSC & PAL video. A lot of stuff out there on the 'net for NTSC, not much for PAL and none of them seem to cover everything ! :xeye:
Please can someone confirm horizontal timings for composite video signals:
Total: PAL = 64uS NTSC = 63.5uS
Active Picture Region: PAL = 52uS, NTSC = 52.6uS
Horizontal Blanking Period: PAL = 12uS, NTSC = 10.9us, consisting of:
Front Porch: PAL = 1.5uS?, NTSC = 1.5uS
H Sync: PAL = NTSC = 4.7uS
Back Porch: PAL = 5.8uS?, NTSC = 4.7uS, Consisting of:
BreezeAway: PAL = 0.6uS? NTSC = 0.6uS
Colour Burst: PAL = 2.5uS? NTSC = 2.5uS
Cheers,
Andy |
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| dhaen |
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| underwurlde |
Thanks m8!
That's exactly what I'm after! :)
NTSC anyone. |
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| dhaen |
NTSC spec's changed with the RS170A revision (tightened specs).
I think I only have pre RS170A.
BTW Who's m8? |
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| dhaen |
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| dhaen |
NB On both systems the horizontal datum is the negative transition of h-sync.
On PAL the horizontal blanking is measured at 50% as would be any pulse, but that's not true on NTSC where it's measured at 15 or 20 IRE (I forget exactly).
(1 IRE is 7.14 mV) |
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| underwurlde |
Thanks again dhaen
Andy
BTW m8, as in 'mate'! ;) |
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