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bernd roesch · 16 May 2012, 20:43

Here stand how NTSC work.

My values are 0.3% diffrent. I have H=15674.1749 Hz but spec for NTSC say 15.734 kHz.

http://en.wikipedia.org/wiki/NTSC

NTSC (National Television System Committee) specs are:

Transmission Band UHF/VHF
Lines/Field 525/60
Horizontal Frequency 15.734 kHz
Vertical Frequency 60 Hz
Color Subcarrier Frequency 3.579545 MHz
Video Bandwidth 4.2 MHz
Sound Carrier Frequency 4.5 MHz

on PAL there is a odd and a even frame 1 frame is 312 lines next frame is 313 lines. so line length toggle each frame by 1 to reach 625 lines .On ntsc its same i guess because 525 is not dividiable thru 2.

16 May 2012, 20:43	#7
bernd roesch Registered User Join Date: Apr 2012 Location: germany Posts: 139	Here stand how NTSC work. My values are 0.3% diffrent. I have H=15674.1749 Hz but spec for NTSC say 15.734 kHz. http://en.wikipedia.org/wiki/NTSC NTSC (National Television System Committee) specs are: Transmission Band UHF/VHF Lines/Field 525/60 Horizontal Frequency 15.734 kHz Vertical Frequency 60 Hz Color Subcarrier Frequency 3.579545 MHz Video Bandwidth 4.2 MHz Sound Carrier Frequency 4.5 MHz on PAL there is a odd and a even frame 1 frame is 312 lines next frame is 313 lines. so line length toggle each frame by 1 to reach 625 lines .On ntsc its same i guess because 525 is not dividiable thru 2.