LMH1980 Datasheet, PDF (4/14 Pages) National Semiconductor (TI) – Auto-Detecting SD/HD/PC Video Sync Separator

SDTV Vertical Interval Timing Diagrams (NTSC, PAL, 480I, 576I)
FIGURE 3. NTSC Odd Field Vertical Interval
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FIGURE 4. NTSC Even Field Vertical Interval
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