(F 0) FIELD 1 NUMBER ACTIVE VIDEO 23-262 LINE 263 (V 1) 263-265 LINE 266 266-285 BLANKING 286-525 LINE 286 (V 0) FIELD 2 (F 1) FIELD 2 ACTIVE VIDEO LINE 525 (V 0) LINE 3 Figure 7.3-8 480i Digital Vertical Timing (480 Active Lines). F and V change state at the EAV sequence at the beginning of the digital line. Note that the digital line number changes state prior to the start of horizontal sync, as shown in Figures 7.3-3 through 7.3-7. These active lines are used by the SMPTE RP-202, ATSC A/54a, and ARIB STD-B32 standards. CEA-861D (DVI and HDMI timing) specifies lines 22-261 and 285-524 for active video. IEC 61834-2, ITU-R BT. 1618, and SMPTE 314M (DV formats) specify lines 23-262 and 285-524 for active video. ITU-R BT.656 specifies lines 20-263 and 283-525 for active video, resulting in 487 total active lines per frame. 864 X 480i is a 16:9 square pixel format, while 640 X by using the 720 X 480i format, and blanking the first 480i is a 4:3 square pixel format. Although the ideal 16:9 eight and last eight samples each active scan line. Ex- resolution is 854 X 480i, 864 X 480i supports the MPEG ample relationships between the analog and digital signals 16 X 16 block structure. The 704 X 480i format is done are shown in Figures 7.3-3 through 7.3-7. SAMPLE RATE = 27.0 MHZ SAMPLE RATE = 36.0 MHZ 16 SAMPLES 21.5 SAMPLES DIGITAL DIGITAL BLANKING DIGITAL ACTIVE LINE BLANKING DIGITAL ACTIVE LINE 138 SAMPLES 720 SAMPLES 184 SAMPLES 960 SAMPLES (0-137) (138-857) (0-183) (184-1143) TOTAL LINE TOTAL LINE 858 SAMPLES 1144 SAMPLES (0-857) (0-1143) Figure 7.3-9 480p Analog-Digital Relationship (4:3 Aspect Ratio, Figure 7.3-10 480p Analog-Digital Relationship (16:9 Aspect 59.94 Hz Frame Rate, 27 MHz Sample Clock). Ratio, 59.94 Hz Frame Rate, 36 MHz Sample Clock). CHAPTER 7.3 Video signals overview SAMPLE RATE = 24.54 MHZ SAMPLE RATE = 20.25 MHZ 14.5 SAMPLES 12 SAMPLES DIGITAL DIGITAL BLANKING DIGITAL ACTIVE LINE BLANKING DIGITAL ACTIVE LINE 140 SAMPLES 640 SAMPLES 99 SAMPLES 544 SAMPLES (0-139) (140-779) (0-98) (99-642) TOTAL L