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BT.656 Video Display Mode
SAV and EAV codes are identified by a
The typical values for H, V, and F on different lines are shown in Table
F and V are only allowed to change at EAV sequences. The EAV and SAV sequences must occupy the first four words and the last four words of the digital
HBLNKSTOP.
Table 4-2. BT.656 Frame Timing
Line Number |
|
|
| |
625/50 | 525/60 | F | V | Description |
1 | 1 | Vertical blanking for field 1, EAV/SAV code still indicates field 2. | ||
0 | 1 | Vertical blanking for field 1. Change EAV/SAV code to field 1. | ||
0 | 0 | Active video, field 1. | ||
0 | 1 | Vertical blanking for field 2, EAV/SAV code still indicates field 1. | ||
1 | 1 | Vertical blanking for field 2. Change EAV/SAV code to field 2. | ||
1 | 0 | Active video, field 2. | ||
Figure 4-11. Digital Vertical F and V Transitions
525 lines/60 Hz
625 lines/50 Hz
Line 4 
Field 1 (F = 0)
Line 266
Field 2 (F = 1)
Line 3 
Blanking
Optional blanking
Image: Field 1
Blanking
Optional blanking
Image: Field 2
H = 0 (SAV)
1(V = 1) | Line 1 | ||
|
| ||
10 (V = X) |
|
| |
20 (V = 0) | Field 1 | ||
|
| ||
|
| (F = 0) | |
264 | (V = 1) | Line | |
273 | (V = X) | 313 |
|
|
| ||
283 | (V = 0) | Field 2 | |
|
| (F = 1) | |
525 | (V = 0) |
|
|
| Line 625 |
| |
|
| ||
Blanking
Image: Field 1
Blanking
Image: Field 2
Blanking
H = 0 (SAV)
1(V = 1)
23 (V = 0)
311 (V = 1)
336 (V = 0)
624 (V = 1)
625 (V = 1)
H = 1 (EAV)
Line Number | F | V |
1 | 1 | |
0 | 1 | |
0 | 0 | |
0 | 1 | |
1 | 1 | |
1 | 0 |
100Video Display Port
|
| H = 1 (EAV) |
|
|
|
|
H | H |
|
|
| H | H |
(EAV) | (SAV) | Line Number | F | V | (EAV) | (SAV) |
1 | 0 | 0 | 1 | 1 | 0 | |
1 | 0 | 0 | 0 | 1 | 0 | |
1 | 0 | 0 | 0 | 1 | 0 | |
1 | 0 | 1 | 1 | 1 | 0 | |
1 | 0 | 1 | 0 | 1 | 0 | |
1 | 0 | 1 | 1 | 1 | 0 |
SPRUEM1
