1
0
1, 1, 1
1, 1, 0
Active Field
Active Field
Time
1, 0, 1
1, 0, 0
{x, y, z} = {F, V, H}
1, 1, 1
1, 1, 0
0, 0, 1
0, 0, 0
0, 1, 1
0, 1, 0
F
ie
ld I
D
V
S
Y
N
C
EAV
SAV
Active Field
Active Field
time
Field ID
Internal Modules
142
SPRUHI7A – December 2012 – Revised June 2016
Copyright © 2012–2016, Texas Instruments Incorporated
High-Definition Video Processing Subsystem (HDVPSS)
shows End-of-Active-Video (EAV) and Start-of-Active-Video (SAV) code words added to a
video transmission. The period between the EAV and SAV is equivalent to Horizontal Blanking. The period
between the SAV to the next EAV is active video or vertical blanking.
In the BT.656 or BT.1120 embedded code word scheme, three bits of the EAV/SAV code word are
important: F (field), H (horizontal blanking), and V (vertical blanking).
Figure 1-83. Code Word Embedded Video Format
shows the values of F, V, and H flags at different locations in the picture. The Field flag
represents the state of the Field ID for the picture. For progressive frames, F is always ‘0.’ The V flag
specifies vertical blanking areas. The H flag specifies horizontal blanking portions of the picture.
Figure 1-84. Digitized Video with F, V, and H Flags in EAV/SAV