
2000
Mar
15
41
Philips
Semiconductors
Preliminar
y
specication
P
AL/NTSC/SECAM
video
decoder
with
adaptiv
e
P
AL/NTSC
comb
lter
,VBI-data
slicer
and
high
perf
or
mance
scaler
SAA7114H
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Table 9
Examples for eld processing
Notes
1. Single task every field; OFIDC = 0; subaddress 90H at 40H; TEB[80H[5]] = 0.
2. Tasks are used to scale to different output windows, priority on task B after SWRST.
3. Both tasks at 1
2 frame rate; OFIDC = 0; subaddresses 90H at 43H and C0H at 42H.
4. In examples 3 and 4 the association between input FID and tasks can be flipped, dependent on which time the SWRST is de-asserted.
5. Task B at 2
3 frame rate constructed from neighbouring motion phases; task A at 13 frame rate of equidistant motion phases; OFIDC = 1;
subaddresses 90H at 41H and C0H at 45H.
6. Task A and B at 1
3 frame rate of equidistant motion phases; OFIDC = 1; subaddresses 90H at 41H and C0H at 49H.
7. State of prior field.
8. It is assumed that input/output FID = 0 (= upper lines); UP = upper lines; LO = lower lines.
9. O = data output; NO = no output.
SUBJECT
FIELD SEQUENCE FRAME/FIELD
EXAMPLE 1(1)
EXAMPLE 2(2)(3)
EXAMPLE 3(2)(4)(5)
EXAMPLE 4(2)(4)(6)
1/1
1/2
2/1
1/1
1/2
2/1
2/2
1/1
1/2
2/1
2/2
3/1
3/2
1/1
1/2
2/1
2/2
3/1
3/2
Processed by task
A
B
A
B
A
B
A
B
A
B
A
B
A
State of detected
ITU 656 FID
0
1
0
0101010101
0
1
0
1
01
TOGGLE ag
1
0
1
0
1
0
1
0
0(7)
11
1(7)
00
Bit D6 of SAV/EAV byte
0
1
0
1
0
1
0
1
0
0(7)
11
1(7)
00
Required sequence
conversion at the vertical
scaler(8)
UP
↓
UP
LO
↓
LO
UP
↓
UP
↓
UP
LO
↓
LO
UP
↓
UP
LO
↓
LO
UP
↓
LO
↓
UP
↓
LO
↓
LO
UP
↓
UP
LO
↓
UP
↓
UP
LO
↓
LO
UP
↓
LO
↓
LO
UP
↓
UP
LO
↓
UP
Output(9)
O
OOOOOOOOOO
NO
OO
NO
OO