-8-
F7YLV
2) 100Hz Normal scan
odd field
even field
odd field
even field
odd field
Signal
A
B
C
D
E
100Hz scan field
o
e
o
e
o
e
o
e
o
e
Display field
A
A
B
B
C
C
D
D
E
E
* e = even, o = odd field
The display field picture information on the normal scan is made simply by reading out each field
data stored in the field memory with double scanning frequency repeatedly.
SAA4977H and SAA4991WP are controlled via IIC bus. The CPU of the TV sends the control
data to SAA4977H to control the display mode. The equipped micro-computer in SAA4977H
receives external commands via IIC bus and controls SAA4991WP to change the operation
through the SNERT-bus.
The system clock is 32MHz, f=fH x 1024 x 2
NTSC : 32.223776MHz
PAL : 32.000000MHz
Y
0
Y
1
Y
2
Y
3
Y
4
1H
1024 sampling
sampling clock=16MHz=1024/1 horiz.
Y
0
Y
1
Y
2
Y
3
Y
4
R-Y
0
B-Y
0
B-Y
1
B-Y
2
B-Y
3
B-Y
4
R-Y
4
R-Y
3
R-Y
2
R-Y
1
(R-Y
0)'
(B-Y0)'
Write
Time divided multiplex
Y
0
Y
1
Y
2
Y
3
Y
4
(R-Y
0
)'
(B-Y
0
)'
(R-Y
4
)'
(B-Y
4
)'
(R-Y
8
)'
Y
5
Y
6
Y
7
Y
8
Y
9
R-Y
0
B-Y
0
R-Y
2
B-Y
2
R-Y
4
R-Y5
B-Y4
R-Y
7
B-Y
7
R-Y
9
R-Y
1
B-Y
1
B-Y
3
R-Y
3
B-Y
6
R-Y
6
B-Y
8
R-Y
8
B-Y
5
B-Y
9
1H
1024 sampling
1024 sampling
Double
Scan
Converting
sampling clock=32MHz=2048/1 horiz.
Read out in double clock
(a) (b)
(c)
Y
R-Y
B-Y
Y
R-Y
B-Y
Fig.-9
Summary of Contents for CE32WH3-F
Page 35: ... 35 F7YLV 17 20 21 5 19 2 16 15 18 4 11 ...
Page 68: ...MAIN BOARD CIRCUIT SIDE MAIN BOARD COMPONENT SIDE ...
Page 79: ......
