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參數(shù)資料
| 型號： | ADV7312KST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | Multiformat 11-Bit HDTV Video Encoder |
| 中文描述： | COLOR SIGNAL ENCODER, PQFP64 |
| 封裝： | MS-026BCD, LQFP-64 |
| 文件頁數(shù)： | 61/84頁 |
| 文件大?。?/td> | 975K |
| 代理商： | ADV7312KST |
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REV. 0
ADV7312
–61–
APPENDIX 2—SD WIDE SCREEN SIGNALING
[Subaddress 59h, 5Ah, 5Bh]
The ADV7312 support wide screen signaling (WSS) conforming
to the standard. WSS data is transmitted on Line 23. WSS data
can be transmitted only when the device is configured in PAL
mode. The WSS data is 14 bits long, and the function of each of
these bits is shown in Table XIX. The WSS data is preceded by
ACTIVE
VIDEO
RUN-IN
SEQUENCE
START
CODE
500mV
11.0 s
38.4 s
42.5 s
W0
W1
W2
W3
W4
W5
W6
W7
W8
W9
W10
W11
W12
W13
Figure 65. WSS Waveform Diagram
a run-in sequence and a start code; see Figure 65. If SD WSS
[Address 59h, Bit 7] is set to a Logic 1, it enables the WSS data
to be transmitted on Line 23. The latter portion of Line 23
(42.5
μ
s from the falling edge of
HSYNC
) is available for the
insertion of video.
It is possible to blank the WSS portion of Line 23 with
Subaddress 61h, Bit 7.
Bit
Description
Bit 0–Bit 2
Bit 3
B0, B1, B2, B3 Aspect Ratio
0
0
0
1
1
0
0
0
0
1
0
0
1
1
0
1
0
0
1
0
1
0
1
1
0
1
1
1
1
1
1
0
1
1
1
0
B4
0
1
Aspect Ratio/Format/Position
Odd Parity Check of Bit 0 to Bit 2
Format
4:3
Full Format
14:9
Letterbox
14:9
Letterbox
16:9
Letterbox
16:9
Letterbox
>16:9
Letterbox
14:9
Full Format
16:9
N/A
16:9
Position
N/A
Center
Top
Center
Top
Center
Center
N/A
Camera Mode
Film Mode
Table XIX. Function of WSS Bits
Bit
Description
B5
0
1
B6
0
1
B7
B9 B10
0 0
1 0
0 1
1 1
B11
0
1
B12
B13
Standard Coding
Motion Adaptive Color Plus
No Helper
Modulated Helper
Reserved
No Open Subtitles
Subtitles in Active Image Area
Subtitles out of Active Image Area
Reserved
No Surround Sound Information
Surround Sound Mode
Reserved
Reserved
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