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參數(shù)資料
| 型號： | AK8811 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | NTSC/PAL Digital Video Encoder |
| 中文描述： | NTSC / PAL數(shù)字視頻編碼器 |
| 文件頁數(shù)： | 18/36頁 |
| 文件大?。?/td> | 377K |
| 代理商： | AK8811 |
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ASAHI KASEI
[AK8811/12]
Rev.1.1 2000/01
18
Closed Caption and Extended Data
AK8811/12 supports both Closed Captioning and Extended Data. They are controlled “ON”
or ”O(jiān)FF” respectively by [ Video Process 2 Register(02H) ]. Each data consists of 2 continuous
bytes register( Closed Caption R (16H,17H) ), and it is recognized as the data is renewed when
the second byte(17H register) is written in the register. After the data is renewed, AK8811/12
encodes Closed Captioning and Extended Data at the designated line. If the data isn’t renewed,
AK8811/12 outputs “ASCII-NULL” code. The data is supposed as Odd Parity and 7 bit US-
ASCII code. Host should provide a parity bit.
*In PAL encoding mode, AK8811/12 outputs them at the same timing and same pattern as NTSC.
*The line where Closed Captioning data is encoded is as follows.
525/60 System (SMPTE)
625/50 System (CCIR)
Closed Caption
21 Line default
21 Line default
Extended Data
284 Line default
334 Line default
Fig. 4 Closed Captioning Wave form
S
T
A
P
A
R
I
T
Y
P
A
R
I
T
Y
10.5
±
0.25uS
12.91 uS
10.003
±
0.25uS
27.382 uS
( 33.764 uS )
61 uS
240
±
48nsec
RISE/FALL TIMES
(2T BAR SHAPING)
TWO 7-Bit+PARITY
ASCII Characters
(DATA)
7 Cycles of
0.5035MHz
(Clock RUN-IN)
50
±
2IRE
40IRE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK8812 | NTSC/PAL Digital Video Encoder |
| AK93C10A | 16K / 32K / 64KBIT SERIAL CMOS EEPROM |
| AK93C95A | MATRIX ITEMS |
| AK93C95AF | 16K / 32K / 64KBIT SERIAL CMOS EEPROM |
| AK93C10AF | 16K / 32K / 64KBIT SERIAL CMOS EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK8812 | 制造商:AKM 制造商全稱:AKM 功能描述:NTSC/PAL Digital Video Encoder |
| AK8813 | 制造商:AKM 制造商全稱:AKM 功能描述:NTSC/PAL Digital Video Encoder |
| AK8813/14VGP-L | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:NTSC/PAL VIDEO ENCODER, LOWCOS |
| AK8813/14VQP | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:NTSC/PAL VIDEO ENCODER, LOWCOS |
| AK8813P | 制造商:AKM 制造商全稱:AKM 功能描述:NTSC/PAL Digital Video Encoder |
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