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參數(shù)資料
| 型號： | MSM7661 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | NTSC/PAL Digital Dencoder(NTSC/PAL制式數(shù)字譯碼器) |
| 中文描述： | NTSC / PAL數(shù)字Dencoder（的NTSC / PAL制式數(shù)字譯碼器） |
| 文件頁數(shù)： | 11/40頁 |
| 文件大?。?/td> | 293K |
| 代理商： | MSM7661 |
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Semiconductor
MSM7661
11/40
If the comb filter is not used, the Y/C is separated by the trap filter.
The Y/C separation circuit is bypassed by S video signal input.
In adittion, the functions of this block work only when lines are valid as image information.
The processing of CVBS signals is not made during V-blanking.
2.
Luminance Block
The luminance block removes synchronous signals from the signals containing luminance
components after Y/C separation. The signals are corrected and output as luminance signals.
The luminance signal output level gain control functions include three selectable modes such as
AGC (Auto Gain Control), MGC (manual Gain Control) + No Clamp, and MGC + Pedestal
Clamp.
In the AGC mode, the luminance level amplification is determined by comparing the depth of
SYNC with the reference value. The default is 40IRE which can be changed by the register. The
input is a sync chip clamp type.
In the MGC + No Clamp mode, the luminance signal output level is not affected by the input, and
the amplification and black level are controlled by setting the register.
In the MGC + Pedestal Clamp mode, the signal output level is clamped to the pedestal level of
the input. The signal amplification and black level are controllable from the clamped point by
setting the register.
This block can select the follwing operation modes.
1) Use of prefilter and sharp filter
Used*
Not used
These filters are used for enhancing the edges of luminance component signals.
2) Selection of aperture bandpass filter coefficient
Middle range*
High range
3) Coring range select
off*
±
4LBS
±
5LBS
±
7LBS
4) Aperture weighting factor select
0*
0.25
0.75
1.5
The profile of these signals can be corrected by coring and aperture correction.
5) Use of pixel position correction circuit
Used*
Not used
6) AGC loop filter time constant select
Slow
Factor value 1/1024n
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MSM7662 | NTSC/PAL Digital Video Decoder(NTSC/PAL制式數(shù)字視頻譯碼器) |
| MSM7702-01MS-K | Single Rail CODEC |
| MSM7702 | Single Rail CODEC |
| MSM7702-01 | Single Rail CODEC |
| MSM7702-02 | Single Rail CODEC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM7661B | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:NTSC/PAL Digital Video Decoder |
| MSM7662 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:NTSC/PAL Digital Video Decoder |
| MSM7664 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:NTSC/PAL Digital Video Decoder |
| MSM7664TB | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:NTSC/PAL Digital Video Decoder |
| MSM76H052GS-K | 制造商:ROHM Semiconductor 功能描述: |
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