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參數(shù)資料
| 型號(hào)： | KB9224 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | VIDEO-CD 2ND GENERATION |
| 中文描述： | 視頻-環(huán)糊精第二代 |
| 文件頁數(shù)： | 51/55頁 |
| 文件大?。?/td> | 450K |
| 代理商： | KB9224 |
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VIDEO-CD 2ND GENERATION
KB9224
51
13.8 Rf Equalize Circuit
The AGC block maintains a steady Rf Peak to Peak level, and has a built-in 3t gain boost function. It detects the Rf
Envelope and compares it with the standard voltage to perform comparison gain adjustment.
The received Rf output stabilizes the Rf Level to 1vp-p, and this output is applied as the EFM Slice input.
13.9 ATSC
The Detect Circuit for the Tracking Gain Up (about Shock) is composed of a Window and a Comparator.
13.10 Focus Servo
If set to phase compensate the Focus Servo Loop, the Focus Servo Loop is Muted when Defect is H. At this time,
the Focus Error signal is integrated by the 0.1 uf Capacitor to be connected to the Fdfct block, and the 470
resistance. It is then output through the Servo Loop. Therefore, during Defect, the Focus Error output is Held as the
Error value before the Defect Error. The frequency which maximizes the Focus Loops phase compensation is
changed by the Fset block. If the resistance is 510 kohm, the maximum frequency is 1.2 kHz, and is inversely
proportional to the resistance.
When in Focus Search, Fs4 is On to intercept the Error signal. The Focus Search signal is output through the Feo
block. When Focus is On, Fs2 is On, and the Focus Error signal input through the Fe2 block is output to the output
pin through the Loop.
VCA
Equalize
6
4
1
CAGC
ARF
EQI
-
+
-
+
BPF
51
Tracking Gain
Up
ATSC
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