Daewoo DV- K584N-SJ, Technical Manual

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51
31 8 6
3
18
18 16
5
28
IC301 IC151
LINE
JACK
INPUT SELECT
TMI
OSD
ICS01
TMI
LINE JACK
VIDEO
OUT
AGC AMP
QV/QH INSERT
VIDEO AMP
EE MODE PROCESS
B. Color Signal Processing
The FM signal input to pin 11 of IC301, which is originally come from pin 10 of ICA01, passes through 1.3MHz LPF to pass only
629KHz color signal down-converted in record mode.
ACC (Automatic Color Control) AMP stabilized the color signal.
The stabilized signal is input to main converter and mixed with the 4.21MHz signal come from sub-converter.
Its output is 4.21MHz±629KHz. The mixed signal is input to 3.58 BPF in order to pass 3.58MHz color signal only.
In Comb Filter, the signal 1H-delayed by CCD IC is added to the original video signal.
During this process, crosstalk between adjacent tracks is eliminated.
The signal out of comb filter is input to Burst Deemphasis which reduces the 6dB boosted burst level (in record mode).
The reduced signal is mixed with luminance signal, and the mixed signal is output to pin 39 of IC301 through Video Amp.