Table of Contents
Advertisement
3DQDVRQLF
2)CHROMINANCE SIGNAL PROCESSING (PB)
Pre-amp
15
15
7th pin
Kill
LPF
NAP
BPF
The down converted chrominance signal is obtained from PB ENVE signal by LPF first.
And then the signal is up-converted to 4.43MHz by the MAIN CONVERTER.
The redundant harmonics is filtered out by the BPF, and then the signal is applied to the CCD IC to reduce
the chrominance crosstalk.
The NTSC PLAYBACK is possible on PAL/SECAM SYSTEM by the NAP circuit, the activation of which is
determined by GROUP 7, MSB 7-8bits.
The signal is then applied to Color Noise Canceller and mixed together with the luminance signal.
LPF
AGC Amp.
52
Amp.
46
45
CNC
Chrominance Signal Processing (Playback)
Phase Comp.
13
2H Delay
(LC89978M)
Y/C Mix
44
BPF2
BPF1
1
50
3
48
Advertisement
Table of Contents
