Panasonic TH-42PHD5 User Manual
21
Sync Process
Figure 19
The vertical and horizontal sync signal paths are slightly different depending on
the Source signal.
AV/RGB/PC Input Mode Sync
The vertical and horizontal sync signals generated by the input device are
applied to connector D3 or D2 to a Sync switch (IC3002). IC3002 outputs the
vertical and horizontal sync signals. The signals are inverted by IC8002 and then
applied to a sync processor (IC9451). IC9451 mixes the image sync signal with
the OSD sync signal prior to output to the format converter (IC9200).
applied to connector D3 or D2 to a Sync switch (IC3002). IC3002 outputs the
vertical and horizontal sync signals. The signals are inverted by IC8002 and then
applied to a sync processor (IC9451). IC9451 mixes the image sync signal with
the OSD sync signal prior to output to the format converter (IC9200).
Component Video Input mode Sync
The Y video signal is applied to an input switch (IC3001). The Sync on green
signal is amplified by Q8001 and applied to a sync separator (IC8001). IC8001
outputs the Vertical and Horizontal sync signals. From that point on the sync path
is the same as the RGB/PC input mode.
The A/D converter (IC9007) shapes the analog sync signal to clean digital pulses
prior to input to the format converter.
signal is amplified by Q8001 and applied to a sync separator (IC8001). IC8001
outputs the Vertical and Horizontal sync signals. From that point on the sync path
is the same as the RGB/PC input mode.
The A/D converter (IC9007) shapes the analog sync signal to clean digital pulses
prior to input to the format converter.