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).

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.

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Panasonic TH-50PHD5, TH50PHW5, TH-42PHD5, TH-42PHW5 Sync Process, AV/RGB/PC Input Mode Sync, Component Video Input mode Sync

TH-50PHD5, TH-42PHD5, TH50PHW5, TH-42PHW5 specifications

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