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DM Basic Signal Block
Figure 7-9 shows a Basic Block Diagram of the Signal
Processing circuitry in the DM Module. Only a simple
Block Diagram is necessary since the DM Module is a
replaceable component.
There are two main signal sources for the DM Mod-
ule:
1) ANT-DTV Input
2) 1394 Jacks.
Signals from ANT-DTV input are processed by the
ATV Tuner and Demodulation circuitry. The output
of the Demodulator is the HD Transport Data Stream.
It is directed through the System Interface circuitry
to an MPEG Decoder. The Decoder outputs main
picture analog RGB, and also Separate Y and C sig-
nals for the Monitor Output circuitry.
The other signal sources for the DM Module are the
1394 Jacks. The signal input to the 1394 Jack would
be a compressed digital data stream from a 1394
Compatible Digital Device in a Home Theater Sys-
tem. This signal is routed through the System Inter-
face circuitry to the MPEG Decoder. The output of
the Decoder is main picture analog RGB.
7-10
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