ViewSonic N4261w-1M Service Manual page 17

Unified Memory Block Diagram
Stream Decoder
With the built-in Transport Stream Demultiplexing Processor (TSP), the PWM2030 supports bitstream
input in TS format. The TSP can separate the TS into audio and video PES, analyzing the PES
header, and transferring the PES to the audio and video decoders. The TSP can also transfer any
data from the input stream to external memory.
Stream Decode Block Diagram
Video/Audio Signal Output and External Signal Mixing
Video data decoded by the VDEC (Video Decoder ) is graphically processed (overlaid) by the DPG
( . Digital video signals are directly output from the DPG.
Display Picture Generator )
The audio signals decoded by the AUDIO are output as digital data to the externally connected DA
converter. The digital data output is also compatible with the SPDIF format output.
The PWM2030 can externally input both audio and video digital data. The PWM2030 has a function
which mixes the input data internally then outputs them.
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