amplified, now the audio signal is divided into two, one is outputted to earphone
jack directly, the other is inputted into
class D audio power amplifier R2A15112
to be amplified and then outputted to speakers.
4、 PC/YPbPr signal flow
After processed by impedance matching, PC/YPbPr video signal is inputted
into main chip MSD209 to be processed by modules of “A/D transform, digital
video processing and OSD addition”, then LVDS signal is outputted to drive LCD
panel.
PC/YPbPr audio signal is processed by circuits of “voltage divided,
impedance matching and
AC coupling”, then inputted into main chip MSD209 directly
for acoustic effect processing and volume control, afterwards the audio signal is
inputted into left and right sound tracks of earphone amplifier BH3547F directly to be
amplified, now the audio signal is divided into two, one is outputted to earphone jack
directly, the other is inputted into class D audio power amplifier R2A15112 to be
amplified and then outputted to speakers.
5、 HDMI signal flow
HDMI video signal is inputted into main chip MSD209 to be processed by
modules of “digital video processing and OSD addition”, then LVDS signal is
outputted to drive LCD panel.
HDMI audio signal is decoded into Dolby AC-3 signal or MPEG multi-sound-
track digital audio signal by inner decoder of main chip MSD209, then one is
outputted through SPDIF directly; after the process of “sub-transform and DAC”,
the other is outputted as analog audio signal
, the analog audio signal is inputted into
the rear part of main chip MSD209 for acoustic effect processing and volume control,
then inputted into left and right sound tracks of earphone amplifier BH3547F
respectively to be amplified, now the audio signal is divided into two, one is outputted
to earphone jack directly, the other is inputted into class D audio power amplifier
R2A15112 to be amplified and then outputted to speakers.
6、 Brief instruction on unit functions
MPEG-2 MP@HL、H.264 Main and High profile up to Leve4.0 Decoding
MPEG、
Dolby Digital（AC-3）、AAC Digital Audio Decoding
3D comb filter
Wide-range power supply、low consumed power in standby mode（≤1W）
Class D audio power amplifier with HI-FI acoustic effect output
High quality transformation from interleaved scanning to progressive scanning
Realizing integrative functions really
- build integration
- integrative TUNER（integrating analog with digital）
- integrative searching-program function
- integrative OSD interface
Main parts of the unit：
40 inch LCD panel（1920x1080）
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