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Working principle analysis
RF signal is inputted to TUNER201 from antenna, after processed by Hi-amplifier and
mixer, DIF signal is created and then sent to main chip N102 (RTD2933H).
Video & audio signals of AV, YPbPr, VGA, HDMI and USB are sent to main chip N102
(RTD2933H) directly.
Main chip N102 (RTD2933H)is a special large scale IC with full functions, such as HDMI
interface processing, video decoding, video switch selection, A/D & D/A conversion,
interlaced / successive processing, mode conversion, OSD and low voltage difference
output processing, etc., furthermore, it also includes functions like audio selection &
processing, MCU, and so on; external video signal is processed by main chip N102
(RTD2933H), then 4 pairs of difference signals and one pair of clock signal are outputted
to drive LCD panel; external audio signal is processed by main chip N102 (RTD2933H) ,
then be outputted to sound amplifier to be amplified and then sent to speakers.
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