Copyright©2007 LG Electronics. Inc. All right reserved.
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LGE Internal Use Only
Only for training and service purposes
VIDEO AND AUDIO SIGNAL FLOW CHART
1. Digital RF(ATSC, QAM) Video signal flow chart
The digital RF signal(ATSC/QAM) received in the input terminal of the tuner is converted to the base band signal in
the tuner(IC105) to send out 8 bit transport stream.
This signal is transferred to the FPGA chip of IC901. FPGA chip decrypts the TS data so that it can be decoded by
the DTV decoder in the next terminal.
The TS data decrypted by IC901 is decoded by the video decoder of DTV controller of IC401 and converted to the
LVDS signal.
The LVDS signal is transferred to the LCD panel through the P503 connector to be displayed on the LCD panel.
*Tuner(ATSC/QAM) Video signal flowchart
RF Signal Input
(ATSC/QAM)
LCD Panel
Unscrambled
TS Data
TS Data
LVDS Signal
IC105
TUNER
IC901
ALTERA FPGA
IC401
DTV Controller
P503
LVDS Connector
