NEC PX-50XM4 series Service Manual page 501

Operational descriptions

Main side
• The chroma signal entered from the DVD/HD2 is output from the out1 side through the Video/sync SW.
• The signal output from out1 passes through the LPF1 and is entered in the A/D1 where it is digitized.
• The digitized signal input is entered in the digital signal processing block, where various processing of I-P conversion, scaling, γ correction, and others is carried
out.
Sub side
• The PC signal entered from the RGB3 is processed in the TMDS receiver for the conversion from the serial digital signal to the parallel digital signal.
• The processed signal input is entered in the digital signal processing block, where various processing of scaling, γ correction, and others is carried out.
Dual screen synthesis
• The signals processed in Main and Sub respectively are then synthesized in the digital signal processing block.
• After passing through these processes, the signal is entered in the LVDS transmitter and the LVDS signal is generated there. This signal is then applied to the
module.
CONFIDENTIAL
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