DVDO iScan Pro Progressive Scan Display Interface 用户手册

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All of the processing steps in the signal chain between your video source and the display influence 
the quality of the image. 
 

The following are brief descriptions of the series of steps shown in Figure 3. 
 
1.  A signal is generated by a source (DVD player, Laser Disc, VCR, Cable Box, DSS Receiver…) 
2.  The signal is converted from analog to digital. 
3.  The digital video signal is decoded from NTSC composite or S-Video (Y/C) to its basic components 

of Y, Cr and Cb. 

4.  The component signal is converted from interlace to progressive by the SiI503 chip.  
5.  The progressive signal is converted back to analog RGB or YPbPr and sent over a cable to the 

display. 
 
The iScan Pro processes steps 2, 3, 4, and 5, but the final quality of the displayed image depends 
both on the quality of the source and the display device.