HP LD4245tm 41.92-inch Interactive LED Digital Signage Display - Manual (Page 36)

16:9 : This selection will allow you to adjust the picture horizontally, in linear proportion, to fill
the entire screen (useful for viewing 4:3 formatted DVDs).
Just Scan : This selection will allow you to view the best quality picture without loss of the
original picture in high resolution image.
NOTE: If there is noise in original picture, you can see the noise at the edge.
1:1 : The original’s aspect ratio is not adjusted. (Only Display Port PC, HDMI PC, RGB PC)
26 Chapter 5 Using the display