ADS Technologies HDUP-1500 - Manual (Page 21)

HDTV UpConverter 21
English
Functions
Changing Aspect Ratio with View Mode
The HDTV UpConverter has the ability to convert the aspect ratio in several ways as
explained below.
Press the View button to cycle through the available format settings
Display of WideScreen content on 16:9 screen
• Anamorphic (Wide Screen) – Display Wide Screen movie format on 16:9
displays – wide screen movies are “horizontally squeezed” prior to DVD
mastering. On DVD playback TV scaling must support horizontal zoom to
recover aspect ratio for display on 16:9 wide screen TV. If the TV is 4:3 it will
automatically scale to Letterbox format.
• Not all WideScreen DVD’s are the same. There are several WideScreen aspect
ratios such as 1.85:1 and 2.35:1 also known as “Scope”. A movie with the
aspect ratio of 1:85:1 will exactly fi ll a 16:9 screen. Scope (2.35:1) will have
narrow black bars at the top and bottom of the screen to allow for the wider
aspect ratio of Scope.
Display of 4:3 content on 16:9 screen
• Panoramic – zooms center panel of 4:3 and non-linear zoom of side panels.
Can cause distortion along scene periphery
• Pillar box - scales/zooms and frames the 4:3 image in the center of screen with
vertical black bars on sides of 16:9 screen
• Expand – zooms 4:3 input to fi ll the 16:9 display without regard for aspect ratio
Display of widescreen source on 4:3 display
• Letterbox –– shrinks (scales) input and surrounds top and bottom with black bars
• Pan-scan and crop – selects a region of interest (area of action) in the wide-
screen source then crops, scales and displays 4:3 image with correct aspect ratio
• Expand – shrinks (scales) wide screen input to fi t 4:3 without regard to aspect
ratio
Selecting De-Interlacing Method with Film Button
The HDTV UpConverter has the capability to use several different de-interlacing techniques
depending upon the characteristics of the video being processed. The front panel of the
UpConverter will display the Film mode process being used at any one time. These are
displayed as: AFM, SM, VT, GFX.