BroadBand reference Guide - Blonder Tongue Laboratories Inc.

AQD - ATSC/QAM Demodulator
PICTURE SHAPE:
The AQD operator can adjust the picture shape to the desired
setting for converting 16:9 images to 4:3 images as required for
traditional television ratio viewing.
(The Smart Zoom 2 setting is recommended in most
applications)
• FULL displays the entire picture while stretching vertically to fit
the screen and may present with black bars at the sides
• LETTER BOX displays the entire picture image and
presents with black bars on top/bottom and left/right to fit
the screen
• ZOOM 1 has a vertical/horizontal cut with black bars
• ZOOM 2 has a vertical/horizontal cut without black bars
• SMART ZOOM 1 is a modified version of Zoom 1 to adjust to
differences in the picture shape data sent by a broadcaster
• SMART ZOOM 2 expands the image to fit the screen while
cropping some images on the left/right and presents without
black bars
➣ NOTE: See Appendix B for additional details on picture shape
(Screen Aspect Ratio).
If the incoming signal is 4:3 Format, the unit will display a warning
message to alert the operator that no effect will be made by
changing the picture shape. The change will still be permitted, but
is not recommended.
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