Down Conversion Option (Oc-5660-Dwn); 4:3 Letterbox; 4:3 Center Cut; 4:3 Stretch To Fill - Lynx P VD 5660 D Reference Manual

P VD 5660 Reference Manual. Rev 1.3
Down Conversion Option
(OC-5660-DWN)
With the addition of this option basic down conversion capability (HDTV to SDTV) can be
added to the module (2 instances are required to provide two internal channels of down
conversion). These are internal resources which can be routed to any input signal and
any of the four available outputs. Modes of operation are described below.

4:3 Letterbox

This takes the 16:9 aspect ratio of the input HD signal and fits it into the 4:3 SD aspect
ratio screen with black bars at the top and bottom of the image.

4:3 Center Cut

This mode cuts the center portion of the 16:9 input signal and fills the 4:3 SD aspect ratio
screen.

4:3 Stretch to Fill

This mode takes the 16:9 input signal and distorts (vertically stretches) the image to fit
the available 4:3 SD aspect ratio space.
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