AYRE DX-5DSD - Manual (Page 74)

display the entire frame simultaneously and with a
small fraction of “dead time”. However a home
video display operates under different conditions
and normally uses a refresh rate of 60Hz in NTSC
countries (North America and Japan) to provide
smooth motion.
Since 60Hz is not an even multiple of the 24Hz rate
used in theatrical movies, the frame rate must be
multiplied by 2.5. This is achieved by displaying
one frame twice and the next frame three times, a
process called “2:3 pulldown”.
This uneven display of the original frames can cause
a slight jerkiness to motion displayed in the movie,
called “judder”. To provide smoother rendition of
motion, some displays can operate at an even
multiple of 24Hz, for example 72Hz. If fed the
original 24Hz signal, they simply show each frame
three times in succession.
The available options are:
• Auto – Video encoded in 24Hz frame rate will
be output as 1080p 24Hz if the TV informs the
player that it can support the 1080p24 signal.
• On – Video encoded in 24Hz frame rate will be
output as 1080p 24Hz without regard to
whether the TV can support the 1080p24 signal
or not. Please note that if the TV cannot
support 1080p24, selecting this option will
result in no video.
• Off (default) – Video encoded in 24Hz frame
rate will be converted to 60Hz (“TV System” set
to NTSC) or 50Hz (“TV System” set to PAL).
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