ES DVD Players 2005, Version 4.0 Page 14
Pixel-by-Pixel Active I/P conversion and interlaced video origination Many of today's DVDs feature concert videos, documentaries, current
events, sports, nature footage and other subjects originally captured on
interlaced video. For this reason, any high-end progressive scanning system
must solve the problem of motion artifacts for footage shot on video. Video
based I/P conversion creates new pixels from existing information. For example,
to enable progressive scan output for a field of odd scanning lines, the player
must create the pixels that compose all the even scanning lines. Unfortunately,
this can result in motion blur. Horizontal lines in the scene can flicker on and off.
Other areas can suffer from an unnatural shimmer.
Time sequence
Scanning
lines
ODD
current
EVEN
future
EVEN
Past 1
ODD
Past 2
EVEN
Past 3
I/P conversion of video originated material. The red pixel, on an even
scanning line needs to be created for the current field of odd scanning
lines. If not done properly, this can result in zipper-like edges on
moving objects, line flicker and unnatural shimmering.
Sony's Pixel-by-Pixel Active I/P conversion overcomes these problems
with built-in motion detection and two distinct video conversion algorithms: one
for still objects, another for moving objects. As with film origination, the
algorithms are applied separately for each individual pixel. So both can be
applied to different parts of any given scene!