User guide

VPS-2300 User Guide
1 About Crystalio
TrueLife® Enhancement
Conventional video enhancement simply boosts up
the high-frequency components of the video signal
with a ‘peaking filter’. This often leads to undesirable
artifacts (or visible ‘glitches’), which are distracting
and ruining the viewing experience.
Faroudja, on the other hand, uses its TrueLife
®
Enhancement technology to identify patterns of
transition that are the desired details in an image
such as skin texture, freckles or hair. These areas of
transition are deliberately enhanced to render the
details more visible and more lifelike. At the same
time, the technology enhances large edges to create
greater depth of perception without introducing
visible artifacts or distortion.
Film Mode Detection Technology
In 1989, Faroudja invented and patented film mode
detection, also known as 3:2 pulldown detection.
Film-originated content (where conventional film
cameras were used as opposed to digital video
cameras) that has gone through 3:2 pulldown for
conversion to NTSC (the United States television
broadcast standard) is detected and the original film
frames are recreated by blending the fields back
together.
‘Pulldown’ is the process of translating film signals to
tally with the broadcast standard. Again, such a
process often results in artifacts commonly known as
combs. Faroudja was the first to introduce “bad edit”
detection capability to detect the original film frames
within the video stream and reconstruct an accurate
image. This produces an image free from motion
artifacts with full vertical resolution. This film mode
processing is widely accepted in the industry.
Cross Colour Suppression
Cross colour is an artifact produced by imperfect
decoding of composite video. High frequency luma
(brightness) components are incorrectly decoded as
chroma (colour) signals, causing colour effects to
appear where there should be none. This problem
can be detected in many types of “busy” scenes
including tiled rooftops, herringbone patterned
clothing and leafy scenery etc. The most common
and visible cross colour artifacts are flickering,
flashing colours or rainbow patterns. The artifact can
be eliminated in still images, but is much more
complex to detect and correct in moving images.
Faroudja’s Cross Colour Suppression uses motion
detection to selectively perform the filtering in an
intelligent manner, identifying where there is no
motion in the image and using the already existing
frame memory for the chroma storage required.
Motion Adaptive Noise Reduction
Noise in an image is typically eliminated or reduced
by filtering. Filtering can be done spatially (1-D) or
temporally (3-D). Spatial filtering results in a softer
image with the details lost. Temporal filtering, without
the problem of detail loss, would however induce
smearing or ghosting of moving objects in the image
if not accurately performed. Faroudja employs
Motion Adaptive processing to reduce noise without
causing smearing.