GUIDE TO INSTALLATION AND OPERATION
XVP-801i |
27
Card System Config
: To enable the audio bus, use the pull-down box and select your system’s configuration.
Selecting
Video
restricts available audio signals to audio channels embedded in the HD/SD input signal;
Video / A1
or
Video / A1 / A2
adds the audio channels incoming from the installed audio cards detected.
Figure 3.13
ABUS group
The
De-Interlacer
group
The De-Interlacer group provides access to four different processing functions of the XVP-801i, grouped into
two subsections.
Film Processing Sub-section
3:2 Detection:
this is a pull-down menu with two options – AUTO and OFF
AUTO
-enables a processing mode which detects the presence of film-sourced material in 525/59 Hz
signals. Described in television terms, film contains 24 frame-per-second progressively scanned
images. Conversion to 59.94 Hz video is accomplished by running the film 0.1% slow, and scanning
alternate film frames three times and two times, creating an interlaced video image at 59.94 fields
per second, in which the first three fields come from the first film frame, the next two fields from the
second film frame, the next three from the third film frame, etc. This is called 3:2 pulldown, as it was
originally accomplished using a telecine projector with a mechanism that pulled frames into the gate
in this pattern. The resulting video signal meets video system standards, but contains redundant
information – that third field derived from every second film frame – and is different from standard
video in that the odd and even fields of each image contain information that was originally time-
coincident. Image scaling is best performed on a progressively-scanned image, so one is usually
constructed from the interlaced image by an interpolation process called de-interlacing prior to
