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7700 MultiFrame Manual
7710UC-HD HD UpConverter
6.5.1. Setting the Deinterlacer Mode
De-interlacing is used in order to restore motion dependent elements to their correct positions in the raster
prior to upconversion. In interlaced standard definition television signals, the second active line of the
picture commences one field time after the start of the first active line 1. Any significant movement on line
2 will be displaced in time, because of the delay in scanning field 2 after the scanning of field 1 has been
completed. This will cause motion related artifacts. For interlaced material, it is therefore desirable to
provide compensation for horizontally and vertically displaced motion. Selecting the frame based mode of
the upconverter enables these corrections. In the frame based mode, the signal is de-interlaced and both
horizontal and vertical motion adaptive interpolators are employed to correct the motion displacement. The
de-interlacing process converts each field into a full progressive image before upconversion. The
upconverted signal is subsequently re-interlaced if required into the new HDTV output format, with
significantly reduced motion artifacts.
Deinterlacer
Deinterlacer Mode
Field
Frame
6.5.2. Setting the Freeze Frame Threshold
Deinterlacer
Freeze Frame
Threshold
16
0 to 31
6.5.3. Setting the Noise Reduction
Two controls allow you to control the deinterlacer noise reduction.
Deinterlacer
Noise Reduction
Resolution
1
0 to 7
7710UC-HD-18
With this control, you can set whether the module will perform field or frame
based down conversion.
In Field mode the upconverter works on a field by field basis. This mode is
recommended for 3:2 pulldown content on interlaced video formats but
gives a softer vertical up conversion. This mode is applicable to interlaced
input video formats only. If Field mode is selected for progressive input
video formats the up-converter will operate in Frame mode. Currently Field
mode is not supported
In Frame mode the upconverter works on a complete frame basis thus
providing a crisper image. It is a good choice for interlaced images that do
not contain 3:2 pulldown or for progressively scanned video. This mode is
the only mode available for progressive input video formats.
With this control, you can set the number of frames before frozen/missing
video is detected.
With this control, you can set the resolution for the Noise Reduction Level
control. Larger numbers mean coarser steps in the level control.
Revision 1.3
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