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3.5.1 Miscellaneous Options
This menu holds several unrelated settings.
Curtain Pattern determines what the screen will show
when there is no source picture. You have a choice of sev-
eral solid colors or the logo.
Plug and Play (EDID Enable)
For Plug and Play and EDID, see the full discussion in
“EDID: What It Is and How It Works” on page 118.
Preferred Source Detection
Analog computer video cards provide only vertical and
horizontal frequencies. Sometimes, this is not enough
information. Bay Cat X receiving such “ambiguous” signal
modes, in certain cases, could misinterpret the resolution to
be any of three different modes. For example, 1024 x 768,
1280 x 768, and 1360 x 768 all have the same respective
horizontal and vertical frequencies but represent different
aspect ratios, 4 x 3, 15 x 9, and 16 x 9. By specifying the
correct source detection mode, Bay Cat X can correctly
interpret the signal and display the incoming image in the
proper aspect ratio. The native aspect ratio of Bay Cat X is
16 x 9, and the default resolution is 1366 x 768.
HD Interlaced Content Motion
HD Interlaced Content Motion is a control you probably
won't need to touch. Here is an explanation of it.
Some video signals, most notably those made for televi-
sion, are what is known as “interlaced”. At one moment in
time, only the even number lines of image are transmitted
to the display. At the next moment (usually 1/30 or 1/25 of
a second later) the odd numbered lines are transmitted.
These two moments in time are known as fields. On CRT
television sets, the even field persisted on the phosphor
long enough so that by the time the odd field got there, our
eyes put it all together into one picture. On digital displays
such as Bobcat X, the electronics reassembles the odd and
even fields together into one image to display every sixtieth
(or fiftieth) of a second. If the image is static, such as with
computer graphics, it is quite simple to put the fields back
together. However, if the image is moving, it can cause
problems because an image will have moved from the time
the even lines arrive to when the odd lines arrive. A special
piece of electronics known as a deinterlacer can analyze
whether an image is moving or stationery and use mathe-
matical algorithms to put the two image fields together in
the best way. The Bobcat X has deinterlacer electronics to
take care of standard definition television signals. However,
it does not have deinterlacer circuitry for high definition
television (1080i). The “HD Interlaced Content Motion”
control gives the regular electronics some help in determin-
ing how to put together the two fields if you are viewing
1080i. Keeping this setting at “Normal” works best for
most images. This will assume the image has no fast
motion. The only time you will see a problem with this set-
ting is if you are at native resolution (i.e. you are using a
Baycat X or your scale mode is set to one to one on a Bob-
cat X). In that case, you may see something of a "zipper"
effect on the edge of moving objects. To get rid of this,
change the setting to "Rapid". However, if you do, you will
probably see static images flickering slightly (known as
“twittering”).
Another alternative to minimize both effects is to
keep the setting at Normal and set overscan (in the
Aspect Ratio menu) to 1%. This will turn on the scaler
and minimize the zipper effect.For more information
about the Miscellaneous options, see “Miscellaneous Set-
tings” on page 97.
Miscellaneous
Curtain Pattern Logo
Plug and Play (EDID Enable)
Preferred Source Detection 16 x 9
HD Interlaced Content Motion Normal