Clarity Bay Cat X SN-4620-1080 Manuel D’Utilisation

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3.5.1 Miscellaneous Options

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.

For Plug and Play and EDID, see the full discussion in 

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 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.