Sony NSZ-GT1 - Manual (Page 71)

Screen format
Set the display configuration for a 4:3 aspect ratio picture on a 16:9 aspect ratio screen TV.
Press Fn + 1 and select [Picture & sound] - [Screen format].
Notes
The change of this setting will become effective after the Disc Player application restarts.
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YCbCr/RGB (HDMI)
Set the color matching method.
Press Fn + 1 and select [Picture & sound] - [YCbCr/RGB (HDMI)].
Note
If the color is not displayed correctly on the TV when you select [Auto], try [RGB].
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Noise reduction
Allows you to improve the picture quality by reducing the noise in video signals.
Press Fn + 1 and select [Picture & sound] - [Noise reduction].
Select [High] to reduce the noise when it is intrusive. Select [Off] if you do not use this function.
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Screen saver
Set the time at which the unit launches the screen saver on your TV when no operation is carried
out.
Original: Select this when connecting to a TV with a wide
mode function. Displays a 4:3 screen picture in
16:9 aspect ratio even on a wide-screen TV.
Fixed aspect ratio:
When using a TV without a wide mode function,
the picture size fits the screen size with the
original picture aspect ratio.
Auto:
Automatically detects the connected TV type, and
switches to the matching color setting.
YCbCr (4:4:4):
Outputs YCbCr 4:4:4 video signals.
RGB:
Outputs RGB video signals.
NSZ-GT1 71