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2. ASPECT: There are five aspect ratios that can be selected for different video signal:

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ANAMORPHIC: Scales an image so that it is displayed in the center of the screen with a 16:9 aspect ratio. 

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Standard (4:3): Scales an image so that it is displayed in the center of the screen with a 4:3 aspect ratio.   

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LETTERBOX: Enlarges an image with letterbox format to display it in full-screen format with a 16:9 
aspect ratio. The upper and lower portions of the image are cropped. Use this setting for Cinemascope 
and Vista video wide screen formats.

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WIDE: Expands an image with a 4:3 aspect ration NON-linearly along the horizontal axis to provide full 
screen display at a 16:9 aspect ratio.  

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 THROUGH : One-to-one mapping is performed without any scaling of the image. The image is 
displayed at the center of the screen. 

BEFORE: 

16:9 images (1080i, 

720p)

AFTER: 

Projects images on a full 

16:9 screen

BEFORE:

 Picture images 

with a ratio of 4:3 (480i, 576i, 

480p, 576p and PC)

AFTER: 

Projects images at 

a 4:3 ratio

BEFORE:

 Cinemascope 

and vista signals with a ratio 

of 4:3

or

AFTER

AFTER

BEFORE:

 Projects images 

with a ratio of 4:3 (480i, 576i, 

480p, 576p and PC)

AFTER: 

Expands projected 

image in horizontal direction to fit 

a full 16:9 screen

BEFORE:

 16:9 images (1080i, 

720p)

AFTER: 

Projected images are 

reduced to a half. (1080i)

AFTER: 

Projected images are 

compressed to a full screen size. 

(720p)

or