Dream Vision DreamScaler4, Руководство пользователя

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5.0 THEATRE MODE
R699761 - DreamScaler 4 User Manual 25
The Aspect Ratio is the width divided by the height. The Frame of a picture is the whole picture projected, that
includes the vertical or horizontal black masking. The Active part of a picture is the effective portion of the Frame.
Examples of 16:9 video sources with different Active AR:
The following sources are considered as 16:9 Frames, and when the Active AR is larger than 1.78, the content is
generally letterboxed into a 16:9 picture.
• DVD 16:9 compatible also called ‘Anamorphic 16:9’
• HDTV programs (720p, 1080i)
• Blue Ray Disc, HD-DVD (1080p24, 1080p60)
16:9 Frame AR and variable Active AR
When the Active AR is larger than 2.33:1, the black areas are large enough to apply a 1.33x vertical stretching to
the picture without information lost. Then the picture geometry is restored to its original AR with the anamorphic
lens with seamless black masking using the higher definition.
5.4 Configure the DreamScaler 4 to control the THEATRE System
The DreamScaler 4 has ensures two tasks when coupled with a THEATRE System.
Anamorphic Pre-Processing
The DreamScaler 4 is programmed to apply a vertical stretch per resolution and input. Configure the DreamScaler
4 into THEATRE Mode to have it set automatically:
• Output Setup
⇒ ⇒
⇒ ⇒
Aspect Ratio
⇒ ⇒
⇒ ⇒
Lens - Mode 1 - Auto
• Input Aspect Ratio
⇒ ⇒ ⇒ ⇒
Frame AR
⇒ ⇒ ⇒ ⇒
16:9
• Input Aspect Ratio
⇒ ⇒
⇒ ⇒
Active AR
⇒ ⇒
⇒ ⇒
select the Active AR that suits your video source
The vertical stretching is automatically set when the DreamScaler 4 is configured in THEATRE Mode and if the
Input Active AR is larger than 2.33:1.
Note:
By applying a vertical stretch to the video source, the vertical resolution of the picture is greatly improved. The other
gain of this process is to activate the unused pixels of the display matrix of the projector, and it greatly improves the
brightness performances and render finer details in a constant image height (CIH) setup, allowing the use of larger
screens.
Active AR is 1:33 Active AR is 1.78
Active AR is User=3.00:1 Active AR is 2.33:1
No vertical stretching
Vertical stretching is applied
No vertical stretching
Vertical stretching is applied