DVDO VP50 Frame Aspect Ratio, Active Aspect Ratio, Panorama, IScan Image Mapping, Zoom, Borders

The VP50PRO‘s menu is exit automatically after 30 seconds of no user interaction.

Video input signals are usually classified in the following two ways:

•Frame Aspect Ratio

•Active Input Aspect Ratio

Frame Aspect Ratio

Frame Aspect Ratio (FAR) consists of two possible ratios: 4:3 or 16:9. DVD discs encoded in a 16:9 frame are sometimes referred to as anamorphic or enhanced for widescreen TV’s. For example, a non-anamorphic widescreen DVD has a FAR of 4:3.

Active Aspect Ratio

Active Aspect Ratio (AAR) is the aspect ratio of the image or content (movie). This content is typically stated on the back cover of DVD discs. Some common active aspect ratios are as follows:

1.33:1 (4:3) 1.55:1 1.66:1 1.78:1 (16:9) 1.85:1 2.35:1

To use aspect ratio’s in addition to these, the iScan VP50PRO provides the option to choose a custom aspect ratio called ‘User’ with a range of 1.01:1-3.00:1.

Panorama

The Panorama function displays a 4:3 image in a non-linear stretch mode on a 16:9 display. This can be useful for extended viewing of this content on a display susceptible to bun-in, like a plasma or CRT.

iScan Image Mapping

The situation when the Frame Aspect Ratio (FAR) is the same as the Active Aspect Ratio (AAR) is sometimes called Full Frame. This situation is illustrated below.

The iScan VP50Pro maps the AAR to the Output Aspect Ratio (OAR) in the following three ways:

•When the AAR is greater than OAR, the iScan VP50PRO puts up Borders at the top and bottom as shown below:

Active Input	Borders
Area

•When the AAR is less than the OAR, the iScan VP50PRO puts up Borders on the left and right as shown below:

Active Input	Borders
Area

•When the AAR is equal to the OAR (Output Aspect Ratio), the iScan VP50PRO supplies no border as shown below:

Active Input

Area

Zoom

The Zoom function zooms in on or magnifies the image on your display. The minimum zoom is 100%, (no zooming); the maximum zoom is 150% (zoom magnification factor of 1.5X). Zoom controls can be accessed by using the OSD or by using the direct access button on the remote control. On the remote control, push the Zoom button followed by the P / ▼ buttons to vertically zoom the image or the Left/Right buttons to horizontally zoom the image. The amount of horizontal and vertical adjust- ment will be displayed on the front panel display.

Using the OSD, select the control that you would like to adjust, Horizontal or Vertical zoom, and push the Enter button to show the current Zoom setting. Push the P and ▼ button to increase or decrease the zooming factor. Zoom can only increase the size of the image.

NOTE: The Zoom and Pan functions are applied to the input signal, not the output. This is an im-

portant consideration, especially for the Pan function. For example: If you do not zoom a full frame image more than 100%, there is nothing to pan. However, if part of the image is not on the screen,

then the Pan function will work.

Pan

The Pan function allows the image to be shifted up, down, left and right. Note that the Pan function can only be used after the image has been zoomed to any value greater than 100%. Pan controls can be accessed by using the OSD or by using the direct access button on the remote control. On the remote control, push the Pan button followed by the P / ▼ buttons to vertically pan the image or the

T/ U buttons to horizontally pan the image. The amount of horizontal

and vertical adjustment will be displayed on the front panel display. Using the OSD, select the control that you would like to adjust, Horizontal or Vertical pan, and push the Enter button to show the cur- rent Pan setting. Push the P and ▼ button to increase or decrease the panning factor.

Borders

The Borders function allows you to add horizontal and/or vertical borders around the image. These borders obscure part of the input image. Certain input-to-output aspect ratios already result in left/ right or top/bottom border being added. This control allows the system-generated borders to be extended, or for borders to be added when none exist. As the borders are adjusted (see below) the iScan temporarily increases the gray level of the borders so that they are visible during the adjust- ment process. The level will return to normal after the adjustment has ceased.

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