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12 BlendPRO-II • User’s Guide
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About the BlendPRO-II
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The BlendPRO-II is a “presentation” system component that allows standard high-
resolution images (as generated by multiple ScreenPro-II units) to be displayed in a multi-
projector widescreen format. The system completely eliminates the need to “pre-overlap”
source material during the content creation phase of your presentation.
BlendPRO-II receives signals from up to four ScreenPro-II units (via high-resolution DVI
connections) and processes the video for display in multi-projector widescreen format.
Processing includes:
• Data doubling to generate overlapped projected regions.
• Edge-feathering of the overlapped images.
The amount of data overlap and edge-feathering parameters are user-programmable.
BlendPRO-II supports simultaneous digital and analog output signals to separate DVI and
HD-15 connectors. Refer to the “Connectivity Diagram” section on page 14 for an
illustration of a typical BlendPRO-II application.
In order to synchronize the ScreenPRO-II units for use in a widescreen projection
application (in conjunction with the ScreenPRO-II Controller), BlendPRO-II provides a
Widescreen Lock output which is used to lock each ScreenPRO-II unit to one common
master timing signal. In addition, this signal supports real-time command synchronization
between all connected ScreenPRO-II units, which in turn guarantees that all time-critical
functions (such as T-Bar commands) occur synchronously across all units.
Please note the following important points:
• For applications where it is desirable to frame lock the system’s widescreen output
to a master house sync (such as an NTSC or PAL black burst signal), a Genlock
input BNC is provided.
• The unit frame locks to CSYNC (composite bi- or tri-level) sync signals.
• BlendPRO-II supports only progressive video formats.
• The unit does not provide scaling or frame rate conversion of input sources.
• Output timing matches input timing.
• Video delay through the BlendPRO-II is 6 video lines or less.
• DVI outputs from ScreenPRO-II must be H & V locked, using the “Widescreen
Lock” output from BlendPRO-II.