Video Mode - Texas Instruments DLP LightCrafter 4500 User Manual

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Typical variations in LED manufacturing can lead to changes in the brightness and current consumption.
Thus for typical white balance point, TI recommends the following percentages of colors:
• Red or green is approximately 87.5%
• Blue or green is approximately 97.6%
At the default LED current values of:
• Red = 104
• Green = 135
• Blue = 130
The LED Selection box determines the control of the LED enables signals. Two options are allowed:
• Automatic: LED enables are controlled by the DLPC350 sequencer. In Video Mode, the LED enables
are set in color sequential order. In Pattern Sequence mode, the LED enables are controlled by the
downloaded Pattern Sequence settings.
• Manual: LED enables are controlled by the check boxes. Checking a color, continuously enables the
LED of that color at the given LED current setting.

3.2.5 Video Mode

When the DLP LightCrafter 4500 is configured in Video Mode, the Input Source Select section in
1 in the top-left part of the Video Mode tab selects the input source to be displayed by the DLPC350. The
DLPC350 treats these as video inputs and applies image processing functions, like scaling, gamma
correction, color coordinate adjustments, and so forth. The following lists the allowable input sources:
• Parallel RGB interface: Supports 24-, 20-, 16-, 10-, and 8-bit data inputs. This interface is connected to
the TFP401 for DVI input from the mini-HDMI connector or to the system board connectors. The Pixel
Data Format section is below the Source Select interface selects the allowable pixel data formats for
the Parallel RGB interface:
– RGB 4:4:4
– YCrCb 4:4:4
– YCrCb 4:2:2
• Internal Test Pattern: 24-bit internal pattern generator with RGB 4:4:4 pixel data format. The internal
test patterns offer color control of the foreground and background color of the pattern through the
Internal Test Pattern Color section. The available internal test patterns and their respective foreground
and background color control are:
– Solid field: Foreground color control only
– Horizontal ramp: Foreground color control only
– Vertical ramp: Foreground color control only
– Horizontal lines: Foreground and Background color control
– Diagonal lines: Foreground and Background color control
– Vertical lines: Foreground and Background color control
– Grid: Foreground and Background color control
– Checkerboard: Foreground and Background color control
– Red, green, and blue ramps: Foreground color control only
– Color bar: Foreground color control only
– Step bar: Foreground color control only
• Flash images: single-frame, 24-bit Still images stored in external flash memory. The flash memory
supports up to 32MB of storage with up to 64 images. The images stored in flash memory support
RGB 4:4:4 and YCrCb 4:2:2 pixel data formats.
• FPD-link: Flat Panel Display Link connector. The FPD-link interface supports 30-, 24-, 20-, 16-, 10-,
and 8-bit data inputs with RGB 4:4:4 pixel data format. The FPD Mode and Field Select configures the
mapping of the pixel mode, polarity, and CONT1 and CONT2 field signals.
DLPU011E – July 2013 – Revised September 2015
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Operating the DLP LightCrafter 4500
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