DLPC3470 datasheet(43/70 Pages) TI1

43 / 70 page

DLPC3470

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DLPS110 – APRIL 2018

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Figure 23. Input Pixels Example

Figure 24. Displayed Pixels After CAIC Processing

Figure 24 shows the gain that is applied to a color processing channel inside the DLPC3470 controller . CAIC will

also adjust the power for the R, G, and B LED. For each color channel of an individual frame, CAIC will

intelligently determine the optimal combination of digital gain and LED power. The decision regarding how much

digital gain to apply to a color channel and how much to adjust the LED power for that color is heavily influenced

by the software command settings sent to the DLPC3470 controller for configuring CAIC.

As CAIC applies a digital gain to each color channel independently, and adjusts each LED’s power

independently, CAIC also makes sure that the resulting color balance in the final image matches the target color

balance for the projector system. Thus, the effective displayed white point of images is held constant by CAIC

from frame to frame.

Since the R, G, and B channels can be gained up by CAIC inside the DLPC3470 controller , the LED power can

be turned down for any color channel until the brightness of the color on the screen is unchanged. Thus, CAIC

can achieve an overall LED power reduction while maintaining the same overall image brightness as if CAIC was

not used. Figure 25 shows an example of LED power reduction by CAIC for an image where the R and B LEDs

can be turned down in power.

DLPC3470 データシート(PDF) 43 Page - Texas Instruments