DLPC3433 datasheet(35/62 Pages) TI1

35 / 62 page

DLPC3433, DLPC3438

www.ti.com

DLPS035B – FEBRUARY 2014 – REVISED JANUARY 2016

CAIC evaluates images frame by frame and derives three unique digital gains, one for each of the R, G, and B

color channels. During CAIC image processing, each gain is applied to all pixels in the associated color channel.

CAIC derives each color channel’s gain that is applied to all pixels in that channel so that the pixels as a group

collectively shift upward and as close to full scale as possible. To prevent any image quality degradation, the

gains are set at the point where just a few pixels in each color channel are clipped. Figure 17 and Figure 18

show an example of the application of CAIC for one color channel.

Figure 17. Input Pixels Example

Figure 18. Displayed Pixels After CAIC Processing

Figure 18 shows the gain that is applied to a color processing channel inside the DLPC343x. 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 DLPC343x 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.

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DLPC3433 Datasheet(PDF) 35 Page - Texas Instruments