AS0260CSSC28SUD20 datasheet(38/83 Pages) ONSEMI

38 / 83 page

AS0260 DS Rev. G Pub. 5/15 EN

©Semiconductor Components Industries, LLC, 2015.

AS0260: 1/6-Inch 1080P High-Definition (HD) System-On-A-Chip (SOC) Digi-

tal Image Sensor

In this use case the Adaptive weighted for highlights will expose the face the best when

compared to the other options.

AE Driver

Other algorithm features include the rejection of fast fluctuations in illumination (time

averaging), control of speed of response, and control of the sensitivity to the small

changes. While the default settings are adequate in most situations, the user can

program target brightness, measurement window, and other parameters described

above.

The driver changes AE parameters (integration time, gains, and so on) to drive bright-

ness to the programmable target. The value of the single step approach to the target

value can be controlled.

To avoid unwanted reaction of AE on small fluctuations of scene brightness or momen-

tary scene changes, the AE driver uses a temporal filter for luma and a threshold around

the AE luma target. The driver changes AE parameters only if the buffered luma is larger

than the AE target step and pushes the luma beyond the threshold.

Dark Background

Average Brightness Tracking or Average Y Weighted Average Brightnes s(centre)

Adaptive weighted based on zone luma (highlights) Adaptive weighted based on zone luma (lowlights)

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