ICM202B Datasheet, PDF(7/36 Page) List of Unclassifed Manufacturers – CIF/QCIF CMOS image sensor with digital YUV output

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ICM202B Datasheet, PDF (7/36 Pages) List of Unclassifed Manufacturers – CIF/QCIF CMOS image sensor with digital YUV output

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ICM202B CIF/QCIF CMOS sensor with digital YUV output

Data Sheet V2.0, February 2003

1.5 Auto White Balancing

Due to the different transparency and the overlapping spectrum response of the R, G, and B filters, the

interpolated color may not be balanced. The Auto White Balancing performs the White Balance function

automatically . The following register are used to control the AWB function:

0x33 (AD_AWB_CTRL, Default = 3)

0 : Disable AWB

1 : Enable AWB with R,G,B range limited

3 : Enable AWB with no range limited

0x34 (AD_AWB_OVERFLOW, Default = 255)

Set the overflow value of the sampling pixel, if the sampling data is larger than

AD_AWB_OVERFLOW, then it will not be used for AWB processing. The default value 255 means

there is no limit on sampling data.

0x35 (AD_AWB_BRIGHT, Default = 0)

Set the minimum bright value of the sampling pixel, if the sampling data is less than

AD_AWB_BRIGHT, then it will not be used for AWB processing. The default value 0 means there is

no limit on sampling data.

When AWB function is disabled, the following registers are used to adjust the White Balance manually:

0x37 (AD_WB_RED, Default = 0x80 )

Set the RED Gain manually.

0x38 (AD_WB_GREEN, Default = 0x80)

Set the GREEN Gain manually.

0x39 (AD_WB_BLUE, Default = 0x80)

Set the BLUE Gain manually.

1.6 Sharpening

The following register are used to control the Sharpening function:

0x30 (AD_SHARP_CTRL, Default =9)

0 : Disable Sharpening.

8 : Sharpen Weight = 0.5 (light Sharpening)

9 : Sharpen Weight = 1 (default)

a : Sharpen Weight = 1.5

b : Sharpen Weight = 2

c : Sharpen Weight = 2.5

d : Sharpen Weight = 3

e : Sharpen Weight = 3.5

f : Sharpen Weight = 4 (heavy Sharpening)

0x31 (AD_SHARP_HIGH,Default = 5)

Sharpening High Tone Threshold.

0x32 (AD_SHARP_LOW,Default = 2)

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page 7

2/5/2003

Confidential

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