ICM205B

This is a single-chip digital color imaging device ICM205B. It incorporates a 640 x 480 sensor array operating at max. 30 frames per second in progressive manner. Each pixel is covered by a color filter, which formed a so-called Bayer pattern. Correlated double sampling is performed by the internal ADC and timing circuitry.

Depending on the brightness of the scene, the raw data can be adjusted by the digital gain for all pixels, or be adjusted separately for the 4 Bayer pattern pixels. This is done either by the built-in automatic exposure control circuit, or can be done manually by the external CPU via serial bus control.

The data of the ICM205B are then processed by the color interpolation module so that each pixel will get a complete set of RGB values. To correct or enhance color, automatic white balance circuit is built-in. The user may perform white balancing and color correction manually by external CPU via serial bus too. Color saturation control is programmable via serial bus, if user is not satisfied with the default settings

At the final stage, the gamma correction of the ICM205B can also be performed, in addition to default value. The output formats include 8/16-bit YCbCr, 24-bit, 16-bit RGB, and 8-bit raw data which can be fed to other DSP,color processing, or compression chips.