TDA9171

The TDA9171 is a transparent analog video processor with YUV input and output interfaces.

The luminance transfer is controlled in a non-linear way by the distribution, in 5 discrete histogram sections, of the luminance values measured in a picture. As a result, the contrast ratio of the most important parts of the scene will be improved.

So as to maintain a proper colour reproduction the saturation of the -U and -V colour difference signals are also controlled as a function of the actual non-linearity in the luminance channel.

Optionally, the YUV blue stretch TDA9171 circuitry can be activated which offsets colours near white towards blue.

The supply voltage is 8 V.

The TDA9171 is contained in a 20 lead dual in-line package.