GENERAL DESCRIPTION
The TDA9178 is a transparent analog video processor with YUV input and output interfaces. It offers three main functions: luminance vector processing, colour vector processing and spectral processing. Beside these three main functions, there are some additional functions.
In the luminance vector processor, the luminance transfer function 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. Black restoration is available in the event of a set-up in the luminance signal.

FEATURES
• Picture content dependent non-linear Y, U and V processing by luminance histogram analysis
• Variable gamma control
• Adaptive black and white stretch control
• Skin tone correction
• Green enhancement
• Blue stretch
• Luminance Transient Improvement (LTI)
• Smart peaking for detail enhancement
• Colour Transient Improvement (CTI)
• SCAn VElocity Modulation (SCAVEM) output
• Line Width Control (LWC)
• Video Dependent Coring (VDC)
• Colour Dependent Sharpness (CDS)
• Noise measurement
• Feature Mode (FM) detector
• Cue Flash (CF) detector
• Three additional pins for access to 6-bit ADC and I2C-bus
• Adjustable chrominance delay
• TV standard independent
• I2C-bus controlled
• 1f_H and 2f_H
• DEmonstration MOde (DEMO).