Chip C4 - Ikegami HDK-790EXIII Manual

Ikegami is the world's leading supplier of state-of-the-art broadcast and professional
video production equipment.
The HDK-79EC adopts leading-edge CMOS sensor technology as an industiry first,
providing supreme picture quality and multi-format HD performance in this Full Digital
camera system configurable for portable, field, or studio use.
Incorporates Ikegami's sophisticated Chip C4 ASIC video processing technology
Revolutionary 2/3" 2.5 Mega-pixel CMOS (Complementary Metal Oxide Semiconductor) imaging sensors
Multi-format capability, Multiple application use
Enhanced operational flexibility with a wide variety of peripherals.

Chip C4

Ikegami's video processing know how greatly influenced the development of Chip C4 ASIC
(Application Specific Integrated Circuit). Chip C4 processes the digital video output from the
CMOS sensors including Knee, gamma, color and DTL correction. For example, various DTL
functions, Soft DTL, Skin tone DTL, horizontal / vertical / diagonal DTL, and DTL boost
frequency are controlled in Chip C4 with up to 38-bit internal quantization.
To improve the HDK-79EC's ability to handle the high contrast scenes frequently encountered in field production, several new functions
are programmed into Chip C4. A multiple break point Smooth Knee give progressivly more level compression as the highlight level
increases. The result is more natural reproduction of modest highlights while maintaining the broad dynamic to handle significant
highlights. Super Color Knee and Knee Detail are added to improve color and sharpness in the knee process. Zoom tracking Detail
helps compensate for loss of MTF shooting with long telephoto lenses.