Hitachi CL43WP910TAN, Service Manual

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enhancement and digital com b filtering takes place. Separated luminance and chrominance output
components are available via a digital to analogue 8 bit converter at pins 1 & 4 of PN01 respectively.
Digital Double Scan Conversion Unit (Feature Box)
.
The main feature of this unit is frequency double scan conversion 100Hz interlaced and 50/60Hz progressive scan.
Other features of this unit are noise reduction, line flicker reduction, CTI (Colour Transient Improvement),
sharpness, vertical zoom and horizontal compression. These functions arecontrolled by I2C bus. This unit is powered
from +5V and +8V supplies, feeding into pins 1, 2 and 6 of E U02 respectively. The three input 50Hz video
signals Y, U, V are sent to this unit at pins 8, 10 and 12 of EU01. The Y, U, V video output signals (double frequency
video) are taken from pins 5, 3 and 1 of EU01. The horizontal and vertical sync signals are input to this unit as a
composite video signal at 4 of EU02, the double frequency sync signals outputs are from pins 10 and 11of EU02.