Technicolor - Thomson CCU DT 500 Presentation, 1 2 3 4 5 6 MHz, THOMSON TTV1707 / CCU DT500

116	Chapter 1 - Specifications
	Presentation

1.2 - PRESENTATION

Wide aperture prism type optical separator (f/1.4)

The separator is fitted with:

•A 4-position density filter wheel.

•A 4-position effect filter wheel.

•1 quartz filter, suppressing colorimetric errors due to reflected polarised light.

•1 anti-aliasing optical filter.

•1 infrared filter.

High performance video processing chain

Gain in steps of - 3 dB to + 21 dB.

Digital video processing over 12 bits consists mainly:

•Automatic Black Shading Correction.

•White Shading Correction.

•Automatic pixel correction:

Pixel correction is intended to reduce non-uniformity between pixels. This device corrects the pixels which may have become defective with time.

•Automatic flare compensation.

•Contour correction:

This correction includes a correction of “aperture” centred on 6-7 MHz intended to compensate for the loss in modulation depth up to 6 MHz, and a “physiological” correction centred on 3-4 MHz intended to provide image relief. This correction is generated by the three R,G,B channels.

Physiological	detail	Aperture
correction	centring	correction

100 %

1 2 3 4 5 6 MHz

Video signal with contour and lowpass optical filter

THOMSON TTV1707 / CCU DT500	B1707M00LD
User manual	September 2000