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eyeheight
Unit 34 Park House Watford Business Park Greenhill Crescent Watford Herts GB WD18 8PH
Reg. No. 2855535 Telephone: +44 (0) 1923 256 000 Fax: +44 (0) 1923 256 100 email: eyesales@eyeheight.com
Figure 4-2 - Composite Legaliser Structure
4.2.2
RGB Mode
The basic form of the RGB legaliser is shown in Figure 4-3. In RGB mode the
legaliser first converts the video from the YUV colour space to the RGB colour
space. The RGB data is then soft clipped according to the settings for RGB High
Clip & Knee and RGB Low Clip & Knee. Finally the clipped RGB data is
converted back to the YUV colour space. The RGB legal colour space is a subset
of the composite legal colour space so an RGB legal signal is also composite
legal but the reverse is not true.
Figure 4-3 - RGB Legaliser Structure
4.2.3
YUV Mode
The basic form of the YUV legaliser is shown in Figure 4-4. In YUV mode the
legaliser provides direct clipping of the raw YUV data using separate clip and
knee parameters for the Y and colour difference components.
