Eyeheight makes HD-SDI signals legal

Eyeheight has introduced a new modular broadcast HD legalizer that restricts the Y, U and V components of incoming HD-SDI signals. The legalHHPi high reduces the saturation of pixels which would otherwise result in overmodulation of the composite waveform.

The company says composite mode preserves the hue of each pixel but not the saturation. When the signal is converted to a composite waveform, the Y component is held within the range allowed by the Y High Clip and Y Low Clip. The total composite waveform is maintained within the range defined by Composite High-Clip and Composite Low-Clip.

Operating in composite, YUV and RGB colour spaces, legalHHPi incorporates two independent outputs for ‘Legalize’ and user controllable ‘Legal/Indicate’. Clipping levels and soft-clipping knee levels are adjustable. Eyeheight’s ‘Clobbering’ technology suppresses luminance overshoot and undershoot. EDH re-insertion with integral luma and chroma gain, black level adjustment and hue rotation are provided.

The legalizer incorporates EBU-R2003 standard legalisation settings and 7.5 IRE or 0 IRE pedestal with six user-memories. The monitoring output includes a legalization-severity display mode unique to Eyeheight. Timecoded legalization logs can be viewed and stored on an external PC using software supplied.

Eyeheight’s legalHHPi hue-processing legalizer is available in half
and full rack width configurations, both being fully controllable from
the front panel. Power consumption is less than 50 W, 100-240 V AC.

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