The Eyeheight LE-2M auto-detects incoming SDI or HD-SDI video and applies the appropriate legalizing format.
The BBC selected Eyeheight’s LE-2M video legalizing technology for its live coverage of the 2018 Wimbledon Open tennis tournament. This year’s contest was broadcast live to audiences worldwide from Monday June 25 through to the men’s final on Sunday July 15.
Eyeheight sales director Martin Moore said that summer sports can be quite challenging for outside-broadcast camera crews, given the wide variation in light levels and the ever-present potential for bright reflections bouncing in from the public enclosure. The LE-2M units chosen for this year’s event ensured that video content captured throughout the series conforms fully to internationally agreed signal levels.
The Eyeheight LE-2M auto-detects incoming SDI or HD-SDI video at 1080i/50/59.94, 720p/50/59.84, 625/50 or 525/59.94 and applies the appropriate legalizing format. It then ensures that incoming signal video is held within user-selected color-space parameters: RGB; YUV; composite (PAL or NTSC); or RGB-and-composite combined. Legalization can be performed to conform with EBU-R 2003 standard SDI settings and 7.5 IRE or 0 IRE Pedestal. Six user memories and common presets are provided.
Additional features of the LE-2M legalizer include Eyeheight's clobberRing automatic luma overshoot and undershoot suppression together with luma and chroma gain, black level adjustment, hue rotation, adjustable clipping levels and soft-clipping-knee levels. An “out-of-gamut” indication feed displays overshoot or undershoot severity and shows the user where on the picture any signal correction is being performed.
In the audio domain, the Eyeheight LE-2M-K variant provides automatic real-time control of perceptual loudness and true peak level using ITU-R BS.1770 multi-channel loudness and true-peak estimation algorithms. These are coupled with proprietary correction algorithms to ensure compliance with loudness and peak-program level requirements. Embedded stereo or surround audio loudness are continuously monitored, system gain being seamlessly adjusted across all channels to maintain the loudness limit while preserving the audio imaging. The processor also performs 8x over-sampling true-peak estimation and instantaneous correction on all stereo or surround channels, ensuring that peak-program level limits are adhered to.
Up to six LE-2M or LE-2MK legalizers can be housed in a 1 RU Eyeheight FB-9E smart chassis with an integral web server and optional FP-9 front control panel.
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