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    The Densité 3 UHD-3901-UC is a dual-channel quad link 3G/3G/HD-SDI upconverter, which is designed to upconvert and process HD signals for both 3G 1080p and 4K UHD 2160p broadcast production.

    The UHD-3901-UC application features broadcast quality upconverts with a high-quality scaler, motion-adaptive de-interlacer and color space conversion from ITU-R BT.709 to ITU-R BT.2020. A frame buffer is provided to keep the quad link 3G and 3G-SDI outputs aligned with respect to a reference signal. In 4K UHD mode, the signals generated are output on quad link 3G-SDI as per SMPTE ST 425-5, as two sample interleave (2SI) or square division (SD) outputs, user selectable per channel. The 3G/HD embedded audio and metadata are delayed to maintain synchronization with video before re-embedding in the 3G output or on quad link 3G link 1 when in 4K UHD operation.  There are many benefits to adding the UHD-3901-UC to workflows, enhancing production capabilities.

    The UHD-3901-UC interfaces with Grass Valley HD cameras and K2 Dyno replay servers (at 6X) to create 4K UHD signals that can then be delivered to a 4K UHD production switcher in a very economical way  — instead of using the switcher’s mix effects banks. The optional HDR processor, UHD-3901-OPT-HDR, allows conversion between SDR and HDR formats, supporting HLG (ITU-R BT.2100), PQ (SMPTE ST 2084, ITU-R BT.2100) and S-Log3/S-Gamut3 formats, with conversion between formats.