DVB approves Hybrid Log Gamma broadcast HDR TV standard, paves the way for UHD Phase 2 displays

posted on Monday, 14th November 2016 by Steve May

Broadcast  HDR  HLG  4K 

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HDR broadcasts in the UK have moved closer to reality, with the news that the DVB’s steering board has approved technical specifications for UHD Phase 2, in line with the ITU proposal for BT.2100. The DVB Technical Module committee has now green lit two HDR solutions for broadcast HDR: Hybrid Log Gamma (HLG) and PQ (Perceptual Quantizer). All UK broadcasters and service providers, including Sky, BT, VirginMedia, Freeview and YouView,  work to DVB recommendations.

This Phase 2 specification also defines High Frame Rate (HFR) broadcasting above the current 50/60 Hz standard, and supports Next Generation Audio (NGA), in the form of both object based audio, and scene based audio. Both HDR and NGA can be used with Full HD and Ultra HD resolutions.

The advances will now go through the formal publication process, as BlueBook A157 and TS 101 154 v2.3.1. Broadcasters will then be free to adopt the technologies.

                    Also read
                    LG to demo high frame rate Hybrid Log Gamma HDR at IFA
                    Sony VPL-VW550ES projector review

The new specification has been hailed as a milestone for the industry, enabling broadcasters and CE manufacturers to provide UHD-1 Phase 2 products and services. Expect to hear a lot more about HLG HDR from screen makers in 2017, with the first products likely to be unveiled at CES in January.

At IFA 2016, LG was the first TV manufacturer to publicly demonstrate HDR with High Frame Rate (HFR) at 100/120 frames per second. LG partnered with the BBC and the European Broadcasting Union to demonstrate HFR HLG content compatible with both MPEG DASH (IP streaming) and DVB-T2 transmission systems. This enhanced frame rate is ideal for sports coverage, as it gives smoother, more realistic onscreen movements.

Steve May

Steve is a veteran of the UK consumer electronics industry, having covered it for
various media outlets for more than 20 years.

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