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(1) (High Data Rate) A CDMA 3G technology. See Qualcomm HDR.

(2) (High Dynamic Range for photos) See HDR for photos.

(3) (High Dynamic Range for TV) A high dynamic range for display screens that generates more intense colors by producing blacker blacks and whiter whites. HDR is achieved by techniques within various TV brands or with TVs that support any of the HDR encoding standards added to the content.

In the TV
OLED TVs are known for their high contrast ratio; however, backlight techniques employed on LED/LCD TVs also create a high dynamic range. For example, a common method is "local dimming," in which the light is reduced to the dark pixels in real time. See OLED, LED TV and Dolby HDR.

Added to the Content
HDR10, Dolby Vision and HLG are HDR encoding methods that are added to the video format. The effects are rendered on TVs that support one or more of the standards.

HDR10 is part of the Ultra HD 4K Blu-ray standard. It supports 10-bit color, which renders 1,024 shades, one billion colors and 1,000 nits of brightness. See nit.

Dolby Vision
Dolby Vision supports 12-bit color, which equates to 4,096 shades, 68 billion colors and 10,000 nits, although most displays cannot handle more than 4,000 nits. See Dolby HDR.

Both HDR10 and Dolby Vision use meta-data that compliant TVs interpret but non-HDR TVs ignore. However, HDR10 meta-data affects the overall content, whereas Dolby Vision meta-data can change from scene to scene.

HLG (Hybrid Log Gamma)
Developed by the broadcast industry, HLG is the newest of the three. HLG does not use meta-data but adds a logarithmic curve to the standard dynamic range (SDR) gamma curve. HLG is compatible with old and new TVs. See contrast ratio and PQ.
References in periodicals archive ?
In the ensuing HDR Photo Merge Preview dialogue box, you want Auto Align checked so any subtle shift in exposure will be corrected.
Sports hub on DISH channel 147: In addition to live Olympic coverage on local NBC channels, DISH will offer a sports hub for easy navigation of NBCUniversal coverage across NBCSN, USA Network, CNBC, the Olympic Channel: Home of Team USA and DISH channel 540 featuring NBCUniversal's 4K HDR coverage of the Olympic Winter Games.
Support for HDR Pro means the television can read the HDR content, but it can't play the same on the screen.
9679; HDR Denoise helps reduce any digital noise or distortions for clear and sharp looking images.
In the present study, we identified a nonsense mutation in GATA3 [sup][6] in a hearing impaired Chinese family with various clinical features of HDR syndrome by using targeted capture and next-generation sequencing (NGS).
The International Telecommunication Union (ITU) ratified its standard for working with HDR in July in a move that will accelerate broadcaster UHD services globally.
The hope is that HDR can help staunch the double-digit declines across disc sales and rentals in 2014, according to trade org Digital Entertainment Group.
The ProCamera 8 + HDR has an intuitive interface that enables users to adjust focus and control exposure with simple screen swipes--its functionality rivals that of my Nikon 7000 DSLR camera.
In the second road race, over a 46-mile course, Geoff Martin the highest HDR finisher in seventh place - adding more points to his British Cycling race licence.
This latest series of over-the-air tests confirms that Technicolor's HDR video solutions support broadcast at HD and 4K resolutions, as well as for standard dynamic range and mobile devices, presenting a whole new world of opportunities for broadcasters.
This means that full HDR video content can now be encoded and streamed directly to remote displays, including mobile devices, or sent for storage back at home-base.