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单词 hdr
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HDR


HDR

(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
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.
MedicalSeeHDRFinancialSeebracketing

HDR


AcronymDefinition
HDRHigh Dynamic Range
HDRHigh Dose Rate
HDRHeader
HDRHerr der Ringe (German: Lord of the Rings)
HDRHeavy Duty Rotary (machine tool)
HDRHickory Daily Record (Hickory, NC)
HDRHigh Data Rate
HDRHigher Degree Research (education)
HDRHigh Definition Resource
HDRHard Disk Recorder
HDRHigh Definition Range
HDRHost Data Replicator
HDRHigh Definition Rendering
HDRHigh Definition Recording
HDRHot Dry Rock
HDRHabilitations à Diriger des Recherches (French: Accreditation to Supervise Research; various universities)
HDRHigh Definition Radio
HDRHumanitarian Daily Ration
HDRHealth Data Repository
HDRHeavy Duty Repairman
HDRHigh-Definition Rendering
HDRHenningson Durham and Richardson (Architecture and Engineering Firm)
HDRHuman Dimensions Research
HDRHeissdampfreaktor (German: Hot Steam Reactor)
HDRHuman Development Resources
HDRHyper Dimensional Resonator
HDRHome Dockyard Regulations (US Navy)
HDRHard Drive Restore
HDRHighly Dent Resistant (trasnportation feature)
HDRHigh Desert Roundup (California)
HDRHelp Desk Request
HDRHigh Dose Remote Afterloading
HDRHuman Developments Report
HDRHardware Design Review
HDRHistorical Data Record
HDRHardware Development Requirements
HDRHemispherical Dielectric Resonator
HDRHalf-sized Diazo Reproducible drawing
HDRHybrid Detail Record
HDRHost Data Replication (SNA Server)
HDRHalf-Duplex Relay
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更新时间:2025/3/4 12:14:08