CEA sætter minimumsanbefalinger til Ultra HD skærme
Consumer Electronics Association (CEA) har for nylig annonceret deres opdaterede minimumsanbefalinger til Ultra HD skærme.
Disse udvidede display egenskaber (CEA’s Ultra High-Definition Display Characteristics V2) – er frivillige retningslinjer, der træder i kraft fra September 2014 . De skal blandt andet være med til at skabe klarhed for både forbrugere og detailhandlere.
Herunder kan du se enkelte delelementer:
- Display Resolution – Has at least eight million active pixels, with at least 3840 horizontally and at least 2160 vertically.
- Aspect Ratio – Has a width to height ratio of the display’s native resolution of 16:9 or wider.
- Upconversion – Is capable of upscaling HD video and displaying it at Ultra High-Definition resolution.
- Digital Input – Has one or more HDMI inputs supporting at least 3840×2160 native content resolution at 24p, 30p and 60p frames per second. At least one of the 3840×2160 HDMI inputs shall support HDCP revision 2.2 or equivalent content protection.
- Colorimetry – Processes 2160p video inputs encoded according to ITU-R BT.709 color space and may support wider colorimetry standards.
- Bit Depth – Has a minimum color bit depth of eight bits.
En af de første måder forbrugerne har adgang til ægte 4K indhold er via Internet streaming Ultra HD Smart TV, og derfor har CEA defineret nye egenskaber for sådanne Ultra High-definition-skærme.
- Video Codec – Decodes IP-delivered video of 3840×2160 resolution that has been compressed using HEVC* and may decode video from other standard encoders.
- Audio Codec – Receives and reproduces, and/or outputs multichannel audio.
- IP and Networking – Receives IP-delivered Ultra HD video through a Wi-Fi, Ethernet or other appropriate connection.
- Application Services – Supports IP-delivered Ultra HD video through services or applications on the platform of the manufacturer’s choosing.
CEA arbejder også med organisationens producentmedlemmer om at udvikle et UHD logo for at hjælpe forbrugerne med at identificere UHD produkter på markedet, der opfylder CEA retningslinjer.
Kilde: CEA
