基于HDMI接口的4K超高清电视码率研究

Research on 4K UHD Bitrate Based on HDMI Interface

HDMI是超高清电视最常用的接口,随着超高清电视技术发展而不断更新版本,其中HDMI 2.0版本在支持4K超高清电视方面就引起人们很多误解。本文通过对HDMI技术和传输原理的介绍,从HDMI带宽与码率两个维度详细说明HDMI带宽与超高清电视码率的关系,得出HDMI 2.0不支持4K/60P 4:4:410比特格式的超高清视频应用,消除了人们的疑惑,同时也进一步提高了人们对HDMI及其4K超高清电视应用的认识。

HDMI is the most commonly used interface for UHD.With the development of UHD technology,there are many misunderstandings about the transmission of 4K UHD by HDMI 2.0.In this paper,the HDMI technology and transmission principle are introduced,and the relationship between HDMI bandwidth and the effective pixel bitrate is explained in detail from the two aspects of HDMI bandwidth and the video bitrate.It is concluded that HDMI 2.0 does not support UHD video transmission in 4K/60P 4:4:410-bit format.It eliminates people's doubts,and also further improves the understanding of HDMI and its application in 4K UHD.