【HDMI文章】HDMI信号带宽计算及速率表

发布时间:2024年01月22日

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HDMI信号带宽计算及速率表

带宽计算方法

示例1:标准4K@60Hz分辨率(CVT-RB2)

  • 解析度: 3840×2160(Htotal=3920、Vtotal=2222)
  • 刷新率: 60Hz
  • 色彩深度: 8bit
  • 色彩格式: RGB(RGB乘以3,YC422乘以2,YC420乘以1.5)

H D M I 数据带宽: 3920 × 2222 × 60 × 3 × 8 = 12542745600 ( 12.543 G b p s ) HDMI数据带宽:3920×2222×60×3×8 = 12542745600(12.543Gbps) HDMI数据带宽:3920×2222×60×3×8=1254274560012.543Gbps

示例2:标准4K@60Hz分辨率(CEA-861)

  • 解析度: 3840×2160(Htotal=4400、Vtotal=2250)
  • 刷新率: 60Hz
  • 色彩深度: 8bit
  • 色彩格式: RGB(RGB乘以3,YC422乘以2,YC420乘以1.5)

H D M I 数据带宽: 4400 × 2250 × 60 × 3 × 8 = 14256000000 ( 14.256 G b p s ) HDMI数据带宽:4400×2250×60×3×8 = 14256000000(14.256Gbps) HDMI数据带宽:4400×2250×60×3×8=1425600000014.256Gbps

编码方式对带宽的影响

1、HDMI TMDS编码方式(8/10b)效率为80%;

  • HDMI 1.4 :Max BW 8160 Mbit/s
  • HDMI 2.0 :Max BW 14400 Mbit/s

2、HDMI FRL编码方式(16/18b)效率为88%;

  • HDMI 2.1(6Gbps):Max BW 21333 Mbit/s
  • HDMI 2.1(8Gbps):Max BW 28444 Mbit/s
  • HDMI 2.1(10Gbps):Max BW 35556 Mbit/s
  • HDMI 2.1(12Gbps):Max BW 42667 Mbit/s

分辨率及带宽查询表

EncodingResolutionFrame rateColor depthColor FormatPixel Clock(MHz)Effective Bandwith(Gbps)Total Bandwith(Gbps)HDMI version
CEA-861640×480p
(800×525)
60Hz8-bit4:4:425.1750.4830.6041.4
CVT-RB2640×480p
(720×525)
60Hz8-bit4:4:421.3840.4560.5131.4
CEA-8611280×720p
(1650×750)
60Hz8-bit4:4:474.251.3271.7821.4
CVT-RB21280×720p
(1360×741)
60Hz8-bit4:4:460.4651.3271.4511.4
CEA-8611920×1080p
(2200×1125)
60Hz8-bit4:4:4148.52.9863.5641.4
CVT-RB21920×1080p
(2000×1111)
60Hz8-bit4:4:4133.322.9863.2001.4
CEA-8613840×2160p
(4400×2250)
60Hz8-bit4:2:05945.9727.1281.4
CEA-8613840×2160p
(4400×2250)
60Hz8-bit4:2:25947.9639.5042.0
CEA-8613840×2160p
(4400×2250)
60Hz8-bit4:4:459411.94414.2562.0
CEA-8613840×2160p
(4400×2250)
60Hz10-bit4:4:459414.93017.8202.1
CEA-8613840×2160p
(4400×2250)
60Hz12-bit4:4:459417.91621.3842.1
CEA-8613840×2160p
(4400×2250)
60Hz16-bit4:4:459423.88828.5122.1
CVT-RB23840×2160p
(3920×2222)
60Hz8-bit4:4:4522.61411.94412.5432.0
CEA-8617680×4320p
(9000×4400)
60Hz8-bit4:4:4237647.77657.024/
CEA-8617680×4320p
(9000×4400)
60Hz10-bit4:4:4237659.72071.280/
CEA-8617680×4320p
(9000×4400)
60Hz12-bit4:4:4237671.66485.536/
CEA-8617680×4320p
(9000×4400)
60Hz16-bit4:4:4237695.551114.048/
CVT-RBv27680×4320p
(7760×4443)
60Hz8-bit4:4:42068.6647.77649.648/

参考计算工具

https://www.kramerav.com/bandwidth-calculator/

文章来源:https://blog.csdn.net/jiangwu10086/article/details/135758959
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