HDMI 2.2

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HDMI 2.2规格,正式发布
半导体行业观察· 2025-06-26 03:49
Core Viewpoint - The HDMI Forum has officially announced the next-generation video standard HDMI 2.2, which will be rolled out throughout the remainder of the year, featuring a new Ultra96 cable that surpasses DisplayPort in maximum bandwidth support [1]. Group 1: HDMI 2.2 Specifications - HDMI 2.2 improves bandwidth from 48 GB/s to 96 GB/s compared to HDMI 2.1, with new cables labeled "Ultra96" to ensure consistent performance across devices [3]. - The new bandwidth supports 16K resolution at 60 Hz and 12K resolution at 120 Hz, enabling 4K at 240 Hz with a color depth of up to 12 bits without compression [5]. - Only cables explicitly marked with Ultra96 can achieve these high video transmission capabilities, and manufacturers can claim HDMI 2.2 compliance without enforcing bandwidth limits [5]. Group 2: Compatibility and Features - HDMI 2.2 is backward compatible, allowing new cables to work with older ports and vice versa, ensuring at least HDMI 2.1 functionality [7]. - A new feature called "Latency Indication Protocol" (LIP) will help synchronize audio and video, particularly beneficial for complex home theater systems [7]. - The first HDMI 2.2 devices are expected to launch in the last quarter of the year, with AMD's upcoming UDNA GPU likely to be among the first to adopt this standard [7]. Group 3: Market Context - Currently, AMD's Radeon Pro graphics cards are the only ones fully supporting the DisplayPort 2.1b UHBR20 standard, while the RX 9000 series has a lower transmission rate of 54 GB/s [8]. - It remains to be seen whether AMD will implement similar UDNA technology to provide full HDMI 2.2 bandwidth exclusively on workstation GPUs [8].
新版HDMI,有何不同?
半导体行业观察· 2025-04-11 00:55
Core Viewpoint - The article discusses the advancements in HDMI technology, particularly focusing on HDMI 2.1 and the newly announced HDMI 2.2, highlighting their features and implications for consumers and the industry [1][5]. Group 1: HDMI 2.1 Overview - HDMI 2.1 was officially announced in November 2017, significantly increasing bandwidth from 18 Gbps to 48 Gbps, allowing for higher video resolutions and refresh rates [3]. - It supports 120 Hz 4K video, 60 Hz 8K video, and even 10K video, along with advanced gaming features like Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM) [3][4]. - HDMI 2.1b also includes features like HDMI eARC for lossless audio transmission and dynamic HDR support for scene-by-scene optimization [4]. Group 2: HDMI 2.2 Features - HDMI 2.2, announced at CES 2025, doubles the bandwidth to 96 Gbps, targeting commercial applications and advanced consumer technologies like AR and VR [5][6]. - It aims to enhance medical imaging and next-generation media production, with potential applications in machine vision for robotics and autonomous vehicles [6][7]. - A notable improvement is the Low Latency Indication Protocol (LIP) for better audio-video synchronization between devices [7]. Group 3: GPMI Development - The GPMI (General Purpose Media Interface) was developed by a coalition of over 50 Chinese companies, providing a unified multimedia interface solution [9][10]. - GPMI offers a bandwidth of up to 192 Gbps and a power delivery capability of 480W, addressing the complexity of multiple connections in traditional setups [10]. - It supports dual-directional control, allowing users to operate multiple devices through a single interface, enhancing user experience [10][11]. Group 4: Comparison with Existing Technologies - GPMI is positioned as a potential alternative to HDMI and DisplayPort, with specifications that surpass current standards in terms of bandwidth and power delivery [10][11]. - HDMI 2.1 and DisplayPort 2.1 have lower bandwidth capabilities compared to GPMI, which could lead to a shift in industry standards [10].