"除此以外，汽车领域正在成为DisplayPort瞄准的新方向。"VESA 合规项目经理 Jim Choate在此 前的一场媒体分享会中说。 如果您希望可以时常见面，欢迎标星收藏哦~ VESA 合规项目经理 Jim Choate 众所周知，随着汽车技术日益智能化和网联化，车内高分辨率显示屏数量持续增长。这些显示屏为 驾驶员提供安全高效行车所需的各种关键信息。目前，大多数车载显示器采用DisplayPort或eDP 从中央车辆计算机（ECU）向显示器传输视频数据。除了高视频带宽能力外，DisplayPort还支持 多流传输，允许将多个显示器连接到单个DP源端口。 作为一家国际性非营利标准组织，汇聚了全球340余家硬件、软件、计算机、显示器及组件制造商 的视频电子标准协会（VESA）在过去三十多年里一直致力于为视频与电子行业制定并推广简单、 通用且兼容性强的跨产品解决方案。 协会推出的DisplayPort标准已成为DVI、LVDS和VGA的行业替代方案。它采用先进的数字协 议，具备高度可扩展性，为PC、显示器、笔记本电脑、游戏主机、耳机、AR/VR甚至智能手机带 来了卓越的数字显示体验奠定体验。 VESA的DP ...

Core Viewpoint - The release of Huawei Mate TV has sparked speculation about the interface protocol it uses, with GPMI (General-Purpose Multimedia Interface) being a prominent candidate for adoption, marking a significant step in China's multimedia interface standardization efforts [1][13]. Group 1: GPMI Development and Background - GPMI is not the first attempt at establishing a Chinese multimedia interface standard; previous efforts include DiiVA, which was launched in 2008 but failed to gain traction due to a lack of market influence [2][3]. - The GPMI standard was officially released in 2023, following a series of developmental milestones, including the establishment of a working group in 2019 and the release of a draft standard in 2021 [6][12]. Group 2: Technical and Policy Support - GPMI aims to address the limitations of traditional multimedia interfaces by enabling multi-stream transmission of audio, video, and control signals, enhancing user experience [4][7]. - The Chinese government has provided substantial support for GPMI, designating it as a core technology for high-speed interfaces and facilitating its application in various scenarios [5][10]. Group 3: Competitive Landscape - GPMI faces competition from established international standards like HDMI and DisplayPort, with GPMI Type-C supporting data rates of up to 96Gbps and power delivery of 240W, while Type-B can achieve 192Gbps and 480W [8][9]. - The performance of GPMI has been highlighted as superior to HDMI and DisplayPort, with a broader range of applications, including TVs and data transmission [14][15]. Group 4: Industry Collaboration and Ecosystem Building - Over 50 leading companies, including Huawei and TCL, are collaborating to develop GPMI, creating a comprehensive ecosystem that spans chips, terminals, and testing [10][11]. - The first GPMI-enabled smart TV was launched by Haier in late 2024, marking a significant entry into the consumer market and enhancing GPMI's visibility [12]. Group 5: Strategic Importance - The establishment of GPMI is seen as a crucial step for China to gain a foothold in the global multimedia interface market, potentially breaking the long-standing dominance of international standards [13][14]. - GPMI's development is positioned as a strategic move to enhance China's technological sovereignty and competitiveness in the global tech landscape [15].

Core Viewpoint - The article emphasizes the critical role of the physical layer (PHY) in data communication, particularly in the context of emerging technologies such as artificial intelligence and high-performance computing, highlighting its importance in meeting the increasing demands for bandwidth, low latency, and energy efficiency [3][6][11]. Summary by Sections Importance of PHY - The physical layer has evolved from supporting traditional industries to becoming foundational for AI factories and large-scale data centers, acting as a key driver for data transmission and communication [3]. - As data centers handle massive amounts of data, the significance of PHY increases, especially for AI and HPC workloads that require unprecedented system performance [3][6]. Standards and Applications - Understanding the physical layer is crucial for maintaining competitiveness in various applications, with different standards developed to address specific issues [4]. - Standards like HDMI and DisplayPort illustrate the need for compatibility and efficiency in system design, balancing cost and functionality [5]. Design Challenges - Designing PHY for speeds exceeding 100G presents numerous challenges, including process technology dependence, signal integrity, system design constraints, and packaging integration [8]. - The transition from NRZ to PAM signaling represents a significant shift in technology, necessitating advanced design techniques to meet increasing bandwidth demands [7][8]. Chip-to-Chip Communication - The development of chip-to-chip communication standards, such as UCIe, aims to achieve high bandwidth with low power consumption, which is essential for modern 3D systems [9]. - The integration of multiple dies in a system-on-chip (SoC) architecture requires careful consideration of physical layer protocols to optimize performance [9][10]. Collaboration Between Disciplines - Effective collaboration between analog and digital engineers is necessary to bridge the gap between different domains, ensuring that physical effects are adequately addressed in system design [10][11]. - A comprehensive understanding of how physical effects impact system performance is vital for optimizing designs and achieving desired outcomes [11]. Future Outlook - As the industry progresses towards higher standards like 448G, the challenges will intensify, particularly with the emergence of chip decomposition and optical I/O [11]. - The PHY layer is increasingly viewed as a strategic enabler, necessitating continuous innovation and commitment to pushing technological boundaries [11].