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HDMI 2.2: A Leap Forward in Connectivity
The announcement of HDMI 2.2 at CES marks a significant development in the evolution of HDMI technology. After several years of navigating the challenges associated with the HDMI 2.1 specification, the HDMI Forum has introduced a new standard that promises to address many of the connection issues users have faced.
HDMI 2.2 will require new cables for optimal performance, although it retains the familiar physical connectors found in previous versions. To assist in identifying compatible cables, a new “Ultra96” marker will be used, indicating that these cables can support an impressive bandwidth of 96 Gbps, which is double the capacity of HDMI 2.1b’s 48 Gbps. This increased bandwidth is expected to deliver enhanced resolution and refresh rates alongside a new “next-gen HDMI Fixed Rate Link.”
The potential applications of HDMI 2.2 are extensive. The Forum has identified various fields that stand to benefit significantly from this boost in bandwidth, including augmented reality (AR), virtual reality (VR), mixed reality (MR), spatial reality, and light field displays. Additionally, advancements in medical imaging and machine vision are anticipated, which could transform how these technologies are utilized in various industries.
Enhanced Synchronization Capabilities
One of the noteworthy features of HDMI 2.2 is the introduction of the Latency Indication Protocol (LIP). This protocol aims to improve audio and video synchronization across devices, particularly in complex home theater systems that involve multiple components, such as soundbars and receivers. Many consumers have experienced delays that hinder the viewing or listening experience, and LIP is designed to mitigate these issues.
Illustrations provided by the HDMI Forum demonstrate how LIP can effectively synchronize audio in various settings, including scenarios with headphones and systems connected through Audio Return Channel (ARC) and enhanced Audio Return Channel (eARC). This feature is expected to enhance the overall user experience by ensuring that sound and image are delivered in perfect harmony, even in mixed systems where some devices are connected directly to the TV, while others are routed through the receiver.
A Look at Bandwidth Evolution
The journey of HDMI technology has been marked by tremendous growth in bandwidth capabilities. From its inception with HDMI 1.0 to the latest HDMI 2.2, there has been a consistent trend towards accommodating ever more demanding audio and visual formats. The evolution of HDMI standards reflects the industry’s response to the increasing desire for immersive and high-fidelity viewing experiences.
As consumers continue to seek out devices and experiences that leverage the technological advancements of HDMI 2.2, it will undoubtedly set new benchmarks for performance and compatibility in the years to come.
Source
arstechnica.com