HDMI (High-Definition Multimedia Interface) is the most popular medium for transporting both audio and video information between two digital devices. In the past two decades, HDMI technology has evolved from HDMI 1.0 to HDMI 2.0. In 2017 HDMI 2.1 introduced enhanced gaming and media features such as Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM) to eliminate lag, stutter, and tearing, adding smoothness to the gaming and video experience. Recently the HDMI Forum has announced a new version, HDMI2.1a, that brings a standout gamer-friendly feature, Source-Based Tone Mapping (SBTM).
With the release of HDMI 2.1, higher video resolutions and refresh rates including 8K@60Hz and 4K@120Hz are a reality. In a previous blog, 10K Resolution at 120Hz Display: A Reality Today with DSC 1.2 in HDMI 2.1, we explained how HDMI 2.1 can support resolutions and refresh rates of the order 4K@240Hz, 8K@120Hz and 10K@120Hz with display stream compression (DSC). With increased resolution you get finer details and with higher refresh rate the moving content feels smoother. But it also means more pixel information and thus higher data transmission rate, higher bandwidth, and higher power consumption. What if there is a way to reduce the transmission rate while keeping the resolution and refresh rate intact? The answer lies in the reduced blanking feature in which the blanking region of a frame is reduced significantly.
SoC designs are growing more complex, not just by the sheer number of transistors that can be packed into one design, but the emergence of different interconnect methods you must use to connect chip internals and to connect to the outside world. Becoming an expert on each of the interconnect protocols is not going to shorten the verification schedules, reduce design productivity and expose design bugs that might only be found when used by the end consumer.
Color space is a very powerful tool that comes in handy when capturing, transmitting and reproducing color back to the human eye. Systems such as cameras, GPUs, transmission cables (HDMI/DP), and monitors use color space metrics to preserve and transform color. This technology helps map real colors to the color model’s discrete values.
Lately television lovers across the world have an even better reason to be glued to the small screens, as 8K Ultra HD TVs have made their way to the market. The HDMI forums most recently released specification, v2.1, explains “higher video resolutions support a range of high resolutions and faster refresh rates including 8K60Hz and 4K120Hz for immersive viewing and smooth fast-action detail…” Most of us are familiar with the word “resolution”, but do we really know this term well?
The color space is a very powerful tool that comes in handy when capturing and transmitting color back to the human eye. All systems like cameras, GPUs, transmission cables (HDMI/DP), monitors, etc. use color space metrics to preserve and transform color.
HDMI (High-Definition Multimedia Interface) has been a part of our entertainment systems for nearly two decades now. Though the look of the cable has remained the same over the years, the input has undergone many improvements since its release in 2002.
HDMI ARC, What is it and Why You Should Care?
USB4 is the next generation of the Universal Serial Bus and a major update to the interface in speed and functionality. USB4 has incorporated Thunderbolt 3 capabilities, which extends support of USB interface to existing PCIE, and DisplayPort over the same USB Type-C connector. USB4 doubles the maximum overall throughput from 20Gbps to 40Gbps enabling optimized HD video and data transfer simultaneously. USB4 enables many applications using USB Type-C, which already supports power delivery, USB 3.2, USB 2.0 and other alternative protocols.