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The new HDMI 2.1a standard will be introduced at CES 2022

CES is the first electronics-themed trade conference of the year, which attracts many technology enthusiasts every year, and technology companies unveil their latest achievements.

According to the Verge, and according to the HDMI forum, one of the achievements of CES 2022 is the introduction of an alternative standard for HDMI 2.1 called HDMI 2.1a, which gives new features and more choices to those interested; This forum is responsible for verifying and setting the certificate for the new HDMI standards.

The new HDMI 2.1a standard is the improved technology of the HDMI 2.1 standard that adds a new and important source device mapping or SBTM capability to the previous standard.

Tone mapping is a technique used in computer image and graphic processing to map a set of colors to another set in order to approximate the appearance of high-dynamic range images in media with a more limited dynamic range.

Printers, CRT or LCD monitors, and projectors all have a limited dynamic range that is not sufficient to reproduce the full spectrum of light intensity in natural scenes. By preserving image and color detail, tone mapping turns the intense contrast of the scene’s glare into a visible range, thereby preserving the audience’s understanding of the main scene content.

tone mapping

Source-Based Tone Mapping (SBTM) is a feature for displaying HDR content that allows tone mapping for this content to be applied not to the output source but to the input source.

SBTM technology is not a substitute for technologies such as HDR10, but rather helps with existing HDR settings so that the source sends optimal content to the display, eliminating the need for manual calibration of the screen.

Another application of this standard is in a combination of color and black and white content. For example, it can display both color and black-and-white content simultaneously when playing HDR games and displaying black-and-white text.

The HDMI forum adds that support for the new HDMI 2.1a standard is available for game companies and TV makers through firmware updates; However, as is the case in the past, it seems that in most cases, users will receive enhanced features after purchasing a new TV equipped with the HDMI 2.1a standard, and this feature is not provided through software software updates for the devices.

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On the other hand, SBTM, like most unique HDMI 2.1 features, such as variable refresh rate, low automatic connection latency and high bandwidth for 10K resolution or 120Hz refresh rate, will be optional and manufacturers are not required to use it.

Under the legislation of HDMI standards definition and issuance organizations, the new standards will be extended to all previous standards, and when the HDMI 2.1a standard is introduced, all new ports can receive the HDMI 2.1a label, even if from SBTM or other new HDMI 2.1 capabilities. Do not support.

The same is true of the HDMI 2.1a standard; This means that all new ports will, in theory, have the HDMI 2.1a tag, but this tag will not require SBTM.

While this legislation calls into question the standardization of HDMI 2.1a, the HDMI Forum argues that the goal is to provide the flexibility needed to give manufacturers the choice of these capabilities. However, they are required to clearly define the capabilities of each product.

What do you think about the capabilities of the HDMI 2.1a standard? How do you evaluate the HDMI forum legislation?


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