THE HDMI® SIGNAL
MEANING HDMI®
HDMI® is an abbreviation for the term "High Definition Multimedia Interface"®. HDMI® is a high-speed digital connection and currently offers a data rate of up to 48 Gbps. It transmits high-resolution digital video and audio content, as well as management information.
INTERPRETATION
Depending on the quality of a cable, the nature of the signal to be transmitted changes.
The input signal can become unclear due to many external influencing factors. A poor signal will cause "chunking" and dropouts on the picture on the TV or other end device, plus the color depth will be lost. Thus, the entire television or gaming experience deteriorates. To avoid this, you should buy a high-quality processed HDMI® cable.
WHY OEHLBACH HDMI® CABLES?
- High quality sheathing of the cables, which do not show porosity even over the years.
- 24 ct. gold-plated contacts for permanent contact reliability. Use of absolutely pure or high-quality materials (conductors, shielding, ...), thus ideal electrical conductivity.
- From OFC to HPOCC, the material is also absolutely decisive for HDMI cables.
- Best possible attenuation properties due to excellent di-electrics, e.g. made of foamed Teflon.
- Here, on the one hand, the inner conductor is separated from the shielding and, on the other hand, the distance between the two is always kept 100% constant.
HDMI® FEATURES IN DETAIL
4K resolution
4K will replace the -standard in the near future and offers about 4x higher resolution - 4096 x 2160. 8K resolution 8K is the successor of 4K and has 16 times more pixels than Full HD. 8K resolution has 7,680x4,320 pixels.
21:9 Cinema aspect ratio
The 21:9 Cinema aspect ratio is a widescreen format used mainly in movie theaters and has an aspect ratio of 21 to 9. It is also known as the ultra-widescreen format and offers an even wider and more immersive display compared to the traditional 16:9 format.
32 digital audio channels
Digital audio channels are a way to carry multiple separate audio signals in a digital audio file or stream. 32 digital audio channels means that 32 separate audio signals can be transmitted simultaneously. These channels can be used for different purposes.
Auto Low Latency Mode
Auto Low Latency Mode (ALLM) is a feature available in some modern televisions and game consoles. It allows automatic adjustment of the TV's latency (delay) to provide an enhanced gaming experience. ALLM works by detecting the input signal being sent from a game console or other device, and then automatically putting the TV into the lowest possible latency mode. This reduces the delay between the player's action on the console and the response on the TV screen.
ARC - Audio Return Channel
Modern televisions are equipped with DVB tuners and can forward digital audio content to the AV receiver or other devices via the audio return channel.
eARC - Enhanced Audio Return Channel
is the further development of ARC and is implemented in the HDMI® 2.1 specification. The eARC specification provides for up to 32 audio channels, including uncompressed 24-bit/192kHz streams at up to 38 Mbps. 3D television Current Blu-Ray movies and video games are increasingly offered in 3D versions and can be played back with suitable HDMI cables.
CEC 2.0, Deep Color 30/36/48-bit
CEC 2.0 stands for Consumer Electronics Control 2.0 and is a standard that allows different devices to communicate with each other and control their functions automatically. CEC 2.0 extends the original CEC standard and provides additional features such as device detection, improved command support, and enhanced audio capabilities. Color depth is usually specified in bits. Cables conforming to the current HDMI® standard offer more than 281 trillion colors with a color resolution of 48 bits.
Deep Color
Deep Color is a term that refers to the ability of a device to support a higher number of color gradations and a greater color depth. 30/36/48-bit refers to the number of bits used for color depth. The higher the number of bits, the more shades of color can be represented and the more realistic the image looks.
Dolby Vision
Dolby Vision is designed specifically for use in movie theaters, televisions, and other devices to provide an enhanced visual experience with higher contrast and greater color depth. What makes Dolby Vision special is that it uses dynamic metadata to adjust HDR image quality during playback. This means that in addition to providing higher brightness and contrast than traditional Standard Dynamic Range (SDR) formats, the format allows for dynamic adjustment of image quality to deliver the best possible picture on any device.
Dynamic HDR
Dynamic HDR is a technology used with High Dynamic Range (HDR) content to achieve even higher picture quality. Unlike static HDR, which uses a unique HDR metadata set for the entire content, Dynamic HDR can adjust and optimize HDR metadata for each individual scene or even frame. Dynamic HDR can adjust the brightness, contrast, and color space of the image in real time to match the characteristics of the content and playback devices in question. This results in improved picture quality as Dynamic HDR provides viewers with a more realistic and natural representation of highlights, shadows, contrast and colors.
HDMI 2.1 certified
HDMI 2.1 is the latest version of the HDMI standard used to transmit digital audio and video content between devices. HDMI 2.1 provides higher bandwidth and support for higher resolutions, frame rates, and color depths compared to previous HDMI versions. When a device is designated as "HDMI 2.1 certified," it means that it has successfully passed all HDMI Forum tests and requirements to confirm compliance with the HDMI 2.1 standard. The certification ensures that the device supports the required bandwidth and features to be compatible with other HDMI 2.1 compliant devices and provide optimal picture and audio quality.
HDMI CEC Automated A/V Control
HDMI CEC (Consumer Electronics Control) is a feature that allows HDMI devices to communicate with each other and be controlled over a single HDMI cable. Automated A/V Control is a specific application of HDMI CEC that allows the control of multiple devices in an A/V system to be automatically synchronized. For example, with Automated A/V Control, you can turn on a device such as a Blu-ray player, and it will automatically turn on the TV, select the correct input, and turn on the sound system. This feature makes it easier to use multiple devices in a home theater setup or multimedia environment.
HDR - High Dynamic Range Image
HDR (High Dynamic Range) is a technology used in the creation of images and videos to achieve a wider dynamic range than traditional image displays. A dynamic range refers to the difference between the lightest and darkest areas of an image. Unlike traditional images, which are captured and displayed in a limited dynamic range, HDR content can capture and display a wider range of colors and brightness levels. This means that the images and videos with HDR technology can display more realistic and detailed colors, shadows, and highlights.
HDMI CEC
HDMI CEC (Consumer Electronics Control) is a feature that allows HDMI devices to communicate with each other and be controlled over a single HDMI cable. Automated A/V Control is a specific application of HDMI CEC that allows control of multiple devices in an A/V system to be automatically synchronized. For example, with Automated A/V Control, you can turn on a device such as a Blu-ray player, and it will automatically turn on the TV, select the correct input, and turn on the sound system. This feature makes it easy to use multiple devices in a home theater setup or multimedia environment.
HEC - HDMI with Ethernet Channel
HEC (HDMI Ethernet Channel) is a feature included in the HDMI specification that allows Ethernet signals to be sent over the same cable used for HDMI video and audio signals. With HEC, you can connect devices like TVs, set-top boxes, and Blu-ray players directly to your network without the need for a separate Ethernet cable. For example, when you use HEC, you can connect to a smart TV to access online streaming content without the need for a separate Ethernet cable. You can also view files from other devices on the network directly on your TV or play streaming audio over the network. One of the requirements for using HEC is that both devices that are to be connected must support this feature. You should also make sure that your HDMI cable supports the HEC function, as older cables may not be compatible with HEC.
QFT - Quick Frame Transport
QFT (Quick Frame Transport) is a feature included in the HDMI 2.1 specification that helps reduce delays and latency in the transmission of video signals. QFT can be especially useful when using game consoles, set-top boxes, and other devices that require a fast response time. QFT minimizes the delay between the input of a video signal and its display on the screen. This is achieved by optimizing the processing speed and signal transmission. This allows gamers to react faster to changes on the screen, which is especially beneficial in action-packed games. QFT can also help achieve better synchronization of audio and video signals, as delays in processing the video signal can also affect the synchronization of the audio signal.
QMS - Quick Media Switching
QMS (Quick Media Switching) is a feature included in the HDMI 2.1 specification that helps reduce delays when changing frame rates and resolutions. When QMS is enabled, the device can quickly and seamlessly switch between different frame rates and resolutions without the image freezing or going black. This is especially useful when you want to display different applications or content on a TV or monitor that have different refresh rate and resolution requirements.
VRR - Variable Refresh Rate
VRR (Variable Refresh Rate) is a feature included in the HDMI 2.1 specification that helps reduce screen tearing and judder when playing video. With VRR, the display adjusts the refresh rate to match the actual frame rate of the video instead of using a fixed refresh rate. This ensures that the display displays each frame for as long as it needs to before moving on to the next frame.
Video compression DSC 1.2
DSC 1.2 (Display Stream Compression) is a method of video compression included in the HDMI 2.1 specification. It enables higher resolution and higher frame rate video signal transmission. DSC 1.2 is a lossy compression method that removes some data from the video signal to reduce the amount of data that must be transmitted. DSC 1.2 can be used to transmit 8K resolution (7680x4320 pixels) at a frame rate of up to 60 Hz or 4K resolution (3840x2160 pixels) at a frame rate of up to 120 Hz. It can also be used when transmitting HDR (High Dynamic Range) and Deep Color video.
OEHLBACH HDMI® CABLES
Our Oehlbach cables support all current HDMI® features. Discover exemplary HDMI cables like the Carb Connect Ultra, the Black Magic or the patented Flex Evolution, from our extensive range.
Carb Connect Ultra
Carb Connect Ultra is the successor to our legendary Carb Connect MKII. The Ultra High-Speed HDMI® cable offers breathtaking quality in 8K at 50/60 Hz or 4K up to 120 Hz. The innovative inner conductor with hypercrystalline copper (HPOCC) ensures an unprecedented transmission quality due to its extremely high degree of purity.
DISCOVER
Black Magic
This high-speed HDMI® cable ensures limitless home theater fun. The additional data channel (Ethernet channel) enables the connection of Internet-enabled AV components, such as Blu-ray players or AV receivers, without the use of an additional network cable.ENTDECKEN
Flex Evolution
The Flex Evolution Ultra High-Speed HDMI® cable offers stunning quality in 8K at 50/60 Hz or 4K at up to 120 Hz. It has a specially developed registered patent plug with integrated bend protection. Due to its design and material composition, this allows for optimal protection of the cable against cable breakage.DISCOVER THE ENTIRE HDMI® RANGE
Have we aroused your interest in further HDMI products? Then explore our entire HDMI range here