What Are the Advantages of 19pin hdmi？

Two aspects are particularly important for demanding gamers:

A high resolution for the best possible graphics and a high frame rate (FPS) for a smooth and lag-free display.

High-performance desktop PCs often have gaming monitors attached that support a higher refresh rate than most living room TVs. Hertz numbers of over 60 or even over 120 Hz are common, provided the hardware can also handle these speeds in high resolutions. Which HDMI cables are suitable for this?

Even for demanding gaming, Premium High Speed HDMI cables (HDMI 2.0) are still suitable in many cases. Especially with full details and ray tracing, 4K resolution pushes even highly equipped PCs to their limits and does not exceed 60 frames per second. At least 144 Hz is possible in the compromise resolution of p ( x ), which is popular with gamers. HDR is also supported.

However, the successor HDMI 2.1 in the form of Ultra High Speed HDMI cables is already a worthwhile investment for real future proofing the cabling and also for current high-end PCs. This enables 4K gaming at ultra-fast 120 Hz, p even up to 240 Hz. On the console side, there are already a few games on the Microsoft Xbox® Series X that reach 4K@120Hz. Televisions with HDMI 2.1 can also already be found in living rooms, even if they are still a long way from the mass market.

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A Short History of HDMI Connectors

If you have a device that produces a video and audio output which is necessary for the operation or the enjoyment of that device, you can either display it via an on-board screen, or send the signal to a separate monitor or display. Sending it will require some type of cable system with integral connectors.

That is a simple way to look at a somewhat complex story that spans many years of interconnect technology development. It begins with the Composite RCA standard for TVs in , moves through S-Video for VCRs and home computers in and VGA for IBM PCs in , and on to Component RCA and DVI in the &#;s. With the exception of DVI, these were all analog cable standards, and the signals carried were either audio or video, but not both. In short, you needed a lot of cables to make things work.

The early history of audio and video connectors

DVI took this a step forward by supporting digital video, but users who wanted to transfer audio and video at the same time still had to use up to five separate cables. It wasn&#;t until the introduction of the High-Definition Multimedia Interface (HDMI 1.0) standard in that these multiple cables were integrated into one.

With the introduction of the new standard, HDMI cable and connector acceptance began to grow through a twenty-year period of development that made HDMI one of the most used formats for both home and workplace audio video signal transfer. Shop Same Sky's full range of HDMI connectors.

What is the HDMI Standard?

A dozen updates to the original HDMI standard have been released since offering higher speed, increased bandwidth, better resolution, support for new broadcast formats, and various connector sizes.

The original HDMI 1.0 specification was developed by the HDMI Forum mainly to clean up the mess of cables necessary to move video and audio, along with improving functionality. The specification defined the basic capabilities of a single cable, digital audio and video connector interface system. The technology worked and, according to its creators, &#;continues as the leading digital video, audio and data interface that connects ultra-high-definition displays to a wide range of consumer electronics, PC, mobile, automotive and commercial AV devices. It also has expanded into enabling solutions for industries such as healthcare, military, aerospace, security, surveillance and industrial automation.&#;

The most recent version of the standard is version 2.1, released in November of . It supports a range of higher video resolutions and refresh rates up to 10K. It also supports High Dynamic Range (HDR) formats and bandwidth up to 48Gbps. The actual connector itself, however, is not changed.

Generation HDMI 1.0 HDMI 1.3 HDMI 1.4 HDMI 2.0 HDMI 2.1 Speed 4.5 Gbps 9 Gbps 9 Gbps 18 Gbps 48 Gbps New Features p Deep Color 4K@30FPS & 3D 4K@60FPS Up to 10K, Dynamic HDR, Ethernet, Variable Refresh Rate Initial Release December June May September November

HDMI Connector Types

An HDMI cable is composed of several shielded twisted pairs of wire that carry the video signal plus separate conductors for power, ground, and other lower-speed device communication channels. HDMI connectors terminate the cable and connect to the devices being used. Physically, these connectors are trapezoid in shape, with indents on two of the corners to allow for proper alignment when inserted. They are similar in appearance to USB connectors. There are five different types of HDMI connectors:

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Additional reading:
What to Look For in a Cable and Wire Harness Manufacturer

• Type A (Standard): holds 19 pins and three differential pairs. Size is 13.9mm x 4.45mm, with the female version slightly larger. Electrically backwards compatible with DVI-D.
• Type B (Dual Link): carries 29 pins and six differential pairs. Size is 21.2mm x 4.45mm. Meant to be used with very high-resolution displays. Electrically backwards compatible with DVI-D. This connector remains in the specification but has never been used in products due to its size.
• Type C (Mini): smaller than the Type A (Standard) size at 10.42mm x 2.42mm but with the same functionality and 19 pin configuration. Intended for portable devices.
• Type D (Micro): measures 5.83mm x 2.20mm. Carries 19 pins. Similar to micro-USB connectors and intended for small portable devices.
• Type E (Automotive): incorporates a locking tab to stop vibration disconnect and a shell to resist moisture and dirt. Intended for automotive applications. A relay version is available to enable interface with consumer A/V products.

The five HDMI connector types

All of these connectors come in both male and female versions and are either straight or right-angled with horizontal or vertical orientations. Female connectors are most often built into the source device and the receiving device. Adapters and couplers are also available as well as rugged connector versions for harsh environments.

Current Capabilities

The basic and most popular feature of HDMI connectors and cables is their ability to transmit both audio and video signals with a single cable without degradation. The latest version of the HDMI standard also incorporates features that are matched to the capabilities of the output device. These include:

• 4k resolution with 120 Frames Per Second (FPS) or 8k with 60 FPS to reduce input lag and increase response speed
• Variable Refresh Rate (VRR) to match the output device
• Support for High Dynamic Range (HDR) formats to improve video depth, detail, brightness and contrast
• Very low electro-magnetic interference (EMI)
• Backwards compatibility with earlier versions of the standard
• HDMI Cable Power to enable direct low voltage power via the connector
• Enhanced Auto Return Channel (eARC) support (with high-speed cable) to ensure full compatibility between devices
• Consumer Electronics Control (CEC) capability to allow HDMI devices to control each other and facilitate multiple device remote control with a single handheld remote
• HDMI Ethernet Channel (HEC) support to allow internet access without separate cabling
• Support for 3D formats and resolutions

HDMI Connector Pinouts

Other than Type B, the different HDMI connector types each house 19 pins, but the pin configuration for the signals that they carry differs from type to type. This means that within a particular type there is backwards compatibility, but care must be taken when designing or making cables that the right pin numbers are used for the different signals. Since each of the types cannot mate with those of a different type, there are no cross-connecting issues.

HDMI connector pinouts

The above diagram shows a typical Type A pin configuration. Individual pins can carry either data signals, clock signals, low voltage power, control signals, CEC, or HEC.

HDMI Cable Types

HDMI cables are available in several types:

• HDMI Category 1 &#; Standard Speed Cables:
• Standard (Category 1) &#; basic HDMI cable
• Standard with Ethernet (Category 1) &#; identical to standard cable but adds an Ethernet channel
• Standard Automotive (Category 1) &#; meets the same requirements as basic cable, but designed for automotive use
• HDMI Category 2 &#; High-Speed Cables:
• High-Speed (Category 2) &#; used for higher resolution video
• High-Speed with Ethernet (Category 2) &#; same as high-speed but with Ethernet capability

Other Design Considerations

PCB layout using HDMI devices can be critical in order to minimize crosstalk and signal integrity. Care should also be taken with designs using twisted wire pairs. Cables using twisted pairs can also suffer signal loss over distances approaching 50 feet due to attenuation. HDMI extenders can be used to increase this distance up to 300 feet.

HDMI technology is also not well suited to driving multiple devices at the same time. It cannot send multiple signals to separate devices and cannot send surround and stereo audio signals simultaneously.

HDMI Applications

In theory, any device that sends audio and video signals to another device, like a monitor, can use HDMI technology for the connection. This opens up a broad range of applications and uses, from consumer devices to business and industrial systems. Some of the current applications for HDMI include, but are not limited to:

• PCs and Laptops
• Monitors
• HDTV systems
• Blu-Ray DVD players
• Ultra HD players
• Game consoles
• Video projectors
• Cable and satellite boxes
• Home theater receivers
• Digital photography devices
• Smart phones
• Digital audio devices
• Video walls

Summary

HDMI connection technology is excellent for reducing cable clutter and complexity in systems generating high quality and high bandwidth audio and video signals at the same time. Changes in the standard over the years have allowed for improved data transfer speed and bandwidth and have added significant features, like Ethernet. The connectors and cable that make up this system are currently found on devices and systems used in home entertainment, workplace communications and the commercial and industrial markets. The HDMI interconnection format is currently one of the most popular and widely-used means to carry high-quality AV signals between a source device and a display.

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