Clever Geek Handbook

Mini HDMI: description, purpose of the interface

Mini HDMI - connector designed to transmit high-quality video and audio information with built-in copy protection protocol. Version 1.3 of this connector is characterized by increased throughput of this interface due to the increased synchronization frequency (340 MHz).

mini hdmi

Technology description

Type mini HDMI means that this connector has a smaller overall dimensions than the standard. This is due to the modern requirements of the miniaturization process. The standard connector of this interface (type A) has overall dimensions of 13.9x4.45mm, and the mini version (type D) is 6.4x2.8. So the difference is quite substantial. This technology is constantly evolving, today there are four versions of the mentioned connector, each of which uses the same hardware specification and cable. The difference is the increase in bandwidth and the type of information transmitted through the connector.

Application

HDMI mini In terms of bandwidth and functional capabilities, it is no different from the usual and ordinary type A connector. That is, it contains the same 19 contacts. The main scope of this interface - These are portable devices such as mobile phones, tablets, laptops, video players and camcorders, as well as many other similar equipment. The use of such a connector in the video cards of a personal computer is becoming a fashionable trend, since the space on the rear panel is quite limited. And since modern video adapters often support two universal standard DVI-I outputs, there is simply no room for an HDMI type A interface. That's why it was decided to use a smaller version of the connector.

hdmi mini

Mini HDMI cable

You should know that the length of such a wire should not exceed 15 meters. Types of connectors (type A and D), subject to quality performance, in no way affect the maximum length of the cord. Before proceeding with the selection of such a cable, it is necessary to clearly determine what length is needed. To do this, you need to understand at what places the connected components will be installed. If you can’t invest in 15 meters defined by the standard, then you will need to use several wires. However, in this case, you will have to purchase additional signal amplifiers. In addition, choosing a cord whose length exceeds two meters, you need to make sure that it has additional shielding, since without this option the cable will not be able to provide high-quality data transfer.

mini hdmi cable

Support for mini HDMI formats

This interface is capable of supporting all major types of video image formats, including NTSC, PAL, ATSC. The resolution of the transmitted picture is in progressive format 1440p, or 2560x1440. In addition, the Blu-ray standard and HD-DVD are capable of transmitting a maximum of 1080p. The mini HDMI interface supports color depth up to 48 bits, which is more than 280 trillion. colors, the refresh rate is 120 Hz. In addition, video technology is capable of supporting the following audio formats:

  • compressed (DTS, Dolby Digital and others);
  • multi-channel (DVD Audio, SACD);
  • uncompressed sound (PCM): supports up to eight channels with a sampling frequency of 192 kHz at 24 bits;
  • compressed sound with preservation of quality (Dolby TrueHD, DTS-HD MasterAudio).

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