The HDMI (High Definition Multimedia Interface) interface is a fully digital video and audio transmission interface that can simultaneously send uncompressed video and audio signals, and is widely used. There are several types of HDMI interfaces:
1 HDMI Type A (Standard HDMI) features: The most common HDMI interface type, with 19 pins, supports all HDMI standard functions, including audio, video, and CEC (Consumer Electronics Control) signal transmission. Size: The interface width is approximately 13,9mm, and the thickness is approximately 4:45mm. Application: Usually used for devices such as televisions, game consoles, computers, DVD players, etc.
2 HDMI Type B (Dual Link HDMI) features: Designed with future high-resolution requirements in mind, it has 29 pins and provides dual link functionality, but it is rare in the market and almost not widely adopted. Size: The interface width is large to meet the data transmission requirements of dual links.
3 HDMI Type C (Mini HDMI) features: A smaller HDMI interface designed for portable devices, with 19 pins and the same functionality as Type A, but smaller in size. Size: The interface width is about 10-42mm, and the thickness is about 2.4mm. Application: Mainly used for portable devices such as digital cameras, camcorders, and some tablets.
4 HDMI D-type (mini HDMI) features: It is further reduced on the basis of Mini HDMI (i.e. HDMI C-type), also using 19 pins, but with a smaller size, retaining the same functions as Type A. Size: The interface width is about 6.4mm, and the thickness is about 2.8mm. Application: Suitable for smaller portable devices such as smartphones and ultra-thin devices.
5 HDMI E-type (Automotive Connection System) features: Designed specifically for automotive applications, it has stronger anti-interference capabilities and a special locking mechanism to prevent loose connections caused by vibration. Size: Similar to Type A, but with additional mechanical locking device. Application: Commonly used for audio and video transmission in car entertainment systems.
The five types of HDMI interfaces each have their own characteristics and applicable scenarios, meeting the needs of different devices and scenarios. When choosing an HDMI interface, it is necessary to consider the compatibility of the device and the required video and audio performance.