What is in an hdmi cable

   One of the core components of the HDMI cable is the core. Usually made of high-quality copper, these wire cores are like "blood vessels" of cables, which are responsible for transmitting electrical signals. They are carefully designed and arranged to ensure high-speed and stable signal transmission. In order to meet different bandwidth requirements, such as the transmission requirements of up to 48Gbps under the HDMI 2.1 standard, the quality and structure of the cable core are even more refined. Some high-end HDMI cables use silver-plated wire cores, which are not only more conductive, but also can effectively reduce signal attenuation, just like opening up an unimpeded "highway" for data transmission.

   The shielding layer is also a key component of the HDMI cable. It is like a solid layer of "armor", wrapped in a wire core to resist electromagnetic interference from the outside world. Electromagnetic interference is like a "troublemaker" in the way of signal transmission, which will destroy the integrity of the signal, resulting in noise, flashing or audio distortion in the picture. High-quality HDMI cables adopt multi-layer shielding design, including aluminum foil shielding and braided mesh shielding. Aluminum foil shielding can block most of the electric field interference, while woven net shielding is good at dealing with magnetic field interference. The two complement each other to protect the pure transmission of the signal.

   In addition, the HDMI cable also contains an insulation layer, which separates the wire core from the shielding layer to prevent short circuit and ensure the independence of the signal. The plug part is the "interface messenger" that connects the HDMI cable to the device. The metal contacts of the plug need to have good conductivity and wear resistance to ensure a stable connection. In addition, the shell of the plug is usually made of sturdy and durable material, which can withstand the test of multiple plugging and unplugging.

   These components inside the HDMI cable work together and perform their own functions, so that we can enjoy clear and realistic 4K images on TV and listen to the shocking surround audio effects in the stereo. The seemingly ordinary HDMI cable actually contains the crystallization of high-tech and exquisite design, constantly pushing high-definition audio-visual technology to a new peak.