HDMI, the full name in English is High Definition Multimedia Interface, and the Chinese name is High Definition Multimedia Interface. HDMI can transmit uncompressed high-definition video and multi-channel audio data with high quality without the need for digital/analog or analog before signal transmission. /Digital conversion, which can ensure the highest quality video and audio signal transmission, so it is widely used.
HDMI is hot-swappable. There is a pin named Hotplug in the HDMI standard. After the HDMI cable is plugged into a device (such as a TV), the Hotplug pin will be pulled high, and the signal sending terminal (such as a laptop) will detect this high-level signal. HDMI signal will be sent. Therefore, the HDMI cable theoretically supports hot plugging.
However, this does not mean that hot plugging is 100% safe. This is because HDMI transmits very high-speed digital signals. For fast transmission, the anti-static protection circuit used when designing the transmitting and receiving chip generally can only withstand 5-8KV electrostatic voltage. Although it meets the standard, in real life, if the environment is dry and there are conditions for generating electrostatic voltage, electrostatic voltage of tens of thousands of V is common. Therefore, hot plugging may generate electric sparks and destroy the chip.
Therefore, in the well-designed source and display ends, ESD protection circuits are generally sacrificed for some capacitance margins. However, some machines do not have ESD protection circuits in order to save costs, and the chips may be burned when the static-charged HDMI cable is inserted.
In general, in order to ensure the absolute safety of the device, it is not recommended to hot-plug the HDMI cable. But if it's just accidental, it's okay. TXGA, a professional HDMI cable manufacturer, produces a variety of HDMI cable products, with sufficient inventory, fast delivery, support for customization, and one-stop purchase. Enter [Product Center] to learn more.
