More and more home users began to use computers to connect LCD TVs to watch a variety of movies, the connection method is generally to output the computer's video and audio signals through the graphics card and sound card respectively, but this requires more cables, and may also cause audio, video out of sync problems, so if you use HDMI cables, what will happen? Can HDMI cable output audio and video at the same time? The following Xiaobian will explain it to you.
1. HDMI cable can transmit uncompressed high-definition video and multi-channel audio data with high quality, the maximum data transmission speed is 5Gbps, and there is no need to perform digital/analog or analog/digital conversion before signal transmission, which can ensure the highest quality audio and video signal transmission.
2, HDMI cable support 5Gbps data transmission rate, up to 30 meters, enough to cope with a 1080p video and an 8-channel audio signal, in addition HDMI support EDID, DDC2B, so HDMI equipment has the characteristics of "plug and play".
3. HDMI cable can synchronously transmit lossless HD video and multi-channel audio, and the transmission signal type and performance of HDMI cable are directly related to its internal structure. The structure is high-density colored nylon woven mesh + high-quality injection iron powder magnetic core + double-sided 4-layer aluminum foil and high-density double-layer shielded woven mesh + pure copper tinned antioxidant wire core + plug copper shell gold plated 15U. According to the difference between the electrical structure and physical shape, the HDMI interface can be divided into four types: Type A, Type B, Type C, and Type D. Each type of interface consists of a socket for the device end and a plug for the cable end, driven using a low voltage of 5V, with an impedance of 100 ohms.
4. HDMI can not only meet the current highest image quality resolution of 1080P, but also support the most advanced digital audio formats such as DVD Audio, support eight-channel 96kHz or stereo 192kHz digital audio transmission, and only use one HDMI cable to connect, eliminating digital audio wiring. At the same time, the extra space provided by the HDMI standard can be applied to the upgraded audio and video formats in the future. Enough for a 1080p video and an 8-channel audio signal. And because a 1080p video and an 8-channel audio signal require less than 4GB/s, HDMI still has a lot of headroom. This allows it to connect DVD player, receiver and PRR separately with one cable.
Compared to DVI, HDMI interfaces are smaller and can transmit audio and video signals simultaneously. The cable length of DVI should not exceed 8 meters, otherwise it will affect the picture quality, while HDMI can transmit up to 15 meters. As long as one HDMI cable, it can replace up to 13 analog transmission lines, which can effectively solve the problem of cluttered wiring behind the home entertainment system.
