Common HDMI interface video converters mainly include HDMI to VGA converter, HDMI to AV converter, HDMI to SDI converter, HDMI to color differential component YPbPr converter, HDMI to S-Video converter, etc., the principle is to convert digital HDMI audio and video signals into analog video signals and analog audio output, some converters will support coaxial or optical digital audio output, the resolution generally does not exceed 1920*1080p
The steps for connecting such converters are generally as follows:
Step 1: Connect the HDMI output (HDMI host, such as computer, set-top box, Blu-ray player, PS3/4/5, etc.) interface with a standard HDMI cable to the HDMI input interface of the video converter
Step 2: Connect the output interface of the video converter (such as: VGA interface, AV interface, S-Video interface, differential YPbPr interface) to the display device (such as old TV, old display) containing VGA, AV, S-Video, and differential YPbPr interface (such as old TV, old display) using the corresponding cable; If the converter supports audio output, it is also necessary to use the corresponding coaxial audio cable, optical audio cable, lotus connector audio cable or 3.5mm audio cable to connect to the TV or external audio
Since there are video converters that convert HDMI to other video signals, there are also video converters that convert to HDMI signals in turn, such as: VGA to HDMI converter, SDI to HDMI converter, AV to HDMI converter, differential YPbPr to HDMI converter, S-Video to HDMI converter, SDI to HDMI converter, DVI to HDMI converter, etc., such converters generally only support up to 1920* 1080p HD resolution, some advanced support analog audio and analog video simultaneous input into audio and video synchronization digital HDMI signal, then output to HDMI display
The steps for connecting such converters are generally as follows:
Step 1: Connect the video signal output (such as DVD, VCD, set-top box, camera and other hosts) interface of VGA, SDI, AV, S-Video, SDI, DVI, differential YPbPr and other interfaces with the corresponding interface cable (VGA interface uses VGA cable, AV interface uses lotus head wiring, S-Video interface uses S terminal wire, etc.) to connect with the corresponding input interface of the video converter
Step 2: Connect the L/R left and right stereo audio or 3.5mm stereo audio to the audio input interface of the video converter using red and white lotus head audio or 3.5mm audio cable
Step 3: The HDMI output interface of the video converter uses a standard HDMI cable to connect with the HDMI interface display device (such as: monitor, smart digital TV, etc.), if the display device is a digital TV, use the remote control to switch to the input HDMI interface, so that the audio and video picture can be transmitted synchronously
Next is the DP to HDMI converter, this converter is relatively single, directly connect the DP plug to the DP output interface of the host, and then use the HDMI cable to connect the HDMI output interface of the converter with the HDMI input interface of the display
DP to HDMI converter connection usage diagram
Daily common audio converters are also talked about by the way, the general household is used more is digital audio to coaxial, optical fiber, analog audio output, and then connect to the audio; The more prominent representatives are HDMI audio splitters and HDMI audio converters
HDMI audio splitter generally does not affect the original HDMI signal, there will be 1 HDMI output, the principle is to copy and extract a copy of the digital audio signal in the HDMI signal, and then convert it into coaxial audio, SPDIF optical audio, L/R left and right channels and 3.5mm stereo audio output through the chip, which can not only be used for headphones, audio, power amplifiers, subwoofers, etc. with only analog audio input, but also support the use of power amplifiers and speakers with coaxial and SPDIF optical audio input
The principle of HDMI audio converter is to convert coaxial audio and SPDIF optical audio into L/R left and right channels and 3.5mm stereo audio output, which can only be used for headphones, speakers, amplifiers, subwoofers, etc. that only have analog audio input
There is also an audio optical transceiver used in industry, which is generally used in pairs, one is the transmitting end and the other is the receiving end; The principle is to convert the audio electrical signal into an optical fiber signal through optical fiber transmission, and then restore the optical signal to an audio electrical signal at the receiving end, and some audio optical transceivers also support two-way transmission of audio
Of course, there is an audio optical transceiver, then there must also be a video optical transceiver, the video optical transceiver is also used in pairs, the principle is similar to the audio optical transceiver, but the bandwidth occupied by the video optical transceiver will be larger than the audio, the transmitting end will convert the audio and video electrical signal into an optical signal, and the optical signal will be converted into an audio and video signal at the receiving end, and some also support infrared signal backhaul, USB signal, etc
In addition to the above, there is also Type-C docking station, Thunderbolt 3/4 docking station, the role of the docking station is to expand the HDMI interface, DP interface, VGA interface, DVI interface, USB interface, audio interface, network cable interface and other commonly used interfaces through chip conversion, which is very suitable for using laptops that need to expand the screen, USB interface, etc., connect the device to the docking station once when connecting and using, and then connect the lightning plug or Type-C plug into the notebook, If you usually need to take away your laptop, you only need to plug in a cable when you come back, which is very convenient to use
Post time: Nov-19-2022