In the era of increasingly developed network technology, video workers in all industries need to share and display video images through the platform, and professional recording software needs to be installed in the system when recording images. However, images of game consoles, cameras and other devices cannot be shared in real time. In this scenario, it is necessary to useVideo capture cardEquipment.
LvlianIntroduced an HDMIVideo capture card, support4K30Hz or 1080P120Hz acquisition and4K60Hz loop out, with external audio input and output functions.This collection card is made of aluminum alloy shell, which is sturdy and durable. You don't need to worry about crushing damage when you are in a bag when you are traveling. At the same time, it has good heat dissipation performance.It is brought by the charging head network belowLvlianThisVideo capture cardTake a look at the internal materials and workmanship.
The design of the box is based on the white background, with UGREEN printed on the topLvlianBrand, product 3D appearance diagram and key features: low delay, drive free, colorful glare atmosphere4K。
The bottom is printed with the inscription of detailed parameter information of the acquisition card.
Take out all items in the package, exceptVideo capture cardIn addition, it is also equipped with HDMI video connection cable, C to A/C data cable, manual, warranty manual, etc.
The HDMI video connection wire body is made of PC material, and the connection with the sub end shell is processed by injection molding in mold, which is more resistant to bending.
The HDMI terminal is a standard physical shape design, which can be directly plugged into the HDMI type video interface.
The supporting data wire is C to A/C type, and the sub end housing has an integrated anti loss rope design.
The conversion terminal is A+C type.
The Lvlian HDMI video capture card adopts an aluminum alloy shell and a streamlined sports car body design, which is durable and has a sense of speed.
The top is printed with "UGREEN" brand logo and "4K" sampling resolution.
The reset button, USB-C interface, HDMI OUT and HDMI IN ports are configured from left to right on the side, and the relevant identification words are printed below the ports.
The other side is equipped with 3.5mm input, audio line input, and 3.5mm microphone+headphone input ports, which can be connected to external audio devices such as microphone, headset, mixer, live sound card, and live chat is not cold.
The plastic shell at the end is provided with a heat dissipation hole to ensure that it is still stable and not easy to burn after a long time of use.
At the same time, the side of the heat dissipation opening is equipped with a number of LED 7-color indicators. After power supply is connected, the cycle gradually changes, and the game atmosphere is full.
The bottom is designed with circular anti slip silicone pad, which is stable and not easy to shake.
At the same time, the middle area is engraved with relevant words, model: CM540.
The length of C to A/C data line is about 53cm.
The length of HDMI video cable is about 154cm.
The body length of Lvlian HDMI video capture card is 129.66mm.
The width is 65.11mm.
The thickness is 18.19mm.
The size of the product in the hand is intuitive.
In addition, the measured weight is about 115g.
Disassembly of Lvlian HDMI video capture card
After seeing the unpacking of the video capture card of Lvlian, we will disassemble it and have a look at the internal materials.
First pry off the side cover plate and pull out the internal PCBA module.
The indicator light transparent plastic is arranged on both sides of the cover plate, and is fixed inside the housing through a buckle.
At the front of the PCBA module, three large chips are welded for HDMI signal distribution and conversion.Weld the USB-C socket, HDMI socket and 3.5mm headphone jack on the top and bottom of the PCB board.
The back is soldered with audio codec, memory, capacitor and other components.
The input HDMI signal is connected to an HDMI distribution chip of silk screen CH6001FN, and the model is divided into two channels, one for looping out, and the other for internal acquisition chip.
One chip from Lianyang, IT68051TE, is a dual port MHL2.2/HDMI2.0b receiver with 3D support. The signal rate supported by each channel is up to 6.0Gbps, and the bandwidth of each port is up to 18Gb/s.It also supports 12 channel I2S digital audio output and 24bit/192kHz sampling rate.
Close up of 27.000MHz external chip crystal oscillator of ITE68051.
Lianyang IT9325TE is used to convert digital video and audio input into USB data package output. It supports video input format conforming to HDMI2.0 and 4K60Hz SDR or HDR.
Close up of IT9325 external 12.000MHz chip crystal oscillator.
A memory chip from Huabang, model W25Q64JVSIQ, is an 8MB SPI memory for storing configuration information.
Weifeng Electronics VL162 USB Type-C multiplexer, with data switch supporting USB3.2 and QFN-28 packaging, is used for the forward and reverse insertion function of USB-C interface.
One MCU comes from the flash core micro, model FCM32F030C8T6, built-in M0 core, 64KB Flash and 8K SRAM, and is packaged with LQFP48.
MCU is equipped with a 24C02N memory.
The audio codec comes from Lingyun Logic, and its model is WM8960G. It is a low-power stereo decoder. It integrates a microphone and a Class D audio power amplifier. Its peripheral components are compact and suitable for portable devices.
Close up of filter capacitor at USB-C interface input end.
SS34 Schottky diode is used for input anti reverse connection protection.
TVS and self recovery fuses are used for overvoltage protection.
The signal line of HDMI input interface is soldered with ESD diode array for electrostatic protection.
The signal line of HDMI output interface is soldered with ESD diode array for electrostatic protection.
The USB - C bus data cable also uses ESD diode array for electrostatic protection.
The acquisition card has a number of TolMicro TMI3410 built-in, which is used to power the chips on the motherboard.The TMI3410 is a synchronous step-down converter with 5.5 V input and 2A output. Its operating frequency is 1 MHz, and the minimum output voltage is 0.6 V. It supports short circuit burping protection, overheat protection, and 100% duty cycle to meet the requirements of low-voltage environment applications.
Tuo'er TMI3410 data information.
An audio decoder from Lingyun Logic, model CS4344, is used for audio output.
The reset button adopts patch welding.
Welding of USB-C mother base plate.
HDMI mother base is welded to reduce the thickness.
Paste conductive cloth on the other HDMI female base, and contact the housing grounding.
Close up of 3.5mm audio input and output mother base, and welding of sink plate patch.
Take a look at all of them and have a family photo.
Disassembly summary of charging head network
The HDMI video capture card of Lvlian is made of aluminum alloy, which has good heat dissipation performance and is durable.The acquisition card has two HDMI interfaces, supports 4K30Hz video acquisition and 4K60Hz loop out, and supports external audio signal input and audio output monitoring.Connect the computer through the USB-C interface for video stream output to meet the requirements of devices with HDMI interface, such as computers, cameras, hosts and other live broadcast applications.
The charging head network learned through disassembly that this 4K acquisition card of Lvlian uses the lianyang chip scheme for HDMI video reception and conversion, and also uses Lingyun logic decoder for audio input and output functions.The internal HDMI mother seat is pasted with conductive cloth for grounding, and the PCB on the back of the chip is tinned for heat dissipation through a large area of vias.The internal structure is compact and the workmanship is solid. The aluminum alloy shell has excellent heat dissipation performance to ensure reliable and stable operation for a long time.