1. Interface analysis

The interfaces of the set-top box include HDMI port, USB port, network port, serial port (reserved for debugging on the board) and AV interface. The computer interface includes VGA port, USB port, network port, HDMI port and serial port. Since they have the same interface, it means that they can connect.

2. How to connect the set-top box

Through the HDMI port of the set-top box: At present, general set-top boxes and computers are equipped with HDMI OUT ports, which only have the function of audio and video output and cannot be input. Unless the computer or set-top box is equipped with an HDMI IN port, the picture of the set-top box can be transmitted to the computer for display. But it doesn't make much sense. The set-top box can be directly connected to the display with the HDMI port.

Through the USB port of the set-top box: Because the USB port is relatively fast, it can be used to transfer large files with computers or download firmware, which is generally used by developers.

Through the serial port of the set-top box: the system of the set-top box can be debugged through the serial port, and the development of the set-top box program needs to be debugged through the serial port. It mainly runs the Android system and can communicate with the CPU of the set-top box for control and debugging. Now there is a debugging tool for USB to serial port, and the serial port of set-top box can be connected to USB communication of computer.

Through the network port of the set-top box: the network port is the fastest. Generally, the network port of the box reaches10/1000M, and some support1000 m, which can be used to connect the computer network port and push audio and video streams to the computer, which is equivalent to transmitting the real-time interface of the set-top box through the network port. In addition, you can also write the set-top box firmware through the network port, or test the network speed of the network port, and you must also test it through computer connection.

summary

The set-top box can be connected to the computer, mainly depending on the purpose of the connection. It is of little significance to simply display the picture, but it is essential for the developers of set-top box software and hardware to connect the set-top box to the computer during the development process.

However, the set-top box can be directly connected to the display. If the old monitor interface is VGA, if your set-top box has VGA output, you can connect it directly. If the set-top box doesn't have VGA, it usually has HDMI interface, so you can buy an adapter from VGA to HDMI. It should be noted that the interface should distinguish between male and female, and the male head has pins. If you have a computer and want to watch TV, which is a monitor, you can buy a switch. There are many on the treasure.

By the way, the common interfaces of monitors are VDA, HDMI, DP, DVI, etc. The main difference between these interfaces is the different display resolutions. The general output interfaces of set-top boxes are HDMI and VGA, and then the analog interface showerhead.

By the way, the set-top box can also be connected to a projector. Then there is the set-top box output image mentioned above. If HDMI can directly transmit audio signals, VGA and showerhead interfaces need additional speakers to output sound.