How does the camera connect to the monitor?

How to connect the old monitor to the camera HD interface without hdmi port?

Usually, a VA or VGA interface can be used to establish a connection. There is no hdmi interface on the TV, which means that the TV does not support high-definition video input and cannot directly connect other devices (set-top boxes, players, etc.). ) use an HDMI cable. However, TVs generally have AV interfaces. You can connect other devices with an AV cable, and then switch the TV signal source to AV mode. If other devices don't have an AV excuse and only have an HDMI interface, you need to buy an HDMI-to-AV converter to connect the TV with other devices. The extended data TV box is connected to the hdmi-to-AV converter. The connection method is to connect the box to the hdmi interface of the HDMI converter, and then connect the 3RCA line to the AV interface of the TV through the AV interface of the converter, so that the audio and video can be output synchronously. Generally, the conversion process of hdmi-to-av converter requires high voltage, so there will be a power interface on the hdmi-to-av converter, which requires an external power supply of 5V0.5-1a.. The TV can be connected to the monitor and the VGA interface of the TV. The VGA signal output is audio-free, but the general HDMI-to-VGA converter has a 3.5MM audio interface, so you need to connect another 3. The MM audio cable is connected to an audio or television input interface to generate sound.

The webcam cannot be directly connected to the monitor to display images. Because the monitor is only a display device and has no decoding function, it needs to be decoded by the graphics card of the computer host and sent to the monitor for display.

The webcam can be connected to the computer host by wire or wireless. Wired mode usually uses a switch to facilitate the connection of multiple cameras, while wireless mode eliminates the influence of cable length and direction and is more convenient for construction.

Extended data:

The origin of webcam

The design of the world's first webcam originated from two scientists who wanted to be lazy.

199 1 year, the computer research center of Cambridge University only equipped a coffee pot in the main computer room. Scientists who were not in the main computer room often ran to the side of the coffee pot and found that the coffee was gone. In order not to make a vain trip to pour a cup of coffee, scientists Fraser and Paul began to study and assemble a device to know whether there is coffee in the coffee pot.

They pointed a camera at the coffee pot and wrote a program to let the camera take three photos every minute, and then sent the photos to the internal network of the research center. Thus, the world's first webcam was born.

References:

Baidu Encyclopedia-Webcam

How is the camera connected to the monitor?

The camera can only be linked to the host computer, but not to the monitor, because the monitor itself is an output device and is also connected to the host computer, so it cannot process the data of the camera.