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Anonymous users2024-02-06This has to be said from the beginning.
First, the camera goes directly to the monitor. Cameras--- cables--- monitors. You can only watch, you can't record, you can't store.
If you want to record (using a camera as an example), the camera --- cable--- recording device --- monitor. You can watch and record. The video recording equipment here has been developed over several generations.
The first were video recorders, then long-delay video recorders (videotapes), then digital video recorders (DVRs) (hard disks), and then digital video recorders developed into server-level (DVS) (also hard disks). But now DVR and DVS are basically the same in terms of what they implement. Because some functions can be implemented with software.
The above is a camera time. Let's talk about multiple cameras.
If you have 4 cameras, the first is 4 cameras--- cables--- quad splitters--- video recorders, --- monitors. Do you see? Just added a four-screen splitter.
That is, it was originally a 4-way picture, and after passing through the four-screen splitter, it was all the way for the video recorder.
The current level of development. This is no longer the case. Because now we have entered the digital age.
There are already a lot of channels to choose from between the camera and the storage device. For example: fiber optic cables, network cables, traditional coaxial cables.
If you can't, you will use a different device for the transfer medium. The optical cable is used in the optical transceiver, and the network cable uses a twisted pair transmitter, both of which appear in pairs (one sender and one receiver). There is also a ** server (which itself has an IP address.
This brings us to the networking part). Then there is the camera itself is a webcam (it has an IP address, no need for a network server), and this camera has a fixed IP address, as long as you use this IP address to log in, you can operate this camera. This type of camera only needs a network cable.
Each project and each project are more or less different.
Hope that helps.
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Anonymous users2024-02-05Decoder ** head There are also some auxiliary materials (nails, slots, plates, etc.) to step into the line 360 degrees, the camera level needs a decoder and a control line, and a 24v decoder needs to set the protocol and address, and the others** do not need a control line with 12v.
If you want to record the video, install the hard disk on the DVR, and set up the recording on the DVR.
In fact, there are only a few ways of monitoring in the school, and there is no technology to speak of.
Do you know how to ask me again.
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