Screen splitter
In a television monitoring system composed of multiple cameras, a video switcher is usually used to make multiple images displayed in turn on a monitor. However, sometimes in order to allow the monitoring personnel to see the situation of all monitoring points at the same time, a multi-screen splitter is often used so that multiple images are displayed on one monitor at the same time. When several multi-screen splitters are used, it is possible to use the same number of monitors as the multi-screen splitter to display multiple screens from all cameras simultaneously. In this way, not only the number of monitors is reduced, but also the monitoring personnel can monitor the situation of each part at a glance. Commonly used picture splitters are four pictures, nine pictures and sixteen pictures.
The basic working principle of the picture splitter
Using image compression and digital processing methods, several pictures are compressed on the screen of a monitor at the same ratio. Some also have the function of a built-in sequence switcher. This function can display the full-screen images input by each camera in turn at the sequence and interval time on the monitor (just as the mainframe alternately switches the screen), and can use the recorder as described above The sequence and time interval are recorded. The interval is generally adjustable.
Main performance:
1. Fully compressed image, digitally processed color / black and white picture splitter;
2. Four-way (or nine or sixteen) video input with four-way (or nine or sixteen) loop output;
3. Built-in sequence switcher with adjustable time and independent switching output. According to the camera number, the full-screen image is switched and displayed in sequence, and the display time of the Minlu image can be optimized and adjusted by the user himself;
4. High resolution and real-time update rate. The picture index is 512 × 512 pixels, and the update rate is 25-30 fields / second;
5. It can realize 1/4 (or 1/9, 1/16) screen to full-screen screen zoom (revert to real-time full-screen screen) during video tape playback;
6. Compatible with standard SUPER-VHS recorder (some also have S-VHS interface);
7. With alarm input / output interface, it can be linked with the alarm system. When alarming, you can call the full screen and generate an alarm output signal to start the recorder or other related equipment. In other words, when an alarm signal is generated, the scene in the area related to the alarm will be displayed in a full-screen image and can be automatically recorded. The user can set the duration of the alarm and the duration of the recording. The number of alarm input interfaces is the same as the number of screen inputs;
8. Eight-character camera name. The user can program the name of each camera up to eight characters;
9. Alarm picture overlay, video signal loss indicator. This function is convenient for users to quickly check the cause of loss;
10. Set screen menu programming / calling. Simple programming, easy operation and friendly man-machine interface;
11. Electronic safety lock. Users can set their own passwords, and only allowed operators can operate the system.
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