You must have seen these CCTV cameras installed in a bank, outside a mall building in the market or in a parking lot, outside someone's house, which are installed for 24-hour video recording to monitor a place.
Which is a very useful device from security point of view. Every day we read and hear in the news or news channels that thieves have entered a bank and committed a bank robbery or a big jeweler's shop has looted goods worth lakhs.
But if we talk about the time before CCTV, it was difficult to catch the suspect in such incidents, but with the advent of CCTV, there has been some reduction in such incidents. If we look at it, CCTV has become an integral part of our everyday life.
What is the full form of CCTV?
The full form of CCTV is “Closed-Circuit Television” which is a camera device. This camera device captures the picture of things from the Charge-coupled device sensor installed in its circuit board and shows it to us on the display device. Similarly, you can also know the full form of Navigation System GPS and about it.
How does CCTV work?
CCTV camera is mainly made up of four things. Which have different functions in this technology. Let us understand the working process of this CCTV –
- Camera Lense: One of the main parts of CCTV is the lens installed in the CCTV camera. Whenever the image of any person or object falls in the lens of the camera, its image falls in the sensor installed in the circuit board of CCTV. In technical language, the camera sends the image analog signal to the sensor.
- Sensor: The analog signal falling on the sensor creates a digital copy of that image and sends it to the main circuit board of CCTV. We can say that the sensor converts the analog signal into digital signal.
- Circuit Board: After the above process, the information collected by the sensor goes to the main circuit board. Here it is decided by the circuit board that the information is to be shown in the display device and the data is to be saved in the storage hard disk.
- Display and Storage Device: The main and last part of CCTV is the display device or screen on which you can easily watch the video recorded by the camera. CCTV with display has the option to save video footage. Which is saved in the hard disk by the storage device.
How many types of CCTV cameras are there?
Friends, let us tell you that there are many types of CCTV depending on their different uses. Some of which we have mentioned here –
- Day/Night CCTV Camera
- High-Definition CCTV Camera
- Pan Tilt Zoom (PTZ) Camera
- Infrared/Night Vision CCTV Camera
- Network/IP CCTV Camera
- Wireless CCTV Camera
- C-Mount Camera
- Bullet Camera
- Dome Camera
What is the history of CCTV cameras?
Friends, let us tell you that the history of CCTV camera device is about 80 years old. Friends, this is the year 1942 when Test Stand VII rocket was being trained in Peenemunde city of Germany.
CCTV was installed for the first time by Siemens AG company for video recording of rocket training, but friends, the person who was the brain behind this technology was German engineer Walter Bruch . Friends, Walter Bruch is considered the inventor of CCTV technology.
For your information, let us tell you that initially the video recording done by CCTV was black and white. But later, due to advanced technology, CCTV video recording started becoming colourful, which made the CCTV experience even more real.
Where are the uses and benefits of CCTV cameras?
Although friends, CCTV cameras are used in many areas, here we are telling about some important areas where CCTV plays an important role –
- In protection from thieves: Every day we keep hearing about incidents of theft somewhere or the other. But where CCTV is installed, the risk of theft is slightly less. According to a survey, the fact has come to light that wherever Security Surveillance CCTV is used, the incidents of theft have reduced.
- In Road Traffic Control: In today's world, the crowd of vehicles on the road has increased so much that we see road accidents every day. The biggest reason for these road accidents is people not following traffic rules properly. To ensure that people follow the traffic rules properly, the Transport Department has installed CCTV cameras on the roads so that those violating traffic rules can be strictly monitored.
- In the market and in the mall/multiplex: You must have read the news of shops being looted in the newspapers every day. But to prevent all these incidents, the administration has said that all of you should use CCTV video surveillance so that such incidents can be prevented.
- Face Recognition System: Now CCTV technology has become so advanced that it can recognize people's faces. Face Recognition technology is being used in many big developed countries of the world. We can see that whether it is a bank, airport, railway station or bus stand, Face Recognition system is used in such public places so that the person suspected of criminal activity can be identified.
- In reducing criminal incidents: Due to the installation of CCTV in people's homes, it has been seen that there has been some reduction in the graph of criminal incidents happening in cities. It has become easier for the police to collect evidence in any criminal incident and catch the criminal.
FAQs about CCTV Full Form
Q: What is the full form of CCTV?
The full form of CCTV is “closed-circuit television”.
Q: Which CCTV is considered best for security surveillance?
You can use Infrared/Night Vision CCTV Camera for Security Surveillance which can record videos in better picture quality both day and night.
Q: When and who invented CCTV?
CCTV was invented in 1942 by German engineer Walter Bruch.
Q: At how many frames per second is the video recorded by CCTV?
The video recorded by CCTV is recorded at 30 frames per second.