CCTV stands for closed-circuit television, also known as video surveillance. It is a closed or controlled system that sends signals to only a few monitors, unlike traditional TV, which broadcasts to the public.
People use closed-circuit television in homes and offices to reduce crime and at traffic signals to monitor traffic. Public parks and airports use it for safety. This blog will help you understand the CCTV acronym and how it works.
What is the CCTV Acronym?
The full form of the CCTV acronym is closed-circuit television. Closed-circuit means they use a local network of cables, not the internet, to monitor and send signals only to an authorised group, rather than transmitting them publicly.
History
A German scientist first developed the CCTV system, and the German military used it to monitor V2 rockets in World War II. This technology was launched on the market in 1949, and later it was used by American scientists during testing of the atomic bomb.
What is CCTV Camera System?
CCTV is a camera system used to detect and deter criminal activities and for safety. This system uses cameras to record activity and send the video to the NVR, DVR, phone, computer or laptop it is connected to.
Modern CCTVs have more technical capabilities besides recording. Although CCTV refers to many camera systems, it has become an industry-standard term for security and surveillance in both commercial and residential areas.
Essential Components of CCTV
Before discussing how it works, it helps to know the basic components of CCTV. Knowing these components helps you better understand how it works. CCTV consists of several components that work together. Some basic components are:
- One or more Cameras: These are the system’s eyes, recording live footage using image sensors.
- Cables and Routers: These are transmission systems that carry video from the camera to the recorder.
- NVR and DVR: These video recorders record, process and manage video for storage.
- Hard Disk or SD Card: These storage devices store the recorded footage for future use.
- Display Device: This can be your phone, laptop or computer to display the recording.
How Does CCTV Work?
Once you understand the essential components of a CCTV camera, you can easily understand how it works. Different cameras work differently, but a CCTV surveillance camera works simply by recording, transmitting, and storing. Here is how CCTV actually works.
Capture the Video
Cameras are placed at entrances, hallways, garages, stairs and offices to record live footage of entry and exit using built-in sensors.
Store the Footage
An NVR or DVR manages the recorded video and stores it on a hard disk in the monitor. These local networks keep the video private.
Display the Video
You can view the video on a monitor or remotely via your phone. This makes it easy to view and monitor your property anytime.
Types of CCTV Systems
Different types of CCTV systems are available nowadays. The primary types of CCTV cameras include digital, analog and IP cameras. Understanding these types can help you choose a better option.
Digital
These digital wireless cameras can save images directly to a computer without an extra device. But storing large files or videos requires a lot of space, so they are usually heavily compressed.
Network or IP
Internet protocol and network cameras use distributed artificial intelligence to support multiple cameras. They digitise the video by assigning an IP address to each camera and sending data to a network video recorder.
Analog
Cost-effective security cameras which capture video in analog form and transmit it to a recorder via traditional coaxial cables. They provide low resolution and require a hard drive to store data. They do not use the internet, which makes their data difficult to steal.
Common Uses for CCTV Cameras
CCTV cameras are mostly used in vulnerable areas or places with high footfall and a higher risk of theft or vandalism to help control and reduce crime rates. Even in homes and offices, CCTV cameras protect valuable assets. Common places where CCTVs are installed include;
- Malls: Entrance, exit, all floors, stairs
- Offices: Main gate, entrance, exit, floor cabins, stairs
- Homes: Main gate, hallway, driveway, garage, patio
- Schools: Entrances, parking lots, shared spaces, hallways
- Retail Stores: Aisles, parking area, inventory areas
- Warehouses: Loading area, inventory area, employees’ areas
Benefits of Installing CCTV Cameras
Installing CCTV cameras in your house, office building or commercial area offers several benefits. They not only protect your property but also help in resolving disputes by providing evidence. Some of these benefits include:
- Preventing crime
- Deterring vandalism
- Providing crime evidence
- Reducing security costs
- Providing peace of mind
- Improving customer experience
Conclusion
CCTV stands for closed-circuit television, meaning it does not broadcast data publicly like traditional TV. Instead, it uses local networks such as NVRs and DVRs to store data and send it only to authorised monitors.
These surveillance cameras capture video, transmit it through cables and store it in monitors for display. They are commonly installed in homes, offices, malls, retail stores, warehouses and schools or colleges to deter and reduce crime. If you are opening an office in a public or vulnerable area and need reliable professionals to install CCTVs, contact Spotlight Security UK LTD.