CCTV Camera’s full form is closed-circuit television.
CCTV has become an important part of the life of common people due to its utility. Wherever we go today, CCTV is installed from a security point of view, such as a bank, shopping mall, traffic, hospital, etc.
Besides the commonly known CCTV security camera, The full name of CCTV for other purposes will be explained in this post. And how does a CCTV system work?
In this post, we will list and explain all you need to know about the CCTV Camera Full Form.
Contents
What Is the Full Form of CCTV
The CCTV full form is closed-circuit television. The full form of CCTV cameras is closed-circuit television cameras.
CCTV is called ”closed-circuit” because the signals are not broadcast publicly, but are accessed by certain authorized users.
CCTV is a system where all the elements like video cameras, display monitors, recording devices are directly connected. It is used to monitor a sensitive area ( A particular area that needs continuous observation and where there is no one to watch all the time). It is very helpful to prevent crime because it monitors all the activities and records them. It is also used for traffic monitoring by detecting congestion and notice accidents.
Below are other important abbreviations related with CCTV cameras.
- PTZ CCTV camera full form: pan/tilt/zoom closed-circuit television camera
- PIR CCTV camera full form: passive infrared closed-circuit television camera
- PoE CCTV camera full form: Power over Ethernet closed-circuit television cameras
- IR CCTV camera full form: infrared closed-circuit television cameras
- CCTV camera DVR full form: closed-circuit television camera digital video recorder
- CCTV camera NVR full form: closed-circuit television camera network video recorder
You can also take a look at this post to get all types of CCTV cameras and the best picks of each kind.
Basic Components of CCTV
- Security Cameras (Analog or Digital)
- Cables (RJ45 or RJ59 Cables)
- Video Recorders (DVR or NVR)
- Storage Unit (usually a Hard Disk)
- Display Unit (optional, usually a monitor)
Places where CCTV’s are generally installed
- Banks
- Shops and multiplexes
- Casinos
- City Roads and Highways
- Building and Residential Apartments
- Corporate Houses
- Government Offices and Buildings
- Airports and Railway Stations
- Industrial plants etc.
How Do CCTV Cameras Work
The CCTV camera system at first only consists of security cameras and monitors. Afterwards, various recording units come out for video storage and review.
A CCTV camera system, with full form in English as closed-circuit television camera system, is showed in the following diagram.
Security cameras are used to capture live stream through the lens. After years of development, surveillance cameras can provide higher resolution images and clearer audio.
Even in total darkness at night, security cameras with color night vision technologies can also see clear images in true color.
Moreover, most CCTV cameras equipped with motion detection sensors can trigger alarms when there are human movements. They are a dependable safeguard against burglary and theft.
After capturing videos or audios, CCTV surveillance cameras transmit signals to the security camera recorders for documenting and replaying key moments. DVRs or NVRs are often employed in the CCTV camera system, realizing 24/7 reliable recording.
Note: Some high-end closed-circuit television cameras (the full form for CCTV cameras), also come with a micro SD card (slot) for local storage of motion events when they are detected.
Video clips recorded in the DVRs/NVRs or SD cards can be replayed anytime in your mobile phone, computer or TV monitor, even you are far away.
Benefits and Disadvantages of CCTV
CCTV today has become an important digital device for increased security as well as productivity.
Today, along with the common people, big companies also get CCTV installed in their homes and offices due to the many benefits of CCTV.
Following are some big CCTV Benefits and disadvantages.
| Benefits | Disadvantage |
|---|---|
| CCTV greatly reduces the chances of theft or robbery in any home. | The biggest disadvantage of CCTV cameras is that many times people install CCTV cameras without telling them and the privacy of others is endangered. |
| Due to CCTV, today we can monitor our office or any other place sitting at home, due to which office workers work more. | Due to dust and rain, the camera is often spoiled, which costs a lot on its maintenance. |
| CCTV provides important video footage in case of any crime, due to which the police or investigating agency gets a lot of help. | |
| CCTV camera in school and college ensures children’s security. This ensures that the children on campus are safe in every way | |
| Nowadays new night vision CCTV cameras can record clear videos even at night. |
For example, ZOSI 1NC-298 has a PIR motion detector and a built-in siren alarm. When detecting invaders’ movements, it can trigger siren sounds that are effective deterrents for the crime.
At the same time, 1NC-298 would send instant push notifications or emails to your mobile phone for you to take response actions and protect your properties.
8MP PTZ Wifi Outdoor Camera With Dual Lens - 1NC-298
- 4MP+4MP Dual Lens
- Dual Lens Achieves Ultra-wide Field Of View
- AI Person Detection and Auto Tracking
- Starlight Color Night Vision
- Smart Motion Alerts Push
- Two-way Audio & Customize Voice Alerts
- SD Card Storage & Cloud Storage
You can play with your pet on your phone anytime, or download it on your computer for a backup.
No matter you own small or big businesses, with or without Internet access, you can get inspired about which is the most suitable security camera in this blog.
Bonus: Click here to explore more interesting and incredible uses of CCTV surveillance cameras.
Types of CCTV Cameras
There are two different types of CCTV cameras based on different factors.
Benefits and Disadvantages of Analog Cameras:
| Benefits | Disadvantage |
|---|---|
| Cost: This kind of CCTV camera is significantly cheaper compared to IP type camera. | Frame rate and image quality: Due to the low frame rate picture quality may reduce. This kind of camera is not an idea where a lot of motion and those need to be seen in high detail. |
| Simplicity: Analog cameras are very much easy to install and run. Analog cameras send signals to the recorder where analog signals are converted and store over there. | Less coverage: Its coverage area is lower than IP type camera. More cameras require to install to cover the same area instead of IP type camera. |
| The technology is getting better: High definition (HD) audio and video can be captured and can send to a recorder system. | More cables: It require more cable such as power cable, Signal cable. |
| No encryption: This kind of signal is not encrypted. |
Benefits and Disadvantages of IP type Cameras:
| Benefits | Disadvantage |
|---|---|
| Multiple sensors: IP cameras have the ability to install three to four cameras in one, which can cover a large span of area. | Cost of initial set-up: Initial cost much higher than Analog CCTV system. Once IP CCTV is set up, It’s very much easy to use with lot more options. |
| Costs have gone down: Cost reduce when multiple cameras are used because it reduces cable cost. | Storage: Due to the high-resolution pictures IP CCTV systems require high storage space. |
| Resolution: A hi-resolution video can take. This kind of camera is ideal for those places where a lot of motion is found. | |
| Security: Audio-Video signal is encryption. | |
| Less equipment: IP cameras are not required an encoder-decoder, unlike Analog Camera. |
Unlike analog systems, IP security cameras have become the mainstream in the security industry by much clearer images, easy remote access, flexible installation and affordable prices, offering you superior protection, convenience, and peace of mind.
According to the way IP cameras are powered supply, there are
You can choose one kind of CCTV cameras that suits your situation.
For example, in the places without power such as in the RVs, boats and vacation home or even in the wild, battery-powered CCTV cameras, like ZOSI 1NC-291, are the best option.
4MP Wireless Battery Powered PT Secrity Camera - 1NC-291
- 4MP Super HD
- Long Battery Life
- Customize PIR Alert
- 360° HD View
- Flexible Mounting
- Enhanced Night Vision
And you can use PoE security cameras or WiFi security cameras in areas with access to home WiFi Internet like your driveways, gateways or storefronts.
Besides, CCTV cameras can be classified according to their power sources or shapes. You can read more insights about CCTV camera types in our previous post.
CCTV Abbreviations List
| CCTV Acronym | Definition |
|---|---|
| A/V | Audio / video |
| AVI | Audio Video Interleave – An audio-video standard designed by Microsoft. |
| AES | Auto electronic shutter – the ability of the camera to compensate for moderate light changes by adjusting the camera shutter without the use of auto iris lenses. |
| AGC | Automatic gain control – this feature adjusts the brightness level of the video to keep it at a consistent level. |
| BLC | Backlight compensation – a feature on newer CCD cameras that electronically compensates for high background lighting to give detail that would normally be silhouetted. |
| BNC | Bayonet Nut Coupling – A commonly used connection for audio/video (A/V) applications. Uses an amount similar to the way a bayonet knife is mounted onto the end of a rifle, BNCs are used to connect a variety of different coaxial cable types. After the plug is inserted, it is turned, causing pins in the socket to be pinched into a locking groove on the plug. |
| CAT5 | Category 5 (cable) – the type of cable that is used in networking applications. |
| CCD | CCTV security cameras produce images using CMOS or CCD (Charge Couple Device) chips. CCD chips are of higher quality and produce a better image than CMOS. |
| CMOS | Complementary metal-oxide semiconductor – Pronounced see-moss, CMOS is a widely used type of semiconductor. |
| CCTV | Closed-circuit television. |
| DVR | Digital video recorder – a digital video recorder is basically a computer that converts the incoming (analog) signal from the cameras to digital and compresses it, and stores it. The DVR replaces the function of a multiplexor (or quad or switcher) and a security VCR. There are many advantages of digital video recorders over their analog counterparts. |
| FPS | Frames per second – in digital video applications, refer to the number of video images that can be captured, displayed, or recorded in a second. Also referred to as the ‘frame rate’ or ‘refresh rate’. |
| GHZ | Gigahertz |
| JPEG | Pronounced “jay-peg” and stands for “Joint Photographic Experts Group” who designed the standard. This is a standard way of compressing images which works particularly well for photographic images (as opposed to graphic art). |
| MHZ | Megahertz |
| MPEG (or MPG) | Pronounced “em-peg” and stands for “Motion Picture Experts Group” who designed the standard. This is a standard way of compressing audio and video files. (It’s also the technology behind the now world-famous MP3 music files.) |
| NTSC | National Television Standards Committee – analog video standard used in North America and most of South America. |
| PAL | Phase Alternating Line – predominant analog video standard used in Europe and Asia. |
| POE | Power Over Ethernet – an adaptor that allows you to transmit power to a security camera through CAT5 (aka ethernet) cable. |
| PTZ | Pan-tilt-zoom – PTZ cameras allow you to adjust the position (‘pan’ is side-to-side, ’tilt’ is up-and-down) and focus (‘zoom’) of the camera using a remote controller. Due to this added functionality, these cameras tend to cost much more than non-PTZ cameras |
| RG59 | An RG-59 is a common coax cable used in CCTV applications. |
| RCA | An RCA connector sometimes called a phono connector or cinch connector is a type of electrical connector commonly used to carry audio and video signals. The name “RCA” derives from the Radio Corporation of America, which introduced the design by the early 1940s to allow mono phonograph players to be connected to amplifiers. |
| S/N Ratio | Signal to noise ratio; this number represents how much signal noise the camera can tolerate and still provide a good picture. The higher the number the better. |
| SECAM | Sequential Color with Memory – analog video standard used in France and other countries. |
| VCR | Videocassette recorder; an electronic device for recording and playing back video images and sound on a videocassette. |
