A PRESENTATION ON

[Virtual Presenter] Good morning everyone! It is my pleasure to present to you today on the topic of Closed Circuit Television (CCTV). CCTV is the use of video cameras for the transmission of a signal to a specific place and is commonly used for a variety of purposes such as security, surveillance, and monitoring. I'm looking forward to discussing in further detail what Closed Circuit Television is and how it can be used..

[Audio] CCTV (Closed Circuit Television) is a video surveillance technology used for monitoring areas or activities in different settings. It typically consists of multiple cameras connected to a central monitoring unit, which can be connected to a monitor and also allow for recording. The cameras available range from low-resolution domes to high-resolution pan-tilt-zoom cameras, each having a lens designed to provide the best view of the monitored area, and these lenses come in a variety of sizes and focal lengths. A Digital Video Recorder (DVR) is used to record and store the video on a hard drive, and it can be connected to a monitor or network. The cables used for connection to the monitor and video recorder vary according to the system, and the storage device could be a hard drive or cloud storage. CCTV systems can be used for security, surveillance, and monitoring purposes..

[Audio] CCTV employs the use of video cameras to transmit a signal to a certain set of monitors without being openly broadcasted. It utilizes point to point, point to multiple point, or even mesh wireless links, either constantly or when necessary for monitoring. This type of technology offers an increased level of security by enabling us to keep watch on areas that can only be seen in person. It is a significant security tool and has a multitude of uses..

[Audio] CCTV is a popular choice for a variety of purposes, such as keeping an eye on perimeter security in areas of medium to high security, watching the behaviour of those incarcerated, monitoring traffic, ensuring building and ground safety, keeping a lookout in situations where a human presence is hazardous, and obtaining a visual accounting of activities. Now, let us discuss Analog and Digital/IP CCTV systems and how they send and receive signals..

[Audio] It is essential for educators to understand the different types of CCTV systems. Analog CCTV system involves analog video signals which are sent to a Digital Video Recorder or DVR. They can either be powered directly at the camera or through the use of cables. Digital, or IP, CCTV systems make use of digital video cameras which can be connected through a computer network. It is important to have comprehensive knowledge of both types of systems in order to properly use and implement them..

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[Audio] Today I'm going to talk to you about different types of CCTV cameras. We have indoor, outdoor, IR Day/Night, Dome, Bullet, Hidden, Pan Tilt Zoom, and Fish Eye cameras. Each one has its own characteristics, and different applications. For example, an indoor camera is used in indoors areas, to film material without any external interference. An outdoor camera is used for the same purpose but located in outdoor areas. An IR Day/Night camera is designed specifically to work in low light conditions, making it perfect for night surveillance. A Dome camera, on the other hand, has a more discreet design, allowing it to blend in the environment. The Bullet camera is a high quality camera and it's usually used in areas with a lot of movement. We also have Hidden cameras, which are used for surveillance since they are tiny and can be easily concealed. Pan Tilt zoom cameras have the ability to rotate and zoom, allowing you to get a better view of the area you are monitoring. And finally, we have Fish eye cameras, which let us have a compact wide angle view, but with lower quality..

[Audio] Indoor cameras, as the name suggests, are used for indoor security purposes. They are designed to help protect homes, schools, offices, and hotels from potential intruders or threats. Indoor cameras offer the ability to detect and capture clear images, even in dark or low-light environments. CCTV-enabled systems can also be linked with alarm systems, providing an additional layer of security..

[Audio] Outdoor cameras are a type of CCTV designed for usage in outdoor locations. They are often used at entry and exit points with limited night lighting, and feature vandal-proof casing to protect them from tampering or damage. Such cameras are very useful for outdoor surveillance..

[Audio] The IR day/night camera are a type of camera that is best suited for areas where high security surveillance is needed, such as those used by military personnel, in parking lots, and in other high security zones. These cameras are perfect for outdoor surveillance applications and feature a day/night function that allows them to capture footage even in low light scenarios..

[Audio] Dome cameras are widely used in closed-circuit television (CCTV) systems and are easily recognizable by their distinctive dome shape. Typically mounted inside a dark enclosure, dome cameras are notable for their ability to rotate and tilt manually, making them an ideal choice for surveillance solutions applied in residences, gambling facilities, shops and eateries..

[Audio] Bullet cameras are becoming an increasingly popular type of video surveillance camera. Their small size and bullet shape make them suitable for both indoor and outdoor use. Many of them are also equipped with protective casings that guard them against dust, dirt, rain, and other damaging elements, making them an ideal choice for people who want to secure their homes or businesses..

[Audio] PTZ cameras offer a wide range of motion, being able to pan, tilt, and zoom as required. They can be controlled remotely through multiple mechanisms, such as joysticks, software, and mobile apps. This blend of functions make PTZ cameras invaluable when it comes to monitoring a given area..

[Audio] CCTV is a system used to monitor areas for security purposes. It comprises a camera with a lens connected to a recording device which is linked to a monitor. The camera captures the image and the recording device can store the video footage. The monitor displays the footage for observation. The most common type of CCTV is the bullet-type camera, featuring a lens, a housing which is resistant to unfavourable weather conditions, and a microphone for audio recording. In addition to the camera, a closed-circuit television system also includes a range of other components such as power supplies, connectors, and an alarm system for increased security..

[Audio] Fish eye cameras provide an expansive field of view, able to capture 180 or 360 degree panoramic imagery. There are two types of fish-eye lenses, a circular fish-eye lens which captures a complete circular image, or a full-frame fish-eye lens which extends to the entire frame. Both types are great for recording wide scenes for surveillance..

[Audio] CCTV systems make use of cameras that can be equipped with a variety of lens types, helping to adjust the surveillance capabilities in order to best meet the needs of the system. The two primary lens types are fixed and varifocal. Fixed lenses have a permanent size which can only be adjusted by focusing. Sizes commonly found are 12mm, 0.8mm, 06mm, 04mm, 3.6mm, and 2.8mm. Varifocal lenses can be adjusted during installation, providing the user with the ability to zoom in and out. Sizes commonly seen in varifocal lenses are 2.5mm to 8mm, 3.0mm to 12mm, and 5.0mm to 50mm..

[Audio] When selecting a camera for a closed circuit television (CCTV) system, criteria like its intended usage (indoors or outdoors, day or night surveillance), form factor, video codec, motion detection, wireless capability and viewing capability must be taken into account. This way, the chosen CCTV camera will ensure the best visibility and security..

[Audio] CCTV is a system used to monitor an area, composed of a camera with an image capture capability, a lens to focus the image, a monitor for displaying the image, a Digital Video Recorder or Network Video Recorder for storing the image data, cables to link up the system and a storage device with a direct current power supply. This system can be found in many locations, from public areas such as supermarkets, to airports or private areas like banks..

[Audio] When it comes to video monitoring, choosing the correct monitor is imperative to getting the most out of your CCTV system. Other components in the imaging chain should also be taken into account, but the monitor is the main factor in the quality of the image. Size, resolution and pixel count are all important things to consider when selecting a monitor, and understanding how they interact will lead to optimal results..

[Audio] Without greetings and without beginning with 'Today': We will be discussing the closed-circuit television system and in particular, the two types of video recorder, the Digital Video Recorder (DVR) and the Network Video Recorder (NVR). The video recorder is a critical component of the CCTV system. It receives, manages, stores, and records the video captured by the cameras. The DVR is one type of video recorder, designed to provide a simple recording and security solution. It records video from an analog camera directly to a hard drive in either a digital or analog format. The NVR is another type of video recorder. It is an IP-based system that records video from an IP camera. It stores the video on a dedicated server, which makes it easier to manage large amounts of video footage. It is important to understand the different types of video recorder available and how they work. That concludes our presentation on CCTV. Thank you for your attention..