Types of Security Cameras
CCTV systems use many different types of security cameras, depending on the security needs.
DIGITAL SECURITY CAMERAS (HD) OVER COAX
CCTV systems are security products used by businesses to protect their interests. HD over Coax refers to the transmission of high-definition video and audio streams over coaxial cables that were previously limited to standard quality video.
There are several competing technologies in this category, including CVI, TVI, SDI and others. They vary somewhat in capability, but in general, the major benefits over an IP video system include:
- Low upgrade costs. Cameras can connect to existing analog coax cables, eliminating the need for new wiring.
- Simple installation and setup. Most products in this category are designed for near plug-and-play operation.
- No interference with networks. These systems can be operated in complete isolation from the data network, if desired.
- Support for 1080p high definition cameras.
HD over Coax is ideal for companies that have an existing analog infrastructure in place, would like to reduce the overall cost and are looking to upgrade their cameras to 1080p. It is also great for new installations, if your budget is extremely limited.
ZOOM (PTZ) SECURITY CAMERAS
A Pan-Tilt-Zoom (PTZ) camera is a specialized security camera that can change direction and zoom in and out based on commands given from a DVR. Some DVRs support remote control for PTZ cameras over the Internet using a mobile device or computer, allowing you to control the camera’s movement from anywhere in the world.
PTZ cameras can be used to cover much larger areas than stationary cameras with a full range of horizontal and vertical movement (pan and tilt respectively).
- PTZ cameras have an adjustable field of view, meaning they can capture large areas and also quickly zoom in to capture fine details in a scene, such as a face or license plate. These cameras can move in all directions and they are ideal as business security products and home security products. Camera systems provide the best evidence.
DAY AND NIGHT CAMERAS
This provides 24 hour security for your property. With infrared illuminators, these cameras are able to make distinctions between persons and objects when there is little or no light. Daytime images are in brilliant, accurate color with these security systems and at night, the images are recorded in black and white, but these images can be clearly seen.
Weatherproof security cameras are indispensible for active New York businesses because they are able to withstand extremes of temperature and constant shifts in weather conditions while still producing quality images for CCTV systems on a DVR. Businesses are often “hit” by intruders because there are valuable items inside the building.
Vandal proof camera and New York Security
New York is the largest city in the USA and the type of security required depends on the area, so we need to take protective measures. Vandalism is common in many areas and vandal-proof cameras are a solution to frequent camera damage.
An IP camera is a networked digital video camera that transmits data over a Fast Ethernet link. IP cameras (also called “network cameras”) are most often used for IP surveillance, a digitized and networked version of closed-circuit television (CCTV).
Benefits of IP camera over analog technology include:
- Remote administration from any location.
- Digital zoom.
- The ability to easily send images and video anywhere with an internet connection.
- Progressive scanning, which enables better quality images to be extracted from the video, especially for moving targets.
- Adjustable frame rates and resolution to meet specific needs.
- Two-way communication.
- The ability to send alerts if suspicious activity is detected.
- Lower cabling requirements.
- Support for intelligent video.
Automatic Number Plate Recognition
ANPR (Automatic Number Plate Recognition) / LPR (License Plate Recognition) is a versatile technology that is currently used in many different traffic applications. This includes for example access control systems, high-speed applications such as free flow tolling and enforcement and dragnet investigation. Industrial cameras are most typically used because of their real-time compatibility. When outfitted with the proper sensor, they offer the necessary sensitivity to capture high-quality images during short exposure times.
Certain regional peculiarities are crucial here, such as the size of the number plates; in Europe a horizontal resolution of 800 x 1000 pixels per lane is recommended. This grows to 1600 x 2000 pixels per lane for the USA, Middle East and China.