An especially useful feature of network security cameras is audio detection alarm. It is usually used to complement other more typical forms of surveillance such as video recording and motion detection. In conditions where it might be too dark for video, or for areas that are not covered by the network security camera’s field of view an audio detection alarm can be used.
The usual triggers are specific sounds like a window breaking or voices and the event that follows can be to start the recording of a video camera, send a notification to alert the operator of possible intruders, or activate an alarm. It is the same as a motion detection device that will turn on security lights or an alarm. A very useful application is to use the audio alarm detection to trigger a security camera to turn to a predetermined area of interest such as a window. It is particularly paired with network security cameras because network cameras in a fully digital system are much more accommodating of digital devices.
Saturday, July 11, 2009
Thursday, July 9, 2009
Network Security Camera | Types of Lenses
Network security cameras use one of three types of lenses. They are either fixed, varifocal, or zoom lenses and each has its own strengths over the other types. The fixed lens in a network security camera offers only one field of view because the focal length is fixed, usually at 4 millimeters. The field of view is either telephoto, wide angle or normal.
Varifocal lens offer different fields of view because the focal lengths are not fixed and can do a range of lengths from 3mm to 8mm. The field of view has to be adjusted manually by the user and the lens requires manual refocusing whenever the camera's field of view is changed.
The automatic version of the varifocal lens is the zoom lens. It also allows for different fields of view but the lens does not need to be refocused when changing the field of view. The zoom lens in a network security camera also can hold focus within a range of focal lengths. The adjustment to the lens can be done manually or by remote control and the zoom capability in the specifications refers to the range between the network security camera's longest and shortest focal length.
Varifocal lens offer different fields of view because the focal lengths are not fixed and can do a range of lengths from 3mm to 8mm. The field of view has to be adjusted manually by the user and the lens requires manual refocusing whenever the camera's field of view is changed.
The automatic version of the varifocal lens is the zoom lens. It also allows for different fields of view but the lens does not need to be refocused when changing the field of view. The zoom lens in a network security camera also can hold focus within a range of focal lengths. The adjustment to the lens can be done manually or by remote control and the zoom capability in the specifications refers to the range between the network security camera's longest and shortest focal length.
Labels:
field of view,
focal length,
telephoto,
varifocal,
wide angle,
zoom lenses
Wednesday, July 8, 2009
Network Security Cameras With Megapixel Technology
Any network security camera that has the megapixel label in its specifications refers to the type of image sensor built into the camera. Megapixel image sensors are special because they can produce images with at least one million pixels. This offers a resolution that is, at minimum, twice the resolution a traditional analog security camera can provide.
The megapixel network security camera offers more than a typical security camera in field of view. A megapixel camera can provide a highly detailed image that can be useful for jobs like recognizing faces or reading a license plate. If the resolution of the image is not used to pull a high level of detail, then the megapixel camera can cover a larger area in a single shot than a non-megapixel network security camera would.
The megapixel network security camera offers more than a typical security camera in field of view. A megapixel camera can provide a highly detailed image that can be useful for jobs like recognizing faces or reading a license plate. If the resolution of the image is not used to pull a high level of detail, then the megapixel camera can cover a larger area in a single shot than a non-megapixel network security camera would.
Monday, July 6, 2009
Setting Up A Network Security Camera At Home
Network security cameras for small businesses and homes are available in complete setup kits. The steps to installing a network security camera are quite simple for anyone who is fairly apt in installing technological and mechanical gadgetry and who can install a piece of software on the computer.
Assuming the buying and planning steps are completed, it is a matter of mounting the security camera as planned and connecting the cables. If it is a wireless network camera, it will either come with a transmitter unit or will come built into the camera itself. We are assuming your home already is on a simple home network, the setup that is designed for multiple computers to share an internet connection. Once all the peripherals are connected, it is time to install the software which is basically loading the CD into the drive and clicking ok a bunch of times.
Assuming the buying and planning steps are completed, it is a matter of mounting the security camera as planned and connecting the cables. If it is a wireless network camera, it will either come with a transmitter unit or will come built into the camera itself. We are assuming your home already is on a simple home network, the setup that is designed for multiple computers to share an internet connection. Once all the peripherals are connected, it is time to install the software which is basically loading the CD into the drive and clicking ok a bunch of times.
Sunday, July 5, 2009
Network Security Cameras Offer Numerous Advantages
There are numerous advantages offered by a network security camera that just doesn't compare to traditional analog security camera systems. Much of the advantages come from being a fully digital system. This includes remote accessibility, better image quality, flexible integration possibilities and much more scalability.
Since it is possible to access, manage, and view live and recorded video by multiple users at any given time from remote locations all over the world, the introduction of network security cameras changed the way security systems were managed. It is now easier than ever to outsource the surveillance monitoring and video management to a third party security company.
Features like progressive scan and megapixel capabilities allow network security cameras to offer high resolution images that can deliver unprecedented levels of detail. If the network security camera is in a fully digital system there is minimal conversion, which retains quality, as opposed to an analog camera that converts from analog to digital.
Since it is possible to access, manage, and view live and recorded video by multiple users at any given time from remote locations all over the world, the introduction of network security cameras changed the way security systems were managed. It is now easier than ever to outsource the surveillance monitoring and video management to a third party security company.
Features like progressive scan and megapixel capabilities allow network security cameras to offer high resolution images that can deliver unprecedented levels of detail. If the network security camera is in a fully digital system there is minimal conversion, which retains quality, as opposed to an analog camera that converts from analog to digital.
Saturday, July 4, 2009
Welcome To Network Security Camera Knowledge Base
Thanks for visiting Network Security Camera Knowledge Base, a site created and dedicated to sharing knowledge gained through both primary and secondary experiences. Feel free to roam the information on this site and let us know your comments or concerns. If you are looking to install a network security camera for your home, small business, or a campus, then you have come to the right place. We hope we can help you in your endeavor to create a more secure environment regardless of the circumstance and a network security camera is perfect for anyone.
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