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| Automatic Gain Control, an electronic circuit that amplifies the video signal when the strength of the signal falls below a given value | |
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| Automatically controls the shuttle speed 0~1/300,000 sec and adjusts the LUX sensitivity by the motor circuit. Which makes the light-receiving hole on a lens larger or smaller according to the amount of light received into the lens. Automatic Iris lenses are generally more efficient than the electric shutter since they actually control the amount of light reaching the sensor as opposed to simply adjusting shutter speed. | |
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| Auto adjustment that makes sure the white color we view directly will also appear white in the image is referred to as white balance. | |
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| A feature of the camera used to help correct an image with more light behind the subject being viewed and the subject appears dark without backlight compensation. | |
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| CCD Cameras are much more sensitive to power fluctuations, due to the fact that the CCD Sensors have 4 integrated processors compared to the one processor found on a CMOS sensor. CCD cameras usually have much better picture quality, resolution and color balance. | |
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| CMOS cameras have a less-expensive image sensor than CCD cameras and the other benefits of CMOS are small size and low-power consumption. | |
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| Controls the shuttle speed 1/60~1/100,000 sec and adjusts the LUX sensitivity by electronically. Recommended to use the cameras has a electronic shutter in the urban area or inside house, but not good for the bright places like beach. | |
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| A visible range of camera sees clearly under the normal daylight condition that light intensity level (LUX) is equal or more than the camera specified minimum illumination LUX level. | |
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| The horizontal or vertical scene size at a given length from the camera to the subject | |
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The HAD sensor is an abbreviation of the Hole-Accumulation Diode sensor newly developed by Sony. It is a photo sensor consisting of a hole accumulation structure added to an n+P diode. |
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Frequency of light, invisible to the human eye, used for covert surveillance and low light camera use. |
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A filter that filters out the red light to keep the image colors looking natural. |
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Light
emitting diodes, commonly called LEDs, are real unsung heroes in the
electronics world. Basically,
LEDs are just tiny light bulbs that fit easily into an electrical circuit.
But unlike ordinary incandescent bulbs, they don't have a filament that
will burn out, and they don't get especially hot. They are illuminated
solely by the movement of electrons in a semiconductor material, and they
last just as long as a standard transistor. |
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LUX
is a unit measuring the intensity of light and a CCTV camera requires
a certain amount of light produced by natural or artificial
illumination. |
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| A visible distance in the total darkness only using the built-in lighting source on the camera and longer visible distance can be obtained using other external lighting sources. | |
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| Short for Picture Element, a pixel is a single point in a graphic image and the quality of a imaging system largely depends on its resolution, how many pixels it can display. | |
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| The signal system used in America & Canada is called "NTSC". Western Europe and Australia use a system called "PAL for color & CCIR for B&W", and Eastern Europe and France use "SECAM". Without standards conversion, it is impossible to view a video program that is recorded in a foreign country without first converting it. | |
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| Version of Sony¡¯s high performance HAD (Hole-Accumulation Diode) sensor with improved sensitivity from the use of more efficient on-chip microlenses that made possible to minimizing lost light and improving the overall sensitivity per pixel. | |
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| Resolution is measured differently in a video imaging system then in a photographic system. The maximum number of light and dark lines resolved horizontally determines the resolution level of a video system and the higher TVL means the higher video resolution. Each line transition is counted and expressed in TV-Line (TVL) or in Lines of Horizontal Resolution (LoHR) rather than in cycles. | |
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Jet Security USA, Inc. / Toll: 1.866.321.5381 / Sales@JetSecurityUSA.com |
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