| megapixel | - Pixels are used as a unit of measure. in the security industry, it’s a measure of resolution. mega refers to 1 million, therefore, megapixel means one million pixels. if you have a 2.0 megapix...
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| power over ethernet | Poe allows ip (internet protocol) devices to receive power and data over existing lan (local area network) cabling; eliminating the need to install a separate power cable, simplifying installation... |
| sd card slot | Provides convenient offloading of video onto an sd card. |
| gang box mounting | Provides easier, more convenient installation of indoor dome cameras, via a double gang mount pattern. this feature allows the camera to be mounted directly to installed boxes without the need for... |
| rs-485 controls | Rs-485 controls allow camera settings to be changed remotely without the operator being physically present at the camera location. this is done by using an rs-485 controller which is typically set... |
| reflected light | - Scene illumination multiplied by reflectance. this is the amount of light returned to the camera and determines the quality of picture.
- Various surfaces in a scene reflect between 1...
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| sense-up | Sense-up automatically enhances dss (digital slow shutter) and keeps the shutter open for a long time to allow extra light into the camera to produce brighter images in low light conditions. |
| smart zoom | Smart zoom automatically digitally zooms in on areas the camera senses motion in to get a more detailed image and then zooms back out. |
| sun/rain shield | Some cameras come with an adjustable sun/rain shield to prevent glare and direct contact from the elements, in order to deliver the cleanest possible video signal. |
| dual nics | Some dvrs feature dual nics (network interface cards) to enhance security and throughput by enabling your ip cameras to run on a separate network. this minimizes degradation of other networked app... |
| local de-warping | Some fisheye or 360 cameras feature local de-warping which enables viewing of portions of the full video image produced by the fisheye without distortion. |
| peer-to-peer communication | Some ip-based door controllers in an access control system are independent of a network or pc work station and feature peer-to-peer communication which keeps data flowing, even if a server connect... |
| tampering detection | Tamper detection is a tamper notification feature that sends an alert if the viewing angle of the cameras changes, or if the viewing area has been blocked. |
| phase adjustable | The ability to delay the line locking process so as to align cameras fed from ac voltages of different phases. |
| loss detection | The automatic video loss detection feature allows you to program your dvr to alert you when your camera loses its signal due to power failure, bad weather or tampering. you can get an alert from a... |
| white level | - The brightest part of a video signal corresponding to approximately 1.0 volt (0.7 volts above the black level).
- Уровень белого. часть видеосигнала, электронным образом представляюща...
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| auto back focus | The camera automatically and seamlessly allows users to adjust focus of images, enabling quick and easy installation. |
| event notification | - The device will send a notification when a triggered event has occurred.
- A call from a ui automation provider to a client, in which the provider notifies the client of an event that...
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| switchbox | - The first-of-its-kind switchbox nvr delivers an ip network recording solution—without the complexity. the switchbox nvr features an integrated 4 or 8-port poe (power over ethernet) network swi...
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| hertz (hz) | - The number of variations per second (e.g. picture frames, alternating of the current, etc).
- Unit of frequency in the international system of units (si), abbreviated hz; replaces cps...
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| internet protocol (ip) | - The primary communications protocol in the internet protocol suite for sending and receiving data packets across network boundaries.
- A set of rules for how data is transmitted from ...
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| access control (physical) | The selective restriction of physical access to a physical location or other resource. |
| utp (unshielded twisted pair) | The standard cabling used for telephone lines. the standard ieee 802.3, 10baset, defines use of ethernet over utp for rates up to 10mbit/s. the general lan medium of choice for the 1990s. cameras ... |
| anti-tailgating | The term “tailgating” refers to instances when one person swipes their access card and another person or vehicle “tailgates” them on the entry. anti-tailgating is an access control security measur... |
| telemetry transmitter | The unit that is at the control position of a cctv system and contains the keys, joysticks etc. for the remote control of pan/tilt/zoom cameras. |
| electronic image stabilization | This camera feature automatically stabilizes your video images and minimizes the appearance of shaky images to produce steady, sharp images. |
| dynamic profile streaming | This camera feature enables you to create up to 7 different streaming profiles based on codec, resolution, and frame rate. it offers region of interest streaming capabilities for focused viewing o... |
| power over ethernet (poe) | This feature enables high-draw ptz camera to utilize power over ethernet (poe) on a single cat5 cable. |
| overwrite protection | This optional feature allows you to prevent files from being overwritten when the hard drive is full, or you can pre-program the dvr to overwrite recorded video to ensure continuous recording—it’s... |
| privacy zone masking | This security camera feature enables you to set privacy zones for select areas within the field of view, that need to be kept private while viewing and recording video. |
| video compression | Video compression is a process during which a video stream is analyzed and unnecessary parts of the data are discarded in order to make a large video file smaller in size. |
| unterminated | Video input of apiece of equipment, wired so as to allow the video signal to be fed to further equipment. does not necessarily include extra sockets for the extra cables. |
| progressive scan | - Video signals are generated using horizontal lines. progressive scan, also referred to as non-interlaced scanning, draws every line of an image in sequence. the main advantage with progressive...
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| 960h image sensor | View and record high-resolution video. a security camera with a 960h image sensor works with a 960h dvr to deliver a 33% larger image and provide sharper, more detailed video than standard dvrs wh... |
| concealed cable management | Where the camera video and power cables are fed through a built-in mounting bracket, protecting the wiring from vandals and criminals, and to provide a cleaner installation. for applications requi... |
| time/date stamp | With this dvr feature, the time and date of recorded images can be superimposed on the video while it is being monitored and recorded. this feature is ideal not only for easily identifying the exa... |
| scanner. | 1. when referring to a cctv device it is the pan only head. |
| start bit. | A bit preceding the group of bits representing a character used to signal the arrival of |
| twisted-pair. | A cable composed of two small insulated conductors twisted together. since both |
| zoom lens. | A camera lens that can vary the focal length while keeping the object in focus, giving |
| cctv installation | - A cctv system, or an associated group of systems, together with all
- A cctv system, or an associated group of systems, together with all necessary hardware, auxiliary lighting, etc.,...
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| differential gain | - A change in sub-carrier amplitude of a video signal caused by a change in
- A change in sub-carrier amplitude of a video signal caused by a change in luminance level of the signal. th...
ganancia diferencial; |
| differential phase | - A change in the sub-carrier phase of a video signal caused by a change in the
- A change in the sub-carrier phase of a video signal caused by a change in the luminance level of the si...
desfase diferencial; |
| attenuator | - A circuit that provides reduction of the amplitude of an electrical signal without
- Ослабитель (сигнала); подавитель (колебаний); магазин затухания а/т auto throttle автомат тяги
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at; atten; attn; аттенюатор; sound . atterberg limits in plastic soils, the water contents (determined by standard tests) which define the boundaries between the different states of consistency of plastic soils. also; atenuante; ослабитель; |
| blackburst (color-black) | - A composite color video signal. the signal has composite sync,
- A composite color video signal. the signal has composite sync, reference burst and a black video signal, which is usua...
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| serial port. | A computer i/o (input/output) port through which the computer communicates with |
| pulse. | A current or voltage that changes abruptly from one value to another and back to the |
| video monitor. | A device for converting a video signal into an image. |
| video printer. | A device for converting a video signal to a hard copy printout. it could be a |
| film recorder | - A device for converting digital data into film output. continuous tone recorders
- A device for converting digital data into film output. continuous tone recorders produce color photo...
фотонаборный автомат;; устройство вывода на пленки из компьютерного файла; |
| alphanumeric video generator (also text inserter) | - A device for providing additional
- A device for providing additional information, normally superimposed on the picture being displayed; this can range from one or two characters to f...
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| inserter (also alphanumeric video generator) | - A device for providing additional information,
- A device for providing additional information, normally superimposed on the picture being displayed; this can range from one or two ch...
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| video switcher. | A device for switching more than one camera to one or more monitors manually, |
| video matrix switcher (vms). | A device for switching more than one camera, vcr, video printer |
| video in-line amplifier. | A device providing amplification of a video signal. |
| transcoder. | A device that converts one form of encoded video to another, e.g., to convert ntsc |
| transducer. | A device that converts one form of energy into another. for example, in fiber optics, |
| video equalization corrector (video equalizer). | A device that corrects for unequal frequency |
| video framestore. | A device that enables digital storage of one or more images for steady display |
| demodulator | - A device that strips the video and audio signals from the carrier frequency.
- Демодулятор
dem; demod; demodulador; демодулятор; |
| translator. | A device used to convert one component set to another, e.g., to convert y, r-y, b-y |
| frame synchronizer | - A digital buffer that, by storage and comparison of sync information to a
- A digital buffer that, by storage and comparison of sync information to a reference and timed release of vi...
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| serial interface. | A digital communications interface in which data are transmitted and received |
| t1. | A digital transmission link with a capacity of 1.544 mbps. t1 uses two pairs of normal twisted |
| rs-170. | A document prepared by the electronics industries association describing recommended |
| pinhole lens. | A fixed focal length lens, for viewing through a very small aperture, used in discrete |
| rs-232. | A format of digital communication where only two wires are required. it is also known as |
| preset positioning. | A function of a pan and tilt unit, including the zoom lens, where a number of |
| photo multiplier. | A highly light-sensitive device. advantages are its fast response, good signalto- |
| tearing. | A lateral displacement of the video lines due to sync instability. it appears as though |
| lumen [lm] | - A light intensity produced by the luminosity of 1 candela in one radian of a solid
- A light intensity produced by the luminosity of 1 candela in one radian of a solid angle.
<...
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| zoom ratio. | A mathematical expression of the two extremes of focal length available on a |
| focusing control | - A means of adjusting the lens to allow objects at various distances from the
- A means of adjusting the lens to allow objects at various distances from the camera to be sharply define...
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| resolution. | A measure of the ability of a camera or television system to reproduce detail. the |
| pan unit. | A motorized unit permitting horizontal positioning of a camera. |
| pan and tilt head (p/t head). | A motorized unit permitting vertical and horizontal positioning of a |
| d-vhs | - A new standard proposed by jvc for recording digital signals on a vhs video recorder.
- A new standard proposed by jvc for recording digital signals on a vhs video recorder. dvr – dig...
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