leakage dark signal from the CCD sensor in the absence of a random event caused by light.
dark noise
noise (quantum)
a logarithmic nature of the dark current.
decibel ratio (db) between two electrical signals and values . Usually refers to the power, voltage can be used in the separation process and current.
dc
direct current.
de - multiplexing
the different video, audio, or data signals are multiplexed by the distance between source.
depth of field
the the nearest and most distant objects in a scene clearly displayed. Depending on the depth of field of F - stop and lens focal length. Increase the depth of field is greater when the F - stop the shorter focal length and the distance to the object is increased.
dielectric
an insulating material (non-conductive). Between the inside and outside of the core is shielded coaxial found cable.
digital signal
an electronic signal is represented by a binary number, as the microprocessor can be processed by the electronically stored or representing the memory.
dome
term type used smoked glass in front of the camera and the plastic housing that contains the usual bread and Discrete surveillance.
dos
disk CHIRUTOHEDDO and operating system being used. Work in a software package that allows computer hardware devices such as hard drives, floppy drive, screen, keyboard, etc.
dsp
digital signal processing. Signals.
duplex
a refers to a digital electronic circuit system that is capable of processing, the ability to simultaneously process two channels of information. Security cameras, dual multiplexer is used to describe a multiple records simultaneously in a multi-screen display mode between pictures.
dwell time
when relating Switchers This is a time of video and still images on the monitor Before replaced by the following articles picture.
eas
electronic monitoring. Retail stores to prevent shoplifting systems used by the tags attached to products that pass through the detectors activate an alarm when. In conjunction with surveillance cameras, these systems are often broadcast systems.
ebu
european union.
eia
electronics Industry Association. American Association has set a standard for video broadcasting that the United States and Canada (525 lines, and 30 frames per second).
electron beam
a electrons are concentrated magnetic interference direction.
emi
electro nominated. Item electrical interference caused by electro magnetic radiation equipment frequencies.
eng camera
electronic camera CCD camera coverage, normally refers to broadcasting and industry.
eprom
erasable programmable read-only memory. Electronic chips are used in a variety of security products and software for storing various steps research operations.
ergonomics
the man, machine and environment work to realize a very efficient way to maximize efficiency .
fibre optic
a telemetry and video signals transmitted using a long distance along the optical beam transmission FAIBAOPUTIKKUKEBURU constructed from high-density silica glass.
field
half one frame, either odd or even composed row. Pal system, which is the height and width 312.5 lines.
field view
the view lens.
fixed lens
a that can be seen through the lens of a pre-determined and fixed focal length. Focusing is a typical feature of iris control and choice. Available to suit a range of different size applications.
fly period
the signal to move back to the last time taken from the field, or line frame to the next frame or field starting line. Returnees period.
focal length
the also known as a center of the optical distance between the lens and focal lens point.
focusing ring
ring lateral to be able to get adjusted to correct focus.
foot - candela
unit of illumination. Candela 1 = 1 ft sq ft of light incident on the surface of the rumen, MOSHONPIKUCHA area.
frame
basic units in the previous two fields or a maximum of 625 lines (pal system).
frame chip
a transit-type CCD imaging element is expensive to manufacture quality of the camera is currently used in broadcasting. Many of this type of chip, the CCD chip to overcome shortcomings in the existing electronic equipment used in security cameras used to capture cameras.
frame store
an save images and digital video. Stand-alone unit or can be integrated into other equipment, such as high-speed scanning and video multiplexer MOSHONTORANSUMITTA transmitters.
frame switcher
a basic form, which allows multiple cameras to record a single type of vcr.
frame transfer
a CCD imaging device with the dual roles, but light-sensitive pixels in the charge transfer. As a result, the picture is smearing, which is the main drawback of security cameras device.
galvanometer
in this term, refers to this method works OTOAIRISURENZU. Changes in the light of the current level of 1 minute changes to the cause of induction coils, which in turn is the cause of motion correction to the law diaphragm.
gamma correction
a iris cameras used in the balance of brightness seen the camera monitor.
gen - Rock Act (external synchronization)
a synchronising cameras are a number of systems to make sure they all fields in the same time to create. This is used to prevent picture & quot; Bounce & quot; when switching camera and the overall quality to improve and update time when recording or Switchers multiplexers.
ground current
in loop using surveillance cameras The term refers to leverage the current cable is made as a result of the earth there is a potential for both ends of the existing cable. As a result, this is the noise introduced signal.
ground (interference) insulator
a transformer loop without directly connected to the input and output between the ground loop used to eliminate currents.
gui
(graphical user ). The term used to describe the interface between the user& 39;s computer screen. The current system used surveillance cameras to explain features such as touch screen to control equipment.
hardwired
refers security camera systems and equipment to control method using MARUCHIKOAKEBURU the controller and the device will be run between control. To be used only where the distance between the controller and the controller unit short.
hertz
the the measurement signal frequency. 1 = 1 kHz switcher sequential second.
homing switcher
term per cycle to be used to describe only one output.
horizontal resolution
the number of vertical lines can be solved picture.
horizontal register
part CCD shift to IMEJISENSADEBAISU the pixels from the charge, will be forwarded to each line. Then, the charge will be converted to the analog video signal.
illuminance
the amount of light, given the size of the waterfall. Be measured in a vacuum tube or solid state device lux.
imaging device
a the tube plate of light-sensitive surface, or solid array of light-sensitive, the electronic signal can be provided from an image created.
image intensifier
a devised using intense light through the light-sensitive screen phosphor used. Strengthen the performance of the camera used under low light conditions.
impedance
the Total current flow opposed to the AC electric circuit. Refraction
the ohms.
index ratio between measured by the angle of incidence angle of refraction of light. The index depends on the density of the medium. Medium-density, high productivity index.
infrared light
light, pink. Invisible to the human eye, naked eye.
infrared illuminator
light source, which is part of the infrared emission spectrum. Used to illuminate the scene at night to provide high sensitivity monochrome landscape cameras.
infrared transmission
method sending infrared signals from the infrared beam using. Where security camera signals to be able to transfer it is not possible to run cable. Signal degradation can be a long and bad weather caused by the introduction of unwanted conditions.
interference
effect electrical signal to an electrical circuit. Results of surveillance cameras in the & quot; Noise & quot;, signal and image, the festival picture.
interlacing
the process of combining the more bizarre frame.
interline transfer
a form a type of field CCD imaging devices are processed by the charge amount, according to the optical sensor is falling, and then will be forwarded immediately. This is the most commonly used form of the current security camera imaging device that systems.
ip rating
index protection refers to the level of protection provided by the housing equipment, or the ingress of dust oppose moisture.
iris
the Part of the lens is used to control the amount of light passing through it and get into the lens and the imaging device.
isdn
(Integrated Services Digital Network). Telecommunications network capable of transmitting digital signals have a maximum speed of 128 kb / sec.
lan
(local area network). Many computers connected to a means to enable each device connected to the communication between network.
laser
(light amplification by stimulated emission of radiation). This source is a security camera to be used to be very pure optical signal transmission along optical fiber cables, a very high-quality data and provide a signal transmission.
led
(light-emitting diode). Semiconductor production when stimulated by the photocurrent. These are the security cameras used as a source of some FAIBAOPUTIKKU transmission system, as a light source for illumination and scenes for use in monochrome light cameras.
lens
an focus on the optics used for imaging equipment camera.
lens calculator
a the calculator to calculate and provide the most suitable lens image when used with a given scene, the problem occurs when a particular camera.
lens hunting
a OTOAIRISURENZU open, or closed It is not found for, or the correct level.
lens mount
see c - or Mount cs - mount.
lens wheel
see lens preset calculator.
light sensor
a when activating the device exists and the amount of light sensors. Using a switch on / off the field or frame infrared illuminators.
line
the basic unit costs will be included in the light of this decline is proportional to the various points to scan line.
line how - to locked
refers on the common frequency AC synchronising camera.
looping switcher
refers switch to the type of signal anywhere unnoticed through the loop switch affected by the operation of the optical switch itself.
lumen
unit optical radiation measurement. 1 = lumen from the amount of light emitted by a light source candela.
luminance
brightness 1. Security camera refers to the portion of the video signal containing information about the scene brightness.
luminous flux
the light.
lux
unit lighting flow rate. 1 lux = the amount of light falling onto the surface of a uniform sq meters. be measured in square meters.
Bookmark it:
No comments:
Post a Comment