DARK CURRENT
Leakage signal from a CCD sensor in the absence of incident light.
DARK NOISE
Noise caused by the random (quantum) nature of the dark current.
DECIBEL (DB)
A logarithmic ratio between two electrical signals or values. Usually refers to power, but can also be used for voltage and current.
DC
Direct Current.
DE-MULTIPLEXING
The process of separating different video, audio, or data signals, which were multiplexed at source.
DEPTH OF FIELD
The distance between the nearest and furthermost object in a scene which appear in sharp focus. Depth of field varies depending on the f-stop and focal length of a lens. Depth of field increases when the f-stop is greater, the focal length shorter or the distance to the object is increased.
DIELECTRIC
An insulating (non-conductive) material. Found between the inner core and outer shield of a co-axial cable.
DIGITAL SIGNAL
An electronic signal, which is represented by binary numbers, and that, can be processed by a microprocessor, or stored in an electronic memory.
DOME
Term used to describe a type of camera housing made of...
To view and download this full PLR article, you must be logged in. Registration is completely free. Once you create your account, you will be able to browse, search & downlod from our PLR articles database of over "1,57,897+" on 1,000's of niches and 200+ categories without paying a penny. Click here to signup...
