LaView Cube Series, User Manual

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User Manual of Cube DVR Series
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6.1. TERMS
Dual-stream
Dual-stream: one high bit rate stream for the local HD store, QCIF/CIF/2CIF/DCIF/4CIF coding, other low bit rate stream for
network transmission, such as QCIF / CIF coding,
I Frame
I frame: intra frame image, remove redundant information to compress the transmittal data, also called key frames.
B Frame
B frame: According to time redundant of the source image sequence previously encoded frame and account the source image after
the encoded frame to compress transmittal data, also known as bi-directional prediction frame.
P Frame
P-frame: according to image frame lower than the previous „time redundant to compress transmittal data, also called predicted
frames.
Wide Dynamic
Bright parts and dark parts in particular can be seen very clearly at the same time. Wide dynamic range is a ratio between the
brightest luminance signal value and the darkest value.
S
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M
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A
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R
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T
SMART (Self Monitoring, Analysis and Reporting Technology): now widely used in hard disk data security technology, monitoring
system analysis Motor, circuit, HDD and disk head when HDD working, warn when abnormality, sometimes will automatically slow
down and back up data.
CVBS
Composite Video Broadcast Signal, consists of luminance and color signal from the composite baseband signal.
BNC
Coaxial cable connector, composite video signals or audio signals, commonly use 75 ohm connectors. BNC welding and should pay
attention to weld strength and remove burrs, or the signal wire and shield‟s contact will lead to a substantial attenuation of signal
strength.