majority of user acceptance and quickly carry out the implementation . Compared IPNC construction , similar to
the IT building , construction personnel , topology design , traffic design , equipment selection nodes have higher
requirements. Third, use HDCVI system entirely consistent with the standard definition systems , analog camera
plus DVR device plug and play deployment of systems to interoperate based DVR . Compared IPNC use cameras ,
etc. often need to set initialization operation , in addition to the presence of abnormal risk or configure network
communication protocol compatibility problems caused . Even the application , IPNC plus NVR systems , such as
the promotion of Onvif standardized protocols , the ease of use is still not comparable with the analog system .
In addition, because HDCVI using multiple signal cable transmission technology, the use of a coaxial cable to
complete the transmission of video signals and two-way video and audio data, audio and video synchronous
transmission and reverse transmission control signals, such as head rotation, zoom control, etc. further reduce the
complexity of the construction and installation.
More importantly, because HDCVI technology not only take into account the practical value and adapt over long
distances, without delay, transmission and strong interference, and complex deployment scenarios, more
cost-effective competitive advantage. Based on high-definition video surveillance system HDCVI technology will
remain with the original analog SD system considerable cost, the cost of an equivalent system, to experience the
charm of high-definition monitor.
System Solutions
HDCVI HD solutions , mainly HDCVI analog cameras and DVR technology form the basis of the subsystem . In DVR,
NVS aggregation nodes as devices with analog cameras using a star topology deployment. Video surveillance
systems HDCVI technology not only in the use and installation consistent with standard definition analog camera
system , user can have the same interactive experience , the transmission medium can also be directly followed SD
system coaxial connectors. Construction without additional deployment of personnel assembled to learn a lot of
professional knowledge , the quality of the cable , the connection process is also no special requirements , fully
inherited the advantages of analog SD system. New construction process requires new training does not exist at
the time of deployment , alterations can easily achieve a smooth transition of legacy systems based on a seamless
upgrade .
HDCVI technology products for users, based on monitoring the scene to choose the right camera ; choose DVR
adequate access channel based on the number of monitoring points ; choose the right capacity hard drive based
on a predetermined recording time , you can build a high-definition surveillance system. Throughout the selection
process and the subsequent analog surveillance system installation , commissioning work with traditional SD
almost the same age . The only difference is that the selection of hard disk capacity , taking into account the high
definition video monitor , the video stream is increased significantly compared to D1 . To simulate high-definition
surveillance system 1280H format , for example, each channel encoded data to generate the equivalent of the
720P is more than 2 times D1 era , when selecting the hard drive, you need to use hard disk capacity equal
multiples .
HDCVI technology can transmit 500 meters of high-definition video signals required in the design of the system ,
the distance between the camera and the DVR should not exceed this range. Within this coverage , ideal for
typical applications and 16 points below the video surveillance . Transmission range in excess HDCVI application
model , it is recommended to use multiple DVR networking structures typical applications , which cover each DVR
monitoring points within range and try to balance the number of access for each DVR .