Specifications

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HD-CCTV SYSTEM
Example of HD-CCTV system conguration
The gure below is an example of using a HD-SDI transmission method, showing that various types of cameras are connected
with a HD-SDI DVR using the HD-SDI transmission technology to realize the system. In here, HD-SDI cameras, repeaters, DVRs,
etc. were used. A repeater can be used in the middle of a line to extend the transmission distance of the HD-SDI signal, and the
existing SD camera’s video signal can be changed to the HD-SDI signal through a converter.
Prospect of HD-CCTV system
The request for HD-CCTV by the users already accustomed to high video quality of HDTV are considered very natural and
expected. Price can be a burden but it is expected to approach the customer required level in near future.
The HD-CCTV system introduced for the rst time in 2009, started to be released in a full scale from 2012. According to IMS
research published in 2013, HD-CCTV will have full-scale growth from 2013 and will have average 64% growth rate to 2017,
and expected to have 1.4 billion market share. It seems that a number of sites requiring the high resolution such as important
facilities, banking sectors, etc. will be changed into the HD-CCTV during this period. With previous experiences of SD-CCTV
system design, installation, management, we are able to easily maneuver HD-CCTV products. We can operate small system
to large scale system with no problem. As an example, its installation at a place requiring high video quality such as highway
control system, casino, bank, etc. is being discussed in a full scale. If someone buys a new TV, it is expected to be HDTV. So, it is
only natural to expect that getting a new CCTV means the installation of HD-CCTV system in near future.
What is the weak point of the HD-CCTV system?
Short transmission distance?
The transmission distance of existing SD-CCTV is 300m or more when using a coaxial cable. The transmission distance of HD-SDI is about
150m~200m when using a coaxial cable exclusive for the HD-SDI. Of course, there may be a little dierence depending on quality of coaxial
cables. Even using the existing coaxial cable can transmit video at least 100m. For your reference, the transmission distance of the UTP cable(-
CAT5,6) for network communication is about 100m, and accordingly, the transmission distance may not be a weak point. In addition, using a
commercialized HD-SDI repeater or optical transmission converter can extend the transmission distance as much as one likes.
Remote monitoring(network) is impossible?
HD-SDI camera can be networked through a DVR or video server, so there is no problem in integration through a network. Users can also
monitor the HD video with their smart phones with the service provided through DVR. In security market, connection of camera to a storage
device(DVR) is essential, and this is why network monitoring is possible without any additional equipment.
Full-HD 1080p resolution is enough?
Full-HD video has 6 times better resolution than SD, but considering the aspect that SD camera’s video quality is deteriorated through analog
signal transmission and the degradation of still image due to interlace scanning at image sensor (composed of a eld of image frame taken at
two dierent times), the video quality dierence between SD class and HD class exceeds the 6 times dierence by far. In addition, realistically
most of the monitoring equipment(HDTV, LCD monitor, etc.) has the 1920x1080 resolution. The HDTV broadcasting also uses the 1920x1080
screen size, so you can do monitoring HD resolution at the most competitive price. Now, considering the reality that HDTVs are supplied in
a full scale just worldwide, the Full-HD 1080p resolution is expected to become the most competitive resolution for a considerable period.
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Feature comparison of HD-CCTV system
The following table summarizes the dierences between HD-CCTV, SD-CCTV and IP based system. In example, HD-CCTV
shows that the camera image can be recorded without being aected by network errors because the the most important part
of video transmission is using coaxial cable. This is just one of the key factors in the security system.
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