DIPOL Weekly Review - TV and SAT TV, CCTV, WLAN

ISKIP - a vehicle identification system.

The Road and Bridge Research Institute (IBDiM in Polish), the leading Polish research center engaged in a broad spectrum of issues related to road infrastructure, has developed the Intelligent Comprehensive Vehicle Identification System. The solution is unique in Europe and in the world, providing an unprecedented potential for the Police, the Border Guard, the Road Transport Inspection Service – ITD, the Internal Security Agency, the Central Bureau of Investigation and other special services. The main parts of the system are the network of Autonomous Measurement Stations located at the main roads and equipped with cameras for continuous monitoring of passing vehicles, and the Central Statistical System. ISKIP is able to track the movement of vehicles/drivers along with the recognition of their license plates, makes, models and colors. In particular, it will help to identify cars with false/changed license plates, look for vehicles wanted by the police, measure the average speed of vehicles over long distances. ISKIP operates in real time. The system can search for a specific car make and model on the basis of e.g. only one character from the registration number. This is achieved by loading into the memory of the computer system more than half a million images with detailed description of the make and model of each vehicle. After capturing the picture a of a car, the system is comparing it with the database and searching for identical features with those of the photographed car. On this basis, the car can be identified with a confidence level of 95%. Simultaneously with taking the photos, the measurement stations weigh the vehicles and measure the axle loads, enabling the identification of overloaded trucks.

(source: www.ibdim.edu.pl)

The system developed by a consortium led by the IBDiM works perfectly with the Central Register of Vehicles and Drivers (CEPiK in Polish), allowing for quick and seamless acquisition of information about the owners of vehicles e.g. in order to give them traffic tickets. Tests of the system are currently conducted in several places in Poland, including Warsaw. The system can be integrated with other elements of intelligent transportation systems, such as dynamic weighing systems (Weight In Motion), speed measuring systems, red light violation detection systems etc.

Today starts Securex 2016 trade fair.

Securex is the largest and most prestigious security industry trade fair in Poland and Central Europe. During the fair, leading suppliers of products and services for the protection of property and information, alarm systems, video surveillance and security solutions present their comprehensive range of products.

DIPOL invites installers, system designers and integrators, investors, everybody interested in CCTV, students of technical schools and universities. During this edition, we will show a number of new products that can be interesting for a wide audience. You can see in action the set of cameras awarded with Gold Medal MTP Securex 2016, 12 MP fisheye camera and PTZ IP camera. We will also present the newest generation of Hikvision CCTV cameras designed for extremely difficult light conditions, analog CCTV equipment providing FullHD image quality, network equipment for industry (PoE switches, media converters). We will demonstrate in action technologically advanced Sunell thermal imaging camera along with application scenarios. Installers of modern systems based on fiber optic cables will surely be interested in optical video converters for use with HD-TVI/CVI cameras. The complement of the offer will be 3D printer placed in SIGNAL rack cabinet.

Protection of recordings in Hikvision DVRs/NVRs against overwriting.

When the hard drive(s) in a DVR/NVR run out of space, the device can operate in overwrite mode or stop recording. Typically, users set the overwrite mode - the oldest recordings are deleted to make room for the new ones.

If a specific recording is important (e.g. an event has occurred), it must be blocked against the possibility of overwriting. To do this, the user should locally log on to the DVR/NVR and go to the list of recordings. Each item of the list contains a padlock symbol. By clicking on the (open) padlock, the user changes the attribute of the selected file to "read only". Recordings protected in this way are not erased by overwriting. It is also possible to switch the attribute of the entire hard drive to "read only", but it will completely stop recording on the disk.

The files with the symbol of closed padlock are protected against overwriting

The use of PTZ cameras in CCTV systems.

PTZ cameras are a perfect complement to fixed security cameras. They usually offer powerful optical zoom, up to 20x or 36x, and can be equipped with IR illuminators. Models without IR illuminators, e.g. K1666 usually have dome housings, whereas cameras with IR diodes have the lens mounted together with the IR illuminator on a movable head. The both types of PTZ cameras are designed for outdoor use and have housings with IP66 protection rating, which guarantees protection of the electronics and mechanisms against ingress of water. The maintenance of the cameras is similar and limited to ensuring the cleanliness of the optical components within the field of view.

CCTV systems integrating fixed and PTZ cameras are more flexible and can provide more detailed information. The fixed cameras ensure a general view of the covered area, but often do not give enough detail necessary in some cases. PTZ camera allows the operator to focus on the smallest details thanks to the appropriate zoom. For example, it is possible to read license plates of vehicles, identify people's faces etc. The control of such a camera is performed remotely, via a computer network or with the use of the DVR/NVR control panel, an additional control panel/joystick, the dedicated software.

The 2MP IP PTZ camera Hikvision DS-2DE5220I-AE K1798 has IP66 housing rating, so it is dedicated for outdoor operation. The zoom lens made of anti-reflective glass with high transmittance of infrared radiation and special diodes provide IR range up to 150 m. Together with the change of the optical zoom, the IR beam is appropriately focused, which helps to achieve the long range. The P/T mechanism can change the position of the optical axis of the camera at speed of 0.1°/s...400°/s (pan) and 0.1°/s...200°/s (tilt). In conjunction with 20x optical zoom and 16x digital zoom, it allows for detailed monitoring of large areas with total zoom up to 320x. Thanks to high sensitivity and advanced processing algorithms (3D-DNR,D-WDR, Defog, HLC/BLC) the camera can effectively operate in any environment.

DVB-T modulator Signal-400 - full support for HDCP.

HDCP (High-bandwidth Digital Content Protection) is a form of digital copy protection developed by Intel Corporation to prevent copying of digital audio and video content as it travels across connections. This protocol is designed to protect copyrights for multimedia files, providing encoding of high-definition content, e.g. HD-DVD, Blu-Ray, and protecting the content from being copied at every stage of the transmission. Producers participating in the program pay annual and variable fees, depending on the number of devices manufactured.

The SIGNAL-400 R86700 DVB-T modulator can inject into an antenna system
any HD content provided via its HDMI input

SIGNAL-400 R86700 is a multipurpose digital modulator (DVB-T - COFDM) with HDMI input and USB interface, capable of processing SD, HD and Full HD signals. Thanks to full support of HDCP, the modulator can distribute any high quality content provided via the HDMI input. The source signal may come from a multimedia player, DVR, Blu-ray player, PC, STB etc. The output RF signal in the form of DVB-T multiplex can be distributed via typical RF coaxial cables used in antenna systems and be received by multiple DVB-T televisions connected to the distribution network.

Transmission of HDMI signal to multiple receivers.

Signal-HD H3606 HDMI to IP converter enables the user to connect remote (up to 100 m) source of HD content to HD-enabled television/monitor, using one CAT5e/6 cable. The set includes transmitter and receiver units, as well as remote control extender for a Blu-ray/DVD player, STB etc. The major advantage of using IP protocol is the possibility of point-to-multipoint topology and multicast transmission. The IP signal coming from the transmitter may be applied to an Ethernet switch (e.g. N29915) to split it among multiple receivers. With suitable types/numbers of network switches, the user could theoretically connect up to 253 receivers. However, one network can distribute signal only from one transmitter. In order to connect more transmitters, it is necessary to create VLANs (Virtual Local Area Network), logically separated computer networks within a larger physical network. All the receivers in such a network will support the function of the remote control extension.

An application of the H3606 HDMI > IP converter/extender set and additional H3607 receivers

The additional receivers can be bought separately ( H3607, with RC extender, or H3605 - without support for remote control).

Some connectivity problems with media converters.

Ethernet media converters, changing the transmission medium from copper cables to optical fibers, are very popular, especially in the case of longer point-to-point links. The links can be many times longer than those based on twisted pair cables. Additionally, they ensure complete galvanic isolation which is needed in many systems for safety reasons. Despite the fact that Ethernet media converters do not require any configuration, some novice installers make mistakes preventing the normal operation of the links:

The most common cause of a "dead" link is the last case. So, when selecting media converters, the installer must check the specifications of the network devices that will be connected on the both sides of the link. In the case where the link should cooperate with various devices, ether 100 Mbps and 1000 Mbps, the solution is to employ media converters with auto-negotiation feature. With this choice, the users will avoid any problems associated with incompatibility of Ethernet ports.

Protection of the home LAN. Nowadays the home network can include several computers, televisions, network drives, consoles, media players etc. Along with the expansion of the network and due to a considerable cost of the devices, the importance of network protection against overvoltages is much higher. Voltage surges can come from both the AC power network and the signal transmission lines. The protection against overvoltages in the power network is provided by safety extension cords/strips with surge suppressors (varistors) and fuses. In the event of a voltage increase above a limit (typically 250 VAC), the fuses cut off the power for the connected devices... >>>more

The set of ULTIMODE media converters protecting all devices connected to a home LAN