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

Wiring renaissance - G.hn. The ubiquity of cable infrastructure encourages its use with the latest technology. Residential buildings have electrical installations that can be adapted for signal transmission, are also equipped with telephones, and - in urban areas - cable TV networks. The standard installations in new buildings, especially those in scattered locations, include MATV/SMATV systems for receiving FM/TV/SAT broadcasts, which provide at least one outlet in each room.
All these cables can be very effectively used for data transmission - say the originators of the "next generation" home network - G.hn - "next Generation" home network.
This consistent communications platform offering up to 1Gbit/s throughput within the home took the form of recommendations (Dec. 12, 2008), developed in the framework of the ITU (ITU-T G.9960). It specifies the physical layer, including the parameters of transmission, protection of its quality (QoS) and cost-effective energy use. The application layer is still under development - Media Access Control (MAC).
The new standard is supported by HomeGrid Forum - an industrial group consisting of, among others, such tycoons like Intel, Infineon, Panasonic, Texas Instruments.
The new platform is to standardize the use of existing household wiring for the purpose of quick and stable transmission of video and audio between home appliances, focusing on HD formats. It does not exclude the use of wireless devices. According to industry projections, the first series of processors tailored for G.hn will be available in the second half of 2010, and the final products should be offered in 2011.

Who wants the cables?

Television in Hungary. Since December 1st there is available digital terrestrial TV. The previous test broadcasts were compressed in MPEG-2, the current transmissions are using MPEG-4 AVC (H.264).
MinDig TV (the name of the DVB-T platform) is available for 60% of the Hungarians. It is broadcast from three transmitters, located in Budapest, Szentes and Kab-hegy.

Hungary - TV tower in Pecs

Advantages of central amplifiers - large MATV systems. Multi-staircase buildings require to use distribution amplifiers in each staircase or can be based on one, central set of channel amplifiers.
Using ZG-401/421/601 channel amplifiers, the installation can have up to 200 outlets, without a need of additional distribution boosters. Such a solution allows to provide broadcast signals from a single antenna cluster to multiple outlets, improving reliability of the whole system. Additionally, the installation and adjustment of the system is much simpler than in the case of band amplifiers - each channel's level can be precisely set according to application requirements.
It is easy to include additional signals, usually coming from a monitoring system - they are processed by the next channel amplifiers and do not interfere with adjacent channels (due to 40 dB or so attenuation of spurious signals generated by the modulators).

Notice! DIPOL e-Store introduces a new, more straightforward way of ordering channel amplifiers. The ZG-401 and ZG-601 series have been divided into groups. Ordering the desired channel the customer knows that the amplifier is available in the stock.

ZG channel amplifiers

Terra headend in local cable TV. Local cable TV operator in Warsaw provides signals to 500 apartments. So far, there were distributed 32 channels (retransmitted satellite programs). The operator decided to increase the offer by next 6 channels. For this purpose, the installation company proposed to employ TERRA headend, despite the fact that the original network is based on a headend coming from another manufacturer. The company was able to convince the investor that the MMH-3000 headend can cooperate with the existing equipment, providing high quality signals, ensuring flexible configuration and low operating costs - all for very competitive price.

This TERRA headend provides signals to 500 apartments

ULTISYSTEM - a unique and honored surveillance software - support for megapixel cameras. ULTISYSTEM provides versatile tools for managing CCTV cameras, both the latest IP CCTV devices and analog cameras installed in older, still functioning analog systems, incorporated (thanks to the suite) into city surveillance.
ULTISYSTEM is especially well prepared for cooperation with megapixel cameras. The software allows to enlarge any part of the image from any camera (digital zoom) and does not limit the number of the operations (i.e. the number of cameras with enlarged images). Despite the fact that the monitor shows only the expanded area, the system still records the whole image. The same function is available during playback of the recordings. ULTISYSTEM software supports megapixel cameras from IQinVision, ACTi, ULTICAM and other well known manufacturers.

Marking the interesting part of the image

The enlarged area

Professional monitoring system in a storehouse, a supermarket, a station or terminal hall. Kamera obrotowa ACTi ACM-8511 K1217 idealnie nadaje się do monitorowania dużych przestrzeni wewnętrznych dzięki możliwości sterowania PTZ oraz optycznego zbliżania obrazu. Znajduje zastosowanie w magazynach, sklepach wielkopowierzchniowych, dworcach itp.
Dzięki dziesięciokrotnemu zbliżeniu można uzyskać zarówno ogólny pogląd na wybrany obszar, jak i dostrzec najdrobniejsze szczegóły. Funkcja dzień / noc z systemem Sense Up (czułość 0,009 lx) pozwala na pracę w każdych warunkach oświetleniowych. Kamera dodatkowo wyposażona jest w szereg ustawień dotyczących kompensacji światła wstecznego, sterowania przysłoną czy balansu bieli, co jest wyjątkiem w tej klasie urządzeń.
Wykorzystując wbudowane kompresje MPEG-4 i MJPEG można dostosować parametry strumienia wideo do wymagań systemu. Kamera generuje obrazy w trybie multistream (różna liczba klatek dla oddzielnych strumieni) przy maksymalnie 25 kl./s w rozdzielczości D1.
Ponadto kamera wyposażona jest w dwukierunkowy strumień audio, sprzętową detekcję ruchu oraz wejście i wyjście alarmowe. Do zarządzania dodawany jest program NVR współpracujący z wszystkimi urządzeniami firmy ACTi. Poza tym urządzenie obsługiwane jest przez oprogramowanie ULTISYSTEM oraz NUUO.
Doskonałym sposobem monitorowania przestrzeni zewnętrznych jest kamera megapikselowa dzień / noc w zewnętrznej obudowie ACTi ACM-1231 K1511. Oferuje ona bardzo dobrą jakość obrazu o rozdzielczości 1280 x 1024 nawet przy niewielkim oświetleniu. Zastosowany przetwornik CMOS wraz z wmontowanym reflektorem podczerwieni umożliwia poprawne działanie nawet przy braku oświetlenia (0 lx).

Surveillance system for warehouses based on ACTi cameras

ULTIAIR - video monitoring of streets based on IP CCTV technology and wireless transmission. Professional ULTIAIR access points allow to build both the backbones of the systems and wireless access networks. The unique versatility of the devices is based on the implemented Linux software that allows different applications, from simple point-to-point links, indispensable in extensive IP video surveillance systems, to very sophisticated systems of data transmission. They are perfect for creating effective systems of city monitoring.

Main features of ULTIAIR family:

• Flexible configuration;
• Possibility of creating advanced network systems;
• Efficient data transmission (ULTIAIR Nstreme N2320 - up to 54 Mb/s in each direction);
• Weather-resistant housing (IP 66);
• Quick configuration of Access Point, Bridge, and HOTSPOT modes;
• Easy installation.

The diagram below presents a solution based on ULTISYSTEM software, ULTIAIR access points and ACTi IP cameras. The system can be expanded by using different modes of operation of the ULTIAIR devices (to be continued in the next issues). The system can utilize some cameras of local monitoring systems based on ULTIMAX DVRs and analog cameras.

Video monitoring of a road, based on ULTISYSTEM and ULTIAIR devices

ULTIAIR - license levels. ULTIAIR devices have two license levels, 3 or 4. First of all, the difference lies in the number of supported modes of work and HotSpot users. The license levels are compared in the table below.

(v3.x - software version)

ULTIAIR family consists of:

Bids on 4safe.pl portal. The 4safe.pl portal (in Polish) is the largest service for security industry in Poland, informing about events and new solutions in national market and around the world. For the last several years this professional team has become a strong and well recognized brand in the Polish market. Its opinion-forming nature, a wealth of articles (including technical ones), and tender section are the reasons for a great and still growing popularity among Internet users. 4safe is taking part in all trade fairs and exhibitions, as well as actively aktywnie uczestniczy też w życiu branży promując się na targach, konferencjach oraz w czołowych czasopismach branżowych.
Przetargi i oferty handlowe na 4safe.pl

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