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No. 26/2012 (June 25, 2012)
Holiday break
The next issue will be available on August 27.
Modern technologies stood on the threshold and...
A challenge for modern telecommunications is video transmission in fixed and mobile networks. In a large part it was the subject of this year's ANGA Cable trade fair in Cologne (June 12-14).Over 400 exhibitors from 33 countries presented to an international audience a number of interesting and proven technologies in this field.
On the front there were relatively new broadcast technologies, i.e. OTT and HbbTV, and the concept of building the "last mile" of fixed networks as Passive Optical Networks (PONs).
Most exhibitors noticed that the fair reinforced the technical trends, but without significant increases in investment.
The development of OTT is hampered in Europe by inadequate infrastructure, especially by the lack of data centers and companies that, similarly to Netflix and Hulu in the U.S., could challenge the existing broadcasters. Incidentally, the first European tests are carried out by American companies in the U.K.
HbbTV gained wider popularity only in Germany, Benelux, France and Great Britain. In other countries, the implementation of this technology has not moved beyond the testing phase.
The deployment of FTTx networks is a tug of war - who should finance the ventures. They are postponed by telecom operators and governments.
Europe lacks the capital investment, regulations, and strong market demand, so the stalemate may last for the next few years.
Modern technologies have stood on the threshold and... wait.
The development of OTT is hampered in Europe by inadequate infrastructure, especially by the lack of data centers and companies that, similarly to Netflix and Hulu in the U.S., could challenge the existing broadcasters. Incidentally, the first European tests are carried out by American companies in the U.K.
HbbTV gained wider popularity only in Germany, Benelux, France and Great Britain. In other countries, the implementation of this technology has not moved beyond the testing phase.
The deployment of FTTx networks is a tug of war - who should finance the ventures. They are postponed by telecom operators and governments.
Europe lacks the capital investment, regulations, and strong market demand, so the stalemate may last for the next few years.
Modern technologies have stood on the threshold and... wait.
The term OTT TV (Over-The-Top Television) is defined as transmission of video content bypassing the traditional distribution channels (terrestrial and satellite broadcasting, cable TV). Coming out from the "trenches" of established TV broadcasting implies the transition to the Internet, thus the new way of distribution is also known as ITV (Internet TV).
Siemens Over-The-Top Swipe (OTT Swipe) is a solution that utilizes web-based technologies to create a high quality viewing experience by streaming OTT content through already existing networks. The videos can be downloaded and watched on connected TVs, STBs, tablets, smartphones and PCs. They can also be conveniently "swiped" from one device to the other, e.g. from mobile devices to televisions in order to view them on the big screens.
Siemens Over-The-Top Swipe (OTT Swipe) is a solution that utilizes web-based technologies to create a high quality viewing experience by streaming OTT content through already existing networks. The videos can be downloaded and watched on connected TVs, STBs, tablets, smartphones and PCs. They can also be conveniently "swiped" from one device to the other, e.g. from mobile devices to televisions in order to view them on the big screens.
HbbTV, a combination of digital television and the Internet, enables the reception of satellite, terrestrial and cable TV channels, as well as access to new services such as video on demand (VoD), interactive games, electronic newspapers, YouTube videos, photo albums.
The television programs and new services are selected via thematic portals (as the websites on the Internet), offering much greater choice than the current programming of TV channels.
The television programs and new services are selected via thematic portals (as the websites on the Internet), offering much greater choice than the current programming of TV channels.
The binder that connects all the methods of content delivery and presentation is fiber optic infrastructure. PON technology (Passive Optical Network) is capable of providing Triple-Play services (television, Internet, telephone) to the subscribers via single optical fibers. In PON systems, the OLT (Optical Line Termination) at the service provider's site broadcasts signals to all premises sharing multiple fibers. The signals can be transmitted over distances up to 20 km, without a need for regeneration (powered active devices are only at the provider's and consumer's nodes).
A concept of passive optical networks in buildings was presented by DIPOL company (click on the diagram above).
A concept of passive optical networks in buildings was presented by DIPOL company (click on the diagram above).
"Engagingly about Antennas" - 11th edition.
This year's edition of the DIPOL's photo competiotion started on June 1st.The rules of the competition and the pictures sent so far
We invite everyone to participate!
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The global village Sylwester Nieduzak | Somewhere in Poland Aleksander Pietrzak | Antenna city Patrycja Jankowska |
Splitting CCTV signals into two paths
The signals from n-cam 680 M11274 compact cameras have been split by the active video splitter RV-4/8 M1704 located in the most suitable place of the cable system. The passive baluns Etrix 4VP M16662 allow for transmission of the signals to the distant guard booth located at the entrance gate via UTP cable. With QC-904R M4014 color quad switcher/processor, the guard can simultaneously display images from all four cameras, as well as select one or two of them.
The installation fully protects the DVR against unauthorized access, both physical and by LAN (network functionality has been omitted in the guard booth).
Coverage of the London 2012 Olympic Games on multiple HD televisions.
Traditional methods of displaying TV broadcasts and other video content on multiple televisions include solutions based on splitters, HDMI cables, HDMI extenders which allow for distribution of HD signals in several areas. These solutions are flexible, but the areas (distances) are strongly limited by the HDMI standard. More complex systems may also be vulnerable to failures (many active devices and connections).Another solution, based on DVB-T modulator Signal-751 R86751, is presented below. The source HD signal coming from any device equipped with HDMI output is converted into RF channel in DVB-T standard, which can be easily distributed via coaxial cables. The RF signal can be split by typical TV splitters.
The high output level of the RF signal from the R86751 modulator (97 dBuV) allows for direct distribution of the signal to multiple televisions, without a need for additional amplifiers.
Distribution of an HD satellite channel with the use of DVB-T modulator Signal-751 R86751
Such a solution has many advantages. The most important are:
- only one active device (high reliability)
- single connection to power supply network
- easy deployment of the cabling (coaxial cables and RF splitters)
- possibility of distributing other channels (e.g. DVB-T broadcasts)
- the lengths of the RF cables can reach several hundred meters, the number of TVs can be extended to several hundreds (using RF amplifiers)
- possibility of using televisions without HDMI inputs nor DVB-T tuners (using external DVB-T receivers e.g. A99250)
Fiber optic cables in buildings.
Installers of fiber optic cabling inside buildings should use cables that meet the basic requirements of fire safety. The jackets of the cables have to be made of LSZH materials (Low Smoke Zero Halogen) that reduce the amount of toxic and corrosive gases emitted during combustion. The jackets of all indoor ULTIMODE cables are made of low smoke zero halogen flame retardant poly-olefin. Additionally, the cables are very flexible, for example the minimum bending radius of ULTIMODE IDC duplex cables is only 20 mm.The latest concept of fiber optic cabling in buildings is based on easy access cables such as ULTIMODE BS, which, due to a special structure, allows for simple and fast installation of optical fibers in multistory buildings, with minimum number of connections.
If some cables are installed outside buildings, for example connecting two neighboring building networks, a very good solution is to use universal ULTIMODE UNI cables suitable for both indoor and outdoor applications. They also have LSZH jackets plus adequate protection against ingress of moisture - the fibers are placed in a central gel-filled tube. The use of universal cables enables cost reduction.
Universal cable ULTIMODE UNI-4MM L7354
Example components of a home CCTV system
In this example, the SIGNAL DL-8308 M78308 DVR has been configured to send email notification to a defined address after motion detection in video from the indoor cameras. The email containing the screenshot of the situation is signaled to the owner via SMS by SMTP mail server.
Having iPhone, BlackBerry or Android smartphone, the owner can view live video from the cameras (after installing suitable application) and verify each case. When necessary, he/she calls the police or other emergency services.
Remote video monitoring can provide a more peaceful holiday, with a quick look at the property at any time.
Having iPhone, BlackBerry or Android smartphone, the owner can view live video from the cameras (after installing suitable application) and verify each case. When necessary, he/she calls the police or other emergency services.
Remote video monitoring can provide a more peaceful holiday, with a quick look at the property at any time.
IP CCTV cameras with Flash technology.
Customers and installers are increasingly interested in viewing images from security cameras with the use of popular browsers other than IE. Sunell is the first company that provides software for its K1620, K1630, K1650, K1660, K1670, K1680, K1690, K1691, K1695 cameras to display the video in Flash Player.
Web access to a video stream from the camera performed via IE requires installation of ActiveX controls. Alternative browsers (Firefox, Opera, Chrome) do not need any plug-ins or patches - thanks to Flash technology the image is directly displayed by the respective browser.
- depth (depending on the model): 450, 600 mm
- self-assembling time ca 10 minutes
- holes for cables: in rear panel, on top, in the bottom
- ventilation openings: in side panels, in doors
- removable side panels
- convertible left/right swing door
- packed in one cardboard box
- lock on the doorknob
- two keys
- four rack rails for mounting devices (2x front, 2x rear)
- Marked distances (1U) on mounting rails
- grounding connector
- possibility to mount two R912026 fans
- wall mounting with bracket for hanging cabinets R912027 (not included) or hangers (not included)
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New products offered by DIPOL
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Worth reading:
How to power TERRA multiswitches in SMATV systems? Power optimization in shared antenna systems is one of the key issues. In the case of TERRA solutions, centralized power supply can significantly reduce costs thanks to...
Digital signage easier than ever! Digital signage is a system which uses electronic displays and managing software to show dedicated information, advertisements, news and other messages. The aim of Digital signage is to target individuals and groups of people in specific places at specific times. Such systems are used in airports, hotels, restaurants, retail outlets, service networks, etc.
The digital signage content can be delivered from multimedia players, Blu-Ray players, satellite receivers, computers etc., and distributed in the network in the form of digital TV signal (DVB-T).
The core of the system is Signal-751 R86751, a multifunctional device that encodes input HDMI signal to IP stream and modulates RF signal in accordance with DVB-T standard. This RF signal can be easily distributed via coaxial cables even to hundreds of televisions...
The digital signage content can be delivered from multimedia players, Blu-Ray players, satellite receivers, computers etc., and distributed in the network in the form of digital TV signal (DVB-T).
The core of the system is Signal-751 R86751, a multifunctional device that encodes input HDMI signal to IP stream and modulates RF signal in accordance with DVB-T standard. This RF signal can be easily distributed via coaxial cables even to hundreds of televisions...
How to install fiber optic cabling in a building? Fiber optic distribution frames/boxes allow for easy organization of fiber optic cables, ensuring connection and re-connection of optical paths, as well as operational and control measurements.
The items also protect splices and splitters and ensure appropriate bending radius of the optical fibers, which protects them against micro-cracks. Additionally, they should allow for quick and easy access, maintenance and reconfiguration.
The ULTIMODE distribution box TB-08B L5408 provides a splice tray..
The items also protect splices and splitters and ensure appropriate bending radius of the optical fibers, which protects them against micro-cracks. Additionally, they should allow for quick and easy access, maintenance and reconfiguration.
The ULTIMODE distribution box TB-08B L5408 provides a splice tray..
View of the ULTIMODE TB-08B L5408 distribution box
(used in a system - the installed components are not included)
(used in a system - the installed components are not included)
