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ACTS Newsclips - The Interactive Gateway to Advanced Communications Technologies and Services. A biweekly newsfeed produced by the InfoWin project
A biweekly newsfeed produced by the InfoWin project - ACTS Multimedia Information Window - about developments in Advanced Communications Technologies and Services. The ACTSprogramme's 150+ projects represent the European Commission's effort to support precompetitive Research and Technological Development in the telecommunications field in order to prepare the ground for an internationally competitive information infrastructure.

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ImageA Happy Holiday Season and
All the Best for 1997 to Our Readers.
ACTSNewsClips will be back on January 15.

ISSUE No. 15
1996 - December - 15


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© downloaded 1996


to startTelematics has Opened its Web Site

In our September 15 downloaded, we've announced that the Telematics programme would open soon its web site which can now be found at http://www2.echo.lu/telematics/. It features basic information on the programme, its 12 components, and the corresponding projects. The downloaded project heartily welcomes its sister site and wishes Telematics a lot of hits!

By downloaded, CP2i, 14.12.1996


to startI*MEurope Now in More Flavours

I*M-EUROPE - a "medium for supporting the actions of I*M-EUROPE of the European Commission in stimulating the European electronic information services market and multimedia content industries", has recently introduced a new service called I*M-EUROPE. It intends to highlight new documents offered on the echo.lu server in a "meaningful and user-friendly way" by allowing immediate access to a selection of information market related news items, including occasional links to documents on other servers which are "of relevance to the information market in the wider context of developments leading to the Information Society".

The newsletter's home page contains three or four short news items, linking to the relevant new documents. I*M News comes in different flavours, one featuring Shockwave, the other one plain vanilla HTML files, and the language of your choice - as long as your choice is either English, French or German. Selecting a particular area, e.g., I*M-EUROPE, http://www2.echo.lu/telematics/, I*M-EUROPE (MLIS) will take you to a list of headlines for the most recent news items in the chosen field. Clicking on a headline leads to a short-form news item (or abstract) on this subject - still in the preferred language. You then have the option of reading the full document on I*M-Europe or another server. The number of headlines for each area is still quite small, but the lists will eventually expand as the service proceeds. Headlines and related abstracts will fall off the edge in a month or so.

By downloaded, IENM/Techno-Z FH F&E, 14.12.1996


to startWill Video Surpass Film Projection?

Video projection offers a new display technology with advantages over traditional film projection such as

It would eventually be acceptable for showing cinema films as well as for high quality, large screen services (e.g. transmission of live events). Although in some respects not quite able to match film projectors yet, continuing development is likely to lead to this technology surpassing the capabilities of film projection before long.

These are the main results of a test organised by the CINENET project at Pinewood Studios (UK) this fall.

downloaded (Cinema Films and Live Events via Satellite and Cable Networks) is developing a complete platform for delivery of digital high definition (HD) services including cinema films and live events via satellite and CATV networks. Since the ability to show large high quality images in cinemas is of major importance for these services, a high quality HD video projector is one of the project's developments. The availability of an advanced Barco 9100 prototype video projector LCD (Liquid Crystal Display) was greeted as an opportunity to assess the latest technology, and to allow operational image quality and future potential to be predicted. The acceptability of video projection in terms of image quality, for example as an alternative to or replacement for existing cinema technology, is important for introduction into the market.

Identical, side-by-side testing of video and film projectors allowed performance of both technologies to be assessed at the test site. The tests involved the viewing of sequences of cinema film and "TV-like" material, judged subjectively by an audience in a true cinema environment. In addition measurements were made of a range of technical parameters for static images including an innovative method for evaluating resolution.

Close co-operation with the TAPESTRIES (The Application of Psychological Evaluation to Systems and Technologies in Remote Imaging and Entertainment Services) project was initiated in support of subjective testing. The EUREKA project ADTT also joined the task force as expert observers.

The technical measurements on the video projection revealed excellent image quality - especially in the important parameters of resolution and brightness: the 1024 pixel/line resolution of the video projection, although less than the 1440 planned for transmission, was shown to be almost 3 times better than commercial film. The results showed that projection technology is still source-dependent: material shot by video camera showed the best reproduction with video projection, whilst film-originated material was still more suited to film projection.

Video projection would be expected to show its superiority in reproducing the original production material even after many digital copies without significant degradation. Although film projectors are capable of high quality, their image quality (e.g. resolution) is limited by the need for copying prints (with unavoidable impairments) to 4th generation or later for commercial distribution.

By downloaded, IENM/Techno-Z FH F&E, 14.12.1996


to startSatellites Bring Multimedia Interactivity to Remote Places

Services such as Internet Browsing, Telemedicine, Interactive Video, Movie on Demand or Telelearning are becoming more and more a reality for those of us who live downtown where the communication infrastructure is considered an ordinary and natural thing. But what happens to those located in rural areas? How does interactivity look like on a mountain top? Are we going to be cut off from the wonderland of Hi-Tech there?

"Not much longer", says downloaded, who is responsible for the downloaded Project. Satellites give us the possibility to access a range of multimedia services independently from one's location and to overcome the limits of existing terrestrial infrastructure. With satellites such as the EUTELSAT / Hot Bird series, to give just one example, it is just about time to have multimedia service provision over wide-area via satellite. According to Mr. Des Dorides, "the in-the-sky technology is already in place. What we must learn here on the ground is how to get the most of it to provide the interactive functionality. This is what makes the difference and adds value to the traditional TV distribution. Many companies believe in services like Interactive TV, Navigation with Internet Browsers, Tele-education and Telemedicine (see the recent Hot Bird II launch and relevant transponders hiring). What we are doing is to demonstrate the technical/economical feasibility of a multimedia interactive system via satellite".

The ISIS Project addresses the direct to home (DTH) scenario. It is designing and developing a prototype communication system capable of serving typical TV end-users. ISIS proposes to simultaneously utilise the Ku-band and the Ka-band bandwidth segments respectively for the forward service and for the return interactive link, mainly supporting an asymmetric traffic. This innovative idea will permit to tailor the satellite system characteristics to the actual user needs. In particular, the utilisation of Ku-band and of the Digital Video Broadcasting (DVB) platform will mainly allow:

The Ka-band segment can also permit to stimulate the penetration of Multimedia and Interactive TV service thanks to large bandwidth availability and to improve the cost effectiveness thanks to the increase of system capacity throughput.

ISIS is not directed exclusively towards the evolution of commercial satellite television. In fact the development of multimedia technology will undoubtedly spur new applications and services requiring a wide-band capability in both directions (forward and return). ISIS intends to start from the asymmetric services to arrive at a configuration supporting this new traffic condition thanks to the utilisation of the maximum extent of the benefits of Ka-band. Examples of symmetric multimedia services are video-conferencing or generic PC to PC communications.

With satellite interactivity end-users will get access to the best products available in the information and telematic market. In this framework, ISIS is playing a significant role by proposing one of the first prototype of Multimedia Interactive Satellite systems. The intention is to stimulate local and international operators to offer Interactive TV Services at affordable prices. So far, still relatively high prices of equipment have limited the market to professional usage. However, economies of scale, the extension of the market to residential users and increased competition in the information market promise to bring a gradual but constant price reduction.

By downloaded, CSELT, 05.12.1996


to start Optical Fibre ATM Components - Using Integrated Optics

ATM has arrived. Network operators across the world are commissioning public ATM networks in advance of the growing demand. Looking through the telescope the other way round - big developments are taking place at the component level.

According to project co-ordinator downloaded, the ACTS R&D project BLISS is prototyping integrated optics components that will give 'optical fibre ATM on a chip'.

The various optical components that make up the transceiver are created directly on an Indium Phosphide substrate. There is nothing new in creating optical components in this way. What is new is they are all contained on a single substrate.

Duplexer

A single fibre might carry information using light of different wavelengths in either direction. At the termination points, the two wavelengths have to be separated and this can be done using a duplexer. The unit being developed by BLISS operates at 1550 nm and 1300 nm, and uses the MMI topological interference. A pathlength difference is contrived so that the two wavelengths separate out. The performance of the system is more than adequate; it provides 25 dB separation between input and output.

Creating the duplexer is only part of the problem. It is a non-trivial problem to connect the fibre onto the substrate. In this system, the wavelength aperture is only 2 micron - whereas a single-mode fibre spot size is 6 microns.

Coupling the fibre to the laser

A commonly used method of aligning the optical fibre with the laser source is to make a V-shaped groove next to the laser, and locate the end of the fibre in it. The effectiveness of this connection (the coupling efficiency) is around 10%, and depends on the accuracy with which the alignment can be carried out. It can be improved by forming a micro-lens on the end of the fibre, but coupling efficiencies of 50% are achieved against the need to have even more precise alignment.

The BLISS project is investigating an alternative approach. Alignment would be less critical if the spot size from the laser were made larger. The size of the spot is dictated by the structure of the active region of the laser, and there is little scope for manoeuvre here. The approach is to terminate the active region gradually, rather than as a step change, and implant a fairly weak waveguide beneath the active region. This produces a broader spot, and should enable coupling efficiencies of 40% to be obtained.

The bottom line is that any improvement in coupling efficiency and/or relaxing of the alignment accuracy will lead to higher production yields and lower costs.

Tuneable lasers

Wavelength Division Multiplexing is commonly used to transmit several signals down a single fibre (see ACTS NewsClips downloaded). BLISS is developing a tuneable laser whose wavelength can be shifted over a 40 nm range. Interrupted gratings are installed on either side of the laser's active region, and tuning is carried using the opto-electric effect whereby the refractive index varies in sympathy with the carrier densities.

The laser can be tuned to any wavelength within the 40 nm range by applying the appropriate currents to the two interrupted gratings. Despite high tolerance manufacture, there are small variations in the level of current needed for operation at a particular wavelength.

The manufacturing process includes, therefore, a characterisation phase. The current levels needed to cause emission at various wavelengths within the tuning range are recorded. Once this individual characterisation has been carried out, a particular wavelength can be obtained simply by recalling the necessary current levels. This operation is carried out by the controller circuit that is part of the tuneable laser system.

The wavelength switching function depends upon the movement of carriers within the semiconducting material. This means that the response time is measured in nS - perhaps 'wavelength agile' would be a more appropriate term than 'tuneable'.

Synergy

The BLISS project has links with other ACTS projects. There is a chain of activities, one project feeding state-of-the-art developments to other projects. BLISS is supplying tuneable lasers to the WOTAN project, and wavelength-steerable lasers to the BROADBAND project.

The Big View

This article has described specific components that are being developed in the BLISS project. The project also considers higher-level component issues, such as describing the functionality of components that will be needed in the near future, how to manufacture them on a large scale, how to improve performance, and so on. The bottom line is that BLISS is delivering low-cost optical components for access networks, and advanced components for backbone networks.

By downloaded, Open University, 12.12.1996


to startMETON Multiplexers Ready for Testing

Partners in the ACTS project METON (Metropolitan Optical Network) - Ericsson in Sweden and Italy, as well as Pirelli in France - will develop a total number of five optical add/drop multiplexers based on different technologies. Two multiplexers, one Fabry-Perot based and one acousto-optic based, are now ready for testing and evaluation at the CNET testbed in Lannion, France. Results from these tests are expected beginning of next year.

After the testing period the equipment will be shipped to Sweden for integration into the Stockholm Gigabit Network, where the METON project will carry out extensive field trials next year.

METON's main objective is to demonstrate Wave length Division Multiplexing (WDM) in a Metropolitan network. The testbed network is divided into a service/application layer, an ATM layer, and an optical transport layer. The physical topology of the network is based on two transparent optical ring architectures, one bi-directional and one unidirectional. These two ring sub-networks are interconnected using an optical cross-connect, developed by the RACE project MWTN.

The project is focusing on three services:

Different protocols will be evaluated for the implementation of these services.

"Part of the project objective is to assess the cost efficiency of using WDM technology in metropolitan networks", says METON project manager downloaded of Ericsson Sweden. Transport network modelling will also be addressed assessing several network parameters such as:

Another key issue for the project is control and network management. This work will heavily be based on the unique experiences gained from the MWTN project. "The goal for next year will be to define an Information Model that can be provided to the ACTS guidelines", says Sonny Johansson. The METON project expects to make important contributions to the development of new standards in the area of optical networking and related technologies.

By downloaded, Telenor, 12.12.1996


to startATM-based teleteaching between Zurich and Lausanne

Télépoly is the name of the teleteaching experiment between the downloaded in Zurich and the EPFL in Lausanne. Its main purpose was initially to provide a technical platform for the exchange of lectures between the ETHZ and the EPFL, but Télépoly has been and can be used for the transmission of workshops, presentations and conferences.

Electronic teaching aids are distributed between the local and the remote site using an application sharing tool. This software runs on standard workstations on top of a TCP/IP protocol stack. For interconnecting workstations two solutions are feasible: connected to the Internet or connected to the ATM network directly, using AAL5.
In the current Télépoly setting both solutions have been applied and tested.

Three experimental phases between Zurich and Lausanne are projected:

A Postscript gzipped article on Télépoly can be downloaded from the ETHZ.

By downloaded, Swiss Telecom PTT, 12.12.1996


to startDevelopment of ATM in Corporate Networks: the ATM-CN Project

Driven by demands for increasing and flexible bandwidth as well as multimedia traffic, downloaded is rapidly entering the field of Corporate Networks (CN). Installed CNs exhibit historically grown heterogeneous LAN and WAN topologies and protocols posing interworking problems when trying to follow economic migration paths towards ATM technology.

The ATM-CN project, a collaborative effort of downloaded and downloaded, focuses on this migration path and the related technologies such as downloaded, downloaded, or Multiple Protocol over ATM. It will assess the maturity and relevance of existing ATM network techniques and products in relation to complete CN solutions.

According to Newsflash, the internal magazine of Swiss Telecom PTT R&D, the Swiss part is carried out by downloaded 315 (Research & Development 315) with 1.5 MY. An equal amount is contributed by KPN Research. The project is planned to be completed the first quarter of 1997.

For further information on the ATM-CN project, please contact A. Wettstein, FE315, ph.+ 41.31.338.1175.

By downloaded, Swiss Telecom PTT, 11.12.1996


to startECDL, the European Computer Driving License

As computers are more and more becoming commonplace, companies expect employees and job applicants to be familiar with this tool. But how to measure the degree of acquisition of computer skills? This is the problem that downloaded, an association of European Informatics Professionals has addressed by launching the ECDL, downloaded.

In a downloaded during the Esprit downloaded event in Brussels, downloaded, who represents ECDL for France, explained the basic principles of the licence. ECDL is meant to certify the familiarity of a person in manipulating computers. It somehow looks like the TOEFL test which measures the proficiency of non-native speakers in English.

ECDL consists of different modules, ranging from basic PC manipulation up to Internet skills (email, web), going through databases, spreadsheets, word processors. A person needs to pass through all 7 modules to obtain the licence, which is a physical document.

ECDL is a European norm: derived from a Finnish experiment, adapted by CEPIS, it is now spreading into other European countries. It is actively supported by Commissioner Martin Bangemann, who included this into the downloaded (number 23) in downloaded. DGIII is financing part of its realisation, and DGXXII has expressed its interest, as well as Commissioner Edith Cresson.

Of equal importance is the interest that the industry shows towards ECDL. Over 15,000 licences have been issued in Finland by 300 accredited centres. In Sweden, 6,500 persons passed it since it was launched in August 1996. ABB, the Swedish Post, Norsk Hydro are planning to use it, so is Rank Xerox in Denmark. Three Ministers in Denmark, including the Ministry of Industry, are strongly pushing this idea. Many Irish companies are already on the edge of acquiring the licenses.

By downloaded, CP2i, 14.12.1996


to startThird International COST 237 Workshop in Barcelona

cost.logo The Third International COST 237 Workshop on Multimedia Telecommunications and Applications took place in Barcelona at the downloaded, from November 25 to 27.

A total of 34 papers were submitted from Europe and USA. After a very selective refereeing process, less than 50% papers of high quality were accepted for a total of 15 presentations, to achieve the goal of a compact and very interesting workshop program.

Click downloaded for some pictures on the workshop.

On the first day invited speakers gave the following talks:

On the following two days, five technical sessions were scheduled. The topics for these sessions were:

For more details about the sessions, please click downloaded.

Over 60 people from more than 14 countries registered for the workshop. The proceedings of the workshop have been published by downloaded in the "Lecture Notes in Computer Science" series (LNCS 1185). For further information about the event check out the downloaded.

By downloaded, UPC-DAC, 10.12.1996


to startMultidisciplinary DLM-Forum on Electronic Records
At the European Commission in Brussels, December 18-20

The European Commission organises "a multidisciplinary Forum in the framework of the Community on the problems of the management, storage, conservation and retrieval of machine-readable data". The event will bring together specialists and executives involved in the management of information flow and electronic records (public administrations, archivists, industry suppliers, researchers).

The downloaded will be jointly hosted by the European Union Member States and the European Commission (Secretariat-General and DG XII - Science, reasearch and development). The debate will focus on possibilities for wider cooperation, within the framework of the European Union, with regard to the management, storage, conservation and retrieval of electronic records.

The objective is to prepare a set of guidelines for best practice in the field of electronic records and to investigate possibilities for cooperation both between Member states and at Community level. The Forum will consist of plenary sessions and parallel working party meetings. The main topics to be covered will include:

As the registration deadline has already passed, interested parties would have to register on the spot.
A resume of the event will be published in an upcoming issue of ACTSNewsClips.

By downloaded, IENM/Techno-Z FH F&E, 14.12.1996


to startMigration to ATM

People think that if you replace your existing network for one with a higher data rate, your congestion problems will vanish. If recent experience is anything to go by, the improvement might not be long lived. Users quickly come to like their new network - so much, in fact, that they use it more and more. Before long, the congestion problems start to re-appear. This sad little story need not be repeated!

A two-day downloaded conference takes place in London on February 26-27, 1997, entitled "Achieving Successful migration to ATM". This is an opportunity to hear what is really happening in ATM, by the people who are making it happen. There are speakers from equipment providers (3Com, Cisco, K-Net), from network operators (British Telecom, Telecom Italia, Belgacom), and the industry is represented through the ATM Forum.

By downloaded, Open University, 14.12.1996


to startCourse on Computer Vision via Satellite and Internet

A tele-course on Computer Vision, covering the major applications of computer vision, the rationale for its use as well as its basic working principles and current trends, is about to take place in January of next year. The course, a joint initiative of the downloaded, downloaded and the downloaded (ECVNet), consists of live satellite broadcasts throughout Europe, and is combined with Internet support.

Each course module comprises an introductory lecture and a discussion on the state of the art by a panel of experts. The audience can ask on-line questions by phone, fax or e-mail. Due attention will be given to related issues such as the choice of cameras, optics and illumination. As to the actual image processing, emphasis is on image enhancement, feature and texture extraction, range acquisition (3-D), shape modelling, motion extraction and tracking, object detection and recognition.

The set of programmes consists of 6 thematic sessions of 2 hours each. The first unit is a lecture-type explanation of working principles. The second unit is a panel discussion with leading experts. Both units are broadcast live, with interaction from the participating centres. These weekly sessions are scheduled from January 24 until February 28, 1997 from 3 till 5 pm C.E.T.