Posts Tagged “connectivity”

As apparently the web has more and more hicups leaving thousands of us without connectivity during hours, you can now check if the website you cannot access is down for everyone or only for you.

Check your unaccessible site from “Down for Everyone of Just me ?

Source: Transnets

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tgvest.jpgTGV tests Wi-Fi + satellite link in three TGV trains on its Eastern network. If the experiment proves successful the new service should be generalized, from 2009, to all 52 oars network East.

With combines effort of satellite link and wireless network, in locations, such tunnels and train stations, where the satellite link cannot be established, the wi-fi network takes over to maintain the access to the Web without interruption.

French railways company SNCF previously conducted unsuccessful test using GPRS data network before launching a 2 years research and preparation program to implement this dual solution. Among technical difficulties to overcome are these related to 320 km/h TGV trains speed which causes instability and vibrations. 

The project is done in a partnership with Orange(France Telecom mobile operator), Capgemini, Alstom Transport and Eutelsat.

SNCF will put on board of its TGV a dedicated Web portal providing information about destinations, weather forecast, News, traffic information as well as a real time tracking service. From a technical point of view, TGV trains are fitted with a server where all portal content is loaded prior the journey in order to minimize bandwidth consumption due to its high cost. The tested system has been designed to provide simultaneous web connection for 14 per cent (50 users) of the total capacity of each TGV train (350).

The business plan is not defined yet, but the widespread of the system on TGV Eastern Europe network would represent an investment of 120 millions USD over 4 years. First price estimation given by SNCF Passenger service would be a flat 4-5 USD to access the Web portal during the whole journey and a 4-5 USD per hour to access the Internet.

A very interesting project and definitively a real challenge to maintain permanent web connectivity during a train journey at more than 300 km/h where the 16'000 volt power line running over the train may also create some electro-magnetic interferences and without mentioning all micro interruptions of the satellite link each time the train pass under a bridge or when dense foliage is found within the satellite's line of sight.

Any reader who already had the chance to test the reliability of the service ?

More infos (in French): Journal du Net, CNet France.

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samsungg800.jpgSince, mid-2006 mobile phones with a built-in 3 MP camera and optical zoon are available on the market and already represent an alternative to low end digital camera. More than 70 models are available today with a 3 to 5 MP resolution. One of the first phone with a "real camera" was the famous one Nokia N93 and its Carl Zeiss Optics.

Samsung is now putting even more pressure on camera makers with the soon release (first on European market) of its G800. A 5 MP digital camera with 3x optical zoom into mobile phone… or is it the opposite? 

The specifications are rather attractive:

  • Quad bands (900 / 1800 / 1900 / 2100  )
  • Data network HSDPA 7.2 Mbps
  • 2.4 inches TFT display with 256K colors
  • Size 101×52x19mm for 129 gr (25% lighter than the Nokia N93)
  • Standby 220 hours, talk time 3.5 hours.
  • Memory 160 MB + MicroSD slot
  • Document views (Office, PPT, PDF,)
  • Email (POP3, IMAP), SMS, MMS,
  • Connectivity: Bluetooth, USB 2.0, PCSync, OutlookSync, etc..
  • FM Receiver, Java embedded, MP3, etc..

and indeed the built-in camera:

  • 5 Mio Pixel
  • 2592х1944 pixels
  • autofocus
  • video recording mode: MPEG4, 3GPP, H.263, H.264
  • xenon flash
  • 3x optical zoom /4x digital
  • 4 shot modes
  • 4 quality settings
  • brightness adjustment

 All other specs are here

The big plus is definitively the 3x optical zoom which makes the difference with other 5 MP phones.  The resolution race continues as Samsung (them again) Electro-Mechanics announced on November 15th that 8 MP camera phones may be available by next summer following the successful development of a 10.5 x 11.5 x 9.4mm 8 megapixel CMOS censor.

Will camera makers develop new "point and shoot" camera with built-in phones  and multimedia facilities such MP3 player and FM receiver ?

I'm impatient to have one "box" less to carry when traveling…

What will you drop first ? your camera or your phone ? ;-)

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