Posts Tagged “power”

satassd.jpgToshiba will soon start production of 2 new interesting products which may find their way into future mobile/portable devices.

First are the new SATA SSD (Solid State Drive) drives on 1.8' and 2.5' formats. According Engadget 32, 64 and 128 GB will be available. Speed announced is read 100 MB/s while reading and 40 MB/sec writting.

With such capacity, traditional mechanical hard disk will slowly disappear from portable devices. With no moving parts, a solid state drive largely eliminates seek time, latency and other electro-mechanical delays and failures associated with a conventional hard disk drive.

scib.jpgThe second interesting product announced by Toshiba is the so called "Super Charge ion Battery" (SCiB) which is at this stage not intended for portable devices but for industrial systems and electric vehicles.

SCiB Major Characteristics

  • Safety : SCiB adopts a new negative-electrode material that offers a high level of thermal stability and a high flash point electrolyte. Its structure is resistant to internal short circuiting and thermal runaway

  • Long-life cycle : Capacity loss after 3,000 cycles of rapid charge and discharge is less than 10%. SCiB batteries are able to repeat the charge-discharge cycle over 5,000 times which is equivalent to more than 10 years with a once-a-day recharge-discharge cycle.
  • Rapidly rechargeable : Safety characteristics of SCiB allow recharge with a current as large as 50 amperes (A), allowing the SCiB Cell and SCiB Standard Module to recharge to 90% of full capacity in only five minutes.
  • High power (practical capacity) : The SCiB has an input-output performance equivalent to that of an electric double layer capacitor.
  • Temperature : Extreme temperatures supported with sufficient discharge at temperatures as low as -30°C.

SCiB batteries will first be available on the market in March 2008 with the following specifications:

  • Nominal voltage  : 24VDC
  • Nominal capacity : 4.2 Ah
  • Size : 10×30x5 cm
  • Weight : 2 kg

Perhaps these batteries will also find other field of application,  but for portable devices they will need to become lighter and slimmer..but batteries that get charges in  five minutes are definitively very attractive for mobile users. 

What do you think ?  

Sources: Engadget Toshiba 

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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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chinesebond.jpgBritish secret services MI5 warned UK businesses about Chinese hackers.

MI5 director-general wrote to 300 UK firms including Banks and law firms to warn them about "electronic espionage attacks" conducted by "Chinese state organizations".

IT Security company Sophos reports that 30 per cent of malware are "made in China". Trojan horses are designed to rob login credentials of anything including email and games. 

China's People's Liberation Army (PLA) was already blamed in September 2007 for attacking governments computers of France, Germany, New Zealand, Australia and United States, including Pentagon systems.

Trojan horses often target computers with unpatched vulnerabilities and without proper level of security deployed.  

The Chinese government has denied any involvement in the attacks and pointed its finger to unidentified hackers.

The question is now to discover if malware "made in China" are really powerful and smart of if attacked computers were the result of a serious lack of security and preventive protection measures.

Source: The Register 

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