Nokia C5: Cheap S60 mobile angetestet

This blog post via: Nokia C5: Cheap S60 mobile angetestet

Nokia C5: Cheap S60 mobile angetestet

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With the C5, the first Nokia phone sends its new C-Class into the race. At the Hanover Fair CeBIT (was) 2 to March 6, the device presented, with the successful Nokia's S60 user interface works, and will begin shipping during the second quarter for just 169 Euro without a contract. A Value-hit, on the worth the wait? The editors of the CHIP mobile world provides the answer, because she has tried a pilot series of C5-spot already.

1. Facts

C stands for Classic and it appears the C5 in the classical format with bar display and built-up including control and numeric keys on the front page. The specified level of 112 x 46 x 12 mm corresponds to a S60 phone with an open operating system compact size. In addition, it weighs only 89 grams As a special Nokia has released the C5 for its world-free navigation ‘Free Ovi Maps' (Ovi Maps 3.0.3). Both the application and an A-GPS receiver is integrated. This novelty is trimmed to social network services: client for Facebook, My Space, the Google Talk Instant Messenger and Windows Live and e-mail services Ovi Mail, Google Mail and Messaging Nokia stand for an extensive exchange with friends over the web. Internet Connections builds the C5 in the HSDPA speed on over the mobile network and also sets the mail sent via HSUPA for speed. A 3.2-megapixel camera, a media player, a radio feature and a jack for standard headphones and an expandable memory round out the multimedia division from.

2. Practice

The C5 looks neat and fits comfortably in your hand. The pre-series was already well-made. Although the battery cover is made of plastic, makes the phone not a cheap impression. To value the appearance, accentuated by the chrome parts on the front as the frame. The control and numeric keys respond when typing and navigating through the menu already fixed and precise. The number keys are well separated from each other. Only the distance between the soft and hard keys failed Nokia optimal: When trying out there were some mistakes. As for the screen: At 2.2 inches, it comes out on video and web site rather small, but is usual in this classic mobile phone format. The resolution of 320 x 240 pixels is more time for today's minimum requirement. Still worked on our test device that quickly clips or streamlined menu yet practicable.

The menu we could not test that C5 is during the fair days chained to the display table. But the mere fact that the device is the world's free signposts by car and foot support is a big plus. It also appeared in the Navi practice test of the CHIP mobile world very purposeful. The internet access worked on the C5 in the first check also quite fast, the mobile website of CHIP Online built the system in about 20 seconds. The 3.2-megapixel camera took a good first impression, as does the music player. The real quality is, however, only show the full test.

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Lack of Wi-Fi, 3.2-megapixel photo resolution to be limited, not a very high-quality housing material: Here you find that Nokia has set the red pencil. Here, the C5 is not a cheap knock-offs. It offers an attractive Rundumschlag, is also relying on free navigation, and thanks to Symbian OS open for tens of additional programs. A commendable package that makes sure that a nerve with many users. The MSRP of 170 Euro will be undercut by free traders still safe. All images plus first live images, see the photo gallery. Who does not want to wait and rather looking for a cheap S60 with touch screen, which comes to 5230 from 125 euros without contract in question. It also supports the free navigation. (wh)

China's economy is still expected to maintain a rapid growth

Last Friday, the PBOC issued the 2007 fourth quarter monetary policy implementation report indicates that economic performance in 2008 as international and domestic uncertainty increased gradually emerging effects of macro-control policies, economic stabilization and moderate growth is likely to slow down high , but economic growth shifted from growing too fast yet fundamentally alleviate the situation of overheating, inflation, increased risk; rapid investment growth momentum is expected to ease, but will continue to maintain rapid growth.

In this regard, first futures analyst Liu Guanyu that, in the U.S. economy by the sub-debt crisis situation and gradually increase, with China emerging countries, led by the extent to which able to maintain rapid economic growth, thereby offsetting the economic slowdown in developed countries with to the impact of paramount importance. As the world's major powers of steel and the largest developing country, China's sustained economic growth, will include metal commodity prices, including vital support.

Short-term supply and demand change and global impact of inflation expectations

China snowstorms on the impact of non-ferrous metal production in the most recent market attention. Wing Futures certain analysts believe, given the power restoration and reconstruction work after snowstorms in full swing, the demand for power grid reconstruction is full of stimulating demand for copper look forward to. He said that the market for short-term concerns about the shortage of domestic supply capacity as non-ferrous metal prices, strong domestic support.

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In addition, the short-term changes is also reflected in the changes in the supply. First, LME copper stocks continued to decline. From the beginning in January LME copper stocks continued to decline, as of February 20, the Stock Exchange stocks fell to 137.6 thousand tons, one and a half months to reduce inventory by 6.3 million tonnes, decreased by 31.5%, and the cancellation of warrants of up to more than 30,000 tons , which indicates that stock exchanges may continue to decline, the market interpreted this demand. Followed by the supply of copper concentrate shortages. Power shortage this year, not only for the impact of domestic industrial production, Chile, Zambia, South Africa and other major producing countries of metal mineral resources have also emerged in power shortages. Early February, Chile, said the tight supply of energy may lead to the country's GDP growth this year dropped by 0.5% -1% to 4.5% -5.5%. Encountered more than 50 years due to a rare drought, Chile, the domestic reservoir water level dropped, while the supply of natural gas used for electricity generation is also a shortage.

Global inflation is expected to support the metal prices have also become an important reason for higher short-term. Maike Futures analyst FJLIANG that the increasingly high cost of production makes the price of copper in the bottom of the constant uplift, while the continuing decline in purchasing power of money making more and more money to buy commodities to avoid risks, which also increased the price of copper up possibilities.

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Makings of a legend?

This blog post via: Makings of a legend?

Makings of a legend?

The HTC Legend has won the place of the current best Android phones in the ranking. Despite the somewhat weaker equipment, the Legend can defeat even the much-praised Nexus One - why, you betrayed our test.

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The Legend is the official descendant of the successful HTC Hero. With the latest version of Android 2.1, an improved display and much more noble outfit takes the legend in the footsteps of the hero and joins in the ranking significantly further a front. Incidentally, it creates a legend even in Google’s top dog Nexus One (U.S. version) by improved mainly because of the ergonomics.

Fast in all respects

Although the legend has to be content with a 600 MHz processor, but in practice it is hardly a performance difference between the Nexus One (1 GHz) and the Legend noticeable. Even when multiple programs are running simultaneously, the work rate remains at a high level. Also, the display responded quickly in the test. This fix changes from portrait to landscape mode and increases or the image in the multi-touch operation, so the zoom using the separated or reduced contraction of two fingers on the display, fast. Also the kinetic scrolling works well in Legend.

Mobile surfing, you can use HSPA up to 7.2 Mbps for downloads and up to 2 Mbps for uploads. In practice, the browser presents a good pace. In about 12 seconds a default page (Chip.de) was fully loaded. Thanks to USB 2.0, the Legend also puts down during data transfer via USB cable a good time. In less than a second title transferred an MP3 from the computer to the phone.

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Input: optical trackball mouse instead.

Although absent from the Legend of the sophisticated voice recognition of the nexus, and it offers no factory nicely animated wallpaper. However, the phone has something on the box: Android 2.1 is even more on social networks and has some nice visual features. In addition to the Legend, the donated HTC’s own user interface Sense. Here you can use, for example, the function “Friend Stream”. This allows contacts, phone numbers and Social Networks and join the user will be informed about news always on request from the respective networks.

Legendary sharply

OLED is the magic word and the Legend. The 3.2-inch display gives the information you knackscharf and above all with impressive brightness and contrast. In addition, designed as a capacitive touch screen display responds quickly and precisely to the input via a finger. Even the very small type of the virtual QWERTY keyboard with a little practice can use quickly and accurately. When Legend HTC replaces the mechanical trackball with an optical mouse, which responds to the Darüberfahren with a finger. This works in practice, although not quite as precise.

A built-in light sensor agrees with the corresponding display brightness from the current conditions. This saves energy. Speaking of energy or battery life: Again, the Legend can be seen. At full power GSM stood at the end just 3 hours and 40 minutes on the clock.

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Camera: VGA video and images with 5-megapixel.

In the case of the HTC Legend is starting to work a microSD card with 2 GByte. The internal memory of the mobile phone holds about 200 megabytes. To remain around 2.2 GB for your music, photos or videos. If that is not enough that can upgrade up to 32 GB via memory card. The music player uses its full potential on the attached earphones is not full. The factory headset brings the sounds only half-cooked on the ears. Thanks to 3.5 mm jack, you can also anstopseln own, higher-quality eavesdropper. Then it just sounds a lot better. The sound image can be due to missing or an equalizer presets do not change, but the Android Market offers here many free applications.

Images shot using the Legend 5-megapixel camera. In the current version of Android amateur photographers to get a few more functions to the source - such as the adjustment of contrast, color saturation and sharpness directly via e-scale setting. Also features like geotagging and Flimmeranpassung can be utilized. On the whole, the photos can be seen of the Legend in daylight conditions, when strikes a somewhat irregular edge distribution (see photo gallery). Videos are recorded in VGA format (640 x 480). Our acoustic test mastered the Legend with quite good performances. The voices always sounded natural and pleasant loud. Only the Handsfree placed at the intercom blared out occasionally and tidy at full volume.

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Portable Device Information A

Portable Device Information A

Mobile phones, multimedia players (PMP), MP3 players, digital cameras, portable video game consoles, personal navigation systems (PNA), etc., these popular consumer favorite portable consumer electronics products, a basic problem is: their functions become increasingly diverse and increasingly sophisticated dimension, but the increase in energy density batteries can not keep up much faster and ever-increasing complexity of the power requirements of portable devices, and people still want to be able to charge the case of a longer time interval, take advantage of these short, light, portable consumer electronics to enjoy mobile entertainment and mobile communications. In particular, the integration of these products feature the trend, for example, with a camera and camera-enabled mobile phones, personal digital assistants (PDA), Global Positioning System (GPS), MP3 and video functionality into a smart phone, further exacerbating the problem severity.

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Another trend of portable devices is to add high-capacity micro-hard drives, so smart phones, PMP and so on with high-density storage capacity. Used in most of the hard drive has a diameter of 1 inch or smaller discs in the disc rotation speed up the process, the peak current demand may be as high as 500mA, this is undoubtedly to the tight power budget even worse. 2.5-inch, 3-inch or even 5-inch color lcd screen makes the gradual introduction of a highly efficient LED backlight and the LCD bias power supply continues to be closely watched | Regulators management techniques. In addition, MP3, PDA, GPS devices and laptop computers widely used USB interface, both data transfer and charging a single miniUSB interface to become the future development trend of mobile phones, which also requires a new battery management and power management chips.

Fortunately, the continuous development of power management technology is to meet the portable consumer electronics products to the battery life, functional integration, reliability, form factor and cost of these events from conflicting application requirements. For example, using the power path management technology, battery charger IC allows to charge the battery at the same time operating system; combined switching regulator and LDO regulator advantage of the new power management IC to further improve the power conversion efficiency; dynamic power conditioning technology effectively improve efficiency in the use of load power; Power Management Unit (PMU) is in a very small area where integration of almost all power features, to minimize the power system footprint. This article will focus on products for portable consumer electronics applications, battery charge management IC, LDO, DC / DC regulator, PMU, LED power driver IC power management techniques such as the latest trends and solutions.

Power path management technology to meet the demand for electricity supply while charging and load

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Most of portable consumer products generally are available through an AC adapter, a USB cable or a Universal Li-Ion / Li-polymer batteries to power. Sometimes people want to charge to the device while continuing to watch video, phone, or play games. To meet the charging process in the system, high-current requirements, it is likely the charge current is relatively small, resulting in inaccurate charge management directives phenomenon. Therefore, the supply of power between the path management is very important.

Linear Technology's LTC3555 to resolve these problems, it has AC adapter, USB cable and lithium-ion batteries seamlessly between the power path management, and follow the standard USB power. The chip also has an offer of up to 1.2A charge current of a fully functional lithium-ion / Li-polymer battery charger, as well as three high efficiency synchronous buck converter (used to generate the majority of USB peripherals require low-voltage rails ). LTC3555's power transmission method is different from the existing battery and power management IC (the latter is the charger feed system). In such systems, the external power supply is not directly power to the load, instead of using AC adapter or USB port to recharge the battery, then battery power to the load. If the battery is deep discharged, then the load was in power there will be a delay in the process. This is because the battery charge amount to obtain the required minimum can not be before the draw power from it. LTC3555 can be used to eliminate the delay, allowing portable devices to a wall adapter or USB power supply immediately after the power-on access. In addition, the chip will also load all of the available unused power is used to charge the battery.

"It can bring two advantages, namely, to eliminate charging delay, and allow the battery charging and load supply at the same time, thereby prolonging the effective functioning of the application time, and when connected with the USB cable to speed up the charging speed. This power management Another advantage is that method can be used in the AC or USB power supply situation to improve efficiency. "Linear Technology Product Marketing Manager Tony Armstrong said.

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In addition, mobile phone charger and interface technology standardized in line with people's needs, a single miniUSB port for data transmission also used for both power and become the future trend of development. TI's single-cell lithium-ion battery charge management IC BQ24070 precisely to meet this need. As a TI high level of integration bqTINY-III series of charging and system power management device 1, which integrates 2A AC power switch, 1.5A charging FET, current sensor, reverse blocking protection and thermal regulation such as battery-management functions. It uses TI's dynamic power path management (DPPM) technology, can be supplied to the system while independently charging the battery, and according to the system voltage dynamic adjustment charge current.

TI's high-performance analog products senior marketing engineer HE Xin Long introduced the Road, "BQ24070 support a single miniUSB interface automatically selects AC Adapter or USB-powered, and can choose different according to different charging rate of power supply. When the power supply shortage The charging Wi-Fi, Bluetooth and mobile TV and other functions that require momentary high-current, the battery power can be added. "

In recent years, multi-function battery-power management IC affordable battery charging, DC / DC conversion, battery protection, battery monitor or power supply options. For example, TI's TPS65800 also USB port and AC adapter power supply to provide a flexible charging and system power path management. It by the Li-ion or lithium polymer battery-powered applications, also has more power output and several circuit choices. TPS65800 in a separate charging the battery when the power supply system also reduce the battery charge and discharge cycles. It automatically selects the USB port or AC adapter as the system's power. In the USB configuration, the host can be set in the pre-charge rate of 100mA, and 500mA choose. IC based on the system load on the USB charge rate dynamically adjusted to maintain the charge rate of 100mA or 500mA.

Microchip's MCP73811 and MCP73812-type (MCP7381x) Lithium-ion / Li-polymer charge-management controllers also provide fully integrated charge-management functions, as well as up to 500mA selectable or programmable charge current. They are compatible with USB, also equipped with integrated current sense, pass transistor, as well as on-board reverse-battery protection. MCP7381x charge-management controller is compatible with USB output-power specifications, the majority of personal computer through the USB port to take power without the need to connect an external power adapter. In addition, these devices have on-chip thermal regulation function, can be reduced when the temperature rises above safe levels of charge current.

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The battery recall and IT Industry

The battery recall and IT Industry

Battery Li-ion battery recall sweeping the IT industry, a tough 15-year spread

Sony laptop battery recall incident a year later, a similar incident once again plagued Japanese home appliance businesses, the protagonist of this incident is Matsushita Electric Industrial Co., were recalled product is the cell phone lithium battery, this incident also shows that the battery industry is facing a The enormous challenge.

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Nokia Tuesday announced that part of the Matsushita-made lithium-ion batteries overheating problems, the company will take the initiative to recall these products and for the user to replace the battery, it is learned, and the recall of events up to 46 million mobile phone. It is not clear that the company would recall and replace the number of batteries, but the number of recalled Sony batteries are projected to more than four times higher than the incident has become the industry's largest battery recall incident, together.

Since August last year, Dell announced that Sony held a large-scale production for notebook computer lithium-ion batteries, the battery industry has been plagued by such incidents. Almost all the major computer makers have announced and recall of Sony laptop batteries, while Sanyo Electric has recalled over mobile phone batteries and notebook batteries.

Battery recalls continue to occur on the one hand reflects the business-to-consumers more prudent and responsible attitude on the other hand also shows that the battery there are still many problems in production. Rechargeable lithium batteries in the past 15 years has been a laptop computer and cell phone industry, one important factor in the rapid development of lithium batteries is relatively cheap, light weight, environmental performance is good, much better than nickel-chromium batteries.

On the other hand, lithium battery current generated by larger, more complex manufacturing processes, heat and even easier to overheat, short circuit occurs when the consequences are more serious. Last year, some Sony laptop battery fire incidents have occurred. The recall Nokia Panasonic lithium battery allegedly occurred because the battery charger overheating.

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Mobile phone industry and the notebook computer industry's rapid development has exceeded the pace of development of battery technology, product features but also increasingly improved battery performance higher and higher requirements.

Lithium battery incidents occur frequently prompted some manufacturers to take a more cautious attitude. Toyota hybrid vehicle delay in the use of lithium battery plan. Nevertheless, industry experts still believe that despite the limitations of lithium batteries, but in the foreseeable future, it is still the most practical battery technology.

Sony announced this week that the company will spend 97.6 million U.S. dollars in Singapore to build a cell phone battery manufacturing plant in order to consolidate its market share. The plant will use more advanced lithium-ion polymer technology, the factory is expected to be operational by August next year, the initial monthly production capacity will reach 1 million by 2010 will reach eight million. Toshiba's ongoing efforts to develop alternative energy technologies, such as fuel cells, this battery does not use chemicals, but the battery for commercial still have a long way to go.

Panasonic is currently the world's four largest manufacturers of lithium batteries, the company said its the battery problem is generated in the manufacturing process. When used with an insulating layer to prevent short circuit damage occurs when the overheating arises. Nokia said that so far, Panasonic lithium battery overheating problem caused by only 100 cases were reported, but no serious injuries. However, Nokia will continue to take preventive measures to replace all the production date of December 2005 and November 2006 between the same origin as the Osaka battery.

Panasonic is expected to bear most of the costs to replace the battery is estimated to cost up to 170 million U.S. dollars. Affected by this news, yesterday in Tokyo Stock Exchange, Matsushita shares fell nearly 5 percent, to close at $ 2015.

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Renesas Technology Corp. today announced the launch of R2A20051NS lithium-ion battery charge control IC, it applies to products such as digital cameras built-charging circuit. Sample was October 3, 2007 began in Japan.

R2A20051NS uses the industry's smallest 2.7 mm x 2.5 mm package size, while integrating a charging FET switch, as long as the addition of a resistor as a peripheral device charging circuit can be achieved. In addition, a number of various on-chip protection functions can simplify the security design.

"Product Background"

With digital cameras and other portable devices become more compact and slim, the installation of these devices smaller battery charging circuit is growing. At the same time, providing longer working hours, high energy density lithium-ion batteries growing popularity has brought with various protection features of the charging circuit needs to ensure a safe charging and the necessary complexity of security design.

There are two types of charge control, ie use a separate charger or a built-in charger. Renesas Technology currently mass production and widely used M62249FP lithium-ion battery charge control IC integrates most of the security charge protection for built-in charging control applications. Now, in order to meet the needs of smaller charging circuit, Renesas has developed the industry's smallest package size R2A20051NS, without changing the protection achieved under the conditions of the functional optimization.

"Features"

R2A20051NS main functions are as follows: fujitsu siemens esprimo mobile v5535 battery , fujitsu siemens esprimo mobile v5555 battery , S26391-F6120-L470 , SMP-EFS-SS-22E-06 , fujitsu lifebook b6210 battery , fujitsu lifebook b6220 battery .

(1) the industry's smallest package size, integrates a charging FET switch

The current Renesas products (M62249FP) using 5 mm x 5 mm package size of 28-pin QFN (quad flat no-lead package), R2A20051NS use a smaller 2.7 mm x 2.5 mm 10-pin SON (small no-lead) package This is the industry's smallest package. This is the most common applications by limiting the non-protection and reduce the number of pins to achieve. When compared with current Renesas products, the device can reduce the mounting area of about 75%, while integration of the charging FET switch, which allows for a smaller charging circuit.

(2) Almost all of the security protection for all the help to simplify charging safety design

R2A20051NS on-chip protection functions the same as with the current M62249FP, in fact, including the security lithium-ion battery all the necessary protection features, such as the adapter is detected, over charging, over-voltage and temperature protection features, as well as monitor the charging time of the two timing device. Take advantage of these features to add at least as long as the R2A20051NS components, you can implement complex security design of the charging circuit to help simplify the development process. In addition, you can achieve the 4.2 V +/- 30 mV of the charge control voltage to achieve high-precision charge control.

(3) The built-in chip temperature detection circuit

R2A20051NS chip integrates a temperature detection circuit, the charging process based on the chip temperature limits the charge current value. Moreover, if more than a predetermined temperature, it will mark the error and run charge thermal shutdown features to help achieve a more secure implementation of the charging circuit.

Future plans include the development and timely release adjustment through the use of digital products to meet the demand for more features.

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