CeBIT. Part 3. More smart, good and different
While the display is lit
Market for handheld computers gradually matures and acquires the features inherent in the increasingly market for personal computers or laptops. Talking about it and more and more increasing number of models of PDAs, and reducing the cost of computers themselves, and, of course, the emergence in this market segment growing number of manufacturers. No wonder that with such an incredible variety of computers (and in our review of them will be 24), the user is practically impossible to select the PDA itself, but the information coming from the computer itself is so scarce that an accurate opinion about any handheld computer is difficult. Take for example a typical configuration of PDAs running PocketPC 2002: Intel XScale processor 400 MHz, 64 MB RAM and 32 MB ROM, 3.5''screen. What is it? We now find it difficult to reply so soon, what is the computer: it can be Toshiba e740 or ASUS MyPal A600, but maybe this Pocket LOOX 600. It seems to be the same set of parameters, and how much can be different computers. There is a fair question, but maybe they're all the same, and the need to buy any, which will attract more design or who just turns out to be cheaper? To answer this question unequivocally, first, we reviewed all publications on handheld computers in print and online in the last couple of years. And paradoxically, the answer to our question in its entirety could not be obtained. The information was completely fragmented and the overall picture did not develop. For example, a characteristic of such a statement: "This handheld runs 4:00 in the second division of illumination, but this one - 6 hours on the same second division." Which PDA is better? Probably the one that works longer, but if placed next to these computers, it would appear that the same division of the display of the first CCP will be two times brighter than the second. And, indeed, as you can compare the PDA with each other?
All PDAs are divided by type of backlight into two categories: computers with a reflective backlit transflective with backlight. For the former, the maximum contrast does not exceed 82% (1:10), for the second better than 94,5% (1:36).The first category includes: DOT 320, Palm m515, Palm Tungsten T, Pocket LOOX 600, ASUS MyPal A600, Rover PC P5, Mitac Mio 528. The second category: Sony Clie PEG-SJ22 / U, Sony Clie PEG-SJ33 / U, Clie PEG-NX60/NX70V, Sony PEG-TG50, Toshiba e750, Dell Axim X5 Basic / Advanced, iPaq H1910, Palm Zire 71, Rover PC P3 / P3 Plus, ASUS MyPal A620, ViewSonic v35, iPaq H3970, Sony PEG-NZ90 / U and the iPaq H5450.
Battery life when playing music defined by the time playback of MP3 files with the flow of 128Kb / s with the screen off PDA (where possible).
Battery life for video playback was determined with the same brightness displays 30Kd/m2 time play the file with the flow of 600Kb / s..
What should I test?
To select the comparison, first and foremost, we must understand why you do need a PDA.Display
Most of the time (approximately 90-95% of the time working with PDA) happy owners of handheld computers use them as a device for obtaining visual information or data entry. It's - reading electronic books, e-mail, edit documents, notes, notepad. Less often - to listen to music, watching videos or work in games. But in all these cases, except for listening to music, we are working with the display, viewing any information from this same screen. And most of these cases - is to work with text. Perceptual quality of the text a person determine the contrast and brightness. To determine the quantity of contrast used the following method. Simulated conditions equivalent to reading e-books under different conditions of ambient lighting. PDA display was illuminated at an angle of 40 °. The detector of optical radiation intensity meter was used, taking into account the spectral sensitivity of the human eye. The distance between the detector and the surface of the display was 30 cm then displayed a chessboard with black and white cells and measured the brightness of the white (Bmax) and black (Bmin) cells. Then the well-known formula to compute the optical contrast. All measurements were performed for four types of exterior lighting: in total darkness, in conditions equivalent to the coverage of a train underground, in conditions equivalent to office lighting, and strong solar illumination. Built four curves the values of contrast, depending on the level of backlight: backlight is switched off by up to a maximum illumination. Immediately say, that in the case of light off the contrast in the dark is always zero. The range of brightness displays all PDAs can be seen on the chart.Runtime
PDA in the first place is attractive because, no matter how corny it sounds, it is pocketable. What does this mean? This means that the size of a computer small enough to fit in your pocket. Consequently, it can always be with you, did you not burdened: not in the office, on the road, often where there is no access to electricity. Consequently, the computer must, simply must have a long battery life. And that is true, what kind of computer that has a battery sit down after 1-2 hours. Second, after the display quality, the requirement for a PDA - it's battery life. To check the battery life in read e-books has been selected program iSilo. This application starts with auto-scroll text (when we read, we do not just look at the screen, while leafing through a book or on their own using hardware buttons or use the autoscroll feature - both consumes some portion of battery power). Speed auto-scroll chosen the same for all measurements 20-25 characters per second. In this way, we measured the battery life, depending on the level of illumination (backlight from completely off to maximum brightness). Since even the lowest brightness of the display is enough to read in almost any ambient lighting condition, then the graph shows a comparison of computers in autoscroll mode, the text with a minimum display brightness.Performance
Performance requirements Pocket PC depend on the type carried out their tasks. By types of tasks PDAs can be divided into four categories: organizer, music player, video player, game station. To work on documents, notebook, calendar, diary, organizer and e-book reader does not need a special performance, are all available in the market of PDAs cope well with the function of the organizer. To play music in greater need is not high performance computer and hardware capabilities. Most modern PDAs running PocketPC 2002 have the opportunity to work at a lower frequency of the processor (power-saving mode - usually with a frequency of 200 MHz) and thus actually increase the battery life of your computer. If such a regime exists in the CCP, for reading electronic books, or organizer functions, I strongly recommend to switch to this mode. Loss of performance, you will not notice, but the increase in battery life will feel like. Performance plays an important role when it comes to video playback. To real-time video decoding with the flow in the 500-600 kb / c, you must have a high performance handheld computer.To analyze the performance of video playback for computers running Pocket PC 2002, used the program of video playback Pocket TV Enterprise Edition (specially adapted for processor PXA). In order to evaluate the performance of the CCP, the video played out four different resolutions and different values of the data stream: 240h120, 300 kb / c; 288h208, 400 kb / c; 320x240, 500 kb / c, and 320x240, 600 kb / c. By launching all these videos from the memory of PDA, compared with the numbers falling in the second frame (for all the clips were originally 24 frames per second). By the number of "dropped" frames estimated, to play some movies fit this pocket PC. Gaming applications for both PC and Pocket are of two types: not requiring high performance handheld computer (board games, card games, puzzle games), and vice versa, with more claims to computer resources (arcade games, simulators, "Shooter" ). To analyze the overall performance of the handheld computer (only in case of Pocket PC 2002) used the latest version of the synthetic test from the company's Virtual Office VO Benchmark 3.0 with built-in test plots.Cost
At a cost of all handheld computers can be divided into three categories. The first - a category of low cost computers. The cost of the CPC is low and does not exceed $ 350. Usually it is computers running PocketPC 2002 that differ from their more expensive brethren truncated ROM, or PDA with Palm OS entry level. The second level - are computers the middle class. This is a classic Pocket PC or a PDA running Palm OS 5.0 or equipped with a built-in wireless connection standard Bluetooth or Wi-Fi, or with higher specifications. And finally, the third category - an expensive business model for those who need high performance and wireless capability. This is Sony's handheld with built-in Bluetooth, camera or PDA PocketPC with built-in 802.11b, Bluetooth and a fingerprint reader.Test
On the basis of the above characteristics, I have tried to analyze the specifications of most commercially available handheld computers. Description of new products was carried out in more detailed form, unlike older models, PDA.Ericsson R380 - an elegant solution to pressing problems
Sony CLIE NX-73V: and who designs expensive?
So, when the spacecraft ... Sorry, it's from film classics. At a time when Russian buyers are becoming "clamshell» NX-70 from Sony, aggressive Japanese manufacturer throws in the market model NX-73, which is minimally different from the previous one, providing, however, updating the product line, clearly deserves a medal for rabid dynamism. Today, for the pleasant three at the end of the model number require extra 20-40 dollars. Look at what else we get for the money. The first (and as it turns out, the most important) the answer to the question we get a glimpse of the building of a new Clie. Its black case immediately brings to mind the revolutionary model of the NZ-90, which is noticeably more expensive, and fits in your pocket easily. Indeed, the design is very similar, and the mix of these models from a distance is quite simple.
The most important external changes, but the actual color of the body, were modified controls. The hardware buttons available on any Palm, became small and round, slightly different from the alphanumeric block. Push your finger is not very convenient, but it can be done with stylus. It is interesting that over the screen there is a second set of buttons to call applications. It becomes useful when turning the display is set, covering a keyboard. In this mode is very easy to read book, for example. Scroll wheel used for scrolling text, and buttons you can switch applications. It should be noted here that the "up" and "down" is not so expanded in this way is not suitable for handheld games. However, the tiny and highly placed a button on the main keyboard part, too, is not particularly useful as a tool for game control.
The main keypad, which contains English letters and numbers, has proved to be far from perfect tool kit. Because of the small size of the keys to a small convexity and the minimum distance between the buttons, how to accelerate the recruitment will not work - sharply increases the probability of error. Of course, everything can be used to, but for owners of fairly large thumbs this keyboard is very comfortable. Modest space between the keys is also not wasted - here the additional symbols - numbers and punctuation marks. Because of this tightness becomes problematic Russification - labels do not do, and engraving must be virtuous and very compact, suitable only for holders of sharp vision. In the dark, the situation is more complicated - the keys have a dim yellow lighting, which is very weakly scatters the darkness of the symbols plotted near the buttons. Still not obvious one of the major issues of our time - why the presence of a full keyboard control, including navigation keys and Enter, alpha-numeric keypad, there is no possibility of the menu? But enough about the keyboard.
With the rotating block, on which the camera lens, missing indicator and shutdown button. As in the NZ-90, the switch now combined with a latch Hold. This decision still seems questionable, since the on / off the backlight prolonged retention of this switch is not particularly convenient. Indicators have moved almost on the end of the axis of rotation, so they can be seen at any position of the screen. Stylus from NX-1973 telescopic rather subtle and not spring loaded. It looks and fits the hand as a "toothpick" 250-dollar handheld, using it is not very convenient.
A cursory examination makes it possible to find the ends of other conventional controls - navigation wheel, a button control video camera, a slot for Memory Stick (Pro!), headphone jack, slider, which includes voice recorder, etc. At the bottom is a slot for cards Compact Flash. Unlike previous models, with the NX-73 does not require any hacking tricks to insert this memory card slot, the system will immediately understand a flash, easily recognizing even those that have a very large amount. Why Palmu polgigabayta memory - a complicated question, but a theoretical possibility. To record video, however, CF slot is not used here need fast cards Memory Stick Pro. In addition to these nuances of the outer media, filling the CCP does not differ from its predecessor. It is rumored that there had to be installed a new processor PXA263 from Intel, but judging by the amount of available memory (16 MB), it is not - the 263rd has 32 MB of memory "on board". Installed on a new PDA, of course, PalmOS 5.2, significantly "enhanced" set of applications from Sony. To begin with the main novelty - the application Decuma. This alternative system of handwriting, which comes along with Graffiti 2. It recognizes the usual handwritten characters to be entered separately, one can in a few strokes. Once the word is whole, it is a one-touch inserted into the text. Naturally, Decuma uses a virtual Graffiti area, so as not to overload the screen. Incidentally, he is the same as in all lines of Sony NR / NX / NZ - 320x480 and 65 thousand colors, TFT.
All other applications are well known fans of the series NX, so we restrict short-listing them: Audio Player, Album, Camera, Files (database management in the memory), Mail, Memo (handwritten notes), RMC (Remote Control), Viewer, Flash player , Movie player, Movie recorder (only on cards Memory Stick), NetFront, Photo editor, Photo stand, Picture viewer, Voice recorder, WA clock. Summarizing the above, we can say that Model 73 is different from its predecessor for the number 70 modified design (for our taste - more noble and elegant), small ergonomic modifications to better support for memory cards and slightly updated software. Given the fact that software problems can be solved by using software from third-party developers, it must be noted that most of the price difference falls on the design. If you want to own a machine that looks like a "heaped» NZ-90, the NX-73V - the perfect choice. The authors, translation:
I-Mode: lessons from Japan
In Japan, cellular phones, it seems, are quietly replacing desktop computers with the position of the main devices to access the Internet. NTT DoCoMo, the leading provider of wireless service in Japan, monthly connects more than 400 000 new customers to the services of standard i-Mode. With high-tech phone i-Mode-user can get the latest news, financial information and, of course, have fun. The guide DoCoMo fond of saying that cell phones are no longer needed just to talk, but rather to use or how to say computer scientists, for "yuzaniya. The streets of Tokyo, visually confirm this view. Cell phones - everywhere. Some make calls, but most look at the screens. They quickly push the small button, wandering the back streets of the menu. At the bus stop, train station or the subway reading the Japanese news, e-mail, which generously used animated pictures. Java allows the benefit of its owners to download new software, which adds to the already considerable capabilities. Anyone can pay for purchases, playing with toys, getting information from corporate databases - all from your phone. The latter specifically advanced models allow you to take photos, which can then be sent by mail to your friends or colleagues. In Japan, the technology of wireless communications have reached unprecedented heights. For two years, DoCoMo has attracted nearly 20 million customers. No wonder the company is the largest ISP in Japan and second only to AOL in the world. i-Mode recognize the most successful consumer product in history. And now the company is preparing for aggressive expansion into Western markets. Their appearance i-Mode has provoked a permutation of forces in the global wireless market. This significant success is based on an innovative business plan, under which the system was created based on the packet data. Thus, we have introduced IP-services. In 1999, DoCoMo pioneered in the operation of a network based on packet switching, becoming the market leader in the promotion of new technologies. And here the Japanese, as has always been ahead of the rest. In Europe and the U.S. package technology will be added to existing networks, based on the principle of circuit switching, but it will happen only in the middle or the end of this year. In Britain, Vodafone has launched a service with a packet of April 2. These networks are designed for data transmission. Once the phone connects to the server, channel remains open constantly, even if the exchange does not go. Due to the fact that one channel can be shared between multiple clients, the frequency spectrum is used more efficiently. This technology is also called 2.5G. Company DoCoMo pioneered 2.5G. I-Mode phones are equipped with a screen size of a business card, but the magnitude does not exceed the European model. Regardless of manufacturer, the keyboard all the phones have a button "i". When you click on her phone connects to the server DoCoMo, shows the home page i-Mode and go into standby mode. While the user watches the content, no communication with the server unavailable. Only after selecting any item telephone requests data, and then again waits for further "guidance". During the connection fee is charged only for the received IP-packets, but not for time spent on line. Sending and receiving mail or pictures is quite a bit, and all these costs simply added to the monthly phone bill. Ability to collect payment for small data packets (micro) is one of the main advantages of packet-switched networks. i-Mode has both free and paid services. Moreover, 90% of the collected money get providers of these services. The most expensive costing from 100 to 300 yen per month. This favorable pricing attracts new providers and new customers. Number of sites i-Mode has exceeded 30,000 and continues to grow steadily. Foreign companies are also trying not to miss such a wonderful market. Yahoo and Google - one of many foreign firms to establish their own i-Mode sites. Why are millions of Japanese use the services of web-services on the screen size of a business card? Part of the reason for this is a marketing assault on potential users.Many of those who subscribe to i-Mode, in fact, indifferent to the web-technologies. DoCoMo to connect your phone to the internet, but did not aim to inform the customers. After launching i-Mode Company is constantly avoiding some mention of Web'e, which seems most Japanese are too technocratic, difficult to understand and development, universal freemen for crowds committing excesses of adolescent bullies. Instead, it was established "reserve", which contains only the data specifically tailored for Japanese consumers. This is a brand-"brand", a new exciting service for people who are in constant motion. Even today, many users have no clue about what they spend hours every day "sit on the internet. No, rather "go to step i-Mode'oy. Initially services were targeted at the youth market, where they received great popularity. Millions of teens download animation clips, and pictures of idols, the entertainment industry use them as "wallpaper" or sent to friends via e-mail. And these pictures and cartoons bring millions of dollars in profit providers of such content. As a markup language i-Mode uses a limited subclass of HTML 4.0, which is called cHTML. This is an important cause of the avalanche growth of content. cHTML is easy to learn, and it can be created using an existing program. Developer of the technology, the company Access, was founded by such giants as Sony, NEC and Matsushita. The aim was to create such a standard that takes into account a small amount of memory and weak processing power of mobile phones. cHTML does not support tables, image maps, different fonts, colors, backgrounds, frames, cascading styles, and image format JPEG. Support for the latter format will be included this summer, at the next building power networks. In the meantime, use a more compact GIF. The fact that most of today's i-Mode phones have a display with 256 colors, and new models will have screens with 64 thousand colors. i-Mode is often compared to WAP, but this comparison is not entirely correct. As the name implies WAP - a protocol for wireless data transfer. i-Mode - so much more. This is the fully functional network. WAP could not get a great development due to the fact that it is used in networks of second-generation switched networks. The result is a slow connection and high tariffs. Example of Japan shows that WAP - this is also a well-designed protocol. Local rivals DoCoMo provide WAP services in modern packet-switched networks and their services signed by about 8 million customers, more than in the whole world. And so, even despite the fact that WAP uses WML (Wireless Markup Language - a markup language for wireless connections), which is much harder in training. In addition, developers of solutions for WAP are required to pay royalties of Phone.com, the creator of WAP. In the near future 2.5G network DoCoMo (the so-called network of "second-half" generation) will be replaced by CDMA-third-generation networks, which are theoretically available speeds of up to 384kb / s. The new network will be capable of delivering short video clips and other multimedia information. But even before the introduction of these technologies improved data compression protocols, and other new items will achieve similar speeds and networks 2.5G. Sources, Materials:
Palm Tungsten T2: position has passed - the post made
Generational change - an inevitable thing. But the speed with which the company manufacturers handheld computers update their model series, never ceases to amaze. It seemed only yesterday that the presentation of Tungsten T (last December). While this model was the "heaped" of all handheld company Palm Inc. And just seven months after the model is removed from production and replaced with a newer machine - Tungsten T2. Finally, this machine came into our hands and we can share with you my impressions of the live »T2. I do not know whether you love to watch the second part of the acclaimed blockbusters - usually conflicting views. But in this case, we recommend that, because the second part of a good director is not worse, and often even better than the first.
Just as in the Tungsten T, the key "second" flash, so you can customize the buttons as you are comfortable and easy to use palm in "folded" state. True, if you like to use a large number of buttons, the computer will still have to sometimes lay.
Unlike the Tungsten T, the new machine more successfully implemented the concept of one-hand operation. As a former Palm TT new Palm TT2 has a fairly large and comfortable five-way navigation button. Office of the navigation button is easy, and above all intuitive. Now with the help of (two-second hold button in the lower position) can cause the menu Applications. It is also possible to manage within an application - click on the different sides of the joystick will cause a variety of menu options (search, list of possible connections, etc.). In this case, it becomes even less attractive area of Graffiti: You can control the device with one hand, the icon next to the Graffiti area is almost no need (even adjust the brightness caused by holding the power button), and can now enter text in any part of the display, not expanding the handheld.
Now let's consider more in detail the differences of the new models from old ones. First, the operating system. At a novelty is brand-new Palm OS 5.2.1 with Graffiti 2 support and the ability to enter text into any area of the screen.
Secondly, memory. At T2 ROM-a - 8MB (1MB goes to the owner), but increased to 32MB of RAM, of which 29.7 MB is available to the user.
Third, the display. As mentioned in previous review, in contrast to the Tungsten T, the new Pocket PC has a very bright and high contrast display with backlight transflective type. The display is really bright - brighter than the Zire 71 and Tungsten C. Perhaps the closest in performance is a display handheld computer hi-end category Sony PEG-NZ90V. Since the work with the Pocket PC in 90% of cases - is to work with on the display of information, the use of such high quality as the structural matrix can not but rejoice. Textual information and image with such a display are perceived almost as a TFT-monitor. Fourth, Bluetooth. Built-in Bluetooth adapter has a special function Decrease in energy consumption, which, given the large "voracity» Bluetooth-devices, is very commendable.
Causes a slight regret that when you upgrade the PDA developers have not changed the processor. It would be possible to use a favorite market Intel PXA (even at a frequency of 200MHz), which would still be "poshustree" than the OMAP 1510.
Video playback decent enough, but still not as fast as a Tungsten C. Miracles, unfortunately, does not happen. It is clear that Intel PXA255 400MHz faster than 144 MHz OMAP 1510. Playing video from Tungsten T2 is twice slower than the Tungsten C. Now let's see how the new Palm TT2 works with memory cards. Test results VFS Mark:
From the test results we can conclude that the T2 «quicker and smarter," his predecessor, but does not say so much. The overall test results at T2 above 15%.
Audio playback was performed using the RealOne Mobile Player with an external memory card.
To play a video program was used Kinoma Player. Time neprervynoy work when playing a movie with a flow 640KB / s is 4 hours and 15 minutes with a minimum illumination level and about 2 hours and 20 minutes at the maximum level of illumination.
Gain in battery life at T2 compared with the Tungsten T is noticeable only when you work in e-book reader. From what we can conclude that the new brighter display has a lower power consumption.
In ROM drive built in the following applications (for comparison, the program for Tungsten T):
On an additional CD drive attached the following programs:
Of these applications, it should be noted a rich set of multimedia programs: Voice Memo, RealOne Mobile Player, Kinoma Player and Kinoma Producer. That is, users can now immediately available to the program to record sound, music and video - something that was lacking the old Tungsten T (with it comes bundled with only a program Voice Memo).
Design and Ergonomics
Design and control of the computer were described in a previous review, so stop in detail on this will be. We only note that the appearance and feel this is the same good old metal casing Tungsten-and T.Specifications
For clarity, we present a table comparing the new Tungsten T2 with the old Tungsten T.Tests Palm Tungsten T2
Performance with video was measured using the program Kinoma Player. The program Kinoma Producer were made 5 videos with different values of flow (from 480 to 1000Kbit / s).Runtime Palm TT2
To check the battery life in read mode, used the program MobiPocket Reader 4.6, which operated in the automatic scrolling of the text at a rate of about 25 characters per second.Measurements were carried out only until the first systematic low-battery warning.Software
Greatly changed the look of the panel with the settings. Old items settings slightly rearranged and added new paragraphs 2 and Graffiti Writing Area (you can enter text in any part of the display).Conclusions
New very bright and high-contrast display, a doubling of the amount of RAM, a new way to enter data in any part of the display (Graffiti 2), the ability to control the device with one hand and a large collection of software - all to say that ucovershenstvovaniya made by developers, are not purely cosmetic, and the Tungsten T2 has turned out much better than its predecessor.It remains only to extend the display area at the expense of Graffiti (which is now practically is not necessary) and replace with a more powerful processor. But all of this, perhaps we will see in the next series. The authors, translation:Third generation mobile network in Moscow or
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