Touch screen is not touch screen. Now, there are different approaches for touch-sensitive displays in mobile phones from several manufacturers. We have compared the techniques.
Can you still remember the first steps of touch screens in mobile phones? How, for example, the Ericsson R380? At that time, the displays were still black and white. That was the beginning of 2001. End of 2001 already color in the game came with devices such as the then-just under 1,200 euro Siemens SX 45. Today, about 7 years later, we can only still sentimental smile then techniques on the.
MultiTouch and more
At the moment are the State of the art high resolution display with MultiTouch or tactile feedback. Despite some attempts at competition, Apple is still sets the tone here. But also new and interesting approaches can be observed in current cell phones. So comes the recently available BlackBerry storm with a new control approach. Also, HTC, Samsung, and LG does not sleep from device. The current touchscreen phones of that manufacturers have a significant feedback on the operation of virtual keys. As have all the techniques on your merits and demerits and compared.
Many have tried, none has so far managed BB´s: Apple has the most sophisticated and best functioning operation at the start with his touch for iPhone and iPod touch.
Whether it’s image quality, speed, or the rapid implementation of commands. The Apple iPhone provides the assembled competitors here still clearly in the shadow. The greatest virtue of the MultiTouch function:
MultiTouch: A technique that allows you not only to tap touchscreen (letters or icons) which but to manage the appliance also with gestures behind. For example, you can zoom in on a picture by you pull apart two fingers while touching the corners of the image.
You can also list scroll through by you simply paint over the display. Entering text on the iPhone works well. It does detect typos based on a built-in dictionary. The letters of the virtual keyboard will be enlarged when the tapping and are unerringly right select. With some practice you can so very quickly enter Texto.
Resolution and contrast: The iPhone display has a resolution of 480 x 320 pixels and measures 7.5 x 5 cm. With over 16 million colors, the display has the highest possible color appearance of compared cell phones. There is also the display of mineral glass, which significantly increases the stability and scratch-resistance of the display. Also brightness and contrast are on the iPhone at a high level.
Performance: Also when it comes to the speed, storm, touch & co. can’t keep up with. This is although no primary display function, but here most is to feel. The phone responds to input prompt and fast. The temporal delay in launching applications is indeed noticeable, but not annoying.
The iPhone has a Bewegunsgsensor, which automatically adjusts the display Gymnasium of capable of mobile phones. In practice, this works very well and reliably.
Compatibility of text
With a little practice, you can compose texts very quickly across the screen. Also owner of greater finger cope well with the virtual keyboard. The adoption of entered letters goes in very fast pretty quickly.
The material glass has many advantages but also some disadvantages. So, it is quite heavy, glare-and dirt.
Schmutzanfällig: The iPhone is also very vulnerable to pollution caused by the sticky keys by glass material used and the high-gloss surface. Any touches are immediately visible on the display, it looks grubby fast.
Blender: In strong light, the display is also difficult to detect. Also this is the glass display. The smooth surface reflects incident light very strongly back.
Tactical feedback: Input read is only visually perceive. A function for tactile display input (tactical feedback) is missing the iPhone. The competition has the edge here with different techniques.
RIM launches the BlackBerry storm with an innovation in the touch screen market. Here, the whole display is a large button.
Opinions differ on the storm. Is the new control technology now innovative or immature? We find the former. Yes, you must select each input before a function and then again to confirm.With a little practice, this works but quite well.
Touch buttons symbiosis:
The entire display works with the storm as a mechanical key, which gives a noticeable feedback when using a function. A function can thus select themselves and finally push the enable screen. This has the advantage that you can run any unintended functions because you enable only the application selected previously touch via pressure on the display.
The storm also have MultiTouch, though also very restricted. List entries can be mark with two fingers on the screen. This way, a certain part of a list can simply select and expand per swipe. Not anymore though.
Resolution and contrast: Here the storm can be quite see. With a resolution of 360 x 480 pixels, the cell phone has more pixels than to offer the iPhone. The display is slightly smaller but with 49 x 65 mm. The possible color rendering is good 265,000 colors. The storm provides excellent brightness and contrast values that can compete with the iPhone.
Performance: Working speed of the display area, the storm although not quite up to the benefits of the iPhone is, but clearly exceeds its Windows Mobile counterparts.The storm quickly respond to display input and launches enabled applications quickly.
The new operation is quite smart for individual input, compose longer texts but quickly annoying.
Text capability: What with the select and enable applications still work, is troublesome for the text quickly. Each letter must with the finger on the virtual keyboard and then be selected through pressure on the display. In practice, this means you have to press twice for each letter. Not just efficient.
Display orientation: The storm also can automatically adjust the display at the location of the cell phone. This works here but very imprecise. Even in slight vertical sloping to front or rear, the storm turned the landscape mode. Sometimes the display then responds again at all not on the change of position of mobile phones. In the long term, this is very annoying when operating.
Design: The implementation of new technology requires a slightly different design.With the storm, you see a fairly large gap around the display. Even läst via finger easy in all four directions move the movable display. This has the disadvantage of increased susceptibility to dirt. Accumulated dust and dirt could affect nagativ time on the operation of mobile phones.
HTC: High Resolution
The biggest advantage of our third candidate is in the size and the high resolution of display.
Size and resolution, the display of the touch HD represents the current standard technology for touchscreens. This technique is used in Samsung and LG phones.
Resolution and size: Control center of the touch HD is the large-format, 3.8-inch touch screen. At a resolution of 480 x 800 pixels it razor-sharp displays icons and fonts on 49 x 82 mm. But also the HTC display ranges in terms of contrast and color number not on the iPhone used. The HD, the maximum number of colors is achieved with good 65,000 colors.
Tactical feedback: HTC has solved the problem of the missing feedback through a short vibration of the phone. Be certain virtual buttons is pressed, the user gets signaled the selection by means of vibration. This works quite well in practice. By the way: Not only HTC makes use of this technique. Also the touch screen phones from Samsung or LG type so tangible feedback.
Compatibility of text
Unerringly, thanks to the large touchscreen you can choose many menu items and commands with your finger. As an alternative, the integrated stylus (stylus) is available. Well we liked the quite large virtual keyboard of the phone the touch HD. Letters are good to meet also with larger fingers. Writing works so fast and comfortably.
How many Windows Mobile phones suffers from the slow operating speed the touch-operation of mobile phones.
Performance: Also the HD from time to time lags something in terms of speed. So, once a few seconds can elapse before starts a selected application or the virtual control panel of the finger movement may follow. Specifically, this feature works anything other than liquid in HD. With a raised finger to using the virtual control panel easily the main features scroll through can. In practice, they end up because of performance problems in a completely different application.
Finger control: Admittedly, the TouchFlo interface of HD offers nice details, nice animations and can be operated with a finger. But only up to a point. If you dive too deep into the functions, you will inevitably encounter the usual Windows surfaces, which are almost not to operate without PIN.
Adoption of command When entering commands by touch screen of the HD not accurate enough. We had to part repeatedly choose an application in the test until the HD at all responded.Typing text using the QWERTY keyboard was not affected but.
Conclusion: Iphone Undefeated
The Apple cell phone is now for over a year on the market and still no rival to the iPhone’s MultiTouch operation approaches.
Despite some good approaches of the competition, the iPhone is still unmatched when it comes to performance, the accuracy of the service or to the type of control. Here comes the competition until today not on the MultiTouch display. RIM has adapted this feature in the BlackBerry storm although rudimentary, but limited the possibilities to a simple marking function.
A further important feature the competition however has the edge. When it comes to a significant feedback was input, of iPhone owners look so far into the tube. HTC, LG and Samsung have bought their touchscreen mobile phones here by a short vibration feedback.
With the storm, BlackBerry is an entirely new way. Here the whole display can be felt as a large button press. This has the advantage that you can activate any unwanted applications. Disadvantage: You have to click all letters almost twice also in text input.