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MOTO Development Group just showcased a video and photographs of a touchscreen performance test between the Google Nexus One, the Apple iPhone, the Motorola Droid, and the HTC Verizon Droid Eris and just a couple of days before that the US Patent & Trademark Office published a patent application from Apple that reveals one of the next chapters for Apple's multi-touch screen technology. It surely has paid for iphone to patent their touchscreen technology. MOTO Development Group created the simple technique so that anyone can evaluate the resolution and accuracy of touchscreen devices before they buy. To conduct the test, consumers open a basic drawing program and draw a few diagonal lines drawn across the screen. Draw Slowly: On a quality touchscreen, people can draw clean straight lines, even while going very slowly. The image that appears on screen accurately represents the slowly drawn lines. However, on inferior touchscreens, it’s basically impossible to draw straight lines. Instead, the lines look jagged, stair-stepped or zig-zag, no matter how slowly you go. The inferior image results from the sensor size is too big, the touch-sampling rate is too low, and/or the algorithms that convert gestures into images are too non-linear to faithfully represent user inputs. Pressure Matters: A good touchscreen device will produce linear output regardless of whether you're using the full pad of your finger, or just the edge. If you want to test the most extreme performance, draw very lightly with the edge of your finger. The artifacts will increase significantly, showing which device is really the best with a weak signal. Even on a single device, the amount of pressure and the part of the finger you use on the screen has an impact on how well it senses. This is important because quick keyboard use and light flicks on the screen really push the limits of the touch panel's ability to sense. A good touchscreen device will produce linear output regardless of whether you're using the full pad of your finger, or just the dry corner of your cuticle. When comparing devices, make sure to use even pressure across all of them. For the latest Samsung India check http://www.thinkdigit.com John Wells is an expert in personal electronic gadgets including laptops, Samsung Corby, LCD Tvs and Fly Mobile, and many more.
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