Friday, April 29, 2011

How to Make a Touch Screen Laptop with Multiple Finger Input

Remember when we wrote about the Laptop Pen from Navisis that allows you to enhance your portable computer and transform it into a digital notebook with handwriting recognition?

That is a great tech gadget that made me think of getting one too in the near future. Now let’s see another cool gadget introduced by N-trig, the provider of the DuoSense technology, which we encountered before when we found out about the large multi-touchdisplay that brought real innovation to the touchscreen market.

Using the same high-end technology, N-trig unveils the world’s first device that combines stylus pen functionality with the multi-touch capability. It is called the Transparent Electromagnetic Digitizer and provides specifications on how to make a touch screen laptop, working similar with the Laptop Pen that clips to your computer monitor, connecting to one of the free USB ports of the computer, while you can write directly on the screen using the special digitizer.

The large difference between this kit and N-trig’s device consists of eliminating the stylus and the USB port requirement, and leaving only a 2-mm screen that applies onto the monitor’s viewable surface, with the connectivity cable plugged into the monitor’s port. This way you get a single device, instead of three, plus the multi-touch capability, which recognizes simultaneous input from two fingers. 

As I was saying, the advanced screen that applies on the monitor is just 2-mm thick weighting 200 grams and N-trig found a smart non-invasive way of enabling multi-touch input with handwriting recognition on your computer, by using standard air gap bonding, pressure-sensitive adhesive, or direct bonding with an intermediary index-matching gel to lower reflection, eliminating the need for special mounting brackets.
The DuoSense technology is based on zero-pressure capacitive touch that senses any finger and pen input, eliminating problems like when using long nails, gloved fingers and standard styluses.

“We believe Hands-on computing will change how the world interacts with computers. From image manipulation and gaming, to graphic and industrial design, N-trig is breaking down the barriers between humans and their machines,” said Amihai Ben-David, CEO of N-trig. “Our technology enables OEMs and ISVs to create new depths of interaction through customization of applications that offer greater functionality, usability and capitalize on our ability to use two of the most basic extensions of the brain – the pen and our fingertips.


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