Archive for ‘multitouch’ Category
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A new large-format multi-touch technology launched today by DISPLAX, a developer of interactive technologies, will transform any non-conductive flat or curved surface into a multitouch screen. The DISPLAX Multitouch Technology, believed to be the first of its kind, has been developed based on a transparent thinner-than-paper polymer film. When applied to glass, plastic or wood, the surface becomes interactive.

It can be applied to flat or curved, opaque as well as transparent surfaces up to three metres across the diagonal. It is hyper sensitive, allowing users to interact with an enabled surface not just by touching it but, for the first time, by blowing on it, opening up new possibilities for future applications. Currently, the technology can detect up to 16 fingers on a 50-inch screen. The number of fingers detected is expected to increase as development progresses.

Based on patent-pending projected capacitive technology, DISPLAX Multitouch Technology uses a controller that works by processing multiple input signals it receives from a grid of nanowires embedded in the film attached to the enabled surface. Each time a finger is placed on the screen or a user blows on the surface, a small electrical disturbance is caused. The micro-processor controller analyses this data and decodes the location of each input on that grid to track the finger and air-flow movements. The DISPLAX Multitouch technology controller combined with a projected capacitive nanowired film is a lightweight and highly scalable solution, ranging from seven inches (18 centimetres) to three metres across the diagonal thus opening up a wide range of commercial applications suitable for indoor or outdoor displays.

The DISPLAX Multitouch Technology will begin shipping in July 2010. The prices will be very competitive and depend on size.


  • Multi-touch detection: DISPLAX™ Multitouch Technology detects 16 fingers simultaneously on a 50-inch screen (to increase as technology development progresses).
  • Air-movement detection: DISPLAX™ Multitouch Technology detects when someone blows on the surface, measuring the intensity and direction of the air flow.
  • Large and small: As small as 18 cm and as large as three meters across the diagonal and thinner than paper.
  • Transparent: DISPLAX™ Multitouch Technology is completely transparent and allows the user to see through any transparent surface it is adhered to.
  • Light-weight: A 50-inch screen weighs about 300 grams, making it easily transportable and easy to install.
  • Versatile: Can be applied to any non-conductive flat or curved surface including glass, plastic and wood less than 15 mm thick. It works in daylight or at night, indoors or outdoors, and is not affected by light conditions.
  • Durable: When using rear projection, the film is applied to the reverse of the surface, protecting it from scratches or other damage, with no need for contact with the material.

Nuit Blanche: Multitorch

datePosted on 12:53, October 3rd, 2009 by Many Ayromlou

Toronto Nuit Blanche was a blast. For those of you who don’t know:

Nuit Blanche (literally White Night or All-Nighter in French) is an annual all-night arts festival. Its exact beginning is disputed between Paris, St Petersburg, and Berlin, but, taking elements from all of these, the idea of a night-time festival of the arts has spread around the world since 1997, taking hold from Montreal to Madrid and Lima to Leeds. A Nuit Blanche will typically have museums, private and public art galleries, and other cultural institutions open and free of charge, with the centre of the city itself being turned into a de facto art gallery, providing space for art installations, performances (music, film, dance, performance art), themed social gatherings, and other activities.

This year the local Toronto Artist and Ryerson Image Arts Student, Mike Lawrie and I have entered a Independent project — Multitorch — under the Ryerson University/Faculty of Communications And Design’s Lightup the Night. The project involves a 23’x13′ (26′ diagonal) projection weighing in at 4096×2048 pixels driven by a multitouch engine. Up to 10 Infrared LED torches are handed out to the audience and the system will allow them to interact with the projection in front of them. As far as we know this is the largest (and highest resolution) multitouch screen deployed to date. The project uses CCV (Community Core Vision) tool for tracking, OSC (Open Sound Control) for communication and a 4500 line custom java visual engine. Here is a short 5:00 minute Timelapse video.

LaserTouch….Multitouch using a projection TV and Lasers….

datePosted on 22:52, February 18th, 2009 by Many Ayromlou

Yep you heard right….freaking lasers…..yummy. These guys have managed to turn a rear-projection TV into a multitouch surface using IR lasers. Absolutely fantastic as it (using lasers) makes the whole design a lot simpler and gets rid of the the tracking problems associated with regular IR LED based tables and ambient IR light. Although the original laser idea comes from gang, stuffing everything inside a 16″ deep tv is a nice touch :-).

Below is a good rundown of the pros and cons of this setup vs. FTIR:


  • Excellent tracking results, even with lots of ambient IR light.
  • Zero-force: Feels very natural to work with.
  • Comparatively easy to build.
  • Comparatively cheap to build.
  • Comparatively fast to build.


  • Already “sees” the finger slightly before it touches the surface (since the laser light plane extends to about a millimeter above the surface).
  • It is very sensitive.
  • Availability of infrared lasers*
  • Lasers are dangerous for the eyes.
  • Potential problems with occlusion.

*As long as you are careful with the lasers, your eyes will be safe: Just accidentally looking into the laser for a second won’t do any harm, it’s just that you shouldn’t stare into them for long. However, since the infrared lasers also emit a bit of (red) light in the visible spectrum, you’ll notice immediately when you’re looking into a laser by accident, so you can turn your head away. It’s really nothing to worry about too much, but it’s most definitely not an ideal setup if you want to work with children, for example!

Their blog page outlines everything…..and I mean everything.