Disney develops 'feel-around' touchscreens

The technology could also help the blind to identify objects on a touch screen

The Disney Co. on Wednesday announced a new touch-screen technology that offers users tactile sensations that mimic real surfaces.

In a research paper, scientists at Disney Research in Pittsburgh proposed a tactile rendering algorithm for simulating 3D geometric features on touch screens.

Using electrical impulses, the touch screen technology offers the sensation of ridges, edges, protrusions and bumps and any combination of those textures.

The researchers presented the technology at the ACM Symposium on User Interface Software and Technology in St Andrews, Scotland.

While Disney is not alone in developing tactile response touchscreens, its researchers said the traditional approach has been to use a library of "canned effects," that are played back when someone touches a screen.

"This makes it difficult to create a tactile feedback for dynamic visual content, where the sizes and orientation of features constantly change," said Ali Israr, an engineer with Disney Research. "With our algorithm, we do not have one or two effects, but a set of controls that make it possible to tune tactile effects to a specific visual artifact on the fly."

The touch-screen devices can also receive tactile feedback relating to form and surface topography. If a user is exploring a 3D rendering or a navigational map, depth and elevation information would also be related through touch.

Environmental settings can also be rendered in real time, allowing users access to spaces and surfaces they may not typically have access to. Additionally, the technology could offer information to the visually impaired about their location, helping them to better discern their surroundings by touching the touchscreen.

A demonstration of Disney's tactile algorithm, which uses electrical impulses to offer the sensation of ridges, edges, protrusions, bumps.

Disney said its computer algorithm consists of three main steps: The first calculates the gradient of the virtual surface in need of rendering; it then determine the "dot product" of the gradient of the virtual surface and velocity of the sliding finger; and then it "maps the dot-product to the voltage using the psychophysical relationship."

Called a "slope model", the algorithm would combine with hardware to produce an electro-vibration based friction display to modulate the friction forces between the touch surface and the sliding finger.

When a finger slides on a touch-screen object, minute surface variations are sensed by friction-sensitive mechanoreceptors in a person's skin. The computer algorithm then modulates the friction forces between the fingertip and the touch surface to create the illusion of surface variations.

Disney Research's algorithm has three main steps. It calculates the gradient, or slope, of the virtual surface in need of rendering; It determines the "dot product" of the gradient of the virtual surface and velocity of the sliding finger; and it maps the dot-product to the voltage using the psychophysical relationship (Source: Disney Research).

"We first determined a psychophysical relationship between the voltage applied to the display and the subjective strength of friction forces, and then used this function to render friction forces directly proportional to the gradient (slope) of the surface being rendered," the researchers stated in a news release.

The researchers said a comparison study showed that users are at least three times more likely to prefer the proposed slope-model than other commonly used models of tactile touchscreens.

"Our algorithm is concise, light and easily applicable on static images and video streams," the researchers stated.

Join the CMO newsletter!

Error: Please check your email address.
Show Comments

Supporting Association

Blog Posts

Building e-motional connections with customers

The warm weather is upon us. It’s a time of year often associated with the blossoming of love and relationships, which has me thinking about how marketing has leaped forward in its ability to build emotional connections with customers.

What happens when the 'market' becomes a 'customer'?

One of the insightful things that has been said to me recently came from an independent consultant working at a major FMCG client. He said: “The problem here is that we have some people who are world-class at marketing to the masses, but they haven’t got a clue about how to speak to a customer.”

3 Metrics to measure B2B content marketing ROI

Content marketing has become a key pillar for marketing departments of all sizes across the world. But how do you measure – and ultimately prove – the effectiveness of the time, money and energy spent on content marketing?

Customer Identity Management is becoming critical for enterprise companies looking to create meaningful interactions with their customers...

Michael Mitrakos

Customer identity management as a revenue driver for CMOs

Read more

Informative comments , I loved the info , Does anyone know if my assistant could get ahold of a blank 2011 IRS 8804 - Schedule A document...


Telstra unveils fresh digital content media services

Read more

So, the one thing I would say is .. the customer already has a voice, whether you wanted them to have one or not .. and they have a platf...

Paul Gilbert

Why digital strategy equals customer experience

Read more

Appliances online are doing a good job online, but they're still not giving customers a truly powerful online experience in my view. Wher...

Graham Howlett

Navigating the future of omni-channel retailing

Read more

For both businesses and marketers alike who want a digital marketing platform that supports data visualization, integrated analytics and ...


Adobe to bolster analytics capabilities of Marketing Cloud with Digital Analytix acquisition

Read more

Latest Podcast

More podcasts

Sign in