The 4th ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia
Conference 12-15 December • Exhibition 13-15 December • Hong Kong Convention & Exhibition Centre

Emerging Technologies

Paranga: A Book-Shaped Device with Tactile Feedback

A flipbook features page-turning action that is familiar to us. It not only gives us funny visual feedback - like how a written character looks as it moves - but also tactile information when pieces of paper touch a user’s thumb page by page. In recent e-reader devices such as the iPad, we can also see page-flipping animations when users turn pages. But e-books generally do not provide any tactile feelings of paper in reading a book. We developed a novel book-shaped device "Paranga" to give users the tactile sensations of thumbing real pages, even when they read an e-book on Paranga. Paranga is a device that includes two facing parts like a real book. The right side is for controlling flipped pages, and the left side is for displaying contents. In the controlling part, we implemented a mechanism to realize flipping pages. This part is made of a sheet of rubber with a bend sensor, a roller attached to sheets of paper and a rotary encoder. In response to an increase of the degree of bending, the rotation rate of the roller gets faster. It gives the tactile sensations of flipping pages. It detects the degree of rotating speed variation caused by the thumb’s pressure, and the system controls the rotating speed. We implemented two applications. The first one is an application that presents page-turning animation at the same time as tactile feedback. This improves the intuitive operation of flipping a lot of pages in existing e-reader devices. The second one is what augments flipbook experiences; the story of the flipbook changes depending on the speed of pages being flipped, while the normal flipbook has a fixed story.

Hiroyuki Kidokoro, Osaka University
Kazuyuki Fujita, Osaka University
Masanori Ohwaki, Osaka University
Khoa Doba, Worcester Polytechnic Institute
Christopher Chung, Worcester Polytechnic Institute
Yuichi Itoh, Osaka University