Abstract
A prototype touch-sensitive tablet is presented. The tablet's main innovation is that it is capable of sensing more than one point of contact at a time. In addition to being able to provide position coordinates, the tablet also gives a measure of degree of contact, independently for each point of contact. In order to enable multi-touch sensing, the tablet surface is divided into a grid of discrete points. The points are scanned using a recursive area subdivision algorithm. In order to minimize the resolution lost due to the discrete nature of the grid, a novel interpolation scheme has been developed. Finally, the paper briefly discusses how multi-touch sensing, interpolation, and degree of contact sensing can be combined to expand our vocabulary in human-computer interaction.
- Brown, E., Buxton, W. & Murtagh, K. (1985). Windows on Tablets as a Means of Achieving Virtual Inpul Devices. Computer Systerns Research Institute, University of Toronto.Google Scholar
- Buxton, W. (1982). Lexlcal and Pragmatic Considerations of Input Structures, Computer Graphics, 17 (1), 31- 37. Google ScholarDigital Library
- Buxton, W., Hill, R. & Rowley, P. (1985). Issues and Techniques in Touch-Sensitive Tablet Input, Computer Systems Research Institute, University of Toronto.Google Scholar
- Hillls, W.D. (1982), A High Resolution Imaging Touch Sensor, International Journal of Robotics Research, 1 (2), 33 - 44.Google ScholarCross Ref
- Hurst, Q. (1974). Electrographlc Sensor for Determining Planar Coordinates, United State Patent 3,798,370, March 19, 1974, Elographics, Incorporated.Google Scholar
- JSR (1981), Pressure-Sensitive Conductive Rubber Data Sheet, Japan Synthetic Rubber Co., New Product Development Department, JSR Building, 2-11-24 Tfukljl, Chtx)-Ku, Tokyo 104, Japan.Google Scholar
- Lee, S. (1984), A Fast Multiple-Touch-Sensitive Input Device, M.A.Sc. Thesis, Department of Electrical Engineering, University of Toronto.Google Scholar
- Metha, N. (1982), A Flexible Machine Interface, M.A.Sc. Thesds, Department of Electrical Engineering, University of Toronto.Google Scholar
- Sasaki, L., Fedorkow, G., Buxton, W., Retterath, C., & Smith, K.C. (1981). A Touch-Sensitive Input Device. Proceedings of the Fifth International Conference on Computer Music, North Texas State University, Denton, Texas, November, 1981.Google Scholar
- TASA (1980), Model: x-y 3600 and x-y controller, Model: FR-105 Data Sheet, Touch Activated Switch Arrays Inc., 1270 Lawrence Station Road., Suite G., Sunnyvale, CA 94089.Google Scholar
- TSD (1982), Touch Screen Digitizer Data Sheet, TSD Display Products Inc., 35 Orville Drive, Bohemia, NY 11716.Google Scholar
Index Terms
- A multi-touch three dimensional touch-sensitive tablet
Recommendations
A multi-touch three dimensional touch-sensitive tablet
CHI '85: Proceedings of the SIGCHI Conference on Human Factors in Computing SystemsA prototype touch-sensitive tablet is presented. The tablet's main innovation is that it is capable of sensing more than one point of contact at a time. In addition to being able to provide position coordinates, the tablet also gives a measure of degree ...
To touch or not to touch?: comparing 2D touch and 3D mid-air interaction on stereoscopic tabletop surfaces
SUI '13: Proceedings of the 1st symposium on Spatial user interactionRecent developments in touch and display technologies have laid the groundwork to combine touch-sensitive display systems with stereoscopic three-dimensional (3D) display. Although this combination provides a compelling user experience, interaction with ...
Multi-touch interaction for tasking robots
HRI '10: Proceedings of the 5th ACM/IEEE international conference on Human-robot interactionThe objective is to develop a mobile human-robot interface that is optimized for multi-touch input. Our existing interface was designed for mouse and keyboard input and was later adopted for voice and touch interaction. A new multi-touch interface ...
Comments