Novel Device for Inputting Handwriting Trajectory
Yasuhiro Sato*, Mitsuru ShingYouuchi**, Toshiyuki Furuta*, and Tomohiko Beppu*
*1st Office System Development Department, Office System Research and Development Center, Research and Development Group, RICOH COMPANY, LTD.
**Alpha Task Force, RICOH COMPANY, LTD. 16-1 Shinei-cho, Tsuzuki-ku Yokohama, Japan
A pen-shaped input apparatus for inputting drawings, symbols, characters into a data processing device, such as a computer, is developed. It can trace a handwritten 2-dimensional trajectory using built-in inertial sensors. As sensors, it has 3 accelerometers and 3 gyroscopes. By detecting accelerations about 3 axes and angular rates around them as 6 degrees of freedom, it can represent the 2-dimensional trajectory of the pen tip after additional calculation. Velocity correction enables precise trajectories to be represented with a small integration error. Experimental results demonstrate the feasibility of this device as a handwritten input apparatus.
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