To provide an electronic pen comprising an acceleration sensor and a camera, in which moving information of the pen on a paper is calculated by the acceleration sensor when the electronic pen leaves the paper and from a plurality of images taken by the camera when the pen is moving on the paper, and a program therefor.
This electronic pen comprises a three-axial acceleration sensor, the function of acquiring trace information showing the moving trace of the electronic pan based on the acceleration detected by the sensor, an ink jet for printing the content drawn by a writer to a paper, a camera for taking the image of the printed content, and the function of acquiring trace information showing the printed trace based on a plurality of images taken by the camera.
NAGASAKA AKIHIKO
MATSUOKA TAKESHI
Yoshiyuki Osuga