Patent ID: 6947029
Filing Date: 2005-09-20
Classification: G06F,G06K,G07C

Abstract:
1. A handwritten data input apparatus which acquires handwritten data written in midair by means of a user moving a pen device in midair, the apparatus comprising: camera means for acquiring motion picture data pertaining to a pen device moved by the user; and coordinate computation means which determines time-series data pertaining to coordinates of a pen tip on a screen of the motion picture data, on the basis of motion picture data pertaining to the pen device acquired by the camera means, wherein the coordinate computation means computes coordinates of the pen device on the screen from a start time in which the pen device has started moving on the screen from a stationary state longer than a predetermined first period until a stop time in which the pen device stops moving as a result of having entered a stationary state longer than a predetermined second period.