Hand-writing input system

Abstract

A hand-writing input system includes a hand-writing input device and an image capture device. The hand-writing input device includes a penholder, a writing head and an infrared light source. The penholder includes a writing end and an opposite top end. The writing head is arranged on the writing end. The writing head actually writes on paper, and the image capture device picks up the track of the infrared light source or the track of the target of the IR light.

What is claimed is: 
     
         1 . A hand-writing input system, comprising:
 a hand-writing input device comprising:
 a penholder comprising a writing end and an opposite top end; 
 a writing head arranged on the writing end, the writing head being capable of leaving color distinguishable traces on an object; 
 an infrared light source positioned on the writing end adjacent to the writing head, the infrared light source comprising two electrodes; 
 an ink-receiving tube in communication with the writing head, the ink-receiving tube being configured for receiving writing ink; 
 a cell in the penholder, the cell being configured for providing electric energy to the infrared light source, the cell comprising an anode and a cathode at an opposite side of the anode; 
 a push switch comprising a spring member, the spring member being spaced from the cathode in a natural state thereof; and 
 two leads, one end of each lead electrically connected with a respective one of the two electrodes of the infrared light source, the other end of one of the leads electrically connected with the anode, the other end of the other lead electrically connected with the spring member; 
 wherein when the writing head is pressed on a writing paper for writing, the ink receiving tube generates a pressure to the spring member because of the pressing of the writing head, the spring member bends and then contacts the cathode of the cell due to the pressure of the ink receiving tube, thereby the infrared light source and the cell form an electric loop to enable the infrared light source to emit infrared light; when the writing head withdraws from the writing paper, the infrared light source switches to an off state; and 
   an image capture device, the image capture device being configured for picking up image continuously to record the movement track of the infrared light source.   
     
     
         2 . The hand-writing input system of  claim 1 , further comprising a panel, the image capture device being fixed relative to the panel. 
     
     
         3 . The hand-writing input system of  claim 2 , further comprising an object for recording color distinguishing traces, the object being positioned on the panel. 
     
     
         4 . The hand-writing input system of  claim 3 , wherein the object is paper. 
     
     
         5 . The hand-writing input system of  claim 2 , further comprising an installing stick fixed on edge of the panel, the installing stick being perpendicular to the panel, the image capture device being installed on the installing stick. 
     
     
         6 . The hand-writing input system of  claim 2 , wherein a viewing field of the image capture device covers the entire surface of the panel.