Motion Sensing Device and Motion Sensing System thereof

Abstract

A motion sensing device, for a motion sensing system having a light emitting device for generating light of a first frequency range, includes a motion sensing area comprising a sensor array, for sensing light of the first frequency range to generate two-dimensional motion information of a first axis and a second axis; and a distance sensing area, configured at an outside of the motion sensing area, for sensing light of the first frequency range to generate distance information of a third axis.

What is claimed is: 
     
         1 . A motion sensing device for a motion sensing system having a light emitting device for generating light of a first frequency range, the motion sensing device comprising:
 a motion sensing area comprising a sensor array, for sensing light of the first frequency range to generate two-dimensional motion information of a first axis and a second axis; and   a distance sensing area, configured at an outside of the motion sensing area, for sensing light of the first frequency range to generate distance information of a third axis.   
     
     
         2 . The motion sensing device of  claim 1 , wherein the distance sensing area comprises:
 a first distance sensing unit, configured at a first side of the motion sensing area for sensing the light of the first frequency range and outputting a first current as the distance information;   a second distance sensing unit, configured at a second side of the motion sensing area for sensing the light of the first frequency range and outputting a second current as the distance information;   a third distance sensing unit, configured at a third side of the motion sensing area for sensing the light of the first frequency range and outputting a third current as the distance information; and   a fourth distance sensing unit, configured at a fourth side of the motion sensing area for sensing the light of the first frequency range and outputting a fourth current as the distance information.   
     
     
         3 . The motion sensing device of  claim 1 , wherein the first frequency range is a frequency range of infrared. 
     
     
         4 . The motion sensing device of  claim 1  further comprising:
 a first dummy area, configured between the motion sensing area and the distance sensing area; and 
 a second dummy area, configured at an outside of the distance sensing area. 
 
     
     
         5 . The motion sensing device of  claim 1  further comprising:
 an environment light sensing area, for sensing light of a second frequency range to generate environment light information and control an intensity of the light generated by the light emitting device according to the environment light information. 
 
     
     
         6 . The motion sensing device of  claim 5 , wherein the environment light sensing area is configured between the motion sensing area and the distance sensing area. 
     
     
         7 . The motion sensing device of  claim 5 , wherein the environment light sensing area is configured at an outside of the distance sensing area. 
     
     
         8 . The motion sensing device of  claim 5 , wherein the environment light sensing area comprises:
 a first environment light sensing unit, configured at a first side of the motion sensing area for sensing the light of the second frequency range and outputting a first current as the environment light information;   a second environment light sensing unit, configured at a second side of the motion sensing area for sensing the light of the second frequency range and outputting a second current as the environment light information;   a third environment light sensing unit, configured at a third side of the motion sensing area for sensing the light of the second frequency range and outputting a third current as the environment light information; and   a fourth environment light sensing unit, configured at a fourth side of the motion sensing area for sensing the light of the second frequency range and outputting a fourth current as the environment light information.   
     
     
         9 . The motion sensing device of  claim 5 , wherein the second frequency range is a frequency range of visible light. 
     
     
         10 . A motion sensing system, comprising:
 a light emitting device, for generating light of a first frequency range;   a motion sensing device, comprising:
 a motion sensing area comprising a sensor array, for sensing light of the first frequency range to generate two-dimensional motion information of a first axis and a second axis; and 
 a distance sensing area, configured at an outside of the motion sensing area, for sensing light of the first frequency range to generate distance information of a third axis; and 
   a computing device, for determining a motion trace according to the two-dimensional motion information and the distance information.   
     
     
         11 . The motion sensing system of  claim 10 , wherein the distance sensing area comprises:
 a first distance sensing unit, configured at a first side of the motion sensing area for sensing the light of the first frequency range and outputting a first current as the distance information;   a second distance sensing unit, configured at a second side of the motion sensing area for sensing the light of the first frequency range and outputting a second current as the distance information;   a third distance sensing unit, configured at a third side of the motion sensing area for sensing the light of the first frequency range and outputting a third current as the distance information; and   a fourth distance sensing unit, configured at a fourth side of the motion sensing area for sensing the light of the first frequency range and outputting a fourth current as the distance information.   
     
     
         12 . The motion sensing system of  claim 10 , wherein the first frequency range is a frequency range of infrared. 
     
     
         13 . The motion sensing system of  claim 10 , wherein the motion sensing device further comprises:
 a first dummy area, configured between the motion sensing area and the distance sensing area; and   a second dummy area, configured at an outside of the distance sensing area.   
     
     
         14 . The motion sensing system of  claim 10 , the motion sensing device further comprising:
 an environment light sensing area, for sensing light of a second frequency range to generate environment light information and control an intensity of the light generated by the light emitting device according to the environment light information.   
     
     
         15 . The motion sensing system of  claim 14 , wherein the environment light sensing area is configured between the motion sensing area and the distance sensing area. 
     
     
         16 . The motion sensing system of  claim 14 , wherein the environment light sensing area is configured at an outside of the distance sensing area. 
     
     
         17 . The motion sensing system of  claim 14 , wherein the environment light sensing area comprises:
 a first environment light sensing unit, configured at a first side of the motion sensing area for sensing the light of the second frequency range and outputting a first current as the environment light information;   a second environment light sensing unit, configured at a second side of the motion sensing area for sensing the light of the second frequency range and outputting a second current as the environment light information;   a third environment light sensing unit, configured at a third side of the motion sensing area for sensing the light of the second frequency range and outputting a third current as the environment light information; and   a fourth environment light sensing unit, configured at a fourth side of the motion sensing area for sensing the light of the second frequency range and outputting a fourth current as the environment light information.   
     
     
         18 . The motion sensing system of  claim 14 , wherein the second frequency range is a frequency range of visible light.