Pointing Device, Operating Method Thereof and Relative Multimedia Interactive System

Abstract

An operating method of a display device includes detecting resolution of a display module for determining a border of a user interface reference frame, setting a border of a 3D spatial reference frame utilized by a pointing device to correspond to the border detected of the user interface reference frame, moving a cursor of the user interface reference frame displayed on the display module according to a shift of the pointing device, stopping controlling a shift of the cursor according to the shift of the pointing device when the shift of the pointing device exceeds the border of the 3D spatial reference frame, and resuming controlling the shift of the cursor in the user interface reference frame of the display module when the pointing device is back within the border of the 3D spatial reference frame. An advantage of the present invention is when out of the operating range, stopping controlling the cursor to lower the affect of offset, for allowing the pointing device to be applied in different areas/directions without having the cursor displayed on the display device to incorrectly reflect shift of the pointing device.

What is claimed is: 
     
         1 . An operating method of a pointing device, comprising:
 controlling a shift of a cursor in a user interface reference frame according to a shift of the pointing device; and   stopping controlling the shift of the cursor according to the shift of the pointing device, when the shift of the pointing device exceeds a border of a 3D (three-dimensional) spatial reference frame.   
     
     
         2 . The operating method of  claim 1 , further comprising:
 setting the border of the 3D spatial reference frame to correspond to a border of the user interface reference frame, so when the cursor is at the border of the user interface reference frame, the pointing device is at the border of the 3D spatial reference frame   
     
     
         3 . The operating method of  claim 1 , further comprising:
 resuming controlling the shift of the cursor in the user interface reference frame according to the shift of the pointing device, when the pointing device is back within the border of the 3D spatial reference frame.   
     
     
         4 . The operating method of  claim 1 , further comprising:
 detecting a resolution of a display module for obtaining the border of the user interface reference frame, wherein the cursor and the user interface reference frame are displayed on the display module.   
     
     
         5 . A pointing device, comprising:
 a pointing module, for detecting and storing a shift of the pointing module;   a border module, for detecting a relation between a cursor and a user interface reference frame; and   a control module, for controlling a shift of the cursor in the user interface reference frame, according to the shift of the pointing module and the relation between the cursor and the user interface reference frame.   
     
     
         6 . The pointing device of  claim 5 , wherein the border module comprises:
 a border determining unit, for determining whether the shift of the pointing module is within a border of a 3D spatial reference frame, for accordingly generating a border determining signal and providing the border determining signal to the control module;   a border setting unit, for setting the border of the 3D spatial reference frame to correspond to a border of the user interface reference frame, so when the cursor is at the border of the user interface reference frame, the pointing module is at the border of the 3D spatial reference frame; and   a resolution detecting unit, for detecting a resolution of a display module to obtain the border of the user interface reference frame and providing the border of the user interface reference frame to the border setting unit;   wherein the cursor and the user interface reference frame are displayed on the display module.   
     
     
         7 . The pointing device of  claim 6 , wherein when the shift of the pointing module has exceeded the border of the 3D spatial reference frame, the border determining unit generates the border determining signal, and when the control module receives the border determining signal, the control module stops controlling the shift of the cursor in the user interface reference frame. 
     
     
         8 . The pointing device of  claim 5 , wherein the pointing module comprises:
 a motion sensing unit, for detecting rotating behavior, acceleration or magnetic field of the pointing module;   a processing unit, for performing an algorithm calculation to data detected by the motion sensing unit, so as to generate the shift of the pointing module; and   a data transmission unit, for transmitting the shift of the pointing module to the border module and the control module.   
     
     
         9 . A multimedia interactive system, comprising:
 a pointing device, comprising:
 a pointing module, comprising:
 a motion sensing unit, for detecting rotating behavior, acceleration or magnetic field of the pointing module; and 
 a data transmission unit, for transmitting data detected by the motion sensing unit; and 
 
   a display device, comprising:
 a processing unit, for performing an algorithm calculation to data transmitted by the data transmission unit, to generate a shift of the pointing module; 
 a border module, for detecting a relation between a cursor and a user interface reference frame; 
 a control module, for controlling a shift of the cursor in the user interface reference frame, according to the shift of the pointing module and the relation between the cursor and the user interface reference frame; and 
 a display module, for displaying the cursor and the user interface reference frame. 
   
     
     
         10 . The multimedia interactive system of  claim 9 , wherein the border module comprises:
 a border determining unit, for determining whether the shift of the pointing module is within a border of a 3D spatial reference frame, so as to accordingly generate a border determining signal and provide the border determining signal to the control module;   a border setting unit, for setting the border of the 3D spatial reference frame to correspond to a border of the user interface reference frame, so when the cursor is at the border of the user interface reference frame, the pointing module is at the border of the 3D spatial reference frame; and   a resolution detecting unit, for detecting a resolution of a display module to obtain the border of the user interface reference frame and provide the border of the user interface reference frame to the border setting unit;   
     
     
         11 . The multimedia interactive system of  claim 10 , wherein when the shift of the pointing module has exceeded the border of the 3D spatial reference frame, the border determining unit generates the border determining signal, and when the control module receives the border determining signal, the control module stops controlling the shift of the cursor in the user interface reference frame.