Patent ID: 6781576
Filing Date: 2004-08-24
Classification: G01L,G06F

Abstract:
A wireless input apparatus comprising:a pointing device which detects three-dimensional components of an externally applied pressure; a signal process unit which defines a moving direction of a pointer based on an x-axis component and a y-axis component of the pressure, and defects whether the pointing device is pressed or not based on a z-axis component of the pressure; a pointer control unit which moves a position of the pointer based on the defined moving direction; a process execution unit which generates a predefined command data when the pointing device is pressed; and a wireless communication unit which transmits the command data to an external device using a wireless communication means; wherein said pointing device includes: an operational part to which a three-dimensional external pressure is applied; and a sheet-like pressure-sensitive resistance member which detects the three-dimensional applied pressure, wherein said sheet-like pressure-sensitive resistance member has a mesh pattern of a plurality of electrodes on its surface each of which detects any one of the x-axis, the y-axis, and the z-axis components, and said signal process unit converts analog signals obtained from the electrodes in the mesh regions to digital signals in a time divisional manner; wherein said signal process unit performs timing control to form an output path for each of the electrodes of a signal from an i-th row of the electrode, and further performs timing control to select a j-th column of the electrode and to obtain an output value of the signal from the electrode in the (i,j) mesh region, and thereby detects a two-dimensional distribution of the output signals from the mesh pattern of the electrodes.