Patent ID: 7480379

Claim:
A mobile electronic equipment comprising: an upper cabinet having an inside surface, an outside surface opposite to said inside surface, and an end, and having a display mechanism; a hinge mechanism connected to the end of the upper cabinet; a lower cabinet having an inside surface, an outside surface opposite said inside surface, and an end connected to said hinge mechanism to provide pivotable movement of said lower cabinet relative to said upper cabinet, from a closed state at which the inside surface of the lower cabinet faces against the inside surface of the upper cabinet to an open state, and having a manipulation mechanism; means for rotatably supporting a trackball in relation to said upper cabinet, said lower cabinet and said hinge mechanism, said means having surfaces for contacting a trackball; a track ball supported by said means for rotatably supporting a trackball to have an exposed surface when said upper and lower cabinets are in the opened state and in the closed state; means for detecting the rotation angles of the track ball; means for calculating the moving direction and the amounts of movement of an image on the display mechanism based on the detected rotation angles; and means for changing the image on the display mechanism based on the calculated moving direction and amounts of movement, wherein said lower cabinet, said means for rotatably supporting a trackball and said trackball are arranged to provide, when the upper cabinet and the lower cabinet are in the open state, an exposed surface area of said trackball located above the inside surface of the lower cabinet and, concurrently, an exposed surface area of said trackball located under the outside surface of the lower cabinet.