The present invention relates to cursor control systems and methods therefore for providing coarse and fine control in positioning cursors used on display screens of display units for
information processing devices. In particular, the cursor control systems and related methods allow the user to move the cursor to a vicinity of a target position at a
fast speed through an initial coarse maneuver, and then to precisely position the cursor in the target position at a slow or manual speed through a subsequent fine maneuver. An exemplary cursor
control system typically includes a body, at least one fine controller, and at least one coarse controller. In general, the fine controller couples with the body, receives a first input
signal from the user, and moves the cursor at the slow or manual speed as determined by the first input
signal, while the coarse controller couples with the body, receives a second input
signal from the user independently of the first input signal, and moves the cursor at the
fast speed. Another exemplary cursor
control system typically includes a cursor controller and an adjustor. In general, the cursor controller receive a first input signal from the user and generate an original output signal in response to the first input signal, while the adjustor has at least two settings, receives the original output signal from the cursor controller, receives a second input signal from the user independently of the first input signal to select one of the settings, processes the original output signal based on one of the settings selected by the user, and generates a final output signal based on the original output signal and the setting selected by the user. The
information processing device receives the final output signal from the adjustor and moves the cursor on the display screen at the
fast speed or at the slow or manual speed based on the final output signal.