Cursor controlling device

摘要

A cursor controlling device for controlling the movement and positioning of a cursor on a computer display comprises a case (1) consisting of an upper part (11) and a lower part (12) with a cavity (13) formed therebetween, an information carrier set (2) within the case and having at least two information carriers (21, 22) for recording information signals used to identify "0" and "1" so as to match the two dimensional movement of the X axis and Y axis, a reading set (3) installed within the case for coupling with the information carriers to derive the signals of "0" and "1" and a sliding bar set (4) having at least X axis and Y axis sensor sets for driving said information carriers (21, 22) respectively. The information carriers are installed within the cavity (13) of the case (1) and each of the information carriers has a driving portion (211, 221) which is arranged to be driven by a respective sliding bar set (41, 42) whereby the assembled volume of said cursor controlling device may be reduced to a minimum value so that the cursor controlling device may be moved with a very small area to control the movement of a cursor moving the display. The sliding bar set and the information carrier set may be rotated within a suitable angle to fit operation by the human hand. The cursor controlling device according to the invention can have two operating modes wherein, in the first operating mode, movement of a finger controllable element is detected, and then the cursor is moved correspondingly while, in the second operating mode, a virtual pointer area is installed so that as the finger controllable element is moved into this area, it is automatically converted into the operation of a specified instruction to perform a bidirectional movement containing at least a scrolling operation, or it may be separated specially to increase a function in which the cursor may arrive at the boundary of the display. Thus, the moving area of said control device may be designed to be within an area of about 1.27 cm and it may be mapped into the whole display by absolute coordinates.