Keycode/pointing device conversion adapter which converts mouse motion signals into cursor signals by activating keyboard cursor keys

Claim 1

A computer system having a display device with a cursor separately movable with either keyboard or pointing device key code signals, the system comprising: an electronic signal input terminal on the computer for normally receiving only keyboard cursor key code signals that move the cursor; a keyboard having keys thereon including cursor keys for generating key code signals when actuated; a pointing device for generating signals representing motion of the pointing device in orthogonal planes; adapter electronics coupled to the keyboard for receiving the keyboard key code signals and to the pointing device for converting only the pointing device signals into cursor code signals corresponding to the cursor key code signals generated by activating cursor keys on the keyboard; and means in the adapter electronics for alternatively coupling the converted pointing device cursor code signals and the keyboard key code signals to the computer electronic signal input terminal such that movement of the cursor on the display may be controlled from either the keyboard or the pointing device through the computer electronic signal input terminal.