Abstract: An optical signal detector for an electro-optical mouse comprising elliptical lenses for X-axis and Y-axis to longitudinally latitudinally magnify X-axis and Y-axis images taken on a grating work pad, permitting longitudinal magnification to be greater than latitudinal magnification. Receivers respectively receive magnified X-axis and Y-axis images so as to provide signals indicative of the direction and amount of movement of the optical signal detector for moving the visible cursor from position to position on a display screen.

Abstract: A pointing device for rapid moving control of a cursor on a single axis, including an axis X inhibit key and an axis Y inhibit key to respectively control a specific pin of one of the input/output ports of the associated CPU to match with software program such that when one inhibit key is pressed the amount of movement of the pointing device on one axis is cleared to allow the cursor move along the direction of the other axis.

Abstract: An optical input device which uses a reflection plane with horizontal and perpendicular lines to reflect light which is then amplified and transmitted by a lens and a reflector to a receiver with horizontal and perpendicular optical grids to receive light representing brightness and shadow and give signal for determination of distance and direction of displacement, and the signal is then processed by microprocessor to control movement of cursor or like in computer system.

Abstract: An optical input device based on a coordinate vector method in the illumination of a coordinate plane by a light source to generate a grid-shaped projection identical to the grid drawn on the coordinate plane is described. The projection is magnified and then transmitted to a light sensitive group of units which measure the brightness or darkness of the projection and generate an electrical signal based thereon which is furnished to a central processing unit. The central processing unit then evaluates the change in the signals transmitted to determine displacement and distance the light source is moved on the coordinate plane and to input into a computer for further control of the displacement of the computer cursor or similar device.