초록 ▼

A joystick control, which is moveable in the X and Y directions, generates X- and Y-coded signals indicative of the co-ordinate position of the joystick. The joystick has a normally central position; movement of the joystick to a non-central position indicates the directional vector along which move

A joystick control, which is moveable in the X and Y directions, generates X- and Y-coded signals indicative of the co-ordinate position of the joystick. The joystick has a normally central position; movement of the joystick to a non-central position indicates the directional vector along which movement of the display cursor, such as a cursor of a video cathode-ray tube display, is to proceed. The farther the joystick is from the central position, the faster the cursor moves along the indicated directional vector.

대표청구항 ▼

A video display system comprising: (a) at least one joystick control having a shaft member which is moveable from a central position in any direction of an X-Y plane, said joystick control including means for generating X-coordinate and Y-coordinate data signals indicative of the position of said sh

A video display system comprising: (a) at least one joystick control having a shaft member which is moveable from a central position in any direction of an X-Y plane, said joystick control including means for generating X-coordinate and Y-coordinate data signals indicative of the position of said shaft member in said X-Y plane; (b) processor means coupled to said joystick control for receiving said X and Y coordinate data signals, said processor means including: (i) means for computing the directional vector between the X-Y coordinates of the shaft member, and said central position, and (ii) means responsive to the relative distance of the joystick from central position as determined from said X-Y coordinate data for selecting a corresponding speed; and (c) video signal generator means coupled to said processor means, said video signal generator means being controlled by said processor means to move a cursor across the video display along the computed vector at said selected speed.