Graphic construction display generator

Claim 1

AN ELECTRONIC SYSTEM FOR GENERATING A SIMULATED THREE-DIMENSIONAL DISPLAY ON A TWO-DIMENSIONAL UTILIZATION DEVICE TO PRODUCE A PERSPECTIVE VIEW ILLUSTRATING THE POSTURE OF AN OBSERVER WITH RESPECT TO A REFERENCE SURFACE COMPRISING: MEANS FOR PRODUCING A DISPLAY OF RANDOMLY-SPACED DISPLAY MEMBERS PROVIDING AN ILLUSION OF THE PERSPECTIVE PICTURE OF SAID REFERENCE SURFACE MOVING WITH RESPECT TO SAID OBSERVER; SAID MEANS COMPRISING MEANS FOR GENERATING A SET OF X AND Y DEFLECTION VOLTAGES RESPONSIVE TO POSTURAL DATA AND PRODUCING A FIRST AND SECOND PLURALITY OF LINES, THE LINES IN EACH SAID PLURALITY FORMING A PERSPECTIVE REPRESENTATION OF RANDOMLY-SPACED COPLANAR PARALLEL LINES HAVING A COMMON VANISHING POINT, WITH THE LINES IN SAID FIRST PLURALITY APPEARING ORTHOGONAL TO THE LINES IN SAID SECOND PLURALITY AND COPLANAR THEREWITH; MEANS FOR APPLYING SAID SET OF X AND Y DEFLECTION VOLTAGES TO A DISPLAY DEVICE SUCH THAT SAID RESPECTIVE PLURALITIES OF LINES ARE DISPLAYED; ELECTRONIC MEANS RESPONSIVE TO SAID DISPLAY FOR PROVIDING A VIDEO SIGNAL COMBINING SAID FIRST AND SECOND PLURALITY OF LINES IN PERSPECTIVE REPRESENTATION OF SAID REFERENCE SURFACE; AND MEANS FOR APPLYING SAID VIDEO SIGNAL TO SAID UTILIZATION DEVICE.