Patent ID: 6043775
Filing Date: 2000-03-28
Classification: G01S

Abstract:
In a radar scan converter system of the class wherein a conventional radar responsive to the radar sweep of a selected space generates range and azimuth data inputs to a polar coordinate system for display as radar video inputs on a conventional rectangular display screen, which is formed with display pixels ordered in a Cartesian coordinate system, the combination thereof of a direct display memory interface comprising:a) radar video logic means (22) responsive both to interface logic control inputs generated by the system and to the radar video inputs, and generating sweep video and azimuth outputs,b) a video map logic (24) responsive both to said interface logic control inputs, and to said sweep video and azimuth outputs, and generating sector boundary outputs,c) a video scan logic (26) responsive both to said interface logic control inputs and said sector boundary outputs as logic control and sector boundary inputs, and generating screen image data outputs, andd) a screen refresh logic (38) responsive to said screen image data outputs, and generating display update outputs to continuously update each pixel in the display screen so that the display or an expanded portion of the display are presented as a continuously moving radar video map to a system operator in real time.