DISPLAY DEVICE OF MEDICAL DATA

PURPOSE: To display medical data on a time base with high precision by combining a large variation between a desired display speed and a real display speed with a nonlinear control instrument and keeping the work stability regardless of a large variation in the display speed by changing the time of a variable speed control signal in a certain rate. CONSTITUTION: A speed control detection circuit 36 connected with a display instrument 20 judges the difference between a desired display speed and a real display speed periodically. A speed control signal generating circuit 38 varies a variable speed control signal according to the difference between a desired display speed and a real display speed of the variable speed control signal, and execute a linear control to combine the variable speed control signal with the display instrument 20. Further, the circuit periodically varies the variable speed control signal at a certain rate according to the difference between a desired display speed and a real display speed of the variable speed control signal, and execute a nonlinear control to combine the variable speed control signal with the display instrument 20.