Patent ID: 7194396

Claim:
A simulation device for simulating an operation of a machine which operates in accordance with an operation program or an operation command, said simulation device comprising: receiving means for receiving lapsing time information of the operation of the machine and positional information of the machine associated with the lapsing time information; simulation display means for displaying an image of a model of the machine on a display device by animation to perform simulation of the operation of the machine based on the received lapsing time information and positional information; capturing means for capturing images of the model of the machine obtained by said simulation display means in the simulation and reduceing the captured images of the model of the machine; storing means for storing the reduced images to be associated with the lapsing time information and the positional information to the time of capturing of the respective images of the model of the machine; display control means for displaying the reduced images on the display device in the order of lapsing time based on the stored lapsing time information; replay means for replaying a part of the simulation of the operation of the machine designated by at least one reduced image selected by an operator from the reduced images displayed on the display device based on the lapsing time information of the operation of the machine and the positional information of the machine associated with the reduced image selected by the operator; and replay control means for suspending the replay of the simulation to allow altering of a replay speed of the replay of the simulation and restarting the replay of the simulation.