Patent ID: 8103964

Claim:
A parameter editor apparatus, comprising: a first display device that displays a screen of a plurality of blocks; a touch pad having a second display device to display a pop-up screen and an accepting device that accepts an operation on the touch pad by a user; a knob that accepts an instruction to adjust values of parameters; a controller that selectively responds to different user operations in that, when the touch pad accepts a single click operation on one of the blocks in the screen displayed on the first display device, the controller selects a parameter corresponding to the one block as a parameter to be adjusted according to the instruction accepted by the knob, and when the touch pad accepts a double click operation on one of the blocks in the screen displayed on the first display device, the controller controls the touch pad to display on the second display device a pop-up screen corresponding to the one block; and an editor that, during the state when the pop-up screen is displayed on the second display device, changes a value of a parameter displayed on the pop-up screen according to the operation on the touch pad, wherein the screen of the plurality of blocks displayed on the first display device is maintained independently of any operation on the touch pad during the state when the pop-up screen is displayed on the second display device.