| 摘要 |
PURPOSE: An apparatus and a method for canceling operations and replaying operations are provided to store control data before being adjusted and the current control data in a memory, and read the control data stored according to selection of functions of canceling and replaying operations, thereby improving the convenience of users. CONSTITUTION: A control unit judges whether a user adjusts control data at will(200). If so, the control unit stores control data before being adjusted and the current control data in a memory(201). The control unit judges whether the user selects an undo function for canceling operations(202). If so, the control unit reads the control data before being adjusted and executes the corresponding control function(203). If the user selects a redo function for replaying operations, the control unit judges whether the undo function is sensed previously(204). If the redo function is selected after executing the undo function, the control unit reads the current control data from the memory and the corresponding control function(205). |
