PURPOSE: To easily and accurately make an editing possible from a specified editing point.

CONSTITUTION: The command supplied from the editing controller via an AV bus is inputted to an operation command deciding part 23 via an AV bus controlling part 28 and a command analyzing part 30. A mechanism part 25 is controlled by the operation command deciding part 23 via a mechanism controlling part 24 so as to execute an operation corresponding to this command. Thus, the operation of recording or reproducing stated by the mechanism part 25. The delayed period of time to the real execution of an operation corresponding to an instruction by the mechanism part 25 is recorded on a delayed information memory 29. This delayed period of time is read by the editing controller and a command for instructing the start of the operation is generated considering this delayed period of time.