Abstract | To make possible interactive control operations in a device such as a minidisc system which uses a recording medium on which character information can be recorded. There is provided a recording medium on which sound information and management information for managing recording and playback operations is recorded, and on which predetermined character string information is recorded as commands in a region of the management information in which character information can be recorded. And, a recording and playback device 30 is provided with command read-in means (3~10, 12, 21), which reads in commands from the disc 1, control means 11, which, according to the commands read in, executes control of operations as specified by those commands, and input-output means (16, 17, 19, 20), controlled by the control means 11, required to execute the operations indicated by the read in commands. |