PURPOSE: To prevent omission of a signal at the time of changeover in a recording or a reproducing operation.

CONSTITUTION: The systems consist of a means to make a recording medium 1 start the record (reproduction) of the signal by a preceding recording/ reproducing device 3, a means to detect the recording (reproducing) finish time of the recording medium 1, and a means to make a recording medium 2 start the record (reproduction of the recording medium) by a succeeding recording/ reproducing device 4 from the time (Tp) before the recording (reproducing) finish time of the recording medium 1 recorded (reproduced) by the preceding recording/reproducing device. The same signals are recorded (the same signals are reproduced) for the fixed time (Tp) on the rear part of the recording medium 1 of the preceding side and on the front part of the recording medium 2 of the succeeding side.