PURPOSE: To prevent overlap and to simplify a reserving method by inputting and setting a desired channel selection and a recording time, displaying them with a bar graph, and enabling discriminating a overlap region.

CONSTITUTION: Channel numbers and time scales are displayed in the longitudinal and lateral direction, while reserved conditions are displayed with bar graphs G1-G3. Also, overlap time regions of respective channels GO1-GO3 are made another display state in which they can be discriminated from non-overlap time regions GP1-GP3 in the graphs G1-G3. In this case, when overlap reservation is made, overlap section is displayed, and when setting of start time and changing to correct are desired, reserved information can be corrected with a cursor and key operation. Thereby, reservation is decided, can be easily realized on a screen and a monitor, and overlap can be prevented.