| 摘要 |
<p>PURPOSE:To make accurate the detection of a control signal by referring to data recorded on a nonvolatile memory, identifying that the control signal is not recorded for a prescribed time, and erasing the control signal. CONSTITUTION:When the recording of the control signal is started, a flag Fr to indicate that the control signal in a nonvolatile memory SR is under recording is turned on, when the recording of the control signal is completed, the flag Fr is turned off, after the input of a power source part PS, the flag Fr in the nonvolatile memory SR is referred to, and whether or not the control signal is recorded for the prescribed time is identified. When the control signal is not recorded for the prescribed time, a system control part SC erases the signal on a magnetic tape, displays on a display part DRY that the control signal is not recorded for the prescribed time, and thus, the detection of the control signal is made accurate.</p> |
