| 摘要 |
The travelling speed of a magnetic tape is controlled without considering a detection error caused by the slackening of a magnetic tape or the like. A microcomputer 10, immediately after starting a fast-feeding operation, starts a running rotation of feeding and winding reels 44, 45 (step S205), calculates an N value based on reel pulses and sets an acceleration target (step S210, S215) and simultaneously reads the N value immediately before the previous stop of the rotation from RAM and compares the read N value with the current N value (step S225, S230), prohibits the acceleration of the feeding and winding reels 44, 45 after confirming that the error does not fall within 25% (step S235) whereby when the videotape is rotated to the leader or the trailer, the videotape is prevented from being applied with an excessive load so that damages on the videotape can be reduced.
|
