| 摘要 |
<p>PURPOSE:To make tape loading, etc., sure by detecting in a cassette VTR, etc., whether the tape loading or unloading state is good or not to repeat the loading and unloading operations. CONSTITUTION:By closing loading switch 10, FF12 is set through pulse generator 11, and motor 16 is driven to perform the loading of the tape onto a rotary drum, etc. When this loading is not performed normally, switch 15 which detects loading is not opened after a prescribed time, and pulse generator 19 is driven by the AND output of AND gate 18, and FF12 is reset. Therefore, unloading is performed by motor 21 through unloading detection switch 20, and loading and unloading are repeated. The number of repeat times is counted by register 25; and when this counted value reaches a prescribed value, the loading operation is stopped automatically by solenoid 28 and display, thereby performing a sure tape loading.</p> |
