| 摘要 |
<p>PURPOSE:To enable to record, reproduce and interrupt their operation only by loading and unloading a cassette, by controlling the start and stop of a tape run corresponding to the detection of the opening and closing of the cassette lid of a cassette loading part and the loading and unloading of the cassette. CONSTITUTION:As a cassette is pushed into the loading part, the cassette lid is opened to connect switch 4 to contact (b) by switching, and further switch 7 detecting cassette 2 being loaded completely is connected to contact (e), so that both inputs to NAND gate 8 will be at a high level. Consequently, the output of gate 8 is inverted to a low level to trigger control part 9, and the signal that corresponds to the setting of the recording or playback mode of mode setting part 11 is applied to driving part 12 to hold the constant-speed run state of the tape, so that the recording or playback state will be set. Similarly, as the cassette is unloaded from the loading part, the tape is stopped via switches 4 and 7, and only the loading and unloading of the cassette can control the recording, playback and their interruption easily and securely without button operation.</p> |
