| 摘要 |
<p>If a VCR (2) is out of operation for longer than a predetermined time, a controller (1) produces a warning signal, a buzzer (4) produces a warning sound, and a display (5) indicates a warning message. A warning signal may be sent to another device to warn a user in a distant place. The VCR can be turned automatically into record mode by the controller (1) if a switch (8) is on.</p> |
