| 摘要 |
PURPOSE:To attain the stable detection without using a complicated storage circuit, by generating a reset pulse in both cases when the power is supplied and the momentary interruption of the power supply is restored, and processing it at a pattern generator. CONSTITUTION:When power supply is applied to the titled device, the power supply is given to a time constant circuit 1, a transistor(TR) switch 2 and a reset circuit 5. In this case, the time constant circuit 1 sets the TR2 on, then the power supply is given to an IDROM(pattern generator) 3 also through the TR2. When the power to the device is stopped and restored in a very short time, the reset circuit 5 is operative and gives a reset signal to a microprocessor 4, but the TR2 remains off. When the reset is released, the microprocessor 4 discriminates that it is in the state that the device is restored from the momentary interruption of the power supply. |
