Abstract: The invention provides a filter automatic adjustment apparatus and method, and a mobile telephone system, which realizes low power consumption while adjusting a characteristic frequency of a main filter having an adjustment function to a target frequency. The filter automatic adjustment apparatus includes: a phase difference detector 104 which outputs a signal having a duty ratio corresponding to a phase difference between an input signal and an output signal of a reference filter 103; a comparator 105 which converts the output signal of the phase difference detector into a rectangular wave; a counter 106 which consecutively counts a predetermined interval of the rectangular wave plural times; and a determination circuit 107 which selects a count value satisfying a predetermined criterion from the plural time count values, and the filter automatic adjustment apparatus adjusts the characteristic frequency of the main filter based on the selected count value.

Abstract: A device and a method for continuously packing tablets in which the refilling of tablets can be done without stopping the device. The tablet packing machine has a case housing a plurality of tablet feeders. The case is also provided with backup tablet feeders and backup discharge channels through which tablets discharged from the backup tablet feeders are dropped into a hopper in the tablet packing machine. The backup tablet feeders are filled with tablets beforehand. When the stock of tablets in one or some of the tablet feeders decreases to a predetermined level, the backup tablet feeders containing the same kind or kinds of tablets are activated to discharge tablets from these backup feeders. Thus, it is possible to continuously discharge tablets and thus to pack tablets continuously without interruption.