| 摘要 |
PROBLEM TO BE SOLVED: To generate vibration for bodily sensation of a user even when an amplitude of an audio signal is strongly changed in a case that the vibrator is provided with an eccentric weight motor. SOLUTION: Vibration is generated a vibrator driving part 26 by rotating the eccentric weight motor 27. A level comparator 53 forms and outputs a rectangle signal based on the comparison between the amplitude voltage of input audio signal and a threshold voltage forms and outputs a rectangle signal, a sample hold circuit 54 outputs a signal holding the signal state of the rectangle signal only for a predetermined set time. Then, a voltage regulator 34 generates a motor driving signal for rotating or stopping of the motor 27 based on the output signal of the sample hold circuit 54. COPYRIGHT: (C)2009,JPO&INPIT
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