Fall detection device and magnetic disk drive

Details Fall detection device and magnetic disk drive Fall detection device and magnetic disk drive

2007-06-07

2009-06-23

Nguyen, Hoa T (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077020, C360S078040

Reexamination Certificate

active

07551388

ABSTRACT:
An acceleration sensor outputs a signal in accordance with acceleration. A differentiator outputs a differential signal of the output signal. A comparator inverts the state of an output when the differential signal goes beyond a threshold. A monostable multivibrator maintains the state-inverted signal of the output for a predetermined period of time. An integrator integrates the acceleration detection signal. A comparator inverts the state of an output signal when an integrated signal goes beyond a threshold. A fall determination processor outputs a signal out indicating that a fall has been detected in a situation in which, when the output of the monostable multivibrator is active, the state of the output of the comparator is inverted.

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Official communication issued in counterpart Korean Application No. 10-2007-7012781, mailed on Apr. 15, 2008.

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