Drive apparatus, electronic device, drive control program, and drive signal generating method

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United States of America Patent

PATENT NO 9684377
SERIAL NO

15139465

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Abstract

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A drive apparatus includes a memory to store waveform data representing a sinusoidal drive signal satisfying a frequency f1=(m/n)×q(t) (m and n: natural numbers, m≠n), to vibrate a vibration-generating device m times, where q(t) is a time characteristic of a resonance frequency of the vibration-generating device, or ((m/2)×r) times (r: natural number≠0, m and n: positive odd, m≠n), the vibration-generating device having the resonance frequency varying depending on an acceleration amplitude in a range between first and second resonance frequencies including the rated value f0; and a drive-processor to output the drive signal to the vibration-generating device. The q(t) is obtained when driving the vibration-generating device by a sinusoidal drive signal satisfying f1=(m/n)×f2, to vibrate the vibration-generating device m times if m≠n, or ((m/2)×r) times.

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Patent Owner(s)

Patent OwnerAddress
FUJITSU LIMITED1-1 KAMIKODANAKA 4-CHOME NAKAHARA-KU KAWASAKI-SHI KANAGAWA 2118588 JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Endo, Yasuhiro Ebina, JP 148 1369
Taninaka, Kiyoshi Ebina, JP 38 306
Yabuki, Akihiko Isehara, JP 33 200

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