Driving circuit, electro-mechanical-acoustic transducer, and...

Details Driving circuit, electro-mechanical-acoustic transducer, and... Driving circuit, electro-mechanical-acoustic transducer, and...

2006-02-28

2006-02-28

Chin, Vivian (Department: 2644)

Electrical audio signal processing systems and devices

Including frequency control

C340S007200, C340S007600, C340S384720

Reexamination Certificate

active

07006641

ABSTRACT:
A circuit of the present invention is a driving circuit for driving a vibrator having a mechanical vibration system which resonates at a resonance frequency. The driving circuit outputs to the vibrator at least two signals of different frequencies which are included in a frequency range including the resonance frequency. The vibrator has a function of converting an electric signal into at least one of a sound and a vibration.

REFERENCES:
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patent: 5271062 (1993-12-01), Sugita et al.
patent: 5524061 (1996-06-01), Mooney et al.
patent: 6023515 (2000-02-01), McKee et al.
patent: 6208237 (2001-03-01), Saiki et al.
patent: 0 845 928 (1998-06-01), None
patent: 8275293 (1996-10-01), None

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