Audio amplifier apparatus to drive a panel to produce both an audio signal and haptic feedback
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United States of America Patent
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Issued Date -
Jun 10, 2010
app pub date -
Dec 5, 2008
filing date -
Dec 5, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A control panel apparatus includes a control panel that is vibrated to generate sound and/or haptic feedback. The control panel apparatus is configured to receive tactile input, such as a touchscreen, and to provide tactile feedback so as to function like a haptic panel, in response to a haptic signal component of a driving signal. The control panel is also configured to function as an audio speaker in response to an audio signal component of the driving signal. The haptic signal has a wider bandwidth, in the range of approximately 100-400 Hz, and the audio signal has a narrower bandwidth, in the range of approximately 20 Hz-20 kHz. The driving signal is configured to include either or both of the haptic signal and the audio signal. One or more drive elements are coupled to a control panel, each drive element driven by a driving signal. Each drive element converts the electrical driving signal to mechanical movement, thereby vibrating the control panel. In the case of multiple drive elements, each drive element is coupled to a different portion of the control panel.
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