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US 2026/0095136 A1Published application
Buzzer device, buzzer driving system and method thereof
AssigneeNuvoton Technology Corporation
InventorPao-Shu Chang
Life of this patent
Estimating the term…
Abstract
A buzzer driving system includes a filter circuit and a driving circuit. The filter circuit is configured to filter an audio playback signal and output an analog playback signal. The driving circuit is electrically connected to the filter circuit and configured to output a driving voltage to the buzzer based on the analog playback signal. The driving system generates the driving voltage in an analog form to enhance the output audio quality of the buzzer.
Claims10
A buzzer driving system, comprising,
- a filter circuit configured to receive an audio playback signal, filter the audio playback signal, and output an analog playback signal;
- and
- a driving circuit electrically connected to the filter circuit and configured to output a driving voltage to the buzzer based on the analog playback signal.
A buzzer device, comprising,
- a buzzer;
- a signal processing circuit configured to perform band-pass filtering on an audio signal according to a first frequency band to generate an audio playback signal;
- a filter circuit electrically connected to the signal processing circuit and configured to filter the audio playback signal and output an analog playback signal;
- and
- a driving circuit electrically connected to the filter circuit and configured to output a driving voltage to the buzzer based on the analog playback signal,
- wherein an operating voltage of the driving circuit is higher than an operating voltage of the filter circuit.
3 more elements
A driving method for a buzzer, comprising:
- receiving an audio signal;
- performing band-pass filtering on the audio signal based on a first frequency band to generate an audio playback signal;
- filtering the audio playback signal to output an analog playback signal;
- generating a single-ended signal based on the analog playback signal;
- generating a first voltage and a second voltage based on the single-ended signal;
- and
- generating a driving voltage to the buzzer based on a voltage difference between the first voltage and the second voltage.
4 more elements
Dependencies are inferred from the claim text.