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US 9,439,001 B2Granted
Electronic device and sound capturing method
AssigneesBeijing Lenovo Software Ltd., Lenovo (Beijing) Limited
InventorsJunfeng Liu, Yunfeng Pan, Fei Wu
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Abstract
An electronic device and a sound capturing method are described. The electronic device includes at least one first bone conducting unit, which is operable to detect vibration produced by an object in contact with the first bone conducting unit, and to generate an alternating current signal based on the detected vibration to capture a sound produced by the vibration; and a processing unit, which is operable to receive the alternating current signal and to perform an audio processing on the alternating current signal.
Claims18
An electronic device, comprising:
- at least one first bone conducting unit, which is operable to detect vibration produced by an object in contact with the first bone conducting unit, and to generate an alternating current signal based on the detected vibration to capture a sound produced by the vibration;
- and
- a processing unit, which is operable to receive the alternating current signal and to perform an audio processing on the alternating current signal,
- wherein each of the first bone conducting units is formed in a first form or a second form;
- in the first form, each of the first bone conducting unit comprises:
- a first metal substrate which is arranged in the electronic device;
- and
- a first piezoelectric sheet which is arranged on a first surface of the electronic device;
- the first piezoelectric sheet is polarized by the first metal substrate in advance so that a saturated electric field is formed inside of the first piezoelectric sheet;
- the first piezoelectric sheet is deformed when the object in contact with the first piezoelectric sheet vibrates and the alternating current signal is generated by the electric field inside of the first piezoelectric sheet;
- in the second form, each of the first bone conducting unit comprises:
- a capacitive pressure detecting module including:
- a metal thin-film electrode which is arranged on a first surface of the electronic device, and is operable to be deformed based on the vibration produced by the object;
- and
- a fixed electrode which is arranged in the electronic device, and is connected to a voltage supply module;
- the voltage supply module is operable to supply power to the capacitive pressure detecting module so that there is a predetermined voltage difference between the metal thin-film electrode and the fixed electrode.
13 more elements
A sound capturing method applied to an electronic device including at least one first bone conducting unit, the method comprising:
- detecting vibration produced by an object in contact with the first bone conducting unit by the at least one first bone conducting unit;
- generating an alternating current signal based on the detected vibration to capture a sound produced by the vibration;
- and
- performing an audio processing on the alternating current signal,
- wherein each of the first bone conducting units is formed in a first form or a second form;
- in the first form, each of the first bone conducting unit comprises:
- a first metal substrate arranged in the electronic device;
- and
- a first piezoelectric sheet arranged on a first surface of the electronic device:
- the first piezoelectric sheet is polarized by the first metal substrate in advance so a saturated electric field is formed inside of the first piezoelectric sheet;
- the first piezoelectric sheet is deformed when the object in contact with the first piezoelectric sheet vibrates and the alternating current signal is generated by the electric field inside of the first piezoelectric sheet;
- in the second form, each of the first bone conducting unit comprises:
- a capacitive pressure detecting module including:
- a metal thin-film electrode arranged on a first surface of the electronic device, and is operable to be deformed based on the vibration produced by the object;
- and
- a fixed electrode arranged in the electronic device, and is connected to a voltage supply module;
- the voltage supply module is operable to supply power to the capacitive pressure detecting module so that there is a predetermined voltage difference between the metal thin-film electrode and the fixed electrode.
14 more elements
Dependencies are inferred from the claim text.