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公开(公告)号：US20220264238A1
公开(公告)日：2022-08-18
申请号：US17174890
申请日：2021-02-12
申请人： InvenSense, Inc.
发明人： Miroslav Svajda
摘要： A microelectromechanical system (MEMS) microphone includes a cavity to receive an acoustic signal. The acoustic signal causes movement of a diaphragm relative to one or more other surfaces, which in turn results in an electrical signal representative of the received acoustic signal. A light sensor is included within the packaging of the MEMS microphone such that an output of the light sensor is representative of a light signal received with the acoustic signal. The output of the light sensor is used to modify the electrical signal representative of the received acoustic signal in a manner that limits light interference with an acoustical output signal.
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公开(公告)号：US20220116196A1
公开(公告)日：2022-04-14
申请号：US17314850
申请日：2021-05-07
申请人： INVENSENSE, INC.
发明人： Miroslav Svajda , Dusan Vecera , Igor Mucha
摘要： Technologies are provided for adaptive control of bias settings in a digital microphone. In some embodiments, a device includes a first component that provides data indicative of a clock frequency of operation in a functional mode of a digital microphone. The clock frequency clocks one or more microphone components having switching activity. The device also can include a second component that determines, using the clock frequency, an amount of bias current to supply to at least a first microphone component of the one or more microphone components. The device can further include a memory device that retains control parameters that include at least one of a first subset of parameters defining a relationship between current and frequency and a second subset of parameters defining a quantization of the relationship. The quantization including multiple bias current levels for respective frequency intervals.
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公开(公告)号：US20220417685A1
公开(公告)日：2022-12-29
申请号：US17898352
申请日：2022-08-29
申请人： InvenSense, Inc.
发明人： Miroslav Svajda
摘要： A microelectromechanical system (MEMS) microphone includes a cavity to receive an acoustic signal. The acoustic signal causes movement of a diaphragm relative to one or more other surfaces, which in turn results in an electrical signal representative of the received acoustic signal. A light sensor is included within the packaging of the MEMS microphone such that an output of the light sensor is representative of a light signal received with the acoustic signal. The output of the light sensor is used to modify the electrical signal representative of the received acoustic signal in a manner that limits light interference with an acoustical output signal.
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公开(公告)号：US11463830B2
公开(公告)日：2022-10-04
申请号：US17174890
申请日：2021-02-12
申请人： InvenSense, Inc.
发明人： Miroslav Svajda
摘要： A microelectromechanical system (MEMS) microphone includes a cavity to receive an acoustic signal. The acoustic signal causes movement of a diaphragm relative to one or more other surfaces, which in turn results in an electrical signal representative of the received acoustic signal. A light sensor is included within the packaging of the MEMS microphone such that an output of the light sensor is representative of a light signal received with the acoustic signal. The output of the light sensor is used to modify the electrical signal representative of the received acoustic signal in a manner that limits light interference with an acoustical output signal.
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