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公开(公告)号：US20130202142A1
公开(公告)日：2013-08-08
申请号：US13759368
申请日：2013-02-05
Applicant: GENTEX CORPORATION
Inventor： Robert R. Turnbull , Michael A. Bryson
IPC: H04R3/00
CPC classification number: H04R3/00 , G10K11/16 , H04R2410/00 , H04R2499/13
Abstract: A low power microphone circuit for a vehicle is provided that includes: at least one microphone transducer; a digital signal processor for receiving output signals from the at least one microphone transducer and for generating a digitally processed audio signal; an output amplifier for amplifying the audio signal from the digital signal processor and modulating an input voltage with the audio signal; and a DC power supply for supplying power to the digital signal processor. The output amplifier and the DC power supply may be electrically coupled in series. The DC power supply and the output amplifier may be powered by the input current, where the input current is no greater than about 6 mA.
Abstract translation: 提供了一种用于车辆的低功率麦克风电路，其包括：至少一个麦克风换能器; 数字信号处理器，用于从所述至少一个麦克风换能器接收输出信号，并用于产生经数字处理的音频信号; 输出放大器，用于放大来自数字信号处理器的音频信号，并用音频信号调制输入电压; 以及用于向数字信号处理器供电的DC电源。 输出放大器和直流电源可以串联电耦合。 直流电源和输出放大器可以由输入电流供电，其中输入电流不大于约6mA。
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公开(公告)号：US11479185B2
公开(公告)日：2022-10-25
申请号：US16778606
申请日：2020-01-31
Applicant: Gentex Corporation
Inventor： Keith W. Bigoness , Michael A. Bryson , Joshua D. Lintz
Abstract: An imaging assembly for use in a vehicle is disclosed. The imaging assembly may include an image sensor configured to capture image data and an electro-optic element configured to selectively control a range of wavelengths corresponding to light in a near infrared (NIR) range of light entering the image sensor. The electro-optic element may include a first portion configured to absorb the range of wavelengths entering the image sensor and a second portion configured to absorb the range of wavelengths entering the image sensor in a first state and to transmit the range of wavelengths entering the image sensor in a second state. The second portion may be electrically isolated from the first portion. A controller may be in communication with the image sensor and the electro-optic element. The controller may be operable to switch the second portion between the first state and the second state.
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公开(公告)号：US20200247331A1
公开(公告)日：2020-08-06
申请号：US16778606
申请日：2020-01-31
Applicant: Gentex Corporation
Inventor： Keith W. Bigoness , Michael A. Bryson , Joshua D. Lintz
Abstract: An imaging assembly for use in a vehicle is disclosed. The imaging assembly may include an image sensor configured to capture image data and an electro-optic element configured to selectively control a range of wavelengths corresponding to light in a near infrared (NIR) range of light entering the image sensor. The electro-optic element may include a first portion configured to absorb the range of wavelengths entering the image sensor and a second portion configured to absorb the range of wavelengths entering the image sensor in a first state and to transmit the range of wavelengths entering the image sensor in a second state. The second portion may be electrically isolated from the first portion. A controller may be in communication with the image sensor and the electro-optic element. The controller may be operable to switch the second portion between the first state and the second state.
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