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    • 22. 发明申请
    • TRIANGULAR MICROPHONE ASSEMBLY FOR USE IN A VEHICLE ACCESSORY
    • 三角形麦克风组件用于车辆附件
    • WO2008101198A2
    • 2008-08-21
    • PCT/US2008/054138
    • 2008-02-15
    • GENTEX CORPORATIONTURNBULL, Robert, R.WATSON, Alan, R.
    • TURNBULL, Robert, R.WATSON, Alan, R.
    • B60R1/04B60R1/12B60R11/02H04R1/40H04R3/00
    • B60R1/12B60R11/0247B60R2001/1223B60R2011/0033H04R3/005H04R2201/401H04R2430/23H04R2499/13
    • An interior rearview mirror assembly (101) for a vehicle includes a mirror housing (106) adapted for attachment to the interior of the vehicle, the mirror housing (106) including a back surface (107) generally facing the front of the vehicle and an opening generally facing the rear of the vehicle. A mirror (108) is disposed in the opening of the mirror housing (106) where a first microphone assembly (108a), second microphone assembly (108b), and third microphones assembly (108c) are positioned in the mirror housing (106) along its rear, bottom, or top surface. Each of the three microphone assemblies (108a, 108b 108c) are arranged in a substantially triangular configuration for reducing unwanted sound in the vehicle from at least one direction. The microphone assemblies may operate using a delay-and-sum beam-former (403, 405) and digital signal processor (DSP) (407) for enhancing the directivity of the microphone array within the vehicle.
    • 用于车辆的内部后视镜组件(101)包括适于附接到车辆内部的反射镜壳体(106),镜壳体(106)包括大致面向车辆前部的后表面(107)和 通常面向车辆后部的开口。 反射镜(108)设置在镜壳体(106)的开口中,其中第一麦克风组件(108a),第二麦克风组件(108b)和第三麦克风组件(108c)沿着镜子壳体(106)定位 其后部,底部或顶部表面。 三个麦克风组件(108a,108b,108c)中的每一个被布置成基本上三角形的构造,用于从至少一个方向减少车辆中的不需要的声音。 麦克风组件可以使用延迟和和波束成形器(403,405)和数字信号处理器(DSP)(407)来操作,以增强车辆内的麦克风阵列的方向性。
    • 29. 发明申请
    • TWO WIRE AUTOBIAS VEHICULAR MICROPHONE SYSTEM HAVING USER INPUT FUNCTIONALITY AND METHOD OF FORMING SAME
    • 具有用户输入功能的两线AUTOBIAS车载麦克风系统及其形成方法
    • WO2010021803A3
    • 2010-04-29
    • PCT/US2009051151
    • 2009-07-20
    • GENTEX CORPTURNBULL ROBERT RWATSON ALAN R
    • TURNBULL ROBERT RWATSON ALAN R
    • H04R3/00H04R1/04
    • H04R3/00H04R2410/00H04R2499/13
    • An autobias vehicular microphone system (300) includes a microphone (301) which uses an amplifier (306) for amplifying an output of the microphone. A first feedback path (308) provides an amplifier output signal to the amplifier input for providing amplifier linearity, and a second feedback path (305) is used for providing bias to a voltage reference (303). The voltage reference (303) operates to provide an autobias to the amplifier (306) based upon amplifier load-ing. By holding the bias point to a constant voltage, a constant clip level can be maintained depending on varying load conditions of electronic devices (307, 309, 311) using the microphone (301). Additionally, one or more switches can be used to vary the bias point which can be interpreted to control functionality of the electronic devices (307, 309, 311).
    • 自动车载麦克风系统(300)包括使用放大器(306)放大麦克风的输出的麦克风(301)。 第一反馈路径(308)向放大器输入提供放大器输出信号以提供放大器线性度,并且第二反馈路径(305)用于向电压参考(303)提供偏置。 基准电压源(303)用于基于放大器负载向放大器(306)提供自动偏置。 通过将偏置点保持为恒定电压,可以根据使用麦克风(301)的电子设备(307,309,311)的变化的负载状况来保持恒定的限幅电平。 另外,可以使用一个或多个开关来改变可以被解释为控制电子设备(307,309,311)的功能的偏置点。