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41. 发明授权

US09054500B2 Integrated micro-plasma limiter 有权
标题翻译：集成微型等离子体限制器
公开(公告)号：US09054500B2
公开(公告)日：2015-06-09
申请号：US13865921
申请日：2013-04-18
申请人： NORTHROP GRUMMAN SYSTEMS CORPORATION
发明人： Patty Chang-Chien , Kelly Jill Hennig , Xianglin Zeng , Jeffrey M. Yang
IPC分类号： H01T4/16 , H03G11/00 , H01P1/14 , H01L23/60
CPC分类号： H01T4/16 , H01L23/60 , H01L2924/0002 , H01P1/14 , H03G11/002 , H03G11/004 , H01L2924/00
摘要： A plasma power limiter fabricated using wafer-level fabrication techniques with other circuit elements. The plasma limiter includes a signal substrate and a trigger substrate defining a hermetically sealed cavity therebetween in which is encapsulated an ionizable gas. The signal substrate includes a signal line within the cavity and the trigger substrate includes at least one trigger probe extending from the trigger substrate towards the transmission line. If a signal propagating on the transmission line exceeds a power threshold, the gas within the cavity is ionized creating a conduction path between the transmission line and the trigger probe that draws off the high power current.
摘要翻译：使用晶圆级制造技术与其他电路元件制造的等离子体功率限制器。等离子体限制器包括信号基板和触发基板，其在其间限定密封腔，其中封装有可电离气体。信号衬底包括腔内的信号线，并且触发衬底包括从触发衬底朝向传输线延伸的至少一个触发探针。如果在传输线上传播的信号超过功率阈值，则空腔内的气体被电离，在传输线和触发探头之间产生一个导通路径，从而消除高功率电流。

42. 发明授权

US09014380B2 Control of a loudspeaker output 有权
标题翻译：扬声器输出的控制
公开(公告)号：US09014380B2
公开(公告)日：2015-04-21
申请号：US13360427
申请日：2012-01-27
申请人： Temujin Gautama , Bram Hedebouw
发明人： Temujin Gautama , Bram Hedebouw
IPC分类号： H03G11/00 , H04R3/00
CPC分类号： H04R3/007 , H04L25/06 , H04R3/002
摘要： A loudspeaker drive circuit comprises an input for receiving an audio signal and a signal processor for processing the audio signal before application to the loudspeaker. The signal processor processes the audio signal to derive a loudspeaker drive signal which results in the loudspeaker membrane reaching its maximum displacement in both directions of diaphragm displacement.
摘要翻译：扬声器驱动电路包括用于接收音频信号的输入端和用于在施加到扬声器之前处理音频信号的信号处理器。信号处理器处理音频信号以导出扬声器驱动信号，这导致扬声器膜在隔膜位移的两个方向上达到其最大位移。

43. 发明授权

US08995521B2 Method and apparatus for high density pulse density modulation 有权
标题翻译：用于高密度脉冲密度调制的方法和装置
公开(公告)号：US08995521B2
公开(公告)日：2015-03-31
申请号：US13663534
申请日：2012-10-30
申请人： LSI Corporation
发明人： Donald R. Laturell , Said E. Abdelli , Peter Kiss , James F. MacDonald , Ross S. Wilson , Kameran Azadet
IPC分类号： H03K7/04 , H04L27/04 , H03M5/04 , H03G11/00
CPC分类号： H04L27/04 , H03F3/217 , H03F3/24 , H03F3/60 , H03G11/002 , H03M5/04
摘要： A method and system for high density pulse density modulation is disclosed. In accordance with the present disclosure, a modulation function is split in to two band limited streams using a complementary pair of non-linear functions. More specifically, one bitstream definition contains the peaks of the original function while the other bitstream contains a soft clipping version of the original bitstream. The bitstreams are applied to a pair of switching amplifiers, and the bitstreams can be combined again to reconstruct the original function. The method in accordance with the present disclosure limits the amount of input power necessary to achieve higher output power, lowers operating voltage and improves power amplifier efficiency.
摘要翻译：公开了一种用于高密度脉冲密度调制的方法和系统。根据本公开，使用互补的一对非线性函数将调制功能分为两个频带限制流。更具体地，一个比特流定义包含原始功能的峰值，而另一个比特流包含原始比特流的软限幅版本。比特流被施加到一对开关放大器，并且可以再次组合比特流以重建原始功能。根据本公开的方法限制了实现更高输出功率所需的输入功率量，降低了工作电压并提高了功率放大器的效率。

44. 发明授权

US08983080B2 Method and system for temperature protection of a speaker 有权
标题翻译：扬声器温度保护方法及系统
公开(公告)号：US08983080B2
公开(公告)日：2015-03-17
申请号：US13447377
申请日：2012-04-16
申请人： Chenchi Luo , Milind Anil Borkar , Arthur John Redfern
发明人： Chenchi Luo , Milind Anil Borkar , Arthur John Redfern
IPC分类号： H03G11/00 , H03G9/00 , H03G9/02 , H04R3/00 , H04R9/06
CPC分类号： H03G9/005 , H03G9/025 , H04R3/007 , H04R9/06
摘要： For protecting a speaker, an input signal is received and filtered into component signals. A sum of the component signals is approximately equal to the input signal. The component signals include at least first and second component signals. A perceived loudness to a human from the speaker is more sensitive to the first component signal than to the second component signal. A temperature of the speaker is estimated. In response to the estimated temperature, the second component signal is scaled. An output signal is output to the speaker in response to the first component signal and the scaled second component signal.
摘要翻译：为了保护扬声器，接收输入信号并将其滤波成分量信号。分量信号的和近似等于输入信号。分量信号至少包括第一和第二分量信号。来自扬声器的对人的感知响度比第二分量信号对第一分量信号更敏感。估计扬声器的温度。响应于估计的温度，第二分量信号被缩放。响应于第一分量信号和缩放的第二分量信号，输出信号被输出到扬声器。

45. 发明授权

US08971544B2 Signal compression based on transducer displacement 有权
标题翻译：基于传感器位移的信号压缩
公开(公告)号：US08971544B2
公开(公告)日：2015-03-03
申请号：US13335178
申请日：2011-12-22
申请人： Daniel M Gauger, Jr. , Paul Yamkovoy , Ricardo F. Carreras
发明人： Daniel M Gauger, Jr. , Paul Yamkovoy , Ricardo F. Carreras
IPC分类号： H03G11/00
CPC分类号： H04R29/003 , H04R1/1083
摘要： A method for adjusting the performance of an electroacoustic transducer includes receiving, by gain adjustment circuit, a displacement signal corresponding to a relative motion between a magnetic structure of the electroacoustic transducer and a voice coil of the electroacoustic transducer. The method includes detecting, by the gain adjustment circuit, a displacement signal value of the displacement signal as one of meeting or exceeding a displacement signal threshold. The method includes modifying, by the gain adjustment circuit, a loop gain of an active noise reduction loop associated with the electroacoustic transducer when the displacement signal value of the displacement signal one of meets or exceeds the displacement signal threshold.
摘要翻译：用于调整电声换能器性能的方法包括通过增益调节电路接收对应于电声换能器的磁结构与电声换能器的音圈之间的相对运动的位移信号。该方法包括通过增益调整电路将位移信号的位移信号值检测为满足或超过位移信号阈值之一。所述方法包括当所述位移信号之一的位移信号值满足或超过所述位移信号阈值时，由所述增益调整电路修改与所述电声换能器相关联的有源降噪环路的环路增益。

46. 发明授权

US08786367B2 Voltage controlling circuit 有权
标题翻译：电压控制电路
公开(公告)号：US08786367B2
公开(公告)日：2014-07-22
申请号：US13523851
申请日：2012-06-14
申请人： Yung-Ming Lee , Tzu-Fei Han
发明人： Yung-Ming Lee , Tzu-Fei Han
IPC分类号： H03G3/10 , H03F1/26 , H03G11/00
CPC分类号： H03F1/26 , H03F2200/03 , H03F2200/411 , H03F2200/441 , H03G11/002
摘要： A voltage clamping module is disposed at an output terminal of a gain amplifying module, so that a voltage level of an amplifying signal outputted by the gain amplifying module can be clamped within a predetermined range. The voltage clamping module includes an upper bound voltage clamping module, which is utilized for limiting the voltage level of the amplifying signal to be lower than an upper bound voltage level, and a lower bound voltage clamping module, which is utilized for limiting the voltage level of the amplifying signal to be higher than a lower bound voltage level.
摘要翻译：电压钳位模块设置在增益放大模块的输出端，使得增益放大模块输出的放大信号的电压电平可以钳位在预定范围内。电压钳位模块包括用于将放大信号的电压电平限制为低于上限电压电平的上限电压钳位模块和用于限制电压电平的下限钳位模块的放大信号高于下限电压电平。

47. 发明授权

US08712065B2 Transducer displacement protection 有权
标题翻译：传感器位移保护
公开(公告)号：US08712065B2
公开(公告)日：2014-04-29
申请号：US12453090
申请日：2009-04-29
申请人： Mads Emil Solgaard , Bjørn Sand Jensen
发明人： Mads Emil Solgaard , Bjørn Sand Jensen
IPC分类号： H03G11/00
CPC分类号： H03G9/025 , H03G9/005
摘要： This invention relates to the mechanical protection using digital processing and a predictive estimation of instantaneous displacement of the voice coil in a loudspeaker transducer.The invention solves the problem of limiting the coil displacement of the transducer by applying a look-a-head based linear or non-linear predictor and a controller operating directly on the displacement signal in order to finally convert back into the incoming signal domain.
摘要翻译：本发明涉及使用数字处理的机械保护和扬声器换能器中音圈的瞬时位移的预测估计。本发明解决了通过应用基于头目的线性或非线性预测器和直接在位移信号上操作的控制器来限制换能器的线圈位移以最终转换回入射信号域的问题。

48. 发明申请

US20140086418A1 Method and Apparatus for Computing Metric Values for Loudspeaker Protection 有权
标题翻译：用于计算扬声器保护度量值的方法和装置
公开(公告)号：US20140086418A1
公开(公告)日：2014-03-27
申请号：US13654671
申请日：2012-10-18
申请人： DIALOG SEMICONDUCTOR B.V.
发明人： Wessel Lubberhuizen , Marinus Wilhelmus Kruiskamp
IPC分类号： H03G11/00
CPC分类号： H04R9/022 , G01R1/00 , G01R19/00 , G01R19/06 , G01R19/165 , G01R19/16528 , H03F1/52 , H04R3/007 , H04R29/001 , H04R29/003
摘要： Systems and methods thereof for obtaining metrics and an accurate threshold to prevent loudspeaker overheating, based on autocorrelation and cross-correlation of band-pass filtered current and voltage measurements are disclosed. The methods invented are based on instantaneous voltage and current measurements. The invention does not require a DC or pilot signal to be added to the audio signal in order to do perform the measurement, and it is not disturbed by capacitive or inductive components in the complex impedance of the voice coil.
摘要翻译：公开了基于带通滤波电流和电压测量的自相关和互相关以获得度量的准确阈值以及防止扬声器过热的系统及其方法。所发明的方法基于瞬时电压和电流测量。本发明不需要将DC或导频信号添加到音频信号中，以便执行测量，并且其不会被音圈的复阻抗中的电容或电感分量干扰。

49. 发明授权

US08615089B2 Dynamic power management in a portable media delivery system 有权
标题翻译：便携式媒体传输系统中的动态电源管理
公开(公告)号：US08615089B2
公开(公告)日：2013-12-24
申请号：US12944095
申请日：2010-11-11
申请人： Jesse L. Dorogusker , Donald J. Novotney , Scott Krueger , Robert Michelet , Jeffrey Allan Hammerstrom
发明人： Jesse L. Dorogusker , Donald J. Novotney , Scott Krueger , Robert Michelet , Jeffrey Allan Hammerstrom
IPC分类号： H03G11/00 , H04B15/00
CPC分类号： G06F1/3203 , G06F1/1632 , G06F1/30 , G06F1/305 , G06F1/3215
摘要： A consumer electronic product (e.g., a portable media player ported to a media delivery accessory) is powered by a limited capacity DC power source (such as a battery or mini-fuel cell). The consumer electronic product limits the maximum allowable sound pressure level (SPL) that can be produced by the speakers. In one embodiment, the maximum allowable SPL is based upon an amount of stored energy available in the limited capacity DC power source.
摘要翻译：消费电子产品（例如，移植到媒体传送附件的便携式媒体播放器）由有限容量的DC电源（例如电池或小型燃料电池）供电。消费电子产品限制扬声器可产生的最大允许声压级（SPL）。在一个实施例中，最大允许SPL基于在有限容量DC电源中可用的存储能量的量。

50. 发明授权

US08515084B2 Passive sound pressure level limiter with balancing circuit 有权
标题翻译：被动声压级限制器带平衡电路
公开(公告)号：US08515084B2
公开(公告)日：2013-08-20
申请号：US13043313
申请日：2011-03-08
申请人： Joshua James Barr , Medford Alan Dyer , Alan Dean Michel , Christopher Todd Welsh
发明人： Joshua James Barr , Medford Alan Dyer , Alan Dean Michel , Christopher Todd Welsh
IPC分类号： H03G11/00
CPC分类号： H03G11/00
摘要： A passive sound pressure level (SPL) limiter is provided that can be used with audio sources of varying drive levels and headphones or earphones of varying sensitivity. The SPL limiter includes a control circuit and left and right channel limiting circuits, each of which includes a pair of FETS. The SPL limiter may include a balancing circuit that separates the control signal output by the control circuit into left and right channel control signals. The SPL limiter may also include a microphone, for example integrated into an earpiece cable.
摘要翻译：提供了一个被动声压级（SPL）限制器，可用于不同驱动级别的音频源和不同灵敏度的耳机或耳机。 SPL限幅器包括控制电路和左，右通道限制电路，每个电路包括一对FET。 SPL限幅器可以包括将由控制电路输出的控制信号分离成左和右声道控制信号的平衡电路。 SPL限制器还可以包括麦克风，例如集成到耳机电缆中。

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