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1. 发明授权

US06434247B1 Feedback cancellation apparatus and methods utilizing adaptive reference filter mechanisms 有权
标题翻译：反馈消除装置和利用自适应参考滤波机制的方法
公开(公告)号：US06434247B1
公开(公告)日：2002-08-13
申请号：US09364760
申请日：1999-07-30
申请人： James Mitchell Kates , John Laurence Melanson
发明人： James Mitchell Kates , John Laurence Melanson
IPC分类号： H04R2500
CPC分类号： H04R25/453
摘要： A feedback cancellation system for a hearing aid or the like adapts a first filter in the feedback path that models the quickly varying portion of the hearing aid feedback path, and adapts a second filter in the feedback path that is used either as a reference filter for constrained adaptation or to model more slowly varying portions of the feedback path. The second filter is updated only when the hearing aid signals indicate that an accurate estimate of the feedback path can be obtained. Changes in the second filter are then monitored to detect changes in the hearing aid feedback path. The first filter is adaptively updated at least when the condition of the signal indicates that an accurate estimate of physical feedback cannot be made. It may be updated on a continuous or frequent basis.
摘要翻译：用于助听器等的反馈消除系统适应反馈路径中的第一滤波器，其对助听器反馈路径的快速变化部分进行建模，并且将反馈路径中的第二滤波器适配为用作参考滤波器约束适应或者模拟反馈路径的更慢的变化部分。仅当助听器信号指示可以获得反馈路径的准确估计时才更新第二滤波器。然后监测第二滤波器的变化，以检测助听器反馈路径中的变化。至少当信号的条件指示不能进行物理反馈的准确估计时，第一滤波器被自适应地更新。它可以连续或频繁更新。

2. 发明授权

US06434246B1 Apparatus and methods for combining audio compression and feedback cancellation in a hearing aid 有权
标题翻译：在助听器中组合音频压缩和反馈消除的装置和方法
公开(公告)号：US06434246B1
公开(公告)日：2002-08-13
申请号：US09165825
申请日：1998-10-02
申请人： James Mitchell Kates , John Laurence Melanson
发明人： James Mitchell Kates , John Laurence Melanson
IPC分类号： H04R2501
CPC分类号： H04R25/356 , H04R25/353 , H04R25/453 , H04R25/505 , H04R2225/41 , H04R2225/43
摘要： The present invention combines audio compression and feedback cancellation in an audio system such as a hearing aid. The feedback cancellation element of the present invention uses one or more filters to model the feedback path of the system and thereby subtract the expected feedback from the audio input signal before hearing aid processing occurs. The hearing aid processing includes audio compression, for example multiband compression. The operation of the audio compression element may be responsive to information gleaned from the feedback cancellation element, the feedback cancellation may be responsive to information gleaned from the compression element, or both.
摘要翻译：本发明将音频压缩和反馈消除组合在诸如助听器的音频系统中。本发明的反馈消除元件使用一个或多个滤波器对系统的反馈路径进行建模，从而在助听器处理发生之前从音频输入信号中减去预期反馈。助听器处理包括音频压缩，例如多频带压缩。音频压缩元件的操作可以响应于从反馈消除元件收集的信息，反馈消除可以响应于从压缩元件收集的信息，或二者兼有。

3. 发明授权

US06219427B1 Feedback cancellation improvements 有权
标题翻译：反馈取消改进
公开(公告)号：US06219427B1
公开(公告)日：2001-04-17
申请号：US09152033
申请日：1998-09-12
申请人： James Mitchell Kates , John Laurence Melanson
发明人： James Mitchell Kates , John Laurence Melanson
IPC分类号： H04R2500
CPC分类号： H04R25/453 , H04R25/505 , H04R29/005 , H04R29/006 , H04R2430/20
摘要： Feedback cancellation apparatus uses a cascade of two filters along with a short bulk delay. The first filter is adapted when the hearing aid is turned on in the ear. This filter adapts quickly using a white noise probe signal, and then the filter coefficients are frozen. The first filter models parts of the hearing-aid feedback path that are essentially constant over the course of the day. The second filter adapts while the hearing aid is in use and does not use a separate probe signal. This filter provides a rapid correction to the feedback path model when the hearing aid goes unstable, and more slowly tracks perturbations in the feedback path that occur in daily use. The delay shifts the filter response to make the most effective use of the limited number of filter coefficients.
摘要翻译：反馈消除装置使用两个滤波器的级联以及短的体积延迟。当助听器在耳朵中打开时，第一个过滤器被调整。该滤波器使用白噪声探头信号快速适应，然后滤波器系数被冻结。第一个过滤器模拟助听器反馈路径的一部分，在一天中基本上是恒定的。当助听器正在使用时，第二个滤波器适应，不使用单独的探头信号。当助听器变得不稳定时，该滤波器对反馈路径模型进行快速校正，并且更缓慢地跟踪在日常使用中发生的反馈路径中的扰动。延迟移动滤波器响应，以最有效地使用有限数量的滤波器系数。

4. 发明授权

US06792114B1 Integrated hearing aid performance measurement and initialization system 有权
标题翻译：综合助听器性能测量和初始化系统
公开(公告)号：US06792114B1
公开(公告)日：2004-09-14
申请号：US09413732
申请日：1999-10-06
申请人： James Mitchell Kates , John Laurence Melanson , Eric Lindemann
发明人： James Mitchell Kates , John Laurence Melanson , Eric Lindemann
IPC分类号： H04R2900
CPC分类号： H04R25/70 , A61B5/121 , H04R25/305 , H04R25/505
摘要： A digital hearing aid according to the present invention is capable of measuring its own performance. The hearing aid includes a test signal generator for feeding a test signal into the hearing aid amplifier. The response to the test signal is acquired at a specific point in the hearing aid, depending upon what aspect of performance is to be measured. Various elements of the hearing aid and/or the hearing aid feedback may be bypassed. The hearing aid further includes the capability of initializing hearing aid parameters based upon the performance measurements. The measurement and initialization capability may be entirely integral to the hearing aid, or an external processor may be used to download the measurement program and the run time program, and assist in computing the parameters.
摘要翻译：根据本发明的数字助听器能够测量其自身的性能。助听器包括用于将测试信号馈送到助听放大器中的测试信号发生器。取决于要测量的性能方面，在助听器的特定点获取对测试信号的响应。可以绕过助听器和/或助听器反馈的各种元件。助听器还包括基于性能测量来初始化助听器参数的能力。测量和初始化能力可以完全与助听器成一体，或者可以使用外部处理器来下载测量程序和运行时程序，并协助计算参数。

5. 发明申请

US20120194143A1 Switch-Mode Converter Operating in a Hybrid Discontinuous Conduction Mode (DCM)/Continuous Conduction Mode (CCM) That Uses Double or More Pulses in a Switching Period 审中-公开
标题翻译：开关模式转换器工作在混合不连续导通模式（DCM）/连续导通模式（CCM），在开关周期中使用双脉冲或更多脉冲
公开(公告)号：US20120194143A1
公开(公告)日：2012-08-02
申请号：US13351069
申请日：2012-01-16
申请人： John Laurence Melanson
发明人： John Laurence Melanson
IPC分类号： G05F1/70
CPC分类号： H02M1/4225 , H03M3/476 , Y02B70/126 , Y02P80/112
摘要： A switching converter controller and method for controlling a switch-mode converter in a hybrid discontinuous conduction mode (DCM)/continuous conduction mode (CCM) mode are disclosed. The hybrid mode involves using double (two) or more switching pulses in a switching period of a control signal for controlling the switch-mode converter. The switching period is defined by a switch on-time duration, a switch off-time duration, and an N number of switching pulses. N is an integer greater than one. An inductor current through the inductor of the switch-mode converter is zero before an initial switching pulse, is zero after a last switching pulse, and is non-zero for all other times within the switching period. The switch-mode-converter controller can be used as a power factor correction controller for a power factor corrector. The switch-mode converter controller can be implemented on a single integrated circuit.
摘要翻译：公开了一种用于控制混合不连续导通模式（DCM）/连续导通模式（CCM）模式中的开关模式转换器的开关转换器控制器和方法。混合模式涉及在用于控制开关模式转换器的控制信号的开关周期中使用双（2）个或更多个开关脉冲。开关周期由开关导通时间，开关关断时间和N个开关脉冲限定。 N是大于1的整数。在初始切换脉冲之前，通过开关模式转换器的电感器的电感电流为零，在最后一个开关脉冲之后为零，并且在开关周期内的所有其他时间都为非零。开关模式转换器控制器可用作功率因数校正器的功率因数校正控制器。开关模式转换器控制器可以在单个集成电路上实现。

6. 发明授权

US08125805B1 Switch-mode converter operating in a hybrid discontinuous conduction mode (DCM)/continuous conduction mode (CCM) that uses double or more pulses in a switching period 有权
标题翻译：开关模式转换器在混合不连续导通模式（DCM）/连续导通模式（CCM）中工作，在开关周期中使用双倍或更多脉冲
公开(公告)号：US08125805B1
公开(公告)日：2012-02-28
申请号：US12113536
申请日：2008-05-01
申请人： John Laurence Melanson
发明人： John Laurence Melanson
IPC分类号： H02M7/217
CPC分类号： H02M1/4225 , H03M3/476 , Y02B70/126 , Y02P80/112
摘要： A switching converter controller and method for controlling a switch-mode converter in a hybrid discontinuous conduction mode (DCM)/continuous conduction mode (CCM) mode are disclosed. The hybrid mode involves using double (two) or more switching pulses in a switching period of a control signal for controlling the switch-mode converter. The switching period is defined by a switch on-time duration, a switch off-time duration, and an N number of switching pulses. N is an integer greater than one. An inductor current through the inductor of the switch-mode converter is zero before an initial switching pulse, is zero after a last switching pulse, and is non-zero for all other times within the switching period. The switch-mode converter controller can be used as a power factor correction controller for a power factor corrector. The switch-mode converter controller can be implemented on a single integrated circuit.
摘要翻译：公开了一种用于控制混合不连续导通模式（DCM）/连续导通模式（CCM）模式中的开关模式转换器的开关转换器控制器和方法。混合模式涉及在用于控制开关模式转换器的控制信号的开关周期中使用双（2）个或更多个开关脉冲。开关周期由开关导通时间，开关关断时间和N个开关脉冲限定。 N是大于1的整数。在初始切换脉冲之前，通过开关模式转换器的电感器的电感电流为零，在最后一个开关脉冲之后为零，并且在开关周期内的所有其他时间都为非零。开关模式转换器控制器可用作功率因数校正器的功率因数校正控制器。开关模式转换器控制器可以在单个集成电路上实现。

7. 发明授权

US07808263B2 Non-invasive, low pin count test circuits and methods utilizing emulated stress conditions 有权
标题翻译：非侵入性，低引脚数测试电路和利用模拟应力条件的方法
公开(公告)号：US07808263B2
公开(公告)日：2010-10-05
申请号：US12381774
申请日：2009-03-17
申请人： Murari Kejariwal , John Laurence Melanson , Ammisetti V. Prasad , Sherry Xiaohong Wu
发明人： Murari Kejariwal , John Laurence Melanson , Ammisetti V. Prasad , Sherry Xiaohong Wu
IPC分类号： G01R31/02
CPC分类号： G01R31/2884
摘要： An integrated circuit including at least one internal operational block, which includes test control circuitry for initiating a test mode and testing circuitry for verifying an operation of the integrated circuit under a more stringent condition in the test mode as compared to a condition in another operating mode such that proper operation of the integrated circuit is assured in the another operating mode. Pin control circuitry selectively outputs a test signal from a selected pin in the test mode indicative of the operation of the internal block, wherein the selected pin is utilized for exchanging another signal when the integrated circuit is in the another operating mode.
摘要翻译：一种集成电路，包括至少一个内部操作块，其包括用于启动测试模式的测试控制电路和用于在测试模式中在更严格的条件下验证集成电路的操作的测试电路，与其他操作模式中的条件相比使得在另一操作模式下确保集成电路的正确操作。引脚控制电路在指示内部块的操作的测试模式中选择性地输出来自所选引脚的测试信号，其中当集成电路处于另一操作模式时，所选择的引脚用于交换另一信号。

8. 发明授权

US07719248B1 Discontinuous conduction mode (DCM) using sensed current for a switch-mode converter 有权
标题翻译：不连续导通模式（DCM）使用感应电流作为开关模式转换器
公开(公告)号：US07719248B1
公开(公告)日：2010-05-18
申请号：US12110714
申请日：2008-04-28
申请人： John Laurence Melanson
发明人： John Laurence Melanson
IPC分类号： G05F1/575 , G05F1/613
CPC分类号： H02M1/4225 , H03M3/476 , Y02B70/126 , Y02P80/112
摘要： A switch-mode converter controller and method utilizes a comparator for receiving and comparing a sensed current and a peak current that is determined by a product of a multiplying factor, that is greater than or equal to two, and a target current. A finite state machine (FSM) is configured to operate the switch-mode converter in a discontinuous conduction mode (DCM). Responsive to the comparator, the FSM turns on the switch and observes an on-time duration of the switch until the sensed current reaches the peak current; calculates a switching period responsive to the peak current and the observed on-time duration; and varies the switching period responsive to the on-time duration and the multiplying factor such that an average of the sensed current equals the target current. The FSM can also be configured to alternatively operate the switch-mode converter in a continuous conduction mode (CCM).
摘要翻译：开关模式转换器控制器和方法利用比较器来接收和比较感测电流和由乘法因子（大于或等于2）乘以目标电流确定的峰值电流。有限状态机（FSM）被配置为以不连续导通模式（DCM）操作开关模式转换器。响应于比较器，FSM打开开关并观察开关的导通时间，直到感测到的电流达到峰值电流; 计算响应于峰值电流和观察到的接通时间的开关周期; 并且响应于导通时间和乘法因子改变开关周期，使得感测电流的平均值等于目标电流。 FSM还可以配置为以连续导通模式（CCM）交替操作开关模式转换器。

9. 发明授权

US07308027B1 Circuits and methods for reducing distortion and noise in pulse width modulation systems utilizing full-bridge drivers 有权
标题翻译：利用全桥驱动器减小脉冲宽度调制系统中的失真和噪声的电路和方法
公开(公告)号：US07308027B1
公开(公告)日：2007-12-11
申请号：US10828816
申请日：2004-04-21
申请人： Johann Guy Gaboriau , Melvin L. Hagge , Lingli Zhang , John Laurence Melanson
发明人： Johann Guy Gaboriau , Melvin L. Hagge , Lingli Zhang , John Laurence Melanson
IPC分类号： H03K7/08
CPC分类号： H03F3/2173 , H03F1/26 , H03F1/32 , H03F3/68 , H03F2200/03 , H03F2200/351 , H03F2200/372
摘要： A pulse width modulation circuit for driving a full-bridge output load includes a pulse width modulation stage for generating, from an input data stream, a pulse width modulated data stream for driving a terminal of a full-bridge output load and another pulse width modulated data stream for driving another terminal of the full bridge output load. A delay circuit delays the another pulse width modulated data stream relative to the pulse width modulated data stream such that edges of the another pulse width modulated data stream and edges of the pulse width modulated data stream are temporally spaced.
摘要翻译：用于驱动全桥输出负载的脉宽调制电路包括脉冲宽度调制级，用于从输入数据流生成用于驱动全桥输出负载的端子的脉冲宽度调制数据流，以及用于驱动全桥输出负载的另一个脉宽调制用于驱动全桥输出负载的另一终端的数据流。延迟电路相对于脉宽调制数据流延迟另一个脉冲宽度调制数据流，使得另一脉宽调制数据流的边缘和脉宽调制数据流的边沿在时间上间隔开。

10. 发明授权

US07183954B1 Circuits, systems and methods for volume control in low noise 1-bit digital audio systems 有权
标题翻译：低噪声1位数字音频系统中音量控制的电路，系统和方法
公开(公告)号：US07183954B1
公开(公告)日：2007-02-27
申请号：US10818240
申请日：2004-04-05
申请人： John Laurence Melanson , Jason Powell Rhode
发明人： John Laurence Melanson , Jason Powell Rhode
IPC分类号： H03M3/00
CPC分类号： H03M7/3015 , H03M7/3028 , H03M7/304
摘要： A data converter including a digital volume control for continuously scaling a received stream of digital audio data by a selected factor and a low noise delta-sigma modulator for re-quantizing a scaled digital data stream output from the digital volume control.
摘要翻译：一种数据转换器，包括数字音量控制，用于通过所选择的因子连续缩放所接收的数字音频数据流，以及用于重新量化从数字音量控制输出的经缩放的数字数据流的低噪声Δ-Σ调制器。

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