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1. 发明申请

US20110051937A1 BEAM FORMING IN SPATIALIZED AUDIO SOUND SYSTEMS USING DISTRIBUTED ARRAY FILTERS 有权
标题翻译：使用分布式阵列滤波器形成空间音频声音系统中的波束形成
公开(公告)号：US20110051937A1
公开(公告)日：2011-03-03
申请号：US12874502
申请日：2010-09-02
申请人： Wei Ma , Yunhong Li , Ahmad Bahai
发明人： Wei Ma , Yunhong Li , Ahmad Bahai
IPC分类号： H04R5/00 , H03F99/00
CPC分类号： H04R5/02
摘要： A system includes multiple speakers arranged in a speaker array configuration. The system also includes one or more filters configured to filter audio signals and generate filtered audio signals. The one or more filters are configured to operate using filter coefficients associated with a desired beam pattern to be produced by the multiple speakers. The system further includes at least one amplifier configured to amplify the filtered audio signals and provide the amplified filtered audio signals to the speakers. The one or more filters reside within or are coupled to the at least one amplifier. The system may further include a controller configured to modify at least one of the filter coefficients based on a change in the speaker configuration. The filters may operate independently of a centralized processor, and a centralized processor may not even be required to provide electronic beam forming.
摘要翻译：系统包括布置在扬声器阵列配置中的多个扬声器。该系统还包括被配置为过滤音频信号并产生滤波后的音频信号的一个或多个滤波器。一个或多个滤波器被配置为使用与由多个扬声器产生的期望波束图案相关联的滤波器系数进行操作。该系统还包括至少一个放大器，其被配置为放大经滤波的音频信号并将放大的经滤波的音频信号提供给扬声器。一个或多个滤波器驻留在或耦合到至少一个放大器。该系统还可以包括控制器，其被配置为基于扬声器配置的变化来修改至少一个滤波器系数。滤波器可以独立于集中处理器操作，并且中央处理器甚至可能不需要提供电子束形成。

2. 发明授权

US08396233B2 Beam forming in spatialized audio sound systems using distributed array filters 有权
标题翻译：在使用分布式阵列滤波器的空间音频声音系统中形成光束
公开(公告)号：US08396233B2
公开(公告)日：2013-03-12
申请号：US12874502
申请日：2010-09-02
申请人： Wei Ma , Yunhong Li , Ahmad Bahai
发明人： Wei Ma , Yunhong Li , Ahmad Bahai
IPC分类号： H04R5/02
CPC分类号： H04R5/02
摘要： A system includes multiple speakers arranged in a speaker array configuration. The system also includes one or more filters configured to filter audio signals and generate filtered audio signals. The one or more filters are configured to operate using filter coefficients associated with a desired beam pattern to be produced by the multiple speakers. The system further includes at least one amplifier configured to amplify the filtered audio signals and provide the amplified filtered audio signals to the speakers. The one or more filters reside within or are coupled to the at least one amplifier. The system may further include a controller configured to modify at least one of the filter coefficients based on a change in the speaker configuration. The filters may operate independently of a centralized processor, and a centralized processor may not even be required to provide electronic beam forming.
摘要翻译：系统包括布置在扬声器阵列配置中的多个扬声器。该系统还包括被配置为过滤音频信号并产生滤波后的音频信号的一个或多个滤波器。一个或多个滤波器被配置为使用与由多个扬声器产生的期望波束图案相关联的滤波器系数进行操作。该系统还包括至少一个放大器，其被配置为放大经滤波的音频信号并将放大的经滤波的音频信号提供给扬声器。一个或多个滤波器驻留在或耦合到至少一个放大器。该系统还可以包括控制器，其被配置为基于扬声器配置的变化来修改至少一个滤波器系数。滤波器可以独立于集中处理器操作，并且中央处理器甚至可能不需要提供电子束形成。

3. 发明授权

US07864969B1 Adaptive amplifier circuitry for microphone array 有权
标题翻译：用于麦克风阵列的自适应放大器电路
公开(公告)号：US07864969B1
公开(公告)日：2011-01-04
申请号：US11307930
申请日：2006-02-28
申请人： Wei Ma , Ahmad Bahai
发明人： Wei Ma , Ahmad Bahai
IPC分类号： H04R3/00
CPC分类号： H04R3/005 , H04R3/02 , H04R2410/01 , H04R2430/23
摘要： Adaptive amplifier circuitry for a microphone array with alternative operating modes. In one mode, background noise is reduced when the speaker is in a near field position and a relatively quiet environment. In another mode, the microphone signals are amplified, with speech being boosted more than background noise, when the speaker moves from a near field position to a far field position.
摘要翻译：具有可选操作模式的麦克风阵列的自适应放大器电路。在一种模式中，当扬声器处于近场位置和相对安静的环境时，背景噪声降低。在另一种模式中，当扬声器从近场位置移动到远场位置时，麦克风信号被放大，语音被提升大于背景噪声。

4. 发明授权

US08248885B2 Sub-beam forming receiver circuitry for ultrasound system 有权
标题翻译：用于超声系统的子波束形成接收器电路
公开(公告)号：US08248885B2
公开(公告)日：2012-08-21
申请号：US12503399
申请日：2009-07-15
申请人： Wei Ma , Zhenyong Zhang , Shougang Wang , Masood Yousefi , Ahmad Bahai
发明人： Wei Ma , Zhenyong Zhang , Shougang Wang , Masood Yousefi , Ahmad Bahai
IPC分类号： G03B42/06
CPC分类号： G01S15/8927 , G01S7/52026 , G10K11/346
摘要： Multi-channel receiver circuitry for a sub-beam forming receiver of an ultrasound system in which digital filtering, down-sampling and successive data storage circuitry impose programmable fine and coarse time delays on received digital data signals.
摘要翻译：用于超声系统的子波束形成接收器的多声道接收器电路，其中数字滤波，下采样和连续数据存储电路在接收到的数字数据信号上施加可编程的精细和粗略的时间延迟。

5. 发明申请

US20110013488A1 SUB-BEAM FORMING RECEIVER CIRCUITRY FOR ULTRASOUND SYSTEM 有权
标题翻译：用于超声波系统的子波束形成接收器电路
公开(公告)号：US20110013488A1
公开(公告)日：2011-01-20
申请号：US12503399
申请日：2009-07-15
申请人： Wei Ma , Zhenyong Zhang , Shougang Wang , Masood Yousefi , Ahmad Bahai
发明人： Wei Ma , Zhenyong Zhang , Shougang Wang , Masood Yousefi , Ahmad Bahai
IPC分类号： H04B1/06
CPC分类号： G01S15/8927 , G01S7/52026 , G10K11/346
摘要： Multi-channel receiver circuitry for a sub-beam forming receiver of an ultrasound system in which digital filtering, down-sampling and successive data storage circuitry impose programmable fine and coarse time delays on received digital data signals.
摘要翻译：用于超声系统的子波束形成接收器的多声道接收器电路，其中数字滤波，下采样和连续数据存储电路在接收到的数字数据信号上施加可编程的精细和粗略的时间延迟。

6. 发明授权

US07676052B1 Differential microphone assembly 有权
标题翻译：差速麦克风组合
公开(公告)号：US07676052B1
公开(公告)日：2010-03-09
申请号：US11307932
申请日：2006-02-28
申请人： Wei Ma , Ahmad Bahai
发明人： Wei Ma , Ahmad Bahai
IPC分类号： H04R25/00
CPC分类号： H04R1/083
摘要： A differential microphone assembly with multiple membranes in a single package and oriented in mutually exclusive directions.
摘要翻译：差分麦克风组件，其具有单个封装中的多个膜并且以相互排斥的方向定向。

7. 发明授权

US07460024B1 Active sensor circuitry for operating at low power and low duty cycle while monitoring occurrence of anticipated event 有权
标题翻译：有源传感器电路用于在低功率和低占空比下工作，同时监测预期事件的发生
公开(公告)号：US07460024B1
公开(公告)日：2008-12-02
申请号：US11306949
申请日：2006-01-17
申请人： Wei Ma , Ahmad Bahai
发明人： Wei Ma , Ahmad Bahai
IPC分类号： G08B23/00
CPC分类号： G08B25/009 , G08B21/0286
摘要： Active sensor circuitry for operating at low power and a low duty cycle while monitoring for an occurrence of an anticipated event.
摘要翻译：有源传感器电路用于在低功率和低占空比下工作，同时监测预期事件的发生。

8. 发明申请

US20120154003A1 SPUR REDUCTION TECHNIQUE FOR SAMPLING PLL'S 有权
标题翻译：用于采样PLL的减少技术
公开(公告)号：US20120154003A1
公开(公告)日：2012-06-21
申请号：US12973353
申请日：2010-12-20
申请人： Xiang Gao , Ahmad Bahai , Mounir Bohsali , Ali Djabbari , Eric Klumperink , Bram Nauta , Gerard Socci
发明人： Xiang Gao , Ahmad Bahai , Mounir Bohsali , Ali Djabbari , Eric Klumperink , Bram Nauta , Gerard Socci
IPC分类号： H03L7/091
CPC分类号： H03L7/091 , H03L7/07 , H03L7/0802 , H03L7/0812
摘要： Control circuitry and method of controlling for a sampling phase lock loop (PLL). By controlling the duty cycle of a sampling control signal, in accordance with the PLL reference and output signals, spurious output signals from the sampling PLL being controlled can be reduced.
摘要翻译：控制电路和控制采样锁相环（PLL）的方法。通过控制采样控制信号的占空比，根据PLL参考和输出信号，可以减少来自被控制的采样PLL的杂散输出信号。

9. 发明申请

US20080297386A1 SIGMA-DELTA MODULATOR WITH DAC RESOLUTION LESS THAN ADC RESOLUTION 有权
标题翻译：具有DAC分辨率低于ADC分辨率的SIGMA-DELTA调制器
公开(公告)号：US20080297386A1
公开(公告)日：2008-12-04
申请号：US11754442
申请日：2007-05-29
申请人： Franco Maloberti , Masood Yousefi , Ahmad Bahai
发明人： Franco Maloberti , Masood Yousefi , Ahmad Bahai
IPC分类号： H03M3/00
CPC分类号： H03M3/428 , H03M3/454
摘要： A sigma-delta modulator is provided with a feedback digital-to-analog converter having less resolution than the quantizer, while providing a reduced length output word, requiring minimal additional internal processing, and shaping of the truncation error by an effective noise transfer function greater than the order of the host sigma-delta modulator.
摘要翻译： Σ-Δ调制器具有反馈数模转换器，其具有比量化器更低的分辨率，同时提供减小长度的输出字，需要最小额外的内部处理，并通过有效噪声传递函数对截断误差进行整形比主机Σ-Δ调制器的顺序。

10. 发明授权

US07017127B1 Method and system for enabling energy efficient wireless connectivity 有权
标题翻译：实现节能无线连接的方法和系统
公开(公告)号：US07017127B1
公开(公告)日：2006-03-21
申请号：US10453475
申请日：2003-06-02
申请人： Ahmad Bahai
发明人： Ahmad Bahai
IPC分类号： G06F17/50
CPC分类号： G06F17/5063 , G06F17/505 , G06F2217/78
摘要： The invention is directed to a system and method that enables several different factors associated with the implementation of a particular wireless application to be considered in the design of an energy efficient wireless connectivity solution for an integrated circuit. Factors regarding the implementation of wireless communication, such as spectral efficiency, number of transistors available in an integrated circuit to process the signal, actual travel distance to be covered by the signal and application processing of data included in the signal are considered when designing the arrangement of analog and digital circuits for a particular wireless application.
摘要翻译：本发明涉及一种系统和方法，其能够在集成电路的能量效率无线连接解决方案的设计中考虑与特定无线应用的实施相关联的几个不同因素。在设计布置时考虑无线通信的实现的因素，例如频谱效率，用于处理信号的集成电路中可用的晶体管数量，由信号覆盖的实际行进距离和包括在信号中的数据的应用处理用于特定无线应用的模拟和数字电路。

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