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    • 2. 发明授权
    • HGA rotational micro-actuator including an s-shaped frame and method of making thereof
    • HGA旋转微致动器,其包括s形框架及其制造方法
    • US07643253B2
    • 2010-01-05
    • US11536558
    • 2006-09-28
    • Minggao YaoYiru XieWei Ma
    • Minggao YaoYiru XieWei Ma
    • G11B5/56
    • G11B5/5552
    • A rotational micro-actuator (20) used in hard disk driver is disclosed. It comprises a frame (21) approximately in the shape of letter “S” and PZT pieces (28, 29) attached to said frame (21), wherein said frame (21) is formed with a central coupling portion (213) by which the micro-actuator (20) is coupled to a suspension tongue (177), and two pieces of said PZT (28, 29) are arranged in central symmetry manner about said central coupling portion (213) such that said micro-actuator (20) can rotate about said central coupling portion (213) in response to the driving signals applied to said PZT pieces (28, 29), thus cause the displacement of the head element secured to the micro-actuator (20) so as to achieve the fine positioning of the head element. With above configuration, the micro-actuator of this invention will not cause the resonance of the suspension base plate during operation. Thereby the servo bandwidth of the hard disk driver is expanded.
    • 公开了一种用于硬盘驱动器的旋转微致动器(20)。 它包括大致为字母“S”的框架(21)和附着到所述框架(21)上的PZT片(28,29),其中所述框架(21)形成有中心联接部分(213) 微致动器(20)联接到悬挂舌(177),并且两个所述PZT(28,29)围绕所述中心联接部分(213)以中心对称的方式布置,使得所述微致动器(20) )可以响应于施加到所述PZT片(28,29)的驱动信号而围绕所述中心联接部分(213)旋转,从而导致固定到微致动器(20)的头元件的位移,以便实现 头元素的精细定位。 通过上述结构,本发明的微型致动器在操作中不会引起悬架基板的共振。 从而扩大了硬盘驱动器的伺服带宽。
    • 4. 发明授权
    • Method for processing and testing of called terminal and long term evolution system
    • 被叫终端和长期演进系统的处理和测试方法
    • US08954054B2
    • 2015-02-10
    • US13635285
    • 2011-03-18
    • Wei Ma
    • Wei Ma
    • H04W24/00H04W68/00H04W48/18H04W60/00H04W76/02
    • H04W68/00H04W48/18H04W60/00H04W76/10
    • The disclosure discloses a method for processing/testing of a called terminal and a Long Time Evolution (LTE) system. The method comprises that: a network side of the LTE system sends a paging message to the terminal residing in an LTE cell which is called by a Circuit Switched (CS) domain service; the terminal establishes a Radio Resource Control (RRC) connection with the network side; the terminal sends to the network side a message for requesting to establish a CS domain service; the network side indicates, to the terminal, carrier frequency information of a Global System for Mobile Communications (GSM) cell to which the terminal needs to be redirected; the terminal sends a channel request message to the GSM cell; the terminal performs routing area updating in the GSM cell; the terminal sends a paging response message to the GSM cell; the terminal establishes the CS domain service in the GSM cell. By using the disclosure, when being called by the CS domain service, the terminal residing in the LTE cell can return to a cell of a corresponding network to establish the CS domain service.
    • 本公开公开了一种用于处理/测试被叫终端和长时间演进(LTE)系统的方法。 该方法包括:LTE系统的网络侧向驻留在通过电路交换(CS)域服务调用的LTE小区的终端发送寻呼消息; 终端与网络侧建立无线资源控制(RRC)连接; 终端向网络侧发送请求建立CS域服务的消息; 网络侧向终端指示终端需要被重定向到的全球移动通信系统(GSM)小区的载波频率信息; 终端向GSM小区发送信道请求消息; 终端在GSM小区中执行路由区域更新; 终端向GSM小区发送寻呼响应消息; 该终端在GSM小区中建立CS域服务。 通过使用本公开,当被CS域服务调用时,驻留在LTE小区中的终端可以返回到相应网络的小区以建立CS域服务。
    • 6. 发明申请
    • BEAM FORMING IN SPATIALIZED AUDIO SOUND SYSTEMS USING DISTRIBUTED ARRAY FILTERS
    • 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
    • US20110051937A1
    • 2011-03-03
    • US12874502
    • 2010-09-02
    • Wei MaYunhong LiAhmad Bahai
    • Wei MaYunhong LiAhmad Bahai
    • H04R5/00H03F99/00
    • H04R5/02
    • 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.
    • 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。
    • 9. 发明授权
    • Universal quality measurement system for multimedia and other signals
    • 通用质量测量系统用于多媒体等信号
    • US06819924B1
    • 2004-11-16
    • US09744521
    • 2001-01-24
    • Wei MaMartin LeeKambiz Homayounfar
    • Wei MaMartin LeeKambiz Homayounfar
    • H04Q734
    • H04W24/00H04M3/2236
    • A method for measuring perceptual quality of voice signals, audio signals, audio-video signals, and multimedia signals in communication equipment in an operational embodiment communicates a processed test signal via a network from a first device to a second device. The processed test signal is then received by an equipment under test, which further processes the processed test signal to recover a representation of the test signal. The recovered test signal is then objectively analyzed to determine a measure of perceptual quality by comparing the recovered test signal to a pre-stored representation of the test signal. A quality measurement unit that conveniently attaches to equipment under test identifies and evaluates quality of recovered test signals communicated from a remote device, or a test signal communicated by the equipment under test. In the latter case, the quality measurement unit communicates with both the equipment under test and with the network, so that the quality measurement unit itself receives a representation of the communicated test signal by the equipment under test.
    • 用于测量操作实施例中的通信设备中的语音信号,音频信号,音频 - 视频信号和多媒体信号的感知质量的方法将经处理的测试信号经由网络从第一设备传送到第二设备。 经处理的测试信号然后被被测设备接收,这进一步处理处理的测试信号以恢复测试信号的表示。 然后客观分析恢复的测试信号,以通过将恢复的测试信号与测试信号的预先存储的表示进行比较来确定感知质量的度量。方便地附接到被测设备的质量测量单元识别并评估恢复测试的质量 从远程设备传送的信号,或被被测设备通信的测试信号。 在后一种情况下,质量测量单元与被测设备和网络通信,使得质量测量单元本身由被测设备接收所传送的测试信号的表示。
    • 10. 发明授权
    • Methods and apparatus for silence quality measurement
    • 沉默质量测量方法和设备
    • US06490552B1
    • 2002-12-03
    • US09413579
    • 1999-10-06
    • K. Y. Martin LeeWei Ma
    • K. Y. Martin LeeWei Ma
    • G10L1906
    • G10L25/69G10L2021/02168
    • Perceptual quality of a processed signal obtained by processing an original signal having silent periods is evaluated. Silent portions and speech portions of the original signal and corresponding silent portions and speech portions of the processed signal are identified, and the silent portions of the processed signal are evaluated in accordance with a function of amounts of energy contained in the silent portions of the processed signal, corresponding silent portions of the original signal, and an amount of energy in speech portions of the original signal. In one embodiment, the original signal and the processed signal are segmented into frames, frames of the original signal that represent speech and frames of the original signal that represent silence are identified, and the evaluation produces a mean opinion score (MOS).
    • 评估通过处理具有静默期的原始信号而获得的处理信号的感知质量。 识别原始信号的静音部分和语音部分以及处理后的信号的对应的无声部分和语音部分,并根据被处理信号的静音部分中包含的能量的函数来评估处理的信号的静音部分 信号,原始信号的对应静音部分和原始信号的语音部分中的能量量。 在一个实施例中,将原始信号和经处理的信号分割为帧,识别代表语音的原始信号的帧和代表沉默的原始信号的帧,并且评估产生平均意见得分(MOS)。