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    • 3. 发明授权
    • Binaural signal processing system and method
    • 双耳信号处理系统及方法
    • US06222927B1
    • 2001-04-24
    • US08666757
    • 1996-06-19
    • Albert S. FengCharissa R. LansingChen LiuWilliam O'BrienBruce C. Wheeler
    • Albert S. FengCharissa R. LansingChen LiuWilliam O'BrienBruce C. Wheeler
    • H04B1500
    • H04R25/552H04R25/407H04S1/007
    • A desired acoustic signal is extracted from a noisy environment by generating a signal representative of the desired signal with a processor for a hearing aid device. The processor receives binaural signals from two microphones at different locations. The binaural inputs to the processor are converted from analog to digital format and then submitted to a discrete Fourier transform process to generate discrete spectral signal representations. The spectral signals are delayed by a number of time intervals in a dual delay line to provide a number of intermediate signals, each corresponding to a different position relative to a desired signal source. Location of the noise source is determined and the spectral content of the desired signal is determined from the intermediate signal corresponding to the noise source location. Inverse transformation of the selected intermediate signal followed by digital to analog conversion provides an output signal representative of the desired signal.
    • 通过用助听器装置的处理器生成表示期望信号的信号,从有噪声的环境中提取期望的声信号。 处理器从不同位置的两个麦克风接收双耳信号。 处理器的双耳输入从模拟转换为数字格式,然后提交到离散傅立叶变换处理以产生离散的频谱信号表示。 频谱信号在双延迟线中延迟多个时间间隔以提供多个中间信号,每个中间信号对应于相对于期望信号源的不同位置。 确定噪声源的位置,并根据对应于噪声源位置的中间信号确定期望信号的频谱含量。 所选择的中间信号的逆变换随后进行数模转换,提供代表期望信号的输出信号。
    • 5. 发明授权
    • Torque wrench apparatus and method for making and breaking joints
    • 扭力扳手装置及接头断裂方法
    • US09546526B2
    • 2017-01-17
    • US14840919
    • 2015-08-31
    • Xuejun LiChen LiuJie Cui
    • Xuejun LiChen LiuJie Cui
    • E21B19/16
    • E21B19/163
    • A torque wrench apparatus comprises a top wrench, a bottom wrench, and a middle wrench. The top and bottom wrenches are configured such that either one of them rotates a first joint in a first direction, and the middle wrench is configured to rotate a second joint in a second direction opposite the first direction; or the top and bottom wrenches are configured such that either one of them immobilizes a first joint, and the middle wrench is configured to rotate a second joint in a first direction; or the middle wrench is configured to immobilize a first joint, and the top and bottom wrenches are configured such that either one of them rotates a second joint in a second direction opposite the first direction. A method for making and breaking joints with the apparatus is also introduced.
    • 扭矩扳手装置包括顶扳手,底扳手和中间扳手。 顶部和底部扳手构造成使得它们中的任一个在第一方向上旋转第一接头,并且中间扳手构造成沿与第一方向相反的第二方向旋转第二接头; 或者顶部和底部扳手构造成使得它们中的任一个固定第一接头,并且中间扳手构造成沿第一方向旋转第二接头; 或所述中间扳手被构造成固定第一接头,并且所述顶部和底部扳手构造成使得它们中的任一个在与第一方向相反的第二方向上旋转第二接头。 还介绍了一种用于制造和断开该装置的接头的方法。
    • 10. 发明申请
    • Safety needle holder
    • 安全针架
    • US20070060937A1
    • 2007-03-15
    • US11213758
    • 2005-08-30
    • Chen Liu
    • Chen Liu
    • A61B17/34
    • A61M37/0076
    • A safety needle holder for eye or body tattooing purpose that provides reliable operation of the needle, prevents the needle from falling out of its place, and avoids backflow of colorant is comprised of an upper holder containing a transmission shaft, a lower holder containing a needle, and a central holder connecting both of the upper and the lower holders; two flat sections being each made at where approaching both ends of the needle; two resilient members being each inserted to where above and beneath both flat sections; a sleeve being inserted to the lower end of the lower holder; and the needle being exposed out of the sleeve.
    • 用于眼睛或身体纹身目的的安全针保持器,其提供针的可靠操作,防止针脱离其位置,并且避免着色剂回流由包含传动轴的上保持器,包含针的下保持器 和连接两个上部和下部支架的中心支架; 在接近针的两端处的两个平面部分; 两个弹性构件各自插入到两个平坦部分的上方和下方; 套筒被插入到下支架的下端; 针头露出套筒。