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    • 5. 发明申请
    • Hand-held ophthalmic device
    • 手持式眼科装置
    • US20060173314A1
    • 2006-08-03
    • US11189132
    • 2005-07-25
    • Paul LeblancNiels Andersen
    • Paul LeblancNiels Andersen
    • A61B8/00
    • A61B8/0858A61B3/1005A61B3/16A61B8/10
    • A hand-held pachymeter includes an ultrasonic probe capable of emitting ultrasonic pulses and capable of receiving echo signals of the ultrasonic pulses. The echo signals may include an echo signal from an anterior portion of a cornea of an eye and an echo signal from a posterior portion of the cornea. The hand-held pachymeter also includes a hand-held computing device and an expansion module that interfaces the probe to the hand-held computing device. The expansion module includes circuitry to produce digitized signals that correspond to the echo signals, and a memory which stores computer instructions to determine a thickness of the cornea based on the digitized signals. The computer instructions are executed by the hand-held computing device.
    • 手持式眼镜仪包括能够发射超声波脉冲并且能够接收超声波脉冲的回波信号的超声波探头。 回波信号可以包括来自眼睛角膜的前部的回波信号和来自角膜后部的回波信号。 手持式测速仪还包括手持式计算装置和将探针连接到手持式计算装置的扩展模块。 扩展模块包括用于产生对应于回波信号的数字化信号的电路,以及存储器,其存储基于数字化信号确定角膜厚度的计算机指令。 计算机指令由手持式计算装置执行。
    • 7. 发明授权
    • Force equalizing filament clamp
    • 力均衡灯丝夹
    • US06434314B1
    • 2002-08-13
    • US09804757
    • 2001-03-13
    • Anthony William GaticaStephen Paul LeBlancRonald Phillip Pepin
    • Anthony William GaticaStephen Paul LeBlancRonald Phillip Pepin
    • G02B600
    • G02B6/2558G02B6/02123G02B6/245G02B6/3616G02B6/3636
    • A filament holding fixture having a closed position for applying substantially equal pressure to a plurality of points around the circumference of a filament. The holding fixture comprises a first jaw having a planar surface and an open-ended channel formed in the first jaw opening to the planar surface, and a second jaw having a structured surface including an open-ended groove of substantially rectangular cross section. Both the channel and the groove are sized for even application of pressure to a filament placed between them when there is axial alignment of the channel with the groove. An angular compensator may be included to facilitate positioning of the groove for even application of pressure to a filament when the planar surface lies adjacent to the structured surface, and the filament holding fixture is in the closed position.
    • 一种灯头保持固定装置,其具有用于对围绕灯丝圆周的多个点施加基本相等的压力的关闭位置。 保持夹具包括具有平坦表面的第一钳口和形成在平面表面的第一钳口中的开口通道,以及具有包括基本上矩形横截面的开口槽的结构化表面的第二钳口。 通道和凹槽的尺寸适用于当通道与槽的轴向对准时,均匀地施加对放置在它们之间的细丝的压力。 可以包括角度补偿器,以便当平坦表面位于结构化表面附近时,槽的定位以便均匀地施加于细丝上,并且灯丝保持夹具处于关闭位置。
    • 9. 发明授权
    • Method and system for modeling external volume changes within an acoustic echo canceller
    • 用于对声学回声消除器内的外部音量变化进行建模的方法和系统
    • US08644522B2
    • 2014-02-04
    • US13076691
    • 2011-03-31
    • Wilfrid Paul LeBlancElias Nemer
    • Wilfrid Paul LeBlancElias Nemer
    • A61F11/06G10K11/16H03B29/00H04B15/00
    • H04M9/082H04R3/02H04R2420/07H04R2430/01H04R2430/03H04R2499/13
    • A method and system are provided in which a device, such as an acoustic echo canceller, may reduce the residual echo that may be heard at the far end of a conversation when an external speaker volume is changed. The device may compute a gain based on an echo estimate produced by a filter and on a near-end signal comprising audio information. The gain may be based on a correlation of the echo estimate and the near-end signal that tracks the changes in volume. Once computed, the gain may be validated to ensure that it is being applied when appropriate. The echo estimate may be adjusted by first applying the gain to an output of the filter and subsequently scaling a value of each of the coefficients of the filter based on the gain. The gain may be smoothed out over consecutive frames based on several adaptation schemes.
    • 提供了一种方法和系统,其中诸如声学回声消除器的装置可以在外部扬声器音量改变时减少可能在对话的远端听到的残余回声。 设备可以基于由滤波器产生的回波估计和包括音频信息的近端信号来计算增益。 增益可以基于跟踪体积变化的回波估计和近端信号的相关性。 一旦计算,可以验证增益以确保在适当时适用该增益。 可以通过首先将增益应用于滤波器的输出并随后基于增益来缩放滤波器的每个系数的值来调整回波估计。 可以基于若干适配方案在连续帧上平滑增益。