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    • 81. 发明授权
    • Extension of battery life in a battery-powered optical pointing device
    • 在电池供电的光学指向设备中延长电池寿命
    • US07295183B2
    • 2007-11-13
    • US10795443
    • 2004-03-09
    • Michel WilleminAndré GrandjeanMarc DegrauweJames Harold Lauffenburger
    • Michel WilleminAndré GrandjeanMarc DegrauweJames Harold Lauffenburger
    • G09G5/00
    • G06F3/0421G06F1/3203G06F1/3287Y02D10/171Y02D50/20
    • A method for extending battery life in an optical pointing device powered by one or more battery cells (30), the optical pointing device including an optical motion sensing device (10) for tracking motion with respect to a surface (S) and comprising motion sensing circuitry (12) coupled to an optical sensor (15) and at least one light source (14) for illuminating a portion of the surface. The method comprises the steps of (i) monitoring the power output of the said one or more battery cells (30), (ii) detecting when the said power output falls below a certain threshold indicative of a low battery status (EOL) and (iii) upon detection of the low battery status, switching the optical pointing device into a low power consumption mode where power consumption of the optical pointing device is reduced and performance of the optical motion sensing device is partially degraded. An optical pointing device implementing this method.
    • 一种用于在由一个或多个电池单元(30)供电的光学指向装置中延长电池寿命的方法,所述光学指向装置包括用于跟踪相对于表面(S)的运动的光学运动感测装置(10),并且包括运动感测 耦合到光学传感器(15)的电路(12)和用于照射表面的一部分的至少一个光源(14)。 该方法包括以下步骤:(i)监测所述一个或多个电池单元(30)的功率输出,(ii)检测所述功率输出何时下降到指示低电量状态(EOL)的特定阈值以及( iii)在检测到低电池状态时,将光学指向装置切换到低功耗模式,其中光学指向装置的功率消耗减小并且光学运动感测装置的性能部分劣化。 实现该方法的光学指向装置。
    • 83. 发明申请
    • Motion detection mechanism for laser illuminated optical mouse sensor
    • 激光照明光电鼠标传感器运动检测机构
    • US20060226346A1
    • 2006-10-12
    • US11165537
    • 2005-06-24
    • Lawrence BieberMichel Willemin
    • Lawrence BieberMichel Willemin
    • G06M7/00
    • G06F3/0317
    • There is described a method for measuring relative motion between an illuminated portion of a surface and an optical sensing device comprising a coherent light source and a photodetector array, the method comprising the steps of illuminating under a determined gradient by means of the coherent light source the surface portion at a determined flash rate; detecting by means of the photodetector array speckled light intensity pattern of the illuminated portion of the surface for a first flash; detecting a second speckled light intensity pattern of the illuminated portion of the surface for a second flash; extracting motion features of two different types from the detected first and second speckled light intensity patterns; determining a measurement of the relative motion between the optical sensing device and the illuminated surface portion based on a comparison of motion features extracted; wherein before the step of determining a measurement of the relative motion, the method further comprises the step of keeping only pairs of neighbouring motion features including one motion feature of both different types.
    • 描述了一种用于测量表面的照射部分和包括相干光源和光电检测器阵列的光学感测装置之间的相对运动的方法,该方法包括以下步骤:借助于相干光源在确定的梯度下照射 表面部分以确定的闪光速率; 通过光电检测器阵列检测用于第一闪光的表面的被照射部分的斑点光强度图案; 检测所述表面的被照射部分的第二斑点光强度图案用于第二闪光; 从检测到的第一和第二斑点光强图案中提取两种不同类型的运动特征; 基于所提取的运动特征的比较来确定所述光学感测装置和所述照射的表面部分之间的相对运动的测量; 其中在确定所述相对运动的测量的步骤之前,所述方法还包括仅保持包括两种不同类型的一个运动特征的相邻运动特征对的步骤。