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    • 1. 发明授权
    • Motion and simple gesture detection using multiple photodetector segments
    • 运动和简单的手势检测使用多个光电检测器段
    • US08907264B2
    • 2014-12-09
    • US13523777
    • 2012-06-14
    • Allen M. Earman
    • Allen M. Earman
    • G06M7/00
    • G06K9/00355G06F3/0416G06F3/0421G06F3/04883
    • An optoelectronics apparatus selectively drives a light source, and includes four electrically isolated photodetector (PD) segments that detect light that has reflected off an object. Each of the four PD segments produces a corresponding signal, referred to as signals A, B, C and D, indicative of the light detected by the respective PD segment. Circuitry is used to produce a first motion signal indicative of a sum of the signals A plus B minus a sum of the signals C plus D, i.e., the first motion signal is indicative of (A+B)−(C+D). Further circuitry produces a second motion signal indicative of (B+C)−(A+D). Additional circuitry produces a signal and/or data that is indicative of a direction and/or rate of motion of an object, in dependence on the first and second motion signals.
    • 光电子装置选择性地驱动光源,并且包括四个电隔离光电检测器(PD)段,其检测已经从物体反射的光。 四个PD段中的每一个产生相应的信号,称为信号A,B,C和D,指示由相应的PD段检测到的光。 电路用于产生指示信号A加B和总和的第一运动信号减去信号C plus D的和,即第一运动信号表示(A + B) - (C + D)。 另外的电路产生指示(B + C) - (A + D)的第二运动信号。 附加电路根据第一和第二运动信号产生指示对象的方向和/或运动速率的信号和/或数据。
    • 2. 发明申请
    • MOTION AND SIMPLE GESTURE DETECTION USING MULTIPLE PHOTODETECTOR SEGMENTS
    • 运动和简单的手势检测使用多个光电子部分
    • US20130334398A1
    • 2013-12-19
    • US13523777
    • 2012-06-14
    • Allen M. Earman
    • Allen M. Earman
    • G01C21/00
    • G06K9/00355G06F3/0416G06F3/0421G06F3/04883
    • An optoelectronics apparatus selectively drives a light source, and includes four electrically isolated photodetector (PD) segments that detect light that has reflected off an object. Each of the four PD segments produces a corresponding signal, referred to as signals A, B, C and D, indicative of the light detected by the respective PD segment. Circuitry is used to produce a first motion signal indicative of a sum of the signals A plus B minus a sum of the signals C plus D, i.e., the first motion signal is indicative of (A+B)−(C+D). Further circuitry produces a second motion signal indicative of (B+C)−(A+D). Additional circuitry produces a signal and/or data that is indicative of a direction and/or rate of motion of an object, in dependence on the first and second motion signals.
    • 光电子装置选择性地驱动光源,并且包括四个电隔离光电检测器(PD)段,其检测已经从物体反射的光。 四个PD段中的每一个产生相应的信号,称为信号A,B,C和D,指示由相应的PD段检测到的光。 电路用于产生指示信号A加B和总和的第一运动信号减去信号C plus D的和,即第一运动信号表示(A + B) - (C + D)。 另外的电路产生指示(B + C) - (A + D)的第二运动信号。 附加电路根据第一和第二运动信号产生指示对象的方向和/或运动速率的信号和/或数据。
    • 4. 发明授权
    • System for recording data on spiral track
    • 在螺旋轨道上记录数据的系统
    • US4594701A
    • 1986-06-10
    • US547039
    • 1983-10-31
    • Allen M. EarmanJames Y. Higashi
    • Allen M. EarmanJames Y. Higashi
    • G11B7/0045G11B7/085G11B19/02G11B27/034G11B27/30G11B7/00
    • G11B7/08517G11B19/02G11B27/034G11B27/3027G11B7/0045G11B2220/20G11B2220/218
    • An apparatus and method are disclosed for piecemeal recording of data on an optical disc using a spiral track format without the necessity of leaving a guard band between recordings or even providing a leader on the subsequently recorded track. A new recording is added to the end of a previously recorded track by first playing back the previous track. The tracking servo is locked to the data track and the translation stage motion is adjusted to match the spiral rate of the track. As the end of the previous track is approached, the translation stage drive is switched to a constant dc drive, the tracking servo is disabled, the tracking mirror is electronically locked to a nominal position, and the new recording begins. This operation may be repeated for each new data file to be recorded in piecemeal fashion.
    • 公开了一种用于使用螺旋轨道格式在光盘上片刻记录数据的装置和方法,而不需要在记录之间留下保护带,或者甚至在随后记录的轨道上提供引导。 首先播放先前的曲目,将新记录添加到先前记录的曲目的末尾。 跟踪伺服器被锁定到数据轨道,并且调整平移台运动以匹配轨道的螺旋速率。 随着前一轨道的结束,平移级驱动器切换到恒定直流驱动,跟踪伺服被禁用,跟踪镜被电子锁定到标称位置,新记录开始。 可以对每个新的数据文件重复该操作以便以零碎的方式记录。