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公开(公告)号:US07557795B2
公开(公告)日:2009-07-07
申请号:US11170182
申请日:2005-06-30
申请人: Yuan Kong , Craig S. Ranta , Tianpeng Zhao , Hai Ming , Jianping Xie , Jun Xu , Deyong He
发明人: Yuan Kong , Craig S. Ranta , Tianpeng Zhao , Hai Ming , Jianping Xie , Jun Xu , Deyong He
IPC分类号: G09G5/00
CPC分类号: G06F3/0312 , G01S7/4916 , G01S17/58 , G06F3/03543
摘要: An input device encodes motion using a laser self-mixing velocimeter. The laser beam is directed at a disk or other moving member. As light from that beam is reflected back into the emitting cavity of the laser, the beam power output fluctuates because of the self-mixing effect and generates a beat signal. The beat signal frequency is used to determine the speed of the member's motion. The direction of motion is also determined based on the beat signal. A difference frequency analog phase locked loop filters the beat signal. A zero-point control disables motion detection when the average beat signal amplitude falls below a threshold. A triangle modulator generates a triangle wave for the laser bias current, with the triangle wave frequency being a submultiple of the beat signal frequency.
摘要翻译: 输入设备使用激光自混式速度计对运动进行编码。 激光束被引导到盘或其他移动构件。 当来自该光束的光被反射回到激光器的发射腔中时,光束功率输出由于自混合效应而波动并产生拍频信号。 拍频信号用于确定会员运动的速度。 也可以基于拍子信号来确定运动方向。 差频模拟锁相环对拍频信号进行滤波。 零点控制在平均差拍信号幅度低于阈值时禁止运动检测。 三角形调制器产生激光偏置电流的三角波,三角波频率是拍频信号频率的一个倍数。
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公开(公告)号:US07534988B2
公开(公告)日:2009-05-19
申请号:US11268937
申请日:2005-11-08
申请人: Yuan Kong , Tianpeng Zhao , Hai Ming , Jianping Xie , Jun Xu , Deyong He , Huaqiao Gui , Liang Lv , Craig S. Ranta
发明人: Yuan Kong , Tianpeng Zhao , Hai Ming , Jianping Xie , Jun Xu , Deyong He , Huaqiao Gui , Liang Lv , Craig S. Ranta
IPC分类号: G06F3/033
CPC分类号: G06F3/0421
摘要: Optical tracking systems, method, and devices are described in which optical components detect light within a substantially planar region adjacent to a user device. Tracking logic may receive signals output by the optical components and determine coordinates associated with a movement of a pointing object through the substantially planar region. The tracking logic may then provide for translation of the coordinates into an action on a display, such as, for example, a movement of a cursor or other icon on the display.
摘要翻译: 光学跟踪系统,方法和装置被描述,其中光学部件检测与用户装置相邻的基本平坦的区域内的光。 跟踪逻辑可以接收由光学部件输出的信号,并且确定与通过基本平坦的区域的指向物体的运动相关联的坐标。 然后,跟踪逻辑可以提供将坐标转换为显示器上的动作,例如光标或其他图标在显示器上的移动。
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公开(公告)号:US07283214B2
公开(公告)日:2007-10-16
申请号:US11249682
申请日:2005-10-14
申请人: Jun Xu , Tianpeng Zhao , Hai Ming , Jianping Xie , Deyong He , Liang Lv , Huaqiao Gui , Bo Yi , Lei Guo , Craig S. Ranta , Yuan Kong
发明人: Jun Xu , Tianpeng Zhao , Hai Ming , Jianping Xie , Deyong He , Liang Lv , Huaqiao Gui , Bo Yi , Lei Guo , Craig S. Ranta , Yuan Kong
IPC分类号: G01C3/08
CPC分类号: G01C3/08 , G01S7/491 , G01S7/4916 , G01S17/325 , H01S5/0028 , H01S5/06213 , H01S5/183
摘要: A laser range finder includes a laser and a photosensitive element. The laser projects a beam onto a target surface. A backscattered portion of the laser beam returns to the laser from the target surface and enters the laser emitting cavity. Variations in laser output power are detected by the photosensitive element, which provides a “beat” signal to a frequency detection circuit. The frequency detection circuit includes a difference frequency analog phase locked loop (DFAPLL) providing a purified form of the beat signal. The frequency of the purified beat signal is determined and used to calculate distance to the target surface.
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公开(公告)号:US20070103440A1
公开(公告)日:2007-05-10
申请号:US11268937
申请日:2005-11-08
申请人: Yuan Kong , Tianpeng Zhao , Hai Ming , Jianping Xie , Jun Xu , Deyong He , Huaqiao Gui , Liang Lv , Craig Ranta
发明人: Yuan Kong , Tianpeng Zhao , Hai Ming , Jianping Xie , Jun Xu , Deyong He , Huaqiao Gui , Liang Lv , Craig Ranta
IPC分类号: G09G5/08
CPC分类号: G06F3/0421
摘要: Optical tracking systems, method, and devices are described in which optical components detect light within a substantially planar region adjacent to a user device. Tracking logic may receive signals output by the optical components and determine coordinates associated with a movement of a pointing object through the substantially planar region. The tracking logic may then provide for translation of the coordinates into an action on a display, such as, for example, a movement of a cursor or other icon on the display.
摘要翻译: 光学跟踪系统,方法和装置被描述,其中光学部件检测与用户装置相邻的基本平坦的区域内的光。 跟踪逻辑可以接收由光学部件输出的信号,并且确定与通过基本平坦的区域的指向物体的运动相关联的坐标。 然后,跟踪逻辑可以提供将坐标转换为显示器上的动作,例如光标或其他图标在显示器上的移动。
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公开(公告)号:US20070091295A1
公开(公告)日:2007-04-26
申请号:US11249682
申请日:2005-10-14
申请人: Jun Xu , Tianpeng Zhao , Hai Ming , Jianping Xie , Deyong He , Liang Lv , Huaqiao Gui , Bo Yi , Lei Guo , Craig Ranta , Yuan Kong
发明人: Jun Xu , Tianpeng Zhao , Hai Ming , Jianping Xie , Deyong He , Liang Lv , Huaqiao Gui , Bo Yi , Lei Guo , Craig Ranta , Yuan Kong
IPC分类号: G01C3/08
CPC分类号: G01C3/08 , G01S7/491 , G01S7/4916 , G01S17/325 , H01S5/0028 , H01S5/06213 , H01S5/183
摘要: A laser range finder includes a laser and a photosensitive element. The laser projects a beam onto a target surface. A backscattered portion of the laser beam returns to the laser from the target surface and enters the laser emitting cavity. Variations in laser output power are detected by the photosensitive element, which provides a “beat” signal to a frequency detection circuit. The frequency detection circuit includes a difference frequency analog phase locked loop (DFAPLL) providing a purified form of the beat signal. The frequency of the purified beat signal is determined and used to calculate distance to the target surface.
摘要翻译: 激光测距仪包括激光和感光元件。 激光将光束投射到目标表面上。 激光束的反向散射部分从目标表面返回到激光器并进入激光发射腔。 激光输出功率的变化由感光元件检测,其向频率检测电路提供“拍频”信号。 频率检测电路包括提供拍频信号的净化形式的差频模拟锁相环(DFAPLL)。 确定纯化的搏动信号的频率并用于计算到目标表面的距离。
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公开(公告)号:US20140205302A1
公开(公告)日:2014-07-24
申请号:US13985565
申请日:2013-03-08
申请人: Wei Chen , Shuang Wang , Zhenqiang Yin , Dajun Huang , Yang Yang , Zheng Zhou , Deyong He , Yuhu Li , Zhengfu Han , Yonggang Wang , Guangcan Guo
发明人: Wei Chen , Shuang Wang , Zhenqiang Yin , Dajun Huang , Yang Yang , Zheng Zhou , Deyong He , Yuhu Li , Zhengfu Han , Yonggang Wang , Guangcan Guo
IPC分类号: H04B10/556
CPC分类号: H04B10/5561 , H04B10/70 , H04L9/0852
摘要: The present invention utilizes a high-speed serial data transceiver to generate two high-speed electric pulse signals. After passing through a gain network, the signals are used for driving an electro-optic phase modulator (PM) so as to realize phase modulation of photon signals. The present invention may directly use a high-speed digital signal to realize a four-phase modulation function needed by the BB84 quantum key distribution protocol without using a digital to analog converter or an analog switch. This can prevent modulation rate from being restricted by links including digital-to-analogue conversion, switching of the analogue and the like. A dual-electrode electro-optic phase modulator scheme can also effectively reduce requirements for amplitude of a modulation driving signal, thus facilitating realization of high-speed phase modulation, which meets requirements of quantum key distribution.
摘要翻译: 本发明利用高速串行数据收发器来产生两个高速电脉冲信号。 通过增益网络后,信号用于驱动电光相位调制器(PM),以实现光信号的相位调制。 本发明可以直接使用高速数字信号来实现BB84量子密钥分发协议所需的四相调制功能,而不使用数模转换器或模拟开关。 这可以防止调制速率被包括数模转换,模拟转换等的链路所限制。 双电极电光相位调制器方案还可以有效降低对调制驱动信号幅度的要求,从而有助于实现高速相位调制,满足量子密钥分配的要求。
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