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    • 4. 发明申请
    • FREE-SPACE OPTICAL RECEIVING APPARATUS AND ELECTRONIC DEVICE EQUIPPED WITH THAT APPARATUS
    • 免费空间光接收装置和配备设备的电子设备
    • US20090028572A1
    • 2009-01-29
    • US12168523
    • 2008-07-07
    • Nobuhisa WATANABE
    • Nobuhisa WATANABE
    • H04B10/06
    • G08C23/04H04B10/1141
    • A free-space optical receiving apparatus in one embodiment of the invention is provided with: a signal receiving light-sensitive element that converts an infrared signal to an electric current signal; a current-voltage conversion circuit that converts the electric current signal to a voltage signal; a shared processing circuit that amplifies this voltage signal, performs digital conversion on the voltage signal, and outputs a digital signal; and a mode conversion circuit that switches the shared processing circuit to a remote control mode when an infrared signal is received, and switches the shared processing circuit to an IrSimple mode when an IrSimple signal is received. The shared processing circuit converts the remote control signal to a digital signal when in the remote control mode, and converts the IrSimple signal to a digital signal when in the IrSimple mode.
    • 在本发明的一个实施例中的自由空间光接收装置具有:将红外信号转换为电流信号的信号接收光敏元件; 将电流信号转换为电压信号的电流 - 电压转换电路; 放大该电压信号的共享处理电路对电压信号进行数字转换,并输出数字信号; 以及当接收到红外信号时将共享处理电路切换到遥控模式的模式转换电路,并且当接收到IrSimple信号时,将共享处理电路切换为IrSimple模式。 当处于远程控制模式时,共享处理电路将遥控信号转换为数字信号,并在IrSimple模式下将IrSimple信号转换为数字信号。
    • 5. 发明授权
    • Optical two-dimensional velocity and/or movement detector
    • 光学二维速度和/或运动检测器
    • US07317538B2
    • 2008-01-08
    • US11028610
    • 2005-01-05
    • Hideo WadaNobuhisa WatanabeTakayuki Taminaga
    • Hideo WadaNobuhisa WatanabeTakayuki Taminaga
    • G01B11/14
    • G01P3/366G01S17/58
    • In an optical movement information detector, light emitted from a laser diode (1) is split into a first beam (10), a second beam (11) and a third beam (12) by beam splitters (2a, 2b). The first, second and third beams are converged by a condenser lens (4) upon a surface of an object to be measured (5) to form a beam spot (13) thereon. Diffused light from the beam spot (13) is received by a photodiode (6) and an output signal of the photodiode (6) is processed by a signal processing circuit (20) including an analog-digital converter (8) and a Fourier transforming unit (9). A detecting section (21) obtains, for example, a moving velocity and a moving direction of the object based on spectrum peak frequencies obtained by the Fourier transform.
    • 在光学运动信息检测器中,从激光二极管(1)发射的光通过分束器(2a,2b)分成第一光束(10),第二光束(11)和第三光束(12)。 第一,第二和第三光束由聚光透镜(4)会聚在待测物体(5)的表面上,以在其上形成光斑(13)。 来自光束点(13)的漫射光由光电二极管(6)接收,并且光电二极管(6)的输出信号由包括模数转换器(8)的信号处理电路(20)和傅立叶变换 单位(9)。 检测部(21)基于通过傅里叶变换获得的频谱峰值频率,获得例如物体的移动速度和移动方向。