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    • 2. 发明授权
    • Memory updating system for field device
    • 现场设备的内存更新系统
    • US07124239B2
    • 2006-10-17
    • US11006851
    • 2004-12-08
    • Yoji SaitoSeiichiro TakahashiSatoru OchiaiMasaaki Nikkuni
    • Yoji SaitoSeiichiro TakahashiSatoru OchiaiMasaaki Nikkuni
    • G06F12/12G06F13/00G06F9/44G05B15/00G05B19/42
    • G05B19/0426G05B2219/23314G05B2219/25428
    • A memory updating system for a field device involves a fieldbus, one or more field devices that incorporate a nonvolatile memory and are connected to the fieldbus, a host system that is directly or indirectly connected to the fieldbus and transmits an updating instruction and updating data to one of the field devices in order to update the nonvolatile memory of the field device, and a current control circuit that controls a current provided from the fieldbus. The current control circuit increases the current provided from the fieldbus to a value greater than a normal value before the field device erases data stored in the nonvolatile memory, and returns the current provided from the fieldbus to the normal value after the field device completes the erasing of the data stored in the nonvolatile memory.
    • 用于现场设备的存储器更新系统涉及现场总线,一个或多个现场设备,其包含非易失性存储器并连接到现场总线,直接或间接连接到现场总线的主机系统,并将更新指令和更新数据发送到 用于更新现场设备的非易失性存储器的现场设备之一以及控制从现场总线提供的电流的电流控制电路。 在现场设备擦除存储在非易失性存储器中的数据之前,电流控制电路将从现场总线提供的电流增加到大于正常值的值,并且在现场设备完成擦除之后将从现场总线提供的电流返回到正常值 存储在非易失性存储器中的数据。
    • 9. 发明授权
    • Optical pickup device
    • 光学拾取装置
    • US08270280B2
    • 2012-09-18
    • US12890777
    • 2010-09-27
    • Kenji NagatomiSeiichiro Takahashi
    • Kenji NagatomiSeiichiro Takahashi
    • G11B7/135
    • G11B7/1353G11B7/0909G11B7/1275G11B7/131G11B7/133G11B7/1378
    • An optical pickup device is provided with a spectral element which imparts diffraction in such a manner that four light fluxes of the first laser light are separated from each other, when a light flux of the first laser light and a light flux of the second laser light reflected on a recording medium having laminated recording layers and servo layers are divided into four by a first straight line in parallel to a converging direction by an astigmatism element, and a second straight line perpendicular to the first straight line, and that the four light fluxes of the first laser light propagate on an outer side than the light flux of the second laser light; and a photodetector including a first sensor group which receives the first laser light, and a second sensor group which receives the second laser light.
    • 光拾取装置具有光谱元件,该光谱元件以第一激光的四个光束彼此分离的方式赋予衍射,当第一激光的光束和第二激光的光束 在具有层叠记录层和伺服层的记录介质上反射的第一直线与通过像散元件的会聚方向平行的第一直线和垂直于第一直线的第二直线分成四个,并且四个光束 所述第一激光在比所述第二激光的光束的外侧传播; 以及光电检测器,其包括接收第一激光的第一传感器组和接收第二激光的第二传感器组。