Method for selection of optical fiber and system for inspection of optical fiber
    22.
    发明授权
    Method for selection of optical fiber and system for inspection of optical fiber 有权
    光纤选择方法及光纤检测系统

    公开(公告)号:US07102739B2

    公开(公告)日:2006-09-05

    申请号:US11184924

    申请日:2005-07-20

    IPC分类号: G01N21/00

    CPC分类号: G01M11/3145

    摘要: An optical fiber inspecting system comprises a waveform measuring unit for measuring an OTDR waveform for an optical fiber and a waveform evaluating unit for evaluating an anomaly within the optical fiber through a use of the measured waveform. The waveform evaluating unit comprises a calculating part and a detecting part. The calculating part calculates the gradient and the amount of change in gradient of the waveform at each time point by means of a gradient calculating section and a gradient change amount calculating section. The detecting part determines whether or not the gradient and the amount of change in gradient are within a defined allowable range of gradient and a defined allowable range of amount of change, respectively, by way of a gradient determining section and a gradient change amount determining section.

    摘要翻译: 光纤检测系统包括用于测量光纤的OTDR波形的波形测量单元和用于通过使用所测量的波形来评估光纤内的异常的波形评估单元。 波形评估单元包括计算部分和检测部分。 计算部分通过梯度计算部分和梯度变化量计算部分计算每个时间点的波形的梯度和梯度变化量。 检测部分通过梯度确定部分和梯度变化量确定部分分别确定坡度和变化量是否分别在规定的倾斜允许范围和变化量的允许范围内 。

    Method for selection of optical fiber and system for inspection of optical fiber
    23.
    发明申请
    Method for selection of optical fiber and system for inspection of optical fiber 有权
    光纤选择方法及光纤检测系统

    公开(公告)号:US20050248751A1

    公开(公告)日:2005-11-10

    申请号:US11184924

    申请日:2005-07-20

    IPC分类号: G01M11/00 G01N21/00

    CPC分类号: G01M11/3145

    摘要: An optical fiber inspecting system 1A comprises a waveform measuring unit 2 for measuring an OTDR waveform for an optical fiber F to be inspected and a waveform evaluating unit 3 for evaluating an anomaly within the optical fiber through a use of the measured waveform. Furthermore, the waveform evaluating unit 3 comprises a calculating part 4 and a detecting part 5. The calculating part 4 calculates the gradient and the amount of change in gradient of the waveform at each time point by means of a gradient calculating section 41 and a gradient change amount calculating section 42. The detecting part 5 determines whether or not the gradient and the amount of change in gradient are within a defined allowable range of gradient and a defined allowable range of amount of change, respectively, by means of a gradient determining section 51 and a gradient change amount determining section 52. This realizes an optical fiber inspecting system, an inspection method and a selecting method, all of which enable to detect reliably an anomaly within an optical fiber through an OTDR waveform.

    摘要翻译: 光纤检查系统1A包括用于测量待检查光纤F的OTDR波形的波形测量单元2和用于通过使用测量波形来评估光纤内的异常的波形评估单元3。 此外,波形评估单元3包括计算部分4和检测部分5.计算部分4通过梯度计算部分41计算每个时间点的波形的梯度和梯度的变化量,梯度 变化量计算部分42.检测部分5通过梯度确定部分确定倾斜度和梯度变化量是否分别在规定的倾斜允许范围和变化量的容许范围内 51和梯度变化量确定部分52.这实现了光纤检测系统,检查方法和选择方法,所有这些都能够通过OTDR波形可靠地检测光纤内的异常。

    Connection unit, optical fiber line unit, optical cable, and optical transmission system
    24.
    发明授权
    Connection unit, optical fiber line unit, optical cable, and optical transmission system 失效
    连接单元,光纤线路单元,光缆和光传输系统

    公开(公告)号:US06840682B2

    公开(公告)日:2005-01-11

    申请号:US10365475

    申请日:2003-02-13

    IPC分类号: G02B6/255 G02B6/26 G02B6/38

    CPC分类号: G02B6/2551 G02B6/266

    摘要: It is an object of this invention to provide a connection unit capable of improving transmission characteristics. The connection unit according to this invention is provided between a plurality of first optical fibers extending from an optical amplifier and a plurality of second optical fibers in an optical cable, and comprises one or more optical components to connect one first optical fiber to one second optical fiber. Each of the optical components includes third and fourth optical fibers that can be connected to one first optical fiber and one second optical fiber with low connection losses, respectively, and a loss adjusting section for adjusting a transmission loss. The transmission loss deviation in a plurality of optical transmission lines is adjusted to 0.005 dB/km or less.

    摘要翻译: 本发明的目的是提供一种能够改善传输特性的连接单元。 根据本发明的连接单元设置在从光放大器和光缆中的多个第二光纤延伸的多个第一光纤之间,并且包括一个或多个光学部件,以将一个第一光纤连接到一个第二光学 纤维。 每个光学部件包括分别连接到一个第一光纤和一个具有低连接损耗的第二光纤的第三和第四光纤,以及用于调整传输损耗的损耗调整部分。 将多个光传输线路的传输损耗偏差调整为0.005dB / km以下。

    Two-dimensional code mark detecting method and apparatus therefor
    26.
    发明授权
    Two-dimensional code mark detecting method and apparatus therefor 失效
    二维码识别检测方法及装置

    公开(公告)号:US5747823A

    公开(公告)日:1998-05-05

    申请号:US694259

    申请日:1996-08-08

    IPC分类号: G06K7/10 G01N21/86

    CPC分类号: G06K7/10831 G06K7/10594

    摘要: A method of and an apparatus for detecting information from a code marking formed on a carrier by illuminating the code marking with illuminating light and detecting an emission from an illuminated position on which the illuminating light is projected. The code marking is a two-dimensional code marking bearing the information in first and second directions perpendicular to each other, and an illuminated area at the illuminated position is of a fine ribbon-like shape having a length greater than a maximum possible width of the code marking in the first direction and smaller than a minimum possible information width in the second direction. Illumination of the code marking is carried out by moving in a direction parallel to the second direction while traversing in the first direction.

    摘要翻译: 一种用于通过用照明光照亮编码标记并检测来自其上投射有照明光的照明位置的发射来从形成在载体上的代码标记中检测信息的方法和装置。 代码标记是在彼此垂直的第一和第二方向上承载信息的二维代码标记,并且在照明位置处的照明区域是具有大于最大可能宽度的长度的细的带状形状 代码标记在第一方向上并且小于第二方向上的最小可能信息宽度。 通过沿与第二方向平行的方向在第一方向上移动来进行代码标记的照明。

    Optical reading apparatus for reading latent image mark
    27.
    发明授权
    Optical reading apparatus for reading latent image mark 失效
    用于读取潜像标记的光学读取装置

    公开(公告)号:US5668363A

    公开(公告)日:1997-09-16

    申请号:US367355

    申请日:1995-01-17

    IPC分类号: G06K7/10 G06K7/12 B42D15/00

    摘要: A high-reliability optical reading apparatus for reading a latent image mark capable of accurately reading the code information of a latent image mark. The optical reading apparatus comprises a light-projecting light member for projecting on a surface of the latent image mark, the light having a wavelength to excite a fluorescent substance contained in the latent image mark having desired information; and a light-receiving member for receiving fluorescence emitted from the surface of the latent image mark. A range in which the latent image mark can be read is formed by setting a point at which the optical axis of the light-projecting member and that of the light-receiving member intersect with each other as a reference. An intersection angle between the two optical axes is preferably in the range of from 10.degree. to 40.degree..

    摘要翻译: PCT No.PCT / JP94 / 00778 Sec。 371日期1995年1月17日 102(e)1995年1月17日PCT PCT 1994年5月13日PCT公布。 出版物WO94 / 27242 日期1994年11月24日用于读取能够准确读取潜像标记的代码信息的潜像标记的高可靠性光学读取装置。 光学读取装置包括用于在潜像标记的表面上突出的光投射光部件,具有激发包含在具有期望信息的潜像标记中的荧光物质的波长的光; 以及用于接收从潜像标记的表面发射的荧光的光接收部件。 可以通过将光投射构件的光轴和受光构件的光轴彼此相交的点设定为基准来形成可以读取潜像标记的范围。 两个光轴之间的交叉角优选在10°至40°的范围内。

    Memory cartridge having stored data protecting function and memory
protecting method
    28.
    发明授权
    Memory cartridge having stored data protecting function and memory protecting method 失效
    具有存储数据保护功能和存储器保护方法的存储卡

    公开(公告)号:US4864542A

    公开(公告)日:1989-09-05

    申请号:US168436

    申请日:1988-03-15

    摘要: A portable memory cartridge includes a mass memory, a data bus, an address bus, control signal lines for carrying signals for making access to the mass memory, a password memory for storing a flag indicating the inhibition of read/write access to the mass memory, a password memory for storing a particular authorized password, and a comparator for comparing an input password with the particular password set previously. Whe the comparison results in coincidence, a control signal required for the access is supplied to the mass memory for enabling the access to the mass memory in data read or write mode or data read and write mode.

    摘要翻译: 便携式存储盒包括大容量存储器,数据总线,地址总线,用于传送用于访问大容量存储器的信号的控制信号线,用于存储指示禁止对大容量存储器进行读/写访问的标志的密码存储器 ,用于存储特定授权密码的密码存储器,以及用于将输入密码与先前设置的特定密码进行比较的比较器。 比较结果一致,将访问所需的控制信号提供给大容量存储器,以使得能够以数据读或写模式或数据读写模式访问大容量存储器。