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    • 56. 发明授权
    • Line terminating equipment in SDH networks, using forward error
correcting codes
    • SDH网络中的线路终端设备,使用前向纠错码
    • US5574717A
    • 1996-11-12
    • US442145
    • 1995-05-16
    • Masahito TomizawaYoshiaki YamabayashiYukio KobayashiKiyoshi NakagawaKen-ichi Yagisawa
    • Masahito TomizawaYoshiaki YamabayashiYukio KobayashiKiyoshi NakagawaKen-ichi Yagisawa
    • H03M13/00H03M13/15H04J3/14H04Q11/04H04L1/00
    • H04J3/14H03M13/00H03M13/151H04J2203/0089
    • In an optical transmission system applicable to a SDH network, communication between two line terminating equipments is performed in a form of a STM frame composed of a SOH field and a payload, which is determined by CCITT recommendations. The line terminating equipment provides a FEC circuit which is preferably arranged at a location between MSP and MST function blocks. The FEC circuit is designed to perform coding/decoding operations, using a cyclic Hamming code, directly on each AU-4 message derived from the STM frame. Otherwise, the FEC circuit performs operations on each k-bit interleaved AU-4 message (where `k` is an integer larger than 1). Check bits generated by a FEC coding circuit are written into undefined byte areas in a MSOH field, and error correcting is performed at a decoder circuit on the basis of embedded check bits, therefore FEC operations are performed within a multiplex-section layer. A FEC processing circuit is constituted by shift registers each of which is connected by exclusive-or logic so as to execute FEC processing calculation generating a remainder by a generator polynomial. For a FEC code on direct AU-4 message, the FEC processing circuit in parallel configuration for lowering an operational clock rate is determined by a matrix form calculation, which creates an output vector indicating a set of shift registers' data in a future clock timing from an input vector consisting of data stream in message and initial shift registers' values.
    • 在适用于SDH网络的光传输系统中,以由CCITT建议确定的SOH字段和有效载荷构成的STM帧的形式执行两线路终端设备之间的通信。 线路终端设备提供优选地布置在MSP和MST功能块之间的位置的FEC电路。 FEC电路被设计为使用循环汉明码直接在从STM帧导出的每个AU-4消息上执行编码/解码操作。 否则,FEC电路对每个k位交织的AU-4消息(其中'k'是大于1的整数)执行操作。 由FEC编码电路生成的校验位被写入到MSOH字段中的未定义的字节区域中,并且在解码器电路上基于嵌入的校验位执行纠错,因此在多路复用部分层内执行FEC操作。 FEC处理电路由移位寄存器构成,每个移位寄存器通过异或逻辑连接,以执行通过生成多项式生成余数的FEC处理计算。 对于用于直接AU-4消息的FEC码,用于降低操作时钟速率的并行配置的FEC处理电路由矩阵形式计算确定,其形成指示未来时钟定时中的一组移位寄存器数据的输出向量 从由消息中的数据流和初始移位寄存器值组成的输入向量。
    • 57. 发明授权
    • Transporting system for an article
    • 运输系统的文章
    • US5558487A
    • 1996-09-24
    • US371202
    • 1995-01-11
    • Kiyoshi Nakagawa
    • Kiyoshi Nakagawa
    • B65G49/07B25J9/06B25J18/02B65G47/90G11B17/22H01L21/677H01L21/687B65G65/00
    • H01L21/68707Y10S414/13Y10S414/137Y10T74/1888Y10T74/18992Y10T74/20305
    • In an article transporting system, a first linear moving arm and a second linear moving arm are juxtaposed to each other so as to be moved linearly while keeping a parallel positional relationship with each other. First end portions of the linear moving arms are coupled to an article transporting unit through first and second links. A linear drive mechanism is provided for linearly moving the article transporting unit in a direction perpendicular to the moving direction of the linear moving arms by the linear movement of the first and second linear moving arms. The first and second linear moving arms are synchronously linearly moved in opposite directions to each other. In this case, to avoid an unstable posture of the article transporting unit during the movement, a posture maintaining device is provided between one of the first and second linear moving arms and the article transporting unit. It is possible to save a space for the article transporting work by using the two linear moving arms and the link mechanism.
    • 在物品传送系统中,第一线性移动臂和第二线性移动臂彼此并置,以便在保持彼此平行的位置关系的同时被线性地移动。 线性移动臂的第一端部通过第一和第二连杆联接到物品传送单元。 提供一种线性驱动机构,用于通过第一和第二线性移动臂的线性运动来使物品传送单元沿垂直于线性移动臂的移动方向的方向线性移动。 第一和第二线性移动臂彼此相反方向同步地线性移动。 在这种情况下,为了避免运动过程中物品运送单元的姿势不稳定,姿势维持装置设置在第一和第二直线运动臂之间和物品运送单元之间。 通过使用两个直线移动臂和连杆机构,可以节省用于物品输送作业的空间。
    • 59. 发明授权
    • Spun yarn-like high bulky textured yarns and process for producing same
    • 纺纱纱线高笨重变形纱线及其制造方法
    • US4262481A
    • 1981-04-21
    • US13325
    • 1979-02-21
    • Yukio OtakiKazuo UmedaKiyoshi Nakagawa
    • Yukio OtakiKazuo UmedaKiyoshi Nakagawa
    • D02G1/02D02G3/04D02G3/24
    • D02G1/0286Y10S57/908
    • Spun yarn-like high bulky textured polyester yarns comprised of two types of polyester multifilament component yarns A and B and having broken filaments, in which textured yarns there is a difference in length between the component yarns A and B, whereby very high bulkiness is imparted thereto. The individual filaments of the component yarn A have a fineness and an intrinsic viscosity less than those of the component yarns B. The spun yarn-like high bulky textured yarns have satisfactory pilling resistance and frosting resistance.The spun yarn-like high bulky textured yarns can be produced by a process comprising doubling two types of undrawn polyester multifilament yarns having different properties through an intertwisting regulative device and simultaneously draw-texturing the doubled undrawn yarns.
    • 由两种类型的聚酯复丝组分纱线A和B组成并具有断裂的长丝的纱线状高膨松织构的聚酯纱线,其中变形纱线在组分纱线A和B之间的长度差异,由此赋予非常高的膨松度 到此。 组分纱线A的单根细丝的细度和特性粘度比组分纱线B小。短纤维状高膨松变形纱线具有令人满意的起球抗性和耐结霜性。 可以通过包括通过缠结调节装置对具有不同性质的两种类型的未拉伸聚酯复丝纱线进行加倍以及同时拉伸双重未拉伸纱线的方法来制造细纱状高膨松变形纱线。