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    Semiconductor optical amplifier characteristic evaluation method and apparatus
    1.
    发明授权
    Semiconductor optical amplifier characteristic evaluation method and apparatus 失效
    半导体光放大器特性评估方法及装置

    公开(公告)号：US06728025B2

    公开(公告)日：2004-04-27

    申请号：US10263233

    申请日：2002-10-02

    申请人： Katsuaki Magari ,  Toshio Ito ,  Hiromi Oohashi ,  Hiroyuki Kamioka ,  Yasuhiro Suzuki

    发明人： Katsuaki Magari ,  Toshio Ito ,  Hiromi Oohashi ,  Hiroyuki Kamioka ,  Yasuhiro Suzuki

    IPC分类号： H01S300

    CPC分类号： H04B10/0731

    摘要： In an SOA characteristic evaluation method, the current is supplied to an SOA. An optical output generated by the SOA that have received the current is measured. Transmission light obtained by transmitting the optical output through a wavelength filter and/or a polarizer is measured. The characteristic of the SOA is evaluated on the basis of the measurement result of the optical output and the measurement result of the transmission light without using an optical input to the SOA. An SOA characteristic evaluation apparatus is also disclosed.

    摘要翻译： 在SOA特性评估方法中，将电流提供给SOA。 测量已经接收到电流的由SOA生成的光输出。 测量通过波长滤波器和/或偏振器透射光输出而获得的透射光。 基于光输出的测量结果和传输光的测量结果，不对SOA进行光输入来评估SOA的特性。 还公开了SOA特性评估装置。

    Polarization mode dispersion compensating device using optical XOR circuit
    2.
    发明授权
    Polarization mode dispersion compensating device using optical XOR circuit 失效
    偏振模色散补偿装置采用光学异或电路

    公开(公告)号：US06775426B2

    公开(公告)日：2004-08-10

    申请号：US10207357

    申请日：2002-07-29

    申请人： Toshio Ito ,  Rieko Sato ,  Yasuhiro Suzuki

    发明人： Toshio Ito ,  Rieko Sato ,  Yasuhiro Suzuki

    IPC分类号： G02B600

    CPC分类号： H04B10/2569

    摘要： A polarization mode dispersion compensating device is formed by a polarization mode dispersion equalizer, a polarization component splitting unit for splitting a part of the polarization mode dispersion compensated optical signal into the TE polarization component and the TM polarization component, an optical XOR circuit for carrying out an optical XOR operation on the TE polarization component and the TM polarization component, and a control system for controlling the polarization mode dispersion equalizer such that the logical operation result outputted by the optical XOR circuit becomes “0”.

    摘要翻译： 偏振模色散补偿装置由偏振模色散均衡器形成，偏振分量分割单元用于将偏振模色散补偿光信号的一部分分离为TE偏振分量和TM偏振分量，用于执行 对TE偏振分量和TM偏振分量进行光学异或运算，以及用于控制偏振模色散均衡器的控制系统，使得由光学异或电路输出的逻辑运算结果变为“0”。

    ENCODING DEVICE, DECODING DEVICE, ENCODING/DECODING DEVICE, AND RECORDING/REPRODUCING DEVICE
    3.
    发明申请
    ENCODING DEVICE, DECODING DEVICE, ENCODING/DECODING DEVICE, AND RECORDING/REPRODUCING DEVICE 失效
    编码设备，解码设备，编码/解码设备以及记录/再现设备

    公开(公告)号：US20090199073A1

    公开(公告)日：2009-08-06

    申请号：US12276958

    申请日：2008-11-24

    申请人： Toshikazu Kanaoka ,  Toshio Ito

    发明人： Toshikazu Kanaoka ,  Toshio Ito

    IPC分类号： H03M13/27 ,  G06F11/10

    CPC分类号： H03M13/2927 ,  G11B20/1833 ,  G11B20/1866 ,  G11B2020/1836 ,  G11B2020/1843 ,  G11B2020/185 ,  G11B2220/2516 ,  G11B2220/2537 ,  H03M13/098 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/271 ,  H03M13/2721 ,  H03M13/2778 ,  H03M13/2906 ,  H03M13/2918 ,  H03M13/2921 ,  H03M13/293 ,  H03M13/2957

    摘要： An error correction device error corrects without increasing in circuit scale. An encoder, includes: a first ECC encoder which interleaves a data string into n (n≧2) blocks of data strings at every m (m≧2) bits, and adds the error correction code parity; a parity encoder which creates a parity bit at every plurality of bits of the error correction code word, and adds the parity bit to said error correction code word; and a second ECC encoder, which generates a second error correction encoding, which is a linear encoding using iterative decoding. Concatenated type encoded data, where a parity bit is added to every plurality of bits, is created, so an increase of circuit scale can be prevented even if a data string is interleaved into a plurality of blocks and error correction code parity is generated.

    摘要翻译： 错误纠正装置的错误在电路规模上没有增加。 一种编码器，包括：第一ECC编码器，每m（m> = 2）个比特将数据串交织成n（n> = 2）个数据串，并将纠错码奇偶校验相加; 奇偶校验编码器，其在所述纠错码字的每多个位产生奇偶校验位，并将所述奇偶校验位加到所述纠错码字; 以及第二ECC编码器，其生成使用迭代解码的线性编码的第二纠错编码。 创建了对每个多个比特添加奇偶校验位的级联型编码数据，因此即使将数据串交错为多个块并产生纠错码奇偶校验，也可以防止电路规模的增加。

    Encoder and decoder using run-length-limited code
    4.
    发明申请
    Encoder and decoder using run-length-limited code 失效
    编码器和解码器使用运行长度限制代码

    公开(公告)号：US20060250286A1

    公开(公告)日：2006-11-09

    申请号：US11484003

    申请日：2006-07-10

    申请人： Masaru Sawada ,  Toshio Ito ,  Toshihiko Morita

    发明人： Masaru Sawada ,  Toshio Ito ,  Toshihiko Morita

    IPC分类号： H03M7/12

    CPC分类号： H03M5/145

    摘要： When a zero run, which violating G constraint of a run-length-limited (RLL) code, is detected from the data stored in a first input register 1111 and a second input register 1112, bits before and after the zero run is transferred to a temporary register 1150 via a bus for zero run removal 1130 to be combined to each other. Thus, by effectively using the mechanism of bus transfer, a circuit can be simplified, thereby realizing a small circuit.

    摘要翻译： 当从存储在第一输入寄存器1111和第二输入寄存器1112中的数据检测违反游程长度限制（RLL）代码的G约束的零运行时，将零运行之前和之后的位传送到 一个临时寄存器1150通过总线进行零运行移除1130以彼此组合。 因此，通过有效地利用总线传输的机制，可以简化电路，从而实现小电路。

    Encoder and decoder
    5.
    发明申请
    Encoder and decoder 有权
    编码器和解码器

    公开(公告)号：US20060220928A1

    公开(公告)日：2006-10-05

    申请号：US11377124

    申请日：2006-03-16

    申请人： Toshio Ito ,  Masaru Sawada ,  Toshihiko Morita

    发明人： Toshio Ito ,  Masaru Sawada ,  Toshihiko Morita

    IPC分类号： H03M7/00

    CPC分类号： H03M5/145 ,  G11B20/1866

    摘要： An encoded-bit-string generating unit generates a bit string encoded by scrambling an input bit string. A direct-current-component evaluating unit selects a bit string having a predetermined width in the bit string generated by the encoded-bit-string generating unit, while shifting bits one by one, and evaluates the direct-current component in the selected bit string. A bit-string extracting unit extracts a bit string with suppressed direct-current component, based on a result of an evaluation by the direct-current-component evaluating unit.

    摘要翻译： 编码比特串生成单元生成通过对输入比特串进行加扰而编码的比特串。 直流分量评估单元在逐位移位时，选择由编码比特串生成单元生成的比特串中具有预定宽度的比特串，并且评估所选择的比特串中的直流分量 。 基于直流分量评估单元的评价结果​​，位串提取单元提取具有抑制的直流分量的比特串。

    Recording and reproducing apparatus
    6.
    发明申请
    Recording and reproducing apparatus 有权
    记录和再现设备

    公开(公告)号：US20050225458A1

    公开(公告)日：2005-10-13

    申请号：US10982610

    申请日：2004-11-05

    申请人： Toshio Ito ,  Masaru Sawada ,  Toshihiko Morita ,  Takao Sugawara

    发明人： Toshio Ito ,  Masaru Sawada ,  Toshihiko Morita ,  Takao Sugawara

    IPC分类号： G11B20/10 ,  G11B5/09 ,  G11B20/14 ,  G11B20/18 ,  H03M5/14 ,  H03M7/14 ,  H03M7/00

    CPC分类号： H03M5/145 ,  G11B20/1426

    摘要： A recording and reproducing apparatus includes an RLL encoder that encodes an information bit string to a code bit string and a RLL decoder that decodes the code bit string to the information bit string. The RLL encoder encodes the information bit string to the code bit string of a run-length-limited code at a high encoding rate satisfying a plurality of conditions of constraint regarding a string of successive zeros. The RLL decoder decodes the code bit string encoded by the RLL encoder to the information bit string.

    摘要翻译： 记录和再现装置包括将信息位串编码为码位串的RLL编码器和将码位串解码为信息位串的RLL解码器。 RLL编码器以满足关于连续零串的多个约束条件的高编码率将信息位串编码为游程长度受限码的码位串。 RLL解码器将由RLL编码器编码的码位串解码为信息位串。

    Hollow cathode lamp
    7.
    发明授权
    Hollow cathode lamp 失效

    公开(公告)号：US06548958B2

    公开(公告)日：2003-04-15

    申请号：US09933904

    申请日：2001-08-22

    申请人： Yuji Shimazu ,  Toshio Ito ,  Jyunichi Imakama

    发明人： Yuji Shimazu ,  Toshio Ito ,  Jyunichi Imakama

    IPC分类号： H01J1706

    CPC分类号： H01J61/09 ,  H01J61/64 ,  H01J61/68

    摘要： In a hollow cathode lamp comprising, in a bulb having a light exit port, a hollow cathode and an anode opposed to the light exit port, which comprises a tubular hood having a tubular shape, having one open end connected to the hollow cathode, having another open end opposed to the light exit port, and having an opening formed in a peripheral side face thereof, and an electron supply disposed at a position to front on the opening, discharge making use of thermoelectrons is implemented between the electron supply and the anode.

    Indexing device
    8.
    发明授权
    Indexing device 失效
    索引设备

    公开(公告)号：US5481944A

    公开(公告)日：1996-01-09

    申请号：US217250

    申请日：1994-03-24

    申请人： Tetsuya Oketani ,  Toshio Ito

    发明人： Tetsuya Oketani ,  Toshio Ito

    IPC分类号： B23Q16/02 ,  B23Q16/06 ,  F16H1/16 ,  F16H35/00 ,  F16H57/037 ,  F16H57/038 ,  F16H57/039

    CPC分类号： B23Q16/065 ,  B23Q2230/002 ,  Y10T74/1418 ,  Y10T74/1488

    摘要： An indexing device comprises an indexing table fixed to a table shaft rotatably supported on a body structure. A worm shaft is rotatably supported on the body structure and has a worm formed thereon. An indexing gear is fixed coaxially to the indexing table. The indexing device has a rotation correction device for stopping the rotation of the worm shaft prior to the indexing operation of the indexing table. The indexing device further has a positioning device for operating, after the worm shaft has been thus stopped, to impart a rotational torque to the indexing table and to cause a gear tooth face of the indexing gear to press against and hold a worm tooth face of the worm, whereby the precision of positioning of the indexing table is improved.

    摘要翻译： 分度装置包括固定到可旋转地支撑在主体结构上的工作台轴的分度台。 蜗杆轴可旋转地支撑在主体结构上并形成有蜗杆。 分度齿轮与分度台同轴固定。 分度装置具有旋转校正装置，用于在分度台的分度操作之前停止蜗杆轴的旋转。 分度装置还具有定位装置，其在蜗杆轴已经停止之后进行操作，以将旋转扭矩赋予分度台，并使分度齿轮的齿轮齿面压紧并保持蜗杆齿面 蜗杆，从而提高了分度台的定位精度。