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11. 发明授权

US06744958B2 Apparatus and method of compensating for wavelength dispersion of optical transmission line 有权
标题翻译：补偿光传输线波长色散的装置和方法
公开(公告)号：US06744958B2
公开(公告)日：2004-06-01
申请号：US09753573
申请日：2001-01-04
申请人： Shinya Inagaki , Hisashi Takamatsu , Kazuo Yamane , Takashi Tsuda
发明人： Shinya Inagaki , Hisashi Takamatsu , Kazuo Yamane , Takashi Tsuda
IPC分类号： G02B602
CPC分类号： G02B6/29377 , G02B6/29358 , G02B6/29374 , G02B6/29394 , G02B6/4215 , H04B10/25133
摘要： Both wavelength dispersion and a dispersion slope of a line fiber are simultaneously compensated for by combining two types of dispersion compensators having different characteristics.
摘要翻译：通过组合具有不同特性的两种类型的色散补偿器来同时补偿线光纤的波长色散和色散斜率。

12. 发明授权

US4803384A Pulse amplifier suitable for use in the semiconductor laser driving device 失效
标题翻译：脉冲放大器适用于半导体激光驱动装置
公开(公告)号：US4803384A
公开(公告)日：1989-02-07
申请号：US921110
申请日：1986-10-21
申请人： Kazuo Yamane , Masakazu Mori , Takashi Tsuda , Yoshinori Ohkuma , Kazuhiro Suzuki
发明人： Kazuo Yamane , Masakazu Mori , Takashi Tsuda , Yoshinori Ohkuma , Kazuhiro Suzuki
IPC分类号： H01S5/042 , H01S5/062 , H01S5/0683 , H03K5/02 , H03K5/08 , G06G7/12 , H01S3/00 , H03L5/00
CPC分类号： H01S5/06216 , H01S5/06835 , H03K5/023 , H03K5/086 , H01S5/0428
摘要： A semiconductor laser driving device using FET's as a positive element in a bias current supply circuit and a pulse current supply circuit, and having compensating circuits for compensating differences in the characteristics of the FET's and a laser diode used in the driving device. Also a pulse amplifier suitable for use as the pulse current supply circuit in the semiconductor driving device, which circuit cuts off a pulse top side portion and a pulse base side portion of an input pulse with respect to a mesial point of the input pulse to obtain an output pulse having a desired pulse amplitude in response to a control signal, without varying a pulse width.

13. 发明授权

US07397981B2 Apparatus and method of compensating for wavelength dispersion of optical transmission line 有权
标题翻译：补偿光传输线波长色散的装置和方法
公开(公告)号：US07397981B2
公开(公告)日：2008-07-08
申请号：US10823634
申请日：2004-04-14
申请人： Shinya Inagaki , Hisashi Takamatsu , Kazuo Yamane , Takashi Tsuda
发明人： Shinya Inagaki , Hisashi Takamatsu , Kazuo Yamane , Takashi Tsuda
IPC分类号： G02B6/26
CPC分类号： G02B6/29377 , G02B6/29358 , G02B6/29374 , G02B6/29394 , G02B6/4215 , H04B10/25133
摘要： Both wavelength dispersion and a dispersion slope of a line fiber are simultaneously compensated for by combining two types of dispersion compensators having different characteristics.
摘要翻译：通过组合具有不同特性的两种类型的色散补偿器来同时补偿线光纤的波长色散和色散斜率。

14. 发明授权

US4765735A Method of measuring a mode partition characteristics of a laser diode and an apparatus of the same 失效
标题翻译：测量激光二极管的模式分区特性及其装置的方法
公开(公告)号：US4765735A
公开(公告)日：1988-08-23
申请号：US21717
申请日：1987-03-04
申请人： Masakazu Mori , Takashi Tsuda , Kazuo Yamane
发明人： Masakazu Mori , Takashi Tsuda , Kazuo Yamane
IPC分类号： H04B10/00 , H01S5/00 , H01S5/042 , H04B10/07 , H04B10/2513 , G01J1/00
CPC分类号： H01S5/0014
摘要： An apparatus and a method for measuring a mode partition characteristics of laser diode with so-called a k-value (k factor), in which the PN (Pseudo Noise) pulse pattern is used for modulation of laser diode to be measured on the occasion of measuring various parameters required for calculation of the k value.
摘要翻译：一种用于测量具有所谓k值（k因子）的激光二极管的模式分区特性的装置和方法，其中PN（伪噪声）脉冲模式用于当前测量的激光二极管的调制测量k值计算所需的各种参数。

15. 发明授权

US06839160B2 Method of activating optical communication system, channel increasing/decreasing method, and computer-readable recording medium 有权
标题翻译：光通信系统的激活方法，信道增减方法以及计算机可读介质
公开(公告)号：US06839160B2
公开(公告)日：2005-01-04
申请号：US10132326
申请日：2002-04-26
申请人： Takashi Tsuda , Kazuo Yamane , Makoto Murakami , Tooru Shima , Tooru Matsumoto , Hiroyuki Iwaki , Kazuto Imai
发明人： Takashi Tsuda , Kazuo Yamane , Makoto Murakami , Tooru Shima , Tooru Matsumoto , Hiroyuki Iwaki , Kazuto Imai
IPC分类号： H04B10/07 , H04B10/29 , H04B10/293 , H04B10/296 , H04B10/564 , H04B10/572 , H04J14/02 , G02F1/33 , H01S3/00 , H04B10/12
CPC分类号： H04J14/0221 , H04B10/2942 , H04B2210/258 , H04J14/021 , H04J14/0213
摘要： The invention relates to a method of activating an optical communication system comprising a plurality of optical amplifiers having an optical amplifier, between optical transmission lines in which wavelength-division multiplex optical signals are transmitted. The method comprises steps of: generating a desired slope in a desired wavelength range of a gain wavelength curve of the optical amplifier; adjusting an output of the optical amplifier to a desired output level; performing the above two steps in a plurality of optical repeater stations, the steps being carried out in sequence from the first to the last optical repeater stations; and adjusting a level in each optical signal in the wavelength-division multiplex optical signal so as to have substantially constant optical signal-to-noise ratios in the optical signals to be received. Activating the optical communication system according to this procedure allows proper execution of gain slope compensation, output control, and pre-emphasis control.
摘要翻译：本发明涉及一种激活光通信系统的方法，该光通信系统包括多个具有光放大器的光放大器，在其中传输波分复用光信号的光传输线之间。该方法包括以下步骤：在光放大器的增益波长曲线的期望波长范围内产生期望的斜率; 将所述光放大器的输出调节到期望的输出电平; 在多个光学中继站中执行上述两个步骤，该步骤是从第一个到最后一个光中继站进行的; 并调整波分多路复用光信号中的每个光信号的电平，使得要接收的光信号中的光信噪比基本上恒定。根据该程序激活光通信系统允许正确执行增益斜率补偿，输出控制和预加重控制。

16. 发明授权

US4813048A Semiconductor laser driving device 失效
标题翻译：半导体激光驱动装置
公开(公告)号：US4813048A
公开(公告)日：1989-03-14
申请号：US197214
申请日：1988-05-23
申请人： Kazuo Yamane , Masakazu Mori , Takashi Tsuda , Yoshinori Ohkuma , Kazuhiro Suzuki
发明人： Kazuo Yamane , Masakazu Mori , Takashi Tsuda , Yoshinori Ohkuma , Kazuhiro Suzuki
IPC分类号： H01S5/042 , H01S5/062 , H01S5/0683 , H03K5/02 , H03K5/08 , H01S3/00
CPC分类号： H01S5/06216 , H01S5/06835 , H03K5/023 , H03K5/086 , H01S5/0428
摘要： A semiconductor laser driving device using FET's as a positive element in a bias current supply circuit and a pulse current supply circuit, and having compensating circuits for compensating differences in the characteristics of the FET's and a laser diode used in the driving device. Also a pulse amplifier suitable for use as the pulse current supply circuit in the semiconductor driving device, which circuit cuts off a pulse top side portion and a pulse base side portion of an input pulse with respect to a mesial point of the input pulse to obtain an output pulse having a desired pulse amplitude in response to a control signal, without varying a pulse width.

17. 发明授权

US5966938A Peltier control circuit and a peltier device structure 失效
标题翻译：珀耳帖控制电路和珀耳帖器件结构
公开(公告)号：US5966938A
公开(公告)日：1999-10-19
申请号：US607318
申请日：1996-02-26
申请人： Yasunori Nagakubo , Takashi Tsuda , Tetsuo Ishizaka , Shunichi Sato , Saeko Yokoi , Manabu Komiyama , Toshio Ohya , Noriaki Mizuguchi
发明人： Yasunori Nagakubo , Takashi Tsuda , Tetsuo Ishizaka , Shunichi Sato , Saeko Yokoi , Manabu Komiyama , Toshio Ohya , Noriaki Mizuguchi
IPC分类号： H01S3/04 , F25B21/04 , G05D23/19 , G05D23/20 , H01L35/28 , H01S5/024 , H01S5/068 , F25B21/02
CPC分类号： H01S5/02415 , F25B21/04 , G05D23/1919 , H01L35/28 , F25B2321/0212
摘要： A Peltier control circuit detects a temperature of a device combined with a Peltier device and controls a current flowing through the Peltier device so as to keep the temperature of the device at a predetermined value. The circuit has a temperature sensing section for detecting the temperature of a device, a comparing section for comparing a temperature detection value with a predetermined temperature reference value, a limiting section for providing a comparison output with the limitation of a current flowing through the Peltier device and providing the limitation with a predetermined temperature characteristics, and a driving section for providing the Peltier device with an input or output driving current in accordance with the comparison output via the limiting section.
摘要翻译：佩尔贴控制电路检测与珀耳帖装置组合的装置的温度，并控制流过珀尔帖装置的电流，以便将装置的温度保持在预定值。该电路具有用于检测装置的温度的温度检测部分，用于将温度检测值与预定温度参考值进行比较的比较部分，用于提供比较输出和限制流过珀尔帖装置的电流的限制部分并提供具有预定温度特性的限制;以及驱动部分，用于经由限制部分根据比较输出为珀耳帖装置提供输入或输出驱动电流。

18. 发明授权

US4034367A Analog-to-digital converter utilizing a random noise source 失效
标题翻译：使用随机噪声源的模数转换器
公开(公告)号：US4034367A
公开(公告)日：1977-07-05
申请号：US551283
申请日：1975-02-20
申请人： Takashi Sugiyama , Takashi Tsuda
发明人： Takashi Sugiyama , Takashi Tsuda
IPC分类号： H03M1/00 , H03K13/02
CPC分类号： H03M1/201
摘要： An analog-to-digital converter arranged to accept an analog input signal and to convert it into an output having digital form. The converter is characterized by a reference random noise source which generates random noise signals with uniform amplitude occurrence probability density in a given range, and by an amplitude comparator arranged to repeatedly compare the amplitude of the random noise signal with the amplitude of a signal varying with the analog signal to be converted. The amplitude comparator supplies output pulses in accordance with the comparisons, e.g., whenever the analog signal amplitude is greater than the random noise amplitude, and the number of pulses from the amplitude comparator in a measurement interval then digitally corresponds to the value of the analog signal and may be utilized, as in a display. Resolution of the converter is increased beyond the minimum amplitude increment of the random noise source signal in one embodiment by superposition on either the analog signal or the random noise signal of a triangular wave with an amplitude greater than the minimum amplitude increment of the random noise signal, and in another embodiment by superposition of a second random noise signal.
摘要翻译：一种模拟 - 数字转换器，被配置为接受模拟输入信号并将其转换成具有数字形式的输出。转换器的特征在于参考随机噪声源，其产生在给定范围内具有均匀振幅发生概率密度的随机噪声信号，并且通过幅度比较器布置成重复地比较随机噪声信号的振幅与随要转换的模拟信号。幅度比较器根据比较提供输出脉冲，例如，每当模拟信号幅度大于随机噪声幅度时，并且在测量间隔中来自幅度比较器的脉冲数然后数字地对应于模拟信号的值并且可以如在显示器中那样被利用。在一个实施例中，转换器的分辨率增加到随机噪声源信号的最小幅度增量之外，通过叠加具有大于随机噪声信号的最小振幅增量的三角波的模拟信号或随机噪声信号，并且在另一个实施例中通过叠加第二随机噪声信号。

19. 发明授权

US08411138B2 Camera head separated type camera device 有权
标题翻译：相机头分离式相机装置
公开(公告)号：US08411138B2
公开(公告)日：2013-04-02
申请号：US12787157
申请日：2010-05-25
申请人： Takashi Tsuda , Hiroshi Shinozaki , Masatoshi Ookubo , Kei Tashiro , Hiroyuki Irikura
发明人： Takashi Tsuda , Hiroshi Shinozaki , Masatoshi Ookubo , Kei Tashiro , Hiroyuki Irikura
IPC分类号： H04N7/18
CPC分类号： H04N5/23209 , H04N5/23203 , H04N2005/2255
摘要： According to an aspect of the present invention, there is provided a camera head separated type camera device including: a camera head; a camera control unit; and a cable connecting the camera head and the camera control unit with each other, wherein the camera control unit includes: a control portion which feeds a predetermined DC (Direct Current) voltage to the camera head, and wherein the camera head includes: an LVDS conversion driver portion which transmits an LVDS (Low Voltage Differential Signaling) signal to the camera control unit; a correction control portion which outputs a correction value for the LVDS signal; and an LVDS control portion which controls the LVDS conversion driver portion based on the correction value.
摘要翻译：根据本发明的一个方面，提供了一种相机头分离型相机装置，包括：相机头; 相机控制单元; 以及将相机头和相机控制单元彼此连接的电缆，其中所述照相机控制单元包括：将预定DC（直流）电压馈送到所述相机头的控制部分，并且其中所述相机头包括：LVDS 转换驱动器部分，其向相机控制单元发送LVDS（低电压差分信号）信号; 校正控制部分，输出LVDS信号的校正值; 以及LVDS控制部分，其基于校正值来控制LVDS转换驱动器部分。

20. 发明授权

US08054351B2 Method and apparatus for imaging 有权
标题翻译：成像方法和装置
公开(公告)号：US08054351B2
公开(公告)日：2011-11-08
申请号：US12714191
申请日：2010-02-26
申请人： Takashi Tsuda
发明人： Takashi Tsuda
IPC分类号： H04N5/217
CPC分类号： H04N9/045
摘要： According to one embodiment, a shading correction circuit, which corrects for the influence of ambient light quantity shading, for input image light from three CCD sensors of R, G and B, based on a distance from the center of a screen. A shading correction circuit does not make correction for a maximum correction area which is out of a circle with a distance a from the central part of a screen, and corrects for the influence of ambient light quantity shading for a minimum correction area with a distance b from the central part of a screen, after calculating a square L2 of an address distance of each pixel of a correction object obtained by using a vertical distance and a horizontal distance from an address of the central part of a screen.
摘要翻译：根据一个实施例，一种阴影校正电路，其校正来自R，G和B的三个CCD传感器的输入图像光的环境光量阴影的影响，基于距离屏幕中心的距离。阴影校正电路不对距离屏幕中心距离a的圆圈以外的最大校正区域进行校正，并且将距离b的最小校正区域的环境光量阴影的影响校正在从屏幕的中心部分的地址利用垂直距离和水平距离计算校正对象的每个像素的地址距离的平方L2之后，从屏幕的中心部分。

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