公开(公告)号：US06411429B1

公开(公告)日：2002-06-25

申请号：US09667433

申请日：2000-09-22

申请人： Hiroaki Tomofuji ,  Motoyoshi Sekiya ,  Takeshi Sakamoto ,  Makoto Murakami ,  Chihiro Ohshima ,  Yoshihito Onoda

发明人： Hiroaki Tomofuji ,  Motoyoshi Sekiya ,  Takeshi Sakamoto ,  Makoto Murakami ,  Chihiro Ohshima ,  Yoshihito Onoda

IPC分类号： H01S300

CPC分类号： H04B10/296 ,  H01S3/067 ,  H01S3/06758 ,  H04B10/2931 ,  H04B2210/258

摘要： An optical amplifying apparatus for widening the input dynamic range and lowering noises. The optical amplifying apparatus comprises a first optical amplifier, an optical attenuator, a second optical amplifier and a controller. The first optical amplifier changes the target value of output light when the variance amount of input light reaches a predetermined value. The controller changes the attenuation amount of attenuator in accordance with a difference between the target value and the changed target value of the output light level of the first optical amplifier, when the target value of the output light level of the first optical amplifier is changed.

摘要翻译： 一种用于扩大输入动态范围并降低噪声的光学放大装置。 光放大装置包括第一光放大器，光衰减器，第二光放大器和控制器。 当输入光的变化量达到预定值时，第一光学放大器改变输出光的目标值。 当第一光放大器的输出光电平的目标值改变时，控制器根据目标值与第一光放大器的输出光电平的改变的目标值之间的差异来改变衰减器的衰减量。

公开(公告)号：US06654561B1

公开(公告)日：2003-11-25

申请号：US09699479

申请日：2000-10-31

申请人： Takafumi Terahara ,  Takeshi Sakamoto ,  Hiroaki Tomofuji ,  Motoyoshi Sekiya ,  Makoto Murakami ,  Kazuo Yamane ,  Hiroshi Onaka

发明人： Takafumi Terahara ,  Takeshi Sakamoto ,  Hiroaki Tomofuji ,  Motoyoshi Sekiya ,  Makoto Murakami ,  Kazuo Yamane ,  Hiroshi Onaka

IPC分类号： H04B1008

CPC分类号： H04B10/07953 ,  H04B10/0799

摘要： In a method of measuring an optical signal-to-noise ratio according to the present invention, a partial optical signal-to-noise ratio is defined, the partial optical signal-to-noise ratio is calculated from a predetermined physical quantity, the sum of inverse numbers of the partial optical signal-to-noise ratios is calculated, and further an inverse number of the sum is calculated to acquire an optical signal-to-noise ratio. The present invention makes it possible to measure optical SNR without directly measuring ASE in the optical signal. The present invention provides a measuring apparatus, a measuring circuit, a pre-emphasis method, an optical communication system, and a controlling apparatus each utilizing this method.

摘要翻译： 在根据本发明的测量光信噪比的方法中，定义部分光信噪比，从预定物理量计算部分光信噪比，总和 计算出部分光信噪比的逆数，并且进一步计算和的逆数以获得光信噪比。 本发明使得可以在光信号中不直接测量ASE来测量光信噪比。 本发明提供一种使用该方法的测量装置，测量电路，预加重方法，光通信系统和控制装置。

公开(公告)号：US06570703B2

公开(公告)日：2003-05-27

申请号：US09968892

申请日：2001-10-03

申请人： Makoto Murakami ,  Motoyoshi Sekiya ,  Hideto Saito ,  Hiroaki Tomofuji ,  Takeshi Sakamoto ,  Kazuo Yamane

发明人： Makoto Murakami ,  Motoyoshi Sekiya ,  Hideto Saito ,  Hiroaki Tomofuji ,  Takeshi Sakamoto ,  Kazuo Yamane

IPC分类号： H04B1008

CPC分类号： H04B10/296 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/10015 ,  H01S2301/02 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0213 ,  H04J14/0221

摘要： An optical amplifying apparatus of the present invention comprises a correction part for correcting a predetermined fixed value of an output optical level by a correction amount according to an optical power of amplified spontaneous emission (ASE). The correction amount is, for example, computed by predetermined formulas. According to the present invention, when a WDM optical signal is optically amplified, the output is fixedly amplified for each channel by the correction amount which is a value obtained with the ASE levels taken into consideration, so that a fluctuation in the level of the average optical power of the channels is suppressed even if an optical signal is dropped/added therefrom/thereto during repeated transmissions.

公开(公告)号：US06987903B2

公开(公告)日：2006-01-17

申请号：US11101518

申请日：2005-04-08

申请人： Ichiro Nakajima ,  Hiroaki Tomofuji ,  Takeshi Sakamoto ,  Yuji Shimada

发明人： Ichiro Nakajima ,  Hiroaki Tomofuji ,  Takeshi Sakamoto ,  Yuji Shimada

IPC分类号： G02B6/28

CPC分类号： H04B10/25253

摘要： An optical transmission network includes a first dispersion compensator arranged in a maximum dispersion span having a maximum dispersion value and searched out from within a maximum dispersion route having a maximum dispersion value from among routes of non-regeneration intervals within which a dispersion value before dispersion compensation does not satisfy an upper limit of a dispersion tolerance, and a second dispersion compensator arranged in a maximum dispersion span having a maximum dispersion value searched out from within a maximum dispersion route having a maximum dispersion value from among the routes when a dispersion compensator is successively arranged until a route of a non-regeneration interval within which a dispersion value of a certain channel does not satisfy the dispersion tolerance does not remain any more based on the dispersion value after the dispersion compensation with respect to the searched out maximum dispersion span. The dispersion compensation amounts of the first and second dispersion compensators are such that, when the dispersion compensation amount of the maximum dispersion span in which the first and second dispersion compensators are arranged is successively increased, the span has a residual dispersion value equal to or higher than a fixed range and the maximum dispersion route which relates to the spans has a residual dispersion value which satisfies the dispersion tolerance or the span has a residual dispersion value which is within the fixed range.

摘要翻译： 光传输网络包括布置在具有最大色散值的最大色散跨度中的第一色散补偿器，并且从在非再生间隔的路径内具有最大色散值的最大色散路径内搜索出的第一色散补偿器，其中色散补偿之前的色散值 不满足色散公差的上限，并且在色散补偿器连续地从路径中具有最大色散值的最大色散路径中搜索出的具有最大色散值的最大色散范围内的第二色散补偿器 排列直到某个通道的色散值不满足色散容限的非再生间隔的路径基于相对于搜索出的最大色散跨度的色散补偿之后的色散值不再存在。 第一和第二色散补偿器的色散补偿量使得当排列第一和第二色散补偿器的最大色散跨度的色散补偿量依次增加时，跨度具有等于或等于更高的残余色散值 与固定范围相关联的最大色散路径与跨度相关的最大色散路径具有满足色散公差或跨度的残留色散值具有在固定范围内的残留色散值。

公开(公告)号：US07286758B2

公开(公告)日：2007-10-23

申请号：US11332860

申请日：2006-01-13

申请人： Yuji Shimada ,  Hiroaki Tomofuji ,  Takuji Maeda ,  Takeshi Sakamoto ,  Ichiro Nakajima

发明人： Yuji Shimada ,  Hiroaki Tomofuji ,  Takuji Maeda ,  Takeshi Sakamoto ,  Ichiro Nakajima

IPC分类号： H04B10/08 ,  H04B10/02

CPC分类号： H04B10/07955 ,  H04B1/745 ,  H04B10/032 ,  H04B10/077

摘要： A method for switching a transmission route in an optical network. A regenerator station extracts a main signal, and detects the input level of the main signal. When the input level falls below a threshold, the regenerator station determines that a failure occurs, and stops output of a main signal from the regenerator station, and transmits a control signal indicating occurrence of the failure to a receiver station, which separates the control signal from a main signal transmitted thereto, detects the input level of the main signal at the receiver station, analyzes the separated control signal, and determines whether or not a failure occurs. When the input level of the main signal at the receiver station falls below a threshold, or when the separated control signal indicates occurrence of a failure, the receiver station detects the occurrence of the failure, and switches the transmission route.

摘要翻译： 一种在光网络中切换传输路由的方法。 再生器站提取主信号，并检测主信号的输入电平。 当输入电平低于阈值时，再生器站确定发生故障，并且停止来自再生站的主信号的输出，并将指示故障发生的控制信号发送到接收站，该接收机将控制信号 从发送到其的主信号，检测接收站处的主信号的输入电平，分析分离的控制信号，并确定是否发生故障。 当接收站的主信号的输入电平低于阈值时，或当分离的控制信号表示发生故障时，接收站检测到故障的发生，并切换传输路由。

公开(公告)号：US20050175279A1

公开(公告)日：2005-08-11

申请号：US11101518

申请日：2005-04-08

申请人： Ichiro Nakajima ,  Hiroaki Tomofuji ,  Takeshi Sakamoto ,  Yuji Shimada

发明人： Ichiro Nakajima ,  Hiroaki Tomofuji ,  Takeshi Sakamoto ,  Yuji Shimada

IPC分类号： H04B10/2507 ,  H04B10/07 ,  H04B10/2525 ,  H04B10/27 ,  H04B10/275 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02 ,  G02B6/28

CPC分类号： H04B10/25253

摘要： An optical transmission network includes a first dispersion compensator arranged in a maximum dispersion span having a maximum dispersion value and searched out from within a maximum dispersion route having a maximum dispersion value from among routes of non-regeneration intervals within which a dispersion value before dispersion compensation does not satisfy an upper limit of a dispersion tolerance, and a second dispersion compensator arranged in a maximum dispersion span having a maximum dispersion value searched out from within a maximum dispersion route having a maximum dispersion value from among the routes when a dispersion compensator is successively arranged until a route of a non-regeneration interval within which a dispersion value of a certain channel does not satisfy the dispersion tolerance does not remain any more based on the dispersion value after the dispersion compensation with respect to the searched out maximum dispersion span. The dispersion compensation amounts of the first and second dispersion compensators are such that, when the dispersion compensation amount of the maximum dispersion span in which the first and second dispersion compensators are arranged is successively increased, the span has a residual dispersion value equal to or higher than a fixed range and the maximum dispersion route which relates to the spans has a residual dispersion value which satisfies the dispersion tolerance or the span has a residual dispersion value which is within the fixed range.

摘要翻译： 光传输网络包括布置在具有最大色散值的最大色散跨度中的第一色散补偿器，并且从在非再生间隔的路径内具有最大色散值的最大色散路径内搜索出的第一色散补偿器，其中色散补偿之前的色散值 不满足色散公差的上限，并且在色散补偿器连续地从线路中具有最大色散值的最大色散路径中搜索出的具有最大色散值的最大色散范围内的第二色散补偿器 排列直到某个通道的色散值不满足色散容限的非再生间隔的路径基于相对于搜索出的最大色散跨度的色散补偿之后的色散值不再存在。 第一和第二色散补偿器的色散补偿量使得当排列第一和第二色散补偿器的最大色散跨度的色散补偿量依次增加时，跨度具有等于或等于更高的残余色散值 与固定范围相关联的最大色散路径与跨度相关的最大色散路径具有满足色散公差或跨度的残留色散值具有在固定范围内的残留色散值。

公开(公告)号：US20060188253A1

公开(公告)日：2006-08-24

申请号：US11332860

申请日：2006-01-13

申请人： Yuji Shimada ,  Hiroaki Tomofuji ,  Takuji Maeda ,  Takeshi Sakamoto ,  Ichiro Nakajima

发明人： Yuji Shimada ,  Hiroaki Tomofuji ,  Takuji Maeda ,  Takeshi Sakamoto ,  Ichiro Nakajima

IPC分类号： H04B10/08

CPC分类号： H04B10/07955 ,  H04B1/745 ,  H04B10/032 ,  H04B10/077

摘要： A method for switching a transmission route in an optical network. A regenerator station extracts a main signal, and detects the input level of the main signal. When the input level falls below a threshold, the regenerator station determines that a failure occurs, and stops output of a main signal from the regenerator station, and transmits a control signal indicating occurrence of the failure to a receiver station, which separates the control signal from a main signal transmitted thereto, detects the input level of the main signal at the receiver station, analyzes the separated control signal, and determines whether or not a failure occurs. When the input level of the main signal at the receiver station falls below a threshold, or when the separated control signal indicates occurrence of a failure, the receiver station detects the occurrence of the failure, and switches the transmission route.

摘要翻译： 一种在光网络中切换传输路由的方法。 再生器站提取主信号，并检测主信号的输入电平。 当输入电平低于阈值时，再生器站确定发生故障，并且停止来自再生站的主信号的输出，并将指示故障发生的控制信号发送到接收站，该接收机将控制信号 从发送到其的主信号，检测接收站处的主信号的输入电平，分析分离的控制信号，并确定是否发生故障。 当接收站的主信号的输入电平低于阈值时，或当分离的控制信号表示发生故障时，接收站检测到故障的发生，并切换传输路由。

公开(公告)号：US08824902B2

公开(公告)日：2014-09-02

申请号：US13177644

申请日：2011-07-07

申请人： Takeshi Sakamoto ,  Kosuke Komaki

发明人： Takeshi Sakamoto ,  Kosuke Komaki

IPC分类号： H04B10/06 ,  H04B10/00 ,  H04B17/00 ,  H04B10/079 ,  H04B10/032 ,  H04B10/61

CPC分类号： H04B10/032 ,  H04B10/07951 ,  H04B10/07953 ,  H04B10/616

摘要： An optical receiver includes: an optical to electric converter that converts a received optical signal into an analog electric signal; an analog to digital converter that converts the analog electric signal obtained by the optical to electric converter into a digital signal; a digital signal processor that performs wave shaping on the digital signal; an information extract circuit that extracts information related to loss or deterioration of the optical signal from a signal propagating from the analog to digital converter to the digital signal processor or a signal in the digital signal processor; and a judging circuit that judges, based on the information extracted by the information extract circuit, whether the optical signal is lost or deteriorates.

摘要翻译： 一种光接收机包括：光接收电转换器，将接收到的光信号转换为模拟电信号; 将由光电转换器获得的模拟电信号转换为数字信号的模数转换器; 数字信号处理器，对数字信号进行波形整形; 信息提取电路，从从模数转换器传播到数字信号处理器的信号或数字信号处理器中的信号中提取与光信号的丢失或劣化有关的信息; 以及判断电路，其基于由信息提取电路提取的信息判断光信号是丢失还是劣化。

公开(公告)号：US20130003283A1

公开(公告)日：2013-01-03

申请号：US13525669

申请日：2012-06-18

申请人： Takeshi Sakamoto

发明人： Takeshi Sakamoto

IPC分类号： G06F1/16

CPC分类号： G02F1/133308 ,  G02F2001/133314 ,  G02F2201/46

摘要： A display device includes: a display panel; a rear housing covering a back face of the display panel, and including a plurality of first screw holes at a peripheral portion thereof; a frame including a front portion, a side portion, a rear portion, and a plurality of second screw holes provided in the rear portion, the front portion covering a peripheral portion of a front face of the display panel, the side portion covering a side face of the display panel, the rear portion covering the peripheral portion of the rear housing, and the second screw holes being arranged alternately with the first screw holes; and a back face plate covering the rear portion of the frame and the rear housing, and including third screw holes corresponding to the first screw holes and the second screw holes.

摘要翻译： 显示装置包括：显示面板; 后壳体，其覆盖所述显示面板的背面，并且在其周边部分包括多个第一螺钉孔; 包括前部，侧部，后部和设置在后部的多个第二螺钉孔的框架，所述前部覆盖所述显示面板的正面的周边部分，所述侧部覆盖所述侧部 所述后部覆盖所述后壳体的周边部分，并且所述第二螺钉孔与所述第一螺钉孔交替布置; 以及覆盖框架的后部和后壳体的背面板，并且包括对应于第一螺钉孔和第二螺钉孔的第三螺钉孔。

公开(公告)号：US20120327501A1

公开(公告)日：2012-12-27

申请号：US13575376

申请日：2011-01-05

申请人： Takeshi Sakamoto ,  Takafumi Ogiwara

发明人： Takeshi Sakamoto ,  Takafumi Ogiwara

IPC分类号： G02B26/00

CPC分类号： B23K26/40 ,  B23K26/53 ,  B23K2103/50

摘要： In a laser processing system 400, a plurality of element patterns for creating a modulation pattern are prepared, and the modulation pattern is created from the element patterns according to a condition for forming the modified region for an object to be processed in order to form the modified region corresponding thereto. Laser light is modulated according to thus created modulation pattern, and the modified region is formed in the object by irradiation with the modulated laser light. Thus, according to the condition for forming the modified region corresponding to the object, the modulation pattern is created from the element patterns prepared beforehand.

摘要翻译： 在激光处理系统400中，准备用于产生调制图案的多个元件图案，并且根据用于形成待处理对象的修改区域的条件从元件图案创建调制图案，以便形成 对应的修改区域。 根据这样产生的调制图案对激光进行调制，通过照射调制后的激光将被修饰区域形成在物体内。 因此，根据用于形成对象的修改区域的条件，根据预先准备的元素图案产生调制图案。