公开(公告)号：US20090123116A1

公开(公告)日：2009-05-14

申请号：US12289034

申请日：2008-10-17

申请人： Keiji Tanaka ,  Kenichiro Uchida

发明人： Keiji Tanaka ,  Kenichiro Uchida

IPC分类号： G02B6/36

CPC分类号： G02B6/4201 ,  H05K1/0219 ,  H05K1/0243 ,  H05K1/147 ,  H05K1/162 ,  H05K3/3447 ,  H05K2201/0715 ,  H05K2201/10121 ,  H05K2201/10575

摘要： A technique is disclosed for an optical transceiver, where the frame ground is electrically isolated from the signal ground in a low frequency region and is conducted in a high frequency region, without applying a capacitor as a substantial circuit component. The transceiver includes a TOSA whose housing is grounded with the FG and connected with the driver with a FPC board. On the FPC board is formed with a parallel plate capacitor, one conductive pattern on the one surface is connected with the housing of the TOSA, while the other pattern in the opposite surface is connected with the SG. This parallel plate capacitor isolates the FG from the SG in low frequencies, while conducts the FG with the SG in high frequencies.

摘要翻译： 公开了一种用于光收发器的技术，其中框架地与低频区域中的信号地电隔离并且在高频区域中传导，而不施加电容器作为实质电路部件。 收发器包括TOSA，其外壳与FG接地，并与FPC板与驱动器连接。 在FPC基板上形成有平行平板电容器，一个表面上的一个导体图案与TOSA的外壳相连，而相反表面的另一个图案与SG连接。 这种平行电容器将FG与SG在低频下隔离，同时以高频率将SG与SG进行导通。

公开(公告)号：US07708473B2

公开(公告)日：2010-05-04

申请号：US12289034

申请日：2008-10-17

申请人： Keiji Tanaka ,  Kenichiro Uchida

发明人： Keiji Tanaka ,  Kenichiro Uchida

IPC分类号： G02B6/36

CPC分类号： G02B6/4201 ,  H05K1/0219 ,  H05K1/0243 ,  H05K1/147 ,  H05K1/162 ,  H05K3/3447 ,  H05K2201/0715 ,  H05K2201/10121 ,  H05K2201/10575

摘要： A technique is disclosed for an optical transceiver, where the frame ground is electrically isolated from the signal ground in a low frequency region and is conducted in a high frequency region, without applying a capacitor as a substantial circuit component. The transceiver includes a TOSA whose housing is grounded with the FG and connected with the driver with a FPC board. On the FPC board is formed with a parallel plate capacitor, one conductive pattern on the one surface is connected with the housing of the TOSA, while the other pattern in the opposite surface is connected with the SG. This parallel plate capacitor isolates the FG from the SG in low frequencies, while conducts the FG with the SG in high frequencies.

摘要翻译： 公开了一种用于光收发器的技术，其中框架地与低频区域中的信号地电隔离并且在高频区域中传导，而不施加电容器作为实质电路部件。 收发器包括TOSA，其外壳与FG接地，并与FPC板与驱动器连接。 在FPC基板上形成有平行平板电容器，一个表面上的一个导体图案与TOSA的外壳相连，而相反表面的另一个图案与SG连接。 这种平行电容器将FG与SG在低频下隔离，同时以高频率将SG与SG进行导通。

公开(公告)号：US09029474B2

公开(公告)日：2015-05-12

申请号：US12450778

申请日：2008-04-23

申请人： Masaaki Ozawa ,  Keisuke Odoi ,  Hironori Atarashi ,  Kei-ichi Akabori ,  Toshihiko Nagamura ,  Keiji Tanaka

发明人： Masaaki Ozawa ,  Keisuke Odoi ,  Hironori Atarashi ,  Kei-ichi Akabori ,  Toshihiko Nagamura ,  Keiji Tanaka

IPC分类号： C08L51/00 ,  C08L41/00 ,  C08J7/12 ,  C08L101/00

CPC分类号： C08J7/12 ,  C08L101/005

摘要： The present invention relates to a process for producing a polymer structure comprising: mixing and unifying a matrix polymer made of a linear polymer and a highly-branched polymer having hydrophilic functional groups at molecular ends and to form a structure containing the matrix polymer and the highly-branched polymer; and subjecting the obtained structure to either immersion in water and/or a hydrophilic solvent or exposure to an atmosphere of vapor of water and/or a hydrophilic solvent at a temperature ranging from a temperature lower than Tg of the matrix polymer by 30° C. to decomposition temperature of the matrix polymer; wherein the hydrophilic functional groups at the molecular ends of the highly-branched polymer are distributed in outermost surface of the polymer structure at an enhanced density. The present invention also relates to a process for producing a polymer structure in which vinyl polymer chains are grafted to at least a part of the hydrophilic functional groups.

摘要翻译： 本发明涉及一种聚合物结构体的制造方法，其特征在于，在分子末端将由线性聚合物构成的基质聚合物和具有亲水性官能团的高支化聚合物混合均匀并形成含有基体聚合物的结构， 支链聚合物 并将得到的结构物浸入水和/或亲水性溶剂中或在低于基体聚合物的Tg的温度范围内暴露于水和/或亲水性溶剂的气体的气氛中30℃。 到基体聚合物的分解温度; 其中高度支化聚合物的分子末端的亲水官能团以增强的密度分布在聚合物结构的最外表面。 本发明还涉及其中乙烯基聚合物链接枝至至少一部分亲水官能团的聚合物结构的方法。

公开(公告)号：US08301033B2

公开(公告)日：2012-10-30

申请号：US12752782

申请日：2010-04-01

申请人： Keiji Tanaka

发明人： Keiji Tanaka

IPC分类号： H04B10/04

CPC分类号： H01S5/042 ,  H01S5/0428

摘要： An LD driver to generate an asymmetrical driving current with a relatively faster falling edge and an optical transmitter having the LD driver are disclosed. The LD driver includes a primary driver and the sub-driver connected in parallel to the primary driver. The primary driver converts the input signal or the delayed signal delayed from the input signal into the primary current. The sub-driver generates a symmetrical current tracing the input or the delayed signal, and an asymmetrical current formed by the OR operation between the input and delayed signals. The driving current is formed by adding the primary current, the symmetrical current and the asymmetrical current.

摘要翻译： 公开了一种用于产生具有相对较快下降沿的不对称驱动电流的LD驱动器和具有LD驱动器的光发射器。 LD驱动器包括主驱动器和与主驱动器并联连接的副驱动器。 主驱动器将输入信号或从输入信号延迟的延迟信号转换为初级电流。 子驱动器产生对称电流跟踪输入或延迟信号，以及由输入和延迟信号之间的或运算形成的非对称电流。 通过增加一次电流，对称电流和不对称电流来形成驱动电流。

公开(公告)号：US20110195880A1

公开(公告)日：2011-08-11

申请号：US13121259

申请日：2009-09-29

申请人： Yasushi Kawamura ,  Keiji Tanaka

发明人： Yasushi Kawamura ,  Keiji Tanaka

IPC分类号： C10M133/04 ,  C10M113/12 ,  C10M113/08

CPC分类号： C10M169/00 ,  C10M2201/0626 ,  C10M2201/1036 ,  C10M2203/1006 ,  C10M2205/0285 ,  C10M2207/122 ,  C10M2207/126 ,  C10M2207/1285 ,  C10M2215/04 ,  C10M2215/1026 ,  C10M2215/121 ,  C10M2217/0456 ,  C10N2230/06 ,  C10N2250/10 ,  C10M2201/0856

摘要： A grease composition for use in resin lubrication wherein at least one amine salt of an unsaturated or saturated fatty acid is incorporated in a grease base material which includes a base oil and a thickener, preferably wherein at least one fatty acid amine salt of the following general formula (1) is incorporated: RCOO−R′NH3′ wherein either (i) R is an unsaturated by hydrocarbon group having from 15 to 21 carbon atoms, and R′ is a saturated or unsaturated linear or branched hydrocarbon group having from 8 to 22 carbon atoms; or (ii) R is a linear saturated hydrocarbon group having from 5 to 21 carbon atoms, and R′ is an unsaturated hydrocarbon group having from 16 to 18 carbon atoms. The grease composition of the- present invention improves the lubricity between resin and resin or resin. and another material such as a metal.

摘要翻译： 一种用于树脂润滑的润滑脂组合物，其中将不饱和或饱和脂肪酸的至少一种胺盐引入包含基础油和增稠剂的油脂基材料中，优选地，其中至少一种以下一般的脂肪酸胺盐 式（1）：RCOO-R'NH 3'，其中（i）R是具有15至21个碳原子的烃基是不饱和的，R'是饱和或不饱和的直链或支链烃基，其具有8至 22个碳原子; 或（ii）R为碳原子数为5〜21的直链状饱和烃基，R'为碳原子数16〜18的不饱和烃基。 本发明的润滑脂组合物提高树脂与树脂或树脂之间的润滑性。 和另一种材料如金属。

公开(公告)号：US07912380B2

公开(公告)日：2011-03-22

申请号：US11416389

申请日：2006-05-03

申请人： Katsumi Uesaka ,  Keiji Tanaka

发明人： Katsumi Uesaka ,  Keiji Tanaka

IPC分类号： H04B10/06

CPC分类号： H04B10/66 ,  H04B10/0799

摘要： The present invention provides an optical receiver able to monitor the level of the optical input signal in accurate even when the level is quite small. The optical receiver comprises a photodiode to generate a photocurrent Ipd, a current mirror circuit to reflect the photocurrent into a mirrored current Imon, a current-to-voltage converter to convert the mirrored current Imon to a voltage signal, switch to connect/cut the current mirror circuit with the current-to-voltage converter, and a correction unit for subtracting a signal when the switch is connected from a signal when the switch is cut.

摘要翻译： 本发明提供一种即使当该电平相当小时也能够准确地监视光输入信号的电平的光接收器。 光接收器包括光电二极管以产生光电流Ipd，将光电流反射成镜像电流Imon的电流镜电路，用于将镜像电流Imon转换成电压信号的电流 - 电压转换器，切换到连接/切割 具有电流 - 电压转换器的电流镜电路，以及用于当开关切断时从信号连接开关时减去信号的校正单元。

公开(公告)号：US07809034B2

公开(公告)日：2010-10-05

申请号：US12071056

申请日：2008-02-14

申请人： Keiji Tanaka

发明人： Keiji Tanaka

IPC分类号： H01S3/00

CPC分类号： H01S5/06832 ,  H01S5/0427 ,  H01S5/06804 ,  H01S5/06812

摘要： The present invention provides an auto-power control (APC) circuit and a method to stabilize the extinction ratio of an optical output from a laser diode (LD) in an optical transmitter. The APC circuit according to the invention includes two feedback loops for the modulation IM and the bias current IB each having variable loop gain. The extinction ratio of the optical output from the LD is kept constant by setting the ratio of the loop gains of respective APC circuits to be ER−1.

摘要翻译： 本发明提供一种自动功率控制（APC）电路和稳定来自光发射机中的激光二极管（LD）的光输出的消光比的方法。 根据本发明的APC电路包括用于调制IM和偏置电流IB的两个反馈回路，每个具有可变的环路增益。 通过将各个APC电路的环路增益的比率设置为ER-1，LD的光输出的消光比保持恒定。

公开(公告)号：US07751725B2

公开(公告)日：2010-07-06

申请号：US11500325

申请日：2006-08-08

申请人： Keiji Tanaka

发明人： Keiji Tanaka

IPC分类号： H04B10/06 ,  H04B10/08

CPC分类号： H04B10/66

摘要： The present invention provides an optical receiver that includes a monitoring unit with a function to prevent the unit from misjudging of the loss-of-signal state. In particular, the present invention is applicable to the monitoring unit that receives the signal to be judged from the processing unit posterior to the optical converting unit that couples with the processing unit via the capacitor. The signal reflects the second or higher order response lag due to the coupling capacitor. The monitoring unit of the invention generates the loss-of-alarm signal when the signal is continuously smaller than the first reference by a preset time and continuously greater than the second reference by the present time.

摘要翻译： 本发明提供一种光接收机，其包括具有防止该单元误信号状态失调的功能的监视单元。 特别地，本发明可应用于从经由电容器与处理单元耦合的光转换单元后面的处理单元接收要判断的信号的监视单元。 信号反映了由于耦合电容器引起的第二或更高阶响应滞后。 本发明的监视单元当信号连续小于第一参考预定时间并连续地大于当前时间的第二参考值时，产生报警信号。

公开(公告)号：US07668469B2

公开(公告)日：2010-02-23

申请号：US11411224

申请日：2006-04-26

申请人： Seigo Furudate ,  Keiji Tanaka

发明人： Seigo Furudate ,  Keiji Tanaka

IPC分类号： H04B10/06

CPC分类号： H04B10/66

摘要： The present invention provides an optical receiver that enables to vary the sensitivity depending on the transmission speed. The optical receiver provides a photodiode to generate the photocurrent, the pre-amplifier to convert the photocurrent to the voltage signal, the lead pin to supply the bias voltage to the photodiode, and the control block to generate the switching signal for varying the current-to-voltage conversion efficiency and the frequency bandwidth of the pre-amplifier based on the control signal. The control signal is commonly provided from the lead pin through which the bias voltage is applied. The control block interprets the signal applied to the lead pin and generates the switching signal.

摘要翻译： 本发明提供一种能够根据传输速度改变灵敏度的光接收机。 光接收器提供光电二极管以产生光电流，前置放大器将光电流转换为电压信号，引脚引脚将偏置电压提供给光电二极管，控制块产生开关信号， 基于控制信号的前置放大器的电压转换效率和频率带宽。 控制信号通常由施加偏置电压的引脚引脚提供。 控制块解释施加到引脚引脚的信号并产生开关信号。

公开(公告)号：US07466928B2

公开(公告)日：2008-12-16

申请号：US11187436

申请日：2005-07-22

申请人： Keiji Tanaka

发明人： Keiji Tanaka

IPC分类号： H04B10/06

CPC分类号： H04B10/66

摘要： The present invention provides an optical receiver applicable to various transmission rates. The optical receiver of the invention includes a main amplifier and a switching unit. The main amplifier amplifies a voltage signal output from the preamplifier, which converts the photocurrent to the voltage signal. The switching unit is inserted between the preamplifier and the main amplifier to vary the input impedance RIN of the main amplifier depending on the transmission rate.

摘要翻译： 本发明提供一种适用于各种传输速率的光接收机。 本发明的光接收机包括主放大器和开关单元。 主放大器放大从前置放大器输出的电压信号，该电压信号将光电流转换为电压信号。 开关单元插入在前置放大器和主放大器之间，以根据传输速率改变主放大器的输入阻抗RIN。