公开(公告)号：US08816772B2

公开(公告)日：2014-08-26

申请号：US13180752

申请日：2011-07-12

申请人： Yoshiyuki Sugimoto ,  Sosaku Sawada ,  Taizo Tatsumi

发明人： Yoshiyuki Sugimoto ,  Sosaku Sawada ,  Taizo Tatsumi

IPC分类号： H03F3/45

CPC分类号： H03F3/45098 ,  H03F3/08 ,  H03F3/087 ,  H03F3/45103 ,  H03F3/45475 ,  H03F2203/45138 ,  H03F2203/45302 ,  H03F2203/45702 ,  H03G3/3084

摘要： A differential circuit with a function of a variable gain without shifting the output cross point is disclosed. The differential circuit includes an amplifying stage and a control stage. The amplifying stage includes three units each having a pair of transistors, a pair of load resistors, and a pair of current sources. The second and third units each put between the first unit and the load resistor to bypass the current. The control stage includes two units and two current sources to compensate the current bypassed by the second or third unit to keep the DC output level substantially in constant.

摘要翻译： 公开了具有可变增益的功能而不移动输出交叉点的差分电路。 差分电路包括放大级和控制级。 放大级包括三个单元，每个具有一对晶体管，一对负载电阻和一对电流源。 第二和第三单元分别放在第一单元和负载电阻之间绕过电流。 控制级包括两个单元和两个电流源，以补偿由第​​二或第三单元旁路的电流，以保持DC输出电平基本上恒定。

公开(公告)号：US08704592B2

公开(公告)日：2014-04-22

申请号：US13428374

申请日：2012-03-23

申请人： Taizou Tatsumi ,  Keiji Tanaka ,  Sosaku Sawada

发明人： Taizou Tatsumi ,  Keiji Tanaka ,  Sosaku Sawada

IPC分类号： H03F3/60

CPC分类号： H03F3/45089 ,  H03F3/45475 ,  H03F3/605 ,  H03F2203/45138 ,  H03F2203/45392 ,  H03F2203/45612

摘要： A traveling wave amplifier (TWA) primarily for driving a semiconductor optical device is disclosed. The TWA of an embodiment provides a plurality of differential amplifiers of the first type and an additional differential amplifier of the second type, where are they are connected between the input and the output of the TWA. The differential amplifiers of the first type provide a first delay from the input to the output, while, the differential amplifier of the second type provide a second delay longer than the first delay between the input and the output of the TWA.

摘要翻译： 公开了主要用于驱动半导体光学器件的行波放大器（TWA）。 实施例的TWA提供第一类型的多个差分放大器和第二类型的附加差分放大器，它们连接在TWA的输入和输出之间。 第一类型的差分放大器提供从输入到输出的第一延迟，而第二类型的差分放大器提供比TWA的输入和输出之间的第一延迟更长的第二延迟。

公开(公告)号：US20120249232A1

公开(公告)日：2012-10-04

申请号：US13428374

申请日：2012-03-23

申请人： Taizou TATSUMI ,  Keiji TANAKA ,  Sosaku SAWADA

发明人： Taizou TATSUMI ,  Keiji TANAKA ,  Sosaku SAWADA

IPC分类号： H03F3/60

CPC分类号： H03F3/45089 ,  H03F3/45475 ,  H03F3/605 ,  H03F2203/45138 ,  H03F2203/45392 ,  H03F2203/45612

摘要： A traveling wave amplifier (TWA) primarily for driving a semiconductor optical device is disclosed. The TWA of an embodiment provides a plurality of differential amplifiers of the first type and an additional differential amplifier of the second type, where are they are connected between the input and the output of the TWA. The differential amplifiers of the first type provide a first delay from the input to the output, while, the differential amplifier of the second type provide a second delay longer than the first delay between the input and the output of the TWA.

摘要翻译： 公开了主要用于驱动半导体光学器件的行波放大器（TWA）。 实施例的TWA提供第一类型的多个差分放大器和第二类型的附加差分放大器，它们连接在TWA的输入和输出之间。 第一类型的差分放大器提供从输入到输出的第一延迟，而第二类型的差分放大器提供比TWA的输入和输出之间的第一延迟更长的第二延迟。

公开(公告)号：US5596665A

公开(公告)日：1997-01-21

申请号：US551270

申请日：1995-10-31

申请人： Hiromi Kurashima ,  Hisato Takahashi ,  Ken-ichi Kitayama ,  Ryoji Sakamoto ,  Sosaku Sawada ,  Takeshi Sekiguchi ,  Ichiro Tonai ,  Nobuo Shiga

发明人： Hiromi Kurashima ,  Hisato Takahashi ,  Ken-ichi Kitayama ,  Ryoji Sakamoto ,  Sosaku Sawada ,  Takeshi Sekiguchi ,  Ichiro Tonai ,  Nobuo Shiga

IPC分类号： G02B6/42

CPC分类号： G02B6/4292 ,  G02B6/4246 ,  G02B6/4274 ,  G02B6/4281 ,  G02B6/4283 ,  G02B6/4245 ,  G02B6/4263 ,  G02B6/4269

摘要： It is an object of the present invention to provide an optical module having a structure in which alignment precision of sleeves to be accommodated to a housing can be improved with a simple operation. The optical module according to the present invention is characterized by providing special structures for defining the positions of the sleeves to a sleeve holder for holding the sleeves, and the housing having a cavity for accommodating the sleeves. In particular, the housing includes support portions each having a reference surface for defining the fixing position of the corresponding sleeve. The sleeve holder includes spring pieces each for urging the sleeve to the reference surface.

摘要翻译： 本发明的目的是提供一种光学模块，其具有能够通过简单的操作来提高容纳在壳体中的套筒的对准精度的结构。 根据本发明的光学模块的特征在于提供用于将套筒定位到用于保持套筒的套筒保持器的位置的特殊结构，并且壳体具有用于容纳套筒的空腔。 特别地，壳体包括各自具有用于限定相应套筒的固定位置的参考表面的支撑部分。 套筒保持器包括用于将套筒推压到参考表面的弹簧片。

公开(公告)号：US5489798A

公开(公告)日：1996-02-06

申请号：US267439

申请日：1994-06-29

申请人： Kentaro Doguchi ,  Goro Sasaki ,  Hiroshi Yano ,  Sosaku Sawada

发明人： Kentaro Doguchi ,  Goro Sasaki ,  Hiroshi Yano ,  Sosaku Sawada

IPC分类号： H01L27/144 ,  H01L31/0224 ,  H01L29/06 ,  H01L29/78

CPC分类号： H01L27/1443 ,  H01L31/022416

摘要： In an opto-electronic integrated circuit of the present invention, in a first surface region of a semiconductor substrate, a pin-type photodiode is constituted on the basis of a photodiode layer formed on a first transistor layer. In a second surface region of the semiconductor substrate, a heterojunction bipolar transistor is constituted on the basis of only a second transistor layer separated form the first transistor layer. Since a plurality of heterojunction bipolar transistors are normally integrated for one pin-type photodiode, the thickness of the heterojunction bipolar transistors larger in number than the pin-type photodiode is set regardless of the thickness of the pin-type photodiode. The thickness of a high-resistance layer in the pin-type photodiode is set with an increased degree of freedom. When the first surface region of the semiconductor substrate is the inner region of a recessed step portion, and the second surface region of the semiconductor substrate is the outer region of the recessed step portion, a difference in thickness between the heterojunction bipolar transistor and the pin-type photodiode is absorbed by the depth of the recessed step portion. For this reason, the pin-type photodiode and the heterojunction bipolar transistor are formed to have almost the same surface level.

摘要翻译： 在本发明的光电集成电路中，在半导体衬底的第一表面区域中，基于形成在第一晶体管层上的光电二极管层构成针型光电二极管。 在半导体衬底的第二表面区域中，基于仅从第一晶体管层分离的第二晶体管层构成异质结双极晶体管。 由于多个异质结双极晶体管通常集成在一个pin型光电二极管中，所以与pin型光电二极管的厚度无关地设定比pin型光电二极管数量大的异质结双极型晶体管的厚度。 针型光电二极管中的高电阻层的厚度设定为增加的自由度。 当半导体衬底的第一表面区域是凹入阶梯部分的内部区域，并且半导体衬底的第二表面区域是凹陷步骤部分的外部区域时，异质结双极晶体管和引脚之间的厚度差 型光电二极管被凹陷台阶部分的深度吸收。 为此，pin型光电二极管和异质结双极晶体管形成为具有几乎相同的表面水平。

公开(公告)号：US5426480A

公开(公告)日：1995-06-20

申请号：US241576

申请日：1994-05-12

申请人： Ryosaku Sawada ,  Kensaku Sawada ,  Kosaku Sawada ,  Sosaku Sawada ,  Mikio Matsui

发明人： Ryosaku Sawada ,  Kensaku Sawada ,  Kosaku Sawada ,  Sosaku Sawada ,  Mikio Matsui

IPC分类号： G03D3/13 ,  G03D3/08 ,  G03D13/02

CPC分类号： G03D3/132

摘要： A photographic film processing apparatus comprises a water tank for containing a constant quantity of fresh water, and one or a plurality of processing units each comprising a pair of feed rollers disposed with their circumferences in close contact with each other, a pair of delivery rollers spaced apart from the pair of feed rollers and disposed with their circumferences in close contact with each other, a pair of sealing rollers disposed with the circumference of one of them in close contact with the circumferences of the top feed roller and the top delivery roller and with the circumference of the other in close contact with the circumferences of the bottom feed roller and the bottom delivery roller, and a pair of support plates disposed respectively on the opposite sides of the rollers so as to support the rollers for rotation and to define a liquid-tight processing chamber by the circumferences of the rollers and the inner surfaces thereof. The processing unit or units are immersed completely in fresh water contained in the water tank, and a processing liquid is circulated through each processing chamber, at a high velocity across the direction of travel of a film in the processing chamber.

摘要翻译： 照相胶片处理装置包括一个用于容纳恒定量的淡水的水箱，以及一个或多个处理单元，每个处理单元包括彼此紧密接触地布置的一对进给辊，一对输送辊间隔开 除了一对进给辊之外，它们的周长彼此紧密接触，一对密封辊设置成其一个的周边与顶部进料辊和顶部输送辊的周边紧密接触，并且与 另一个的圆周与底部进料辊和底部输送辊的周边紧密接触，以及分别设置在辊的相对侧上的一对支撑板，以便支撑辊以旋转并限定液体 该处理室由辊的周向及其内表面组成。 处理单元完全浸没在水箱中的淡水中，并且处理液体以高速跨过处理室中的膜的行进方向循环通过每个处理室。

公开(公告)号：US08362841B2

公开(公告)日：2013-01-29

申请号：US13077099

申请日：2011-03-31

申请人： Makoto Ito ,  Sosaku Sawada

发明人： Makoto Ito ,  Sosaku Sawada

IPC分类号： H03F3/04

CPC分类号： H03F3/45089 ,  H03F2203/45166 ,  H03F2203/45702

摘要： A differential amplifier showing a suppressed output offset is disclosed. The differential amplifier includes a pair of differential transistors, a pair of cascode transistors, and a reference generator. One of differential transistors receives an AC signal, while, the other of differential transistors receives an average voltage of the AC signal. The reference generator receives the average voltage of the AC signal and outputs a bias commonly provided to the cascode transistor. The bias is raised by a substantially constant level from the average voltage, which compensates the output offset of the differential amplifier.

摘要翻译： 公开了一种显示抑制输出偏移的差分放大器。 差分放大器包括一对差分晶体管，一对共源共栅晶体管和参考发生器。 差分晶体管中的一个接收AC信号，而另一个差分晶体管接收AC信号的平均电压。 参考发生器接收AC信号的平均电压，并输出通常提供给共源共栅晶体管的偏置。 偏置电压从平均电压提高到基本恒定的水平，这补偿了差分放大器的输出偏移。

公开(公告)号：US20120032740A1

公开(公告)日：2012-02-09

申请号：US13227618

申请日：2011-09-08

申请人： Hiroshi Hara ,  Sosaku Sawada

发明人： Hiroshi Hara ,  Sosaku Sawada

IPC分类号： H03F3/45

CPC分类号： H03G3/3084

摘要： An amplifier for receiving an optical signal is disclosed. The amplifier provides a response time controller including an integrator with two time constants, a linear amplifier, a hysteresis comparator, an another integrator, and a switch to change the time constant. The switch includes two voltage followers, one of which turns off the switch to set the time constant in a longer state; while, the other of which turns on the switch and reflects the input of the integrator to set the time constant in a shorter state.

摘要翻译： 公开了一种用于接收光信号的放大器。 放大器提供响应时间控制器，包括具有两个时间常数的积分器，线性放大器，迟滞比较器，另一个积分器以及改变时间常数的开关。 开关包括两个电压跟随器，其中一个关闭开关以将时间常数设置在较长的状态; 而另一个则打开开关并反映积分器的输入，以将时间常数设置在较短的状态。

公开(公告)号：US07755434B2

公开(公告)日：2010-07-13

申请号：US12167579

申请日：2008-07-03

申请人： Hiroshi Hara ,  Sosaku Sawada

发明人： Hiroshi Hara ,  Sosaku Sawada

IPC分类号： H03F3/08

CPC分类号： H03F3/45475 ,  H03F1/08 ,  H03F3/087 ,  H03F2203/45138 ,  H03F2203/45618

摘要： An electronic circuit includes a differential amplifier circuit, a first smoothing circuit, a second smoothing circuit and a first switch. The differential amplifier circuit receives a digital input signal and a reference signal. The first smoothing circuit smoothes the digital input signal with a first capacitance value. The second smoothing circuit smoothes the digital input signal with a second capacitance value larger than the first capacitance value. The first switch selects one of output signals from the first smoothing circuit and the second smoothing circuit as the reference signal.

摘要翻译： 电子电路包括差分放大器电路，第一平滑电路，第二平滑电路和第一开关。 差分放大器电路接收数字输入信号和参考信号。 第一平滑电路以第一电容值平滑数字输入信号。 第二平滑电路以大于第一电容值的第二电容值平滑数字输入信号。 第一开关选择来自第一平滑电路和第二平滑电路的输出信号之一作为参考信号。

公开(公告)号：US5880582A

公开(公告)日：1999-03-09

申请号：US922682

申请日：1997-09-03

申请人： Sosaku Sawada

发明人： Sosaku Sawada

IPC分类号： H03L5/00 ,  G05F3/26 ,  H03F3/343 ,  G05F3/16

CPC分类号： G05F3/262

摘要： A plurality of n-channel FETs in predetermined combinations are grouped two by two into pairs, and their respective gates and sources are connected to each other in a crossing manner, thus forming a first current mirror circuit connected to a higher-potential side power supply. A second current mirror circuit constituted by another plurality of n-channel FETs, diodes, and a variable resistor, which is connected to a lower-potential side power supply, is connected to the first current mirror circuit connected to the higher-potential side power supply, thereby forming a reference voltage generating circuit which generates a constant voltage. Further, three other pieces of n-channel FETs biased by this constant voltage, a diode, and the like constitute a light emitting element driving circuit for driving a light emitting element.

摘要翻译： 预定组合中的多个n沟道FET被成对分成两组，并且它们各自的栅极和源以交叉的方式彼此连接，从而形成连接到高电位侧电源的第一电流镜电路 。 连接到低电位侧电源的另外多个n沟道FET，二极管和可变电阻构成的第二电流镜电路连接到与高电位侧电源相连的第一电流镜电路 从而形成产生恒定电压的参考电压产生电路。 此外，由该恒定电压偏置的三个其它n沟道FET，二极管等构成用于驱动发光元件的发光元件驱动电路。