专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20120032740A1 AMPLIFIER FOR RECEIVING INTERMITTENT OPTICAL SIGNAL 有权
标题翻译：用于接收间接光信号的放大器
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。

2. 发明授权

US07755434B2 Electronic circuit 失效
标题翻译：电子电路
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。

3. 发明授权

US08390383B2 Amplifier for receiving intermittent optical signal 有权
标题翻译：用于接收间歇光信号的放大器
公开(公告)号：US08390383B2
公开(公告)日：2013-03-05
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： H03F3/08
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。

4. 发明授权

US06567441B2 Source follower circuit, laser driving apparatus, semiconductor laser apparatus, current-voltage convertion circuit, and light receiving circuit 有权
公开(公告)号：US06567441B2
公开(公告)日：2003-05-20
申请号：US09841694
申请日：2001-03-29
申请人： Seigo Furudate , Eiji Tsumura , Sosaku Sawada , Hiroshi Hara
发明人： Seigo Furudate , Eiji Tsumura , Sosaku Sawada , Hiroshi Hara
IPC分类号： H01S300
CPC分类号： H01S5/042 , H01S5/0683
摘要： Provided are a source follower circuit having a current source having its improved current characteristics, laser driving apparatus, semiconductor laser apparatus, current-voltage conversion circuit, and light receiving circuit. Each of the laser driving apparatus, semiconductor laser apparatus, current-voltage conversion circuit, and light receiving circuit comprises the source follower circuit. The source follower circuit 10 comprises a source follower stage 12 and a bias stage 14. The source follower stage has III-V compound semiconductor transistors 16, 18 and 20. The bias stage 14 has a first node 22 for providing a first bias voltage and a second node 24 for providing a second biasing voltage different from the first biasing voltage. The gate of transistor 16 is coupled to input 26 and a source thereof is coupled to output 28. The gate of transistor 18 is connected to the second node 24. The gate of transistor 20 is connected to the first node 24. The transistor 20 is arranged between the source of the transistor 16 and the drain of the transistor 18.

5. 发明授权

US08816772B2 Differential amplifier with function of variable gain and optical receiver implemented with the same 有权
标题翻译：具有可变增益功能的差分放大器和实现的光接收器
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。

6. 发明授权

US08704592B2 Traveling wave amplifier with pre-emphasis function 有权
标题翻译：具有预加重功能的行波放大器
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。

7. 发明授权

US5596665A Optical module having structure for defining fixing position of sleeve 失效
标题翻译：光学模块具有用于限定套筒固定位置的结构
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。

8. 发明授权

US5489798A Opto-electronic integrated circuit 失效
标题翻译：光电集成电路
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。

9. 发明授权

US5426480A Photographic film processing apparatus 失效
标题翻译：摄影胶片处理装置
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。

10. 发明申请

US20120018622A1 DIFFERENTIAL AMPLIFIER WITH FUNCTION OF VARIABLE GAIN AND OPTICAL RECEIVER IMPLEMENTED WITH THE SAME 有权
标题翻译：具有可变增益和光接收器功能的差分放大器
公开(公告)号：US20120018622A1
公开(公告)日：2012-01-26
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： H03F3/08 , 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式