公开(公告)号：US07868702B2

公开(公告)日：2011-01-11

申请号：US11861819

申请日：2007-09-26

申请人： Masaya Ohnishi

发明人： Masaya Ohnishi

IPC分类号： H03F3/08

CPC分类号： H03F3/087 ,  H03F1/26 ,  H03F3/45085 ,  H03F3/45475 ,  H03F3/456 ,  H03F3/45973 ,  H03F2203/45212 ,  H03F2203/45528 ,  H03F2203/45536 ,  H03F2203/45618

摘要： The subject invention provides a photoreceiver/amplifier circuit comprising a differential circuit including a differential transistor pair and a bias circuit; an active load; a feedback resistor for converting a photocurrent generated from a photodiode into a voltage; a reference resistor; and a compensation circuit. The resistance of the feedback resistor is greater than the resistance of the reference resistor. The compensation circuit supplies a compensation current from a junction between the feedback resistor and a non-inverting input terminal of the differential amplifier circuit, so as to cancel the difference between a voltage between terminals of the feedback resistor and a voltage between terminals of the reference resistor. This reduces noise and improves offset voltage characteristics. The present invention provides a photoreceiver/amplifier circuit ensuring noise reduction and desirable offset voltage characteristics.

摘要翻译： 本发明提供一种光接收器/放大器电路，其包括包括差分晶体管对和偏置电路的差分电路; 有功负载; 用于将从光电二极管产生的光电转换成电压的反馈电阻器; 参考电阻; 和补偿电路。 反馈电阻的电阻大于参考电阻的电阻。 补偿电路从反馈电阻和差分放大器电路的非反相输入端之间的接点提供补偿电流，以消除反馈电阻的端子之间的电压与参考电压的端子之间的电压之间的差值 电阻。 这降低了噪声并改善了失调电压特性。 本发明提供一种确保噪声降低和期望的失调电压特性的光接收器/放大器电路。

公开(公告)号：US5483200A

公开(公告)日：1996-01-09

申请号：US257741

申请日：1994-06-08

申请人： Naonori Okabayashi ,  Koichi Hanafusa ,  Masaya Ohnishi

发明人： Naonori Okabayashi ,  Koichi Hanafusa ,  Masaya Ohnishi

IPC分类号： H03F3/08 ,  H03G1/00 ,  H03G3/30 ,  H03G3/12

CPC分类号： H03G1/0088 ,  H03F3/08 ,  H03G3/3084

摘要： There is provided a light-receiving and amplifying device capable of changing its gain at high speed. A cathode of a photodiode PD is connected to a power source V.sub.CC via a current mirror circuit. An anode of the photodiode PD is connected to an input of an amplifier circuit AMP. The amplifier circuit AMP receives a photocurrent from the photodiode PD, converts the photocurrent into a voltage, and amplifies the voltage to form an output signal V.sub.OUT. A control signal of a current having the same magnitude as that of the photocurrent and output from the current mirror circuit is input to a control input terminal of a gain switching circuit. The gain switching circuit is composed of a resistor Rf.sub.1, a resistor Rf.sub.2, and a switch SW. The resistor Rf.sub.1 is connected across the input and the output of the amplifier circuit AMP, and the resistor Rf.sub.2 and the switch SW connected in series are connected across the input and the output of the amplifier circuit AMP.

摘要翻译： 提供能够以高速度改变其增益的光接收放大装置。 光电二极管PD的阴极通过电流镜电路连接到电源VCC。 光电二极管PD的阳极连接到放大器电路AMP的输入端。 放大电路AMP从光电二极管PD接收光电流，将光电流转换为电压，并放大电压以形成输出信号VOUT。 具有与电流镜像电路相同幅值的电流的控制信号输入到增益切换电路的控制输入端。 增益切换电路由电阻Rf1，电阻Rf2和开关SW组成。 电阻器Rf1连接在放大器电路AMP的输入和输出端上，串联连接的电阻器Rf2和开关SW跨过放大器电路AMP的输入端和输出端。

公开(公告)号：US06878202B2

公开(公告)日：2005-04-12

申请号：US10112700

申请日：2002-04-02

申请人： Masaya Ohnishi ,  Kenya Itani ,  Seiji Mizuniwa ,  Hiroshi Sasabe ,  Inao Fujisaki

发明人： Masaya Ohnishi ,  Kenya Itani ,  Seiji Mizuniwa ,  Hiroshi Sasabe ,  Inao Fujisaki

IPC分类号： C30B11/00 ,  C30B11/14 ,  C30B29/42 ,  H01L21/208 ,  C30B15/24

CPC分类号： C30B29/40 ,  C30B11/14 ,  C30B29/42 ,  C30B29/48

摘要： A method for growing a compound semiconductor single crystal comprising cooling a starting material melt of a compound semiconductor with an upward increasing temperature gradient in a crystal-growing container having a seed crystal placed at a lower end, thereby growing a single crystal upward from the seed crystal, the crystal orientation of the seed crystal in a crystal growth axis direction being an offset orientation of +θ, wherein the offset angle θ is 2°≦θ≦55°.

摘要翻译： 一种用于生长化合物半导体单晶的方法，包括在具有位于下端的晶种的晶体生长容器中以向上升高的温度梯度冷却化合物半导体的原料熔体，从而从晶种向上生长单晶 晶体，晶体生长轴方向上的晶种的晶体取向为<100 +θ的偏移取向，其中偏移角θ为2°θ= 55°。

公开(公告)号：US07002881B2

公开(公告)日：2006-02-21

申请号：US10461596

申请日：2003-06-12

申请人： Takanori Okuda ,  Masaya Ohnishi

发明人： Takanori Okuda ,  Masaya Ohnishi

IPC分类号： G11B7/00

CPC分类号： G11B7/131 ,  G11B7/005 ,  G11B7/1275 ,  G11B2007/0006

摘要： The object of the invention is to provide a light receiving amplification element applicable to an optical pickup apparatus comprising a semiconductor two-wavelength laser element and one condensing lens. The light receiving amplification element is provided with a plurality of light receiving portions corresponding to different wavelengths, a plurality of trans-impedance type amplifiers connected to the light receiving portions according to the different wavelengths and adaptable to the different wavelengths and switching portion for switching output from the trans-impedance type amplifier according to each of the wavelengths.

公开(公告)号：US20080074198A1

公开(公告)日：2008-03-27

申请号：US11861819

申请日：2007-09-26

申请人： Masaya OHNISHI

发明人： Masaya OHNISHI

IPC分类号： H03F3/08

CPC分类号： H03F3/087 ,  H03F1/26 ,  H03F3/45085 ,  H03F3/45475 ,  H03F3/456 ,  H03F3/45973 ,  H03F2203/45212 ,  H03F2203/45528 ,  H03F2203/45536 ,  H03F2203/45618

摘要： The subject invention provides a photoreceiver/amplifier circuit comprising a differential circuit including a differential transistor pair and a bias circuit; an active load; a feedback resistor for converting a photocurrent generated from a photodiode into a voltage; a reference resistor; and a compensation circuit. The resistance of the feedback resistor is greater than the resistance of the reference resistor. The compensation circuit supplies a compensation current from a junction between the feedback resistor and a non-inverting input terminal of the differential amplifier circuit, so as to cancel the difference between a voltage between terminals of the feedback resistor and a voltage between terminals of the reference resistor. This reduces noise and improves offset voltage characteristics. The present invention provides a photoreceiver/amplifier circuit ensuring noise reduction and desirable offset voltage characteristics.

摘要翻译： 本发明提供一种光接收器/放大器电路，其包括包括差分晶体管对和偏置电路的差分电路; 有功负载; 用于将从光电二极管产生的光电转换成电压的反馈电阻器; 参考电阻; 和补偿电路。 反馈电阻的电阻大于参考电阻的电阻。 补偿电路从反馈电阻和差分放大器电路的非反相输入端之间的接点提供补偿电流，以消除反馈电阻的端子之间的电压与参考电压的端子之间的电压之间的差值 电阻。 这降低了噪声并改善了失调电压特性。 本发明提供一种确保噪声降低和期望的失调电压特性的光接收器/放大器电路。

公开(公告)号：US07175707B2

公开(公告)日：2007-02-13

申请号：US10393984

申请日：2003-03-24

申请人： Kenya Itani ,  Masaya Ohnishi ,  Shinji Komata ,  Seiji Mizuniwa

发明人： Kenya Itani ,  Masaya Ohnishi ,  Shinji Komata ,  Seiji Mizuniwa

IPC分类号： C30B11/04

CPC分类号： C30B11/00 ,  C30B29/42

摘要： A p-type GaAs single crystal containing Si, Zn, B and In as dopants has an average dislocation density of 100 cm−2 or less. It may be produced by cooling a GaAs melt containing Si, Zn, B and In as dopants in a crystal-growing container having a seed crystal placed at a lower end thereof in an upward increasing temperature gradient, to cause a single crystal to grow upward from the seed crystal.

摘要翻译： 含有Si，Zn，B和In作为掺杂剂的p型GaAs单晶的平均位错密度为100cm -2以下。 可以通过将含有Si，Zn，B和In的GaAs熔体作为掺杂剂在具有放置在其下端的晶种的晶体生长容器中以向上升高的温度梯度冷却来产生，从而使单晶向上生长 从晶种。

公开(公告)号：US06333383B1

公开(公告)日：2001-12-25

申请号：US09583860

申请日：2000-06-01

申请人： Masaya Ohnishi

发明人： Masaya Ohnishi

IPC分类号： C08L6702

CPC分类号： C08L53/025 ,  C08L63/08 ,  C08L67/02 ,  Y10S525/932 ,  C08L2666/14 ,  C08L2666/18 ,  C08L53/00

摘要： A non-crystalline polyester resin composition of the present invention is excellent in processing properties of its molding, mechanical properties and chemical properties, in addition to its moldability, and is used in a variety of fields, which comprises 50 to 99% by weight of a non-crystalline polyester resin (component A) and 1 to 50% by weight of an epoxy-modified block copolymer (component B), total amount of the components A and B being 100, component B being obtained by epoxidation of a block copolymer (B3) comprising a polymer block (B1) containing mainly a unit based on a vinyl aromatic compound and a polymer block (B2) containing mainly a unit based on a conjugated diene compound, an epoxy equivalent of the component B being in the range of 400 to 7,500, and an absolute difference-value of the refractive index between the components A and B being 0.008 or less.

摘要翻译： 本发明的非结晶性聚酯树脂组合物除了成型性以外，其成型加工性，机械特性，化学性质优异，可用于各种领域，包括50〜99重量％ 非结晶性聚酯树脂（A成分）和1〜50重量％的环氧改性嵌段共聚物（B成分），成分A和B的总量为100，B成分是通过环氧化嵌段共聚物 （B3）包含主要包含基于乙烯基芳族化合物的单元的聚合物嵌段（B1）和主要包含基于共轭二烯化合物的单元的聚合物嵌段（B2），组分B的环氧当量在 400至7,500，并且组分A和B之间的折射率的绝对差值为0.008以下。