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公开(公告)号：US20050063710A1
公开(公告)日：2005-03-24
申请号：US10496687
申请日：2002-11-28
CPC分类号： H04B10/504
摘要： The present invention is intended to prevent a light-emitting diode from emitting light continuously in the case when the level at an input terminal is fixed high because of software or the like and to avoid various problems, such as battery exhaustion and breakdown of the light-emitting diode, in PDAs, cellular phones, etc. For these purposes, a high-pass filter 21 for passing the high-frequency components of an optical transmission input signal having a pulse waveform and a binary circuit 22 for binarizing the output signal of the high-pass filter 21 so as to be returned to a pulse waveform are provided in the preceding stage of a light-emitting device driving circuit 23 for driving a light-emitting diode 8 for optical transmission.
摘要翻译： 本发明是为了防止发光二极管由于软件等而在输入端子的电平固定为高的情况下连续地发光，并且避免诸如电池耗尽和光的破坏等各种问题 用于PDA，蜂窝电话等。为了这些目的，高通滤波器21用于使具有脉冲波形的光传输输入信号的高频分量和二进制电路22二值化，以将 在用于驱动用于光传输的发光二极管8的发光装置驱动电路23的前级中设置高通滤波器21以返回到脉冲波形。
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公开(公告)号：US07298977B2
公开(公告)日：2007-11-20
申请号：US10496687
申请日：2002-11-28
CPC分类号： H04B10/504
摘要： The present invention is intended to prevent a light-emitting diode from emitting light continuously in the case when the level at an input terminal is fixed high because of software or the like and to avoid various problems, such as battery exhaustion and breakdown of the light-emitting diode, in PDAs, cellular phones, etc. For these purposes, a high-pass filter 21 for passing the high-frequency components of an optical transmission input signal having a pulse waveform and a binary circuit 22 for binarizing the output signal of the high-pass filter 21 so as to be returned to a pulse waveform are provided in the preceding stage of a light-emitting device driving circuit 23 for driving a light-emitting diode 8 for optical transmission.
摘要翻译： 本发明是为了防止发光二极管由于软件等而在输入端子的电平固定为高的情况下连续地发光，并且避免诸如电池耗尽和光的破坏等各种问题 用于PDA，蜂窝电话等。为了这些目的，高通滤波器21用于使具有脉冲波形的光传输输入信号的高频分量和二进制电路22二值化，以将 在用于驱动用于光传输的发光二极管8的发光装置驱动电路23的前级中设置高通滤波器21以返回到脉冲波形。
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公开(公告)号：US06700144B2
公开(公告)日：2004-03-02
申请号：US10155470
申请日：2002-05-24
IPC分类号： H01L31062
CPC分类号： H01L21/8249 , H01L27/0623
摘要： A semiconductor device includes the following: a semiconductor substrate of a first conduction type; an intrinsic semiconductor layer of the first conduction type formed on the semiconductor substrate; a first semiconductor layer of a second conduction type formed on the intrinsic semiconductor layer; a first impurity layer of the first conduction type formed in the first semiconductor layer of the second conduction type; and a bipolar transistor and a MIS transistor formed in the first semiconductor layer of the second conduction type. The laminated structure of the semiconductor substrate, the intrinsic semiconductor layer, and the first semiconductor layer provides a diode for photoelectric conversion. A first insulator layer and a second insulator layer are formed respectively in at least a portion below the bipolar transistor and the MIS transistor. The transistors are isolated from the semiconductor substrate by the insulator layers, so that the characteristics of the transistors can be adjusted independently of the diode.
摘要翻译： 半导体器件包括：第一导电类型的半导体衬底; 形成在半导体衬底上的第一导电类型的本征半导体层; 形成在本征半导体层上的第二导电类型的第一半导体层; 形成在第二导电类型的第一半导体层中的第一导电类型的第一杂质层; 以及形成在第二导电类型的第一半导体层中的双极晶体管和MIS晶体管。 半导体衬底，本征半导体层和第一半导体层的层叠结构提供用于光电转换的二极管。 分别在双极晶体管和MIS晶体管的至少一部分内形成第一绝缘体层和第二绝缘体层。 晶体管通过绝缘体层与半导体衬底隔离，从而可以独立于二极管来调整晶体管的特性。
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公开(公告)号：US20070228258A1
公开(公告)日：2007-10-04
申请号：US11687715
申请日：2007-03-19
IPC分类号： H03F3/08
CPC分类号： H03F3/087 , H03F1/34 , H03F3/45085 , H03F3/45475 , H03F2203/45106 , H03F2203/45528 , H03F2203/45534 , H03F2203/45536 , H03F2203/45634 , H03F2203/45636 , H03F2203/45682 , H03F2203/45684 , H03F2203/45722 , H03G1/0088
摘要： An amplifier circuit according to the present invention includes: a first operational amplifier having a negative input terminal, a positive input terminal, and an output terminal; a photodiode connected to the negative input terminal; a first resistor inserted between the output terminal and the negative input terminal; and a second resistor inserted between the output terminal and the positive input terminal, in which the amplifier circuit outputs current from the output terminal via the second resistor.
摘要翻译： 根据本发明的放大器电路包括：具有负输入端，正输入端和输出端的第一运算放大器; 连接到负输入端的光电二极管; 插入在所述输出端子和所述负极端子之间的第一电阻器; 以及插入在输出端子和正输入端子之间的第二电阻器，其中放大器电路经由第二电阻器从输出端子输出电流。
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5.发明授权Test circuit and test method that includes supplying a current to a plurality of light-receiving elements 失效包括向多个光接收元件提供电流的测试电路和测试方法公开(公告)号：US07545156B2
公开(公告)日：2009-06-09
申请号：US11677077
申请日：2007-02-21
申请人： Yousuke Kuroiwa , Hideo Fukuda , Hiroshi Yamaguchi , Tetsuo Chato , Yuzo Shimizu , Masaki Taniguchi
发明人： Yousuke Kuroiwa , Hideo Fukuda , Hiroshi Yamaguchi , Tetsuo Chato , Yuzo Shimizu , Masaki Taniguchi
CPC分类号： H03F3/087 , G01R31/025 , H03F3/45475 , H03F2200/252 , H03F2203/45564
摘要： The test circuit according to the present invention includes: a plurality of light-receiving elements; a plurality of amplifiers, each of which converts, into a voltage, a photoelectric current supplied from one of the light-receiving elements; and an electric current supplying unit which supplies an electric current to each of the light-receiving elements and each of the amplifiers. In this test circuit, the electric current supplying unit selectively supplies an electric current to a first group of light-receiving elements and to a second group of light-receiving elements, the first group of light-receiving elements including light-receiving elements, out of the plurality of light-receiving elements, which are neither vertically nor horizontally adjacent to each other, and the second group of light-receiving elements including light-receiving elements, out of the plurality of light-receiving elements, which are vertically or horizontally adjacent to the light-receiving elements of the first group of light-receiving elements.
摘要翻译： 根据本发明的测试电路包括：多个光接收元件; 多个放大器，每个放大器将从一个光接收元件提供的光电流转换成电压; 以及电流供应单元，其向每个光接收元件和每个放大器提供电流。 在该测试电路中，电流供给单元选择性地将电流提供给第一组光接收元件和第二组光接收元件，第一组光接收元件包括光接收元件 多个光接收元件彼此不垂直或水平相邻，并且包括在垂直或水平方向上的多个光接收元件中的包含光接收元件的第二组光接收元件 邻近第一组光接收元件的光接收元件。
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公开(公告)号：US07449670B2
公开(公告)日：2008-11-11
申请号：US11687715
申请日：2007-03-19
IPC分类号： H03F3/08
CPC分类号： H03F3/087 , H03F1/34 , H03F3/45085 , H03F3/45475 , H03F2203/45106 , H03F2203/45528 , H03F2203/45534 , H03F2203/45536 , H03F2203/45634 , H03F2203/45636 , H03F2203/45682 , H03F2203/45684 , H03F2203/45722 , H03G1/0088
摘要： An amplifier circuit according to the present invention includes: a first operational amplifier having a negative input terminal, a positive input terminal, and an output terminal; a photodiode connected to the negative input terminal; a first resistor inserted between the output terminal and the negative input terminal; and a second resistor inserted between the output terminal and the positive input terminal, in which the amplifier circuit outputs current from the output terminal via the second resistor.
摘要翻译： 根据本发明的放大器电路包括：具有负输入端，正输入端和输出端的第一运算放大器; 连接到负输入端的光电二极管; 插入在输出端子和负输入端子之间的第一电阻器; 以及插入在输出端子和正输入端子之间的第二电阻器，其中放大器电路经由第二电阻器从输出端子输出电流。
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7.发明授权公开(公告)号：US07408141B2
公开(公告)日：2008-08-05
申请号：US11428422
申请日：2006-07-03
申请人： Tetsuo Chato , Hiroshi Yamaguchi
发明人： Tetsuo Chato , Hiroshi Yamaguchi
IPC分类号： H01J40/14
CPC分类号： H03F3/08 , H03F3/087 , H03F3/45085 , H03F2203/45618 , H03F2203/45722 , H03F2203/45728
摘要： The present invention provides a light-receiving amplifier circuit which includes a clipping circuit, can prevent an oscillation at the time of clipping operation, and can freely set clipping voltage. The light-receiving circuit of the present invention includes a photodiode, an operation amplifier, a conversion resistance connected between an output terminal and an inverting input terminal of the operation amplifier, and a clipping circuit which clips output voltage of the operation amplifier to a predetermined value. The clipping circuit includes a PNP transistor which detects a change in the output voltage of the operation amplifier and a voltage source connected to a base of the PNP transistor. Here, when the PNP transistor is turned ON along with an increase of an emitter potential of the NPN transistor which constitutes an output amplifier stage of the operation amplifier, voltage from the voltage source is applied to the base of the NPN transistor via the PNP transistor.
摘要翻译： 本发明提供了一种包含限幅电路的光接收放大器电路，可以防止在削波操作时的振荡，并且可以自由地设定限幅电压。 本发明的光接收电路包括：光电二极管，运算放大器，连接在运算放大器的输出端和反相输入端之间的转换电阻;以及削波电路，其将运算放大器的输出电压除以预定的 值。 限幅电路包括PNP晶体管，其检测运算放大器的输出电压的变化和连接到PNP晶体管的基极的电压源。 这里，当构成运算放大器的输出放大器级的NPN晶体管的发射极电位的增加，当PNP晶体管导通时，来自电压源的电压经由PNP晶体管施加到NPN晶体管的基极 。
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8.发明申请公开(公告)号：US20070018079A1
公开(公告)日：2007-01-25
申请号：US11428422
申请日：2006-07-03
申请人： Tetsuo Chato , Hiroshi Yamaguchi
发明人： Tetsuo Chato , Hiroshi Yamaguchi
IPC分类号： H03F3/08
CPC分类号： H03F3/08 , H03F3/087 , H03F3/45085 , H03F2203/45618 , H03F2203/45722 , H03F2203/45728
摘要： The present invention provides a light-receiving amplifier circuit which includes a clipping circuit, can prevent an oscillation at the time of clipping operation, and can freely set clipping voltage. The light-receiving circuit of the present invention includes a photodiode, an operation amplifier, a conversion resistance connected between an output terminal and an inverting input terminal of the operation amplifier, and a clipping circuit which clips output voltage of the operation amplifier to a predetermined value. The clipping circuit includes a PNP transistor which detects a change in the output voltage of the operation amplifier and a voltage source connected to a base of the PNP transistor. Here, when the PNP transistor is turned ON along with an increase of an emitter potential of the NPN transistor which constitutes an output amplifier stage of the operation amplifier, voltage from the voltage source is applied to the base of the NPN transistor via the PNP transistor.
摘要翻译： 本发明提供了一种包含限幅电路的光接收放大器电路，可以防止在削波操作时的振荡，并且可以自由地设定限幅电压。 本发明的光接收电路包括：光电二极管，运算放大器，连接在运算放大器的输出端和反相输入端之间的转换电阻;以及削波电路，其将运算放大器的输出电压除以预定的 值。 限幅电路包括PNP晶体管，其检测运算放大器的输出电压的变化和连接到PNP晶体管的基极的电压源。 这里，当构成运算放大器的输出放大器级的NPN晶体管的发射极电位的增加，当PNP晶体管导通时，来自电压源的电压经由PNP晶体管施加到NPN晶体管的基极 。
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