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11. 发明授权

US6137101A Light receiving amplifying device 有权
标题翻译：光接收放大装置
公开(公告)号：US6137101A
公开(公告)日：2000-10-24
申请号：US132412
申请日：1998-08-11
申请人： Naruichi Yokogawa , Takanori Okuda , Takayuki Shimizu
发明人： Naruichi Yokogawa , Takanori Okuda , Takayuki Shimizu
IPC分类号： H03F3/08 , H04B10/116 , H04B10/40 , H04B10/50 , H04B10/60 , H01J40/14
CPC分类号： H04B10/114
摘要： A light receiving amplifying device includes a light receiving device for outputting a light signal current which varies with a quantity of received light, a load resistor connected with the light receiving device in series, for generating a detected voltage which varies with the light signal current, and a low frequency current bypass circuit for preventing the detected voltage from being saturated when the detected voltage has a frequency in a low frequency band. The low frequency current bypass circuit is connected with the load resistor in parallel and has an input impedance varying with a frequency of the detected voltage. The device further includes a transimpedance amplifying circuit (inverting amplifying circuit) for transforming an impedance of the detected voltage, and a capacitor for coupling the low frequency current bypass circuit and the transimpedance amplifying circuit (inverting amplifying circuit). This makes it possible, with a relatively simple circuit and arrangement in an infrared communication receiver, to lower noises of the light receiving amplifying device while maintaining an operational range with respect to a DC photoelectric current.
摘要翻译：光接收放大装置包括：光接收装置，用于输出随接收光量变化的光信号电流;串联连接光负载电阻器的负载电阻，用于产生随光信号电流变化的检测电压; 以及低频电流旁路电路，用于当检测电压具有低频带中的频率时，防止检测电压饱和。低频电流旁路电路与负载电阻并联连接，输入阻抗随检测电压的频率而变化。该装置还包括用于变换检测电压的阻抗的跨阻放大电路（反相放大电路），以及用于耦合低频电流旁路电路和跨阻放大电路（反相放大电路）的电容器。这使得在红外线通信接收机中相对简单的电路和布置可以在保持相对于DC光电流的操作范围的同时降低光接收放大装置的噪声。

12. 发明授权

US5321254A Light-receiving and amplyfying device capable of widening an AC operation range 失效
标题翻译：光接收装置能够扩大AC工作范围
公开(公告)号：US5321254A
公开(公告)日：1994-06-14
申请号：US67150
申请日：1993-05-26
申请人： Naruichi Yokogawa , Naonori Okabayashi , Koichi Hanafusa
发明人： Naruichi Yokogawa , Naonori Okabayashi , Koichi Hanafusa
IPC分类号： G11B7/13 , H03F3/08 , H03F3/343 , H03F3/347 , H01J40/14
CPC分类号： H03F3/087 , G11B7/13
摘要： A light-receiving and amplifying device includes a plurality of photodiodes and amplifier circuits which receive inputs from anodes of the photodiodes. There is provided a first current mirror circuit for outputting a second current having the same magnitude as that of a first current which is a sum of currents flowing through cathodes of the photodiodes. Further provided is a second current mirror circuit which receives the second current from the first current mirror circuit and receives divided currents each having an even magnitude from the anodes of the photodiodes. An AC operation range of the light-receiving and amplifying device is widened in a simple manner at a low cost without significant dimensional increase of the device.
摘要翻译：光接收和放大装置包括多个光电二极管和放大器电路，其接收来自光电二极管的阳极的输入。提供了第一电流镜电路，用于输出与作为流过光电二极管的阴极的电流之和的第一电流具有相同幅度的第二电流。还提供了第二电流镜电路，其接收来自第一电流镜电路的第二电流，并且从光电二极管的阳极接收各自具有均匀幅度的分压电流。光接收放大装置的AC操作范围以简单的方式以较低的成本加宽，而不会显着地增加装置的尺寸。

13. 发明授权

US08050572B2 Receiver and electronic device 失效
标题翻译：接收机和电子设备
公开(公告)号：US08050572B2
公开(公告)日：2011-11-01
申请号：US12127680
申请日：2008-05-27
申请人： Isamu Kawabe , Naruichi Yokogawa
发明人： Isamu Kawabe , Naruichi Yokogawa
IPC分类号： H04B10/06
CPC分类号： H04B10/695 , H03F3/087 , H03K5/1252 , H04B10/1149
摘要： An abnormal pulse detection circuit in a receiver of the present invention includes: an incoming pulse edge detection circuit which detects the moment of rise of an input signal and outputs the result of the detection as an edge detection signal; a muting reference pulse generation circuit which generates a muting reference pulse based on the edge detection signal; a logic circuit which outputs a signal indicating a negative AND of the muting reference pulse and the input signal; a muting signal generation circuit which generates a muting signal from the output signal of the logic circuit; and a switching circuit which outputs the input signal or the muting signal. The receiver of the present invention can therefore reduce discomfort in hearing reproduced sound in case where a noise occurs in an audio signal due to a variation in pulse width.
摘要翻译：本发明的接收机中的异常脉冲检测电路包括：输入脉冲沿检测电路，其检测输入信号的上升沿，并将检测结果作为边缘检测信号输出; 静噪参考脉冲发生电路，其基于边缘检测信号产生静噪参考脉冲; 逻辑电路，其输出指示所述静默基准脉冲和所述输入信号的否定AND的信号; 静噪信号产生电路，从逻辑电路的输出信号产生静噪信号; 以及输出输入信号或静音信号的切换电路。因此，由于脉冲宽度的变化，在音频信号中产生噪声的情况下，本发明的接收机可以减少对再现声音的不适。

14. 发明申请

US20090067854A1 OPTICAL SPACE COMMUNICATION RECEPTION CIRCUIT, OPTICAL SPACE COMMUNICATION DEVICE, OPTICAL SPACE COMMUNICATION SYSTEM, AND ELECTRONIC DEVICE 审中-公开
标题翻译：光学通信接收电路，光通信设备，光通信系统和电子设备
公开(公告)号：US20090067854A1
公开(公告)日：2009-03-12
申请号：US12129493
申请日：2008-05-29
申请人： Naruichi YOKOGAWA , Takeshi Nishino , Hitoshi Naoe
发明人： Naruichi YOKOGAWA , Takeshi Nishino , Hitoshi Naoe
IPC分类号： H04B10/06
CPC分类号： H04B10/1141
摘要： An optical space communication reception circuit receives a signal in switched-over communication speed modes and under settings corresponding to the communication speed modes. Receiver sensitivity in the respective communication speed modes is set in advance such that maximum communicable distances in the communication speed modes are substantially equal. By this, it becomes possible, for example, in optical space transmission such as infrared communication and the like to enhance a false operation prevention characteristic against disturbance noise, without decreasing maximum communicable distances.
摘要翻译：光学空间通信接收电路接收切换通信速度模式和对应于通信速度模式的设置的信号。预先设定各通信速度模式中的接收机灵敏度，使得通信速度模式中的最大可通信距离基本相等。由此，例如在诸如红外线通信等的光学空间传输中，可以在不降低最大通信距离的情况下增强防止干扰噪声的假操作防止特性。

15. 发明授权

US07437084B2 Infrared radiation receiving circuit, electronic device, and infrared radiation receiving method 失效
标题翻译：红外辐射接收电路，电子设备和红外辐射接收方法
公开(公告)号：US07437084B2
公开(公告)日：2008-10-14
申请号：US10968968
申请日：2004-10-21
申请人： Naruichi Yokogawa , Hiroaki Itoh , Takeshi Nishino , Ryosuke Kawashima
发明人： Naruichi Yokogawa , Hiroaki Itoh , Takeshi Nishino , Ryosuke Kawashima
IPC分类号： H04B10/06
CPC分类号： H04B10/11
摘要： A receiving circuit stops a one shot timer from generating an output signal immediately after the output signal is outputted to an external entity until a predetermined stretch time elapses. With this arrangement, the receiving circuit will not generate a new output signal even if (i) noises generated by a voltage fluctuation of the output signal appear on an amplified signal immediately after the output signal is outputted (at the end of the output), and (ii) the value of the amplified signal exceeds a threshold value. Therefore, the receiving circuit can make sure that an unnecessary output signal will not be generated due to the noises.
摘要翻译：接收电路在输出信号输出到外部实体之后立即停止单触发定时器产生输出信号，直到经过预定的延伸时间。通过这种布置，即使（i）输出信号的电压波动产生的噪声出现在输出信号紧接在输出信号（输出结束）之后的放大信号中，接收电路也不会产生新的输出信号，和（ii）放大信号的值超过阈值。因此，接收电路可以确保由于噪声而不会产生不必要的输出信号。

16. 发明授权

US07157684B2 Receiving circuit for free-space optical communication 有权
标题翻译：自由空间光通信接收电路
公开(公告)号：US07157684B2
公开(公告)日：2007-01-02
申请号：US10928087
申请日：2004-08-30
申请人： Hiroaki Itoh , Naruichi Yokogawa , Takao Matsui
发明人： Hiroaki Itoh , Naruichi Yokogawa , Takao Matsui
IPC分类号： G01J1/44 , H03F3/08 , H04B10/06
CPC分类号： H03F3/08
摘要： An amplifier circuit amplifies the difference between an output voltage from a current voltage conversion circuit and a bias voltage. The current voltage conversion circuit converts a photocurrent of a photodiode which detect incoming light into a voltage. A gm-amp charges or discharges a capacity by a current corresponding to the difference between the output voltage from the amplifier circuit and a reference voltage. A field effect transistor supplies a drain current, which is controlled by voltages at the respective terminals of the capacity, to the photodiode, in order to prevent the output voltage of the amplifier circuit from being varied due to the influence of a DC photocurrent flowing in the photodiode. The gate of a field effect transistor, which is connected in parallel to a current voltage conversion resistor, has an identical voltage with the gate of the field effect transistor.
摘要翻译：放大器电路放大来自电流电压转换电路的输出电压和偏置电压之间的差。当前的电压转换电路将检测入射光的光电二极管的光电流转换成电压。 gm放大器通过与放大器电路的输出电压和参考电压之间的差相对应的电流对容量进行充电或放电。场效应晶体管将由电容的各个端子处的电压控制的漏极电流提供给光电二极管，以便防止由于直流光电流流入的放大器电路的输出电压而变化光电二极管。与电流电压转换电阻并联连接的场效应晶体管的栅极与场效应晶体管的栅极具有相同的电压。

17. 发明授权

US07061303B2 Photoelectric leak current compensating circuit and optical signal circuit using same 失效
标题翻译：光电漏电补偿电路和光信号电路采用相同方式
公开(公告)号：US07061303B2
公开(公告)日：2006-06-13
申请号：US10733376
申请日：2003-12-12
申请人： Takahiro Inoue , Naruichi Yokogawa , Ryosuke Kawashima
发明人： Takahiro Inoue , Naruichi Yokogawa , Ryosuke Kawashima
IPC分类号： H03K17/60
CPC分类号： G05F3/265
摘要： When a current mirror circuit is composed of transistors that inevitably form a parasitic photodiode between an epitaxial layer and a substrate layer because of structure of an integrated circuit, a photocurrent increases in proportional to an area of the epitaxial layer. Thus, the area of the epitaxial layer is adjusted in accordance with a current ratio of the current mirror, so as to allow the photocurrent to affect equally on both input and output sides of the current mirror circuit, i.e., so as to cancel the photocurrent. With this, in a current mirror circuit provided in an integrated circuit, it is possible to eliminate the influence of the photocurrent, without considerably increasing an element area or taking special measures to shield light.
摘要翻译：当由于集成电路的结构，电流镜电路由不可避免地在外延层和衬底层之间形成寄生光电二极管的晶体管组成时，光电流与外延层的面积成比例地增加。因此，根据电流镜的电流比来调整外延层的面积，以便允许光电流在电流镜电路的输入和输出侧均等地影响，即抵消光电流。由此，在集成电路中提供的电流镜电路中，可以消除光电流的影响，而不会显着增加元件面积或者采取特别的措施来屏蔽光。

18. 发明申请

US20050089337A1 Infrared transmitter circuit and electronic device 失效
标题翻译：红外发射机电路和电子设备
公开(公告)号：US20050089337A1
公开(公告)日：2005-04-28
申请号：US10968884
申请日：2004-10-21
申请人： Hiroaki Itoh , Naruichi Yokogawa , Takeshi Nishino , Ryosuke Kawashima
发明人： Hiroaki Itoh , Naruichi Yokogawa , Takeshi Nishino , Ryosuke Kawashima
IPC分类号： H03K17/78 , H04N5/00 , H04B10/04
CPC分类号： H04B10/1141
摘要： An infrared transmitter circuit causes an output current to flow to a light emission diode via a current mirror circuit constituted of three transistors by using a current supplied from a power source circuit, so that the light emission diode emits light. When a voltage V1 varied by charging a capacitor with a current flowing from the power source circuit exceeds a reference voltage (voltage V2), an output of a comparator resets a D flip-flop, so that an output of the D flip-flop varies to “0”. Thus, an output of a NAND gate to which that output and a transmission signal are inputted causes a transistor (N-channel FET) to turn ON so as to stop operation of the current mirror circuit, and causes a transistor (P-channel FET) to turn OFF so as to cut a connection between the power source circuit and a power source line. Thus, it is possible to reduce power consumption in operation of a protection circuit which stops supplying the output current to the light emission diode.
摘要翻译：红外发射电路通过使用从电源电路提供的电流，通过由三个晶体管构成的电流镜电路使输出电流流到发光二极管，使得发光二极管发光。当通过从电源电路流过的电流对电容器充电而电压V 1超过参考电压（电压V 2）时，比较器的输出复位D触发器，使得D触发器的输出，翻牌变为“0”。因此，输入和发送信号的NAND门的输出使得晶体管（N沟道FET）导通，以停止电流镜电路的工作，并且使晶体管（P沟道FET ）以切断电源电路和电源线之间的连接。因此，可以在停止向发光二极管供给输出电流的保护电路的工作中降低功耗。

19. 发明申请

US20080298816A1 RECEIVER AND ELECTRONIC DEVICE 失效
标题翻译：接收机和电子设备
公开(公告)号：US20080298816A1
公开(公告)日：2008-12-04
申请号：US12127680
申请日：2008-05-27
申请人： Isamu Kawabe , Naruichi Yokogawa
发明人： Isamu Kawabe , Naruichi Yokogawa
IPC分类号： H04B10/06
CPC分类号： H04B10/695 , H03F3/087 , H03K5/1252 , H04B10/1149
摘要： An abnormal pulse detection circuit in a receiver of the present invention includes: an incoming pulse edge detection circuit which detects the moment of rise of an input signal and outputs the result of the detection as an edge detection signal; a muting reference pulse generation circuit which generates a muting reference pulse based on the edge detection signal; a logic circuit which outputs a signal indicating a negative AND of the muting reference pulse and the input signal; a muting signal generation circuit which generates a muting signal from the output signal of the logic circuit; and a switching circuit which outputs the input signal or the muting signal. The receiver of the present invention can therefore reduce discomfort in hearing reproduced sound in case where a noise occurs in an audio signal due to a variation in pulse width.
摘要翻译：本发明的接收机中的异常脉冲检测电路包括：输入脉冲沿检测电路，其检测输入信号的上升沿，并将检测结果作为边缘检测信号输出; 静噪参考脉冲发生电路，其基于边缘检测信号产生静噪参考脉冲; 逻辑电路，其输出指示所述静默基准脉冲和所述输入信号的否定AND的信号; 静噪信号产生电路，从逻辑电路的输出信号产生静噪信号; 以及输出输入信号或静音信号的切换电路。因此，由于脉冲宽度的变化，在音频信号中产生噪声的情况下，本发明的接收机可以减少对再现声音的不适。

20. 发明授权

US07359649B2 Infrared transmitter circuit and electronic device 失效
标题翻译：红外发射机电路和电子设备
公开(公告)号：US07359649B2
公开(公告)日：2008-04-15
申请号：US10968884
申请日：2004-10-21
申请人： Hiroaki Itoh , Naruichi Yokogawa , Takeshi Nishino , Ryosuke Kawashima
发明人： Hiroaki Itoh , Naruichi Yokogawa , Takeshi Nishino , Ryosuke Kawashima
IPC分类号： H04B10/04 , H01S3/00
CPC分类号： H04B10/1141
摘要： An infrared transmitter circuit causes an output current to flow to a light emission diode via a current mirror circuit constituted of three transistors by using a current supplied from a power source circuit, so that the light emission diode emits light. When a voltage V1 varied by charging a capacitor with a current flowing from the power source circuit exceeds a reference voltage (voltage V2), an output of a comparator resets a D flip-flop, so that an output of the D flip-flop varies to “0”. Thus, an output of a NAND gate to which that output and a transmission signal are inputted causes a transistor (N-channel FET) to turn ON so as to stop operation of the current mirror circuit, and causes a transistor (P-channel FET) to turn OFF so as to cut a connection between the power source circuit and a power source line. Thus, it is possible to reduce power consumption in operation of a protection circuit which stops supplying the output current to the light emission diode.
摘要翻译：红外发射电路通过使用从电源电路提供的电流，通过由三个晶体管构成的电流镜电路使输出电流流到发光二极管，使得发光二极管发光。当通过从电源电路流过的电流对电容器充电而电压V 1超过参考电压（电压V 2）时，比较器的输出复位D触发器，使得D触发器的输出，翻牌变为“0”。因此，输入和发送信号的NAND门的输出使得晶体管（N沟道FET）导通，以停止电流镜电路的工作，并且使晶体管（P沟道FET ）以切断电源电路和电源线之间的连接。因此，可以在停止向发光二极管供给输出电流的保护电路的工作中降低功耗。

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