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1. 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。

2. 发明授权

US07054389B2 Carrier detection circuit and infrared ray remote control receiver 有权
公开(公告)号：US07054389B2
公开(公告)日：2006-05-30
申请号：US09919955
申请日：2001-08-02
申请人： Naruichi Yokogawa , Takeshi Nishino , Kazuo Noda
发明人： Naruichi Yokogawa , Takeshi Nishino , Kazuo Noda
IPC分类号： H03D1/00 , H04B7/00
CPC分类号： H04B10/6933
摘要： A carrier detection circuit of the present invention detects groups of pulses having a carrier frequency by using a detector, and integrates, by an integrator, a time in which the groups are detected, so as to generate a carrier detection level. Therefore, a transistor is only requested to have responsibility with respect to a frequency of a base band component, but not to the carrier frequency. This ensures a margin with respect to a response of the transistor, while allowing a feeble current to be used as charging and discharging currents for the capacitor. In this way, even if a capacitor in use has such a small capacity that the capacitor can be incorporated in an integrated circuit, the detection of the carrier is performed accurately. Meanwhile, by further providing a level change-over circuit, which increases an output of the detector relative to a reference integral value during a time in which the carrier is detected, it is possible to reduce malfunction caused by a light noise having swelling, in case an infrared ray remote control is used.

3. 发明申请

US20060008280A1 Receiving circuit and electronic apparatus for optical communication 失效
标题翻译：光通信接收电路和电子设备
公开(公告)号：US20060008280A1
公开(公告)日：2006-01-12
申请号：US11175340
申请日：2005-07-07
申请人： Naruichi Yokogawa , Takeshi Nishino
发明人： Naruichi Yokogawa , Takeshi Nishino
IPC分类号： H04B10/06
CPC分类号： H04B10/114
摘要： In an optical communication-use receiving circuit of the present invention, the pulse width of the received pulse which is a binary signal corresponding to the signal optical pulse is specified by using an integration circuit and a trigger generating circuit. If the pulse width of the received pulse is not shorter than a predetermined value, a signal having a fixed pulse width is outputted as an output signal from a one-shot pulse generating circuit, so that a pulse having a constant pulse width corresponding to the specified communication speed is outputted. Accordingly, if the pulse width deriving from the signal optical pulse is larger than a certain value, the communication is deemed as a low-speed communication, and a pulse having a constant pulse width corresponding to the communication speed is outputted. As a result, it is possible to realize a small-size receiving circuit and a small-size electronic device which require no external switching-over terminal.
摘要翻译：在本发明的光通信用接收电路中，通过使用积分电路和触发发生电路来规定作为与信号光脉冲对应的二进制信号的接收脉冲的脉冲宽度。如果接收脉冲的脉冲宽度不小于预定值，则从单触发脉冲发生电路输出具有固定脉冲宽度的信号作为输出信号，使得脉冲宽度对应于输出指定的通信速度。因此，如果从信号光脉冲导出的脉冲宽度大于一定值，则通信被认为是低速通信，并且输出具有与通信速度对应的恒定脉冲宽度的脉冲。结果，可以实现不需要外部切换端子的小尺寸接收电路和小型电子设备。

4. 发明授权

US06677732B1 Charge and/or discharge circuit, and carrier detector circuit using same 有权
标题翻译：充电和/或放电电路，以及使用其的载波检测器电路
公开(公告)号：US06677732B1
公开(公告)日：2004-01-13
申请号：US10189396
申请日：2002-07-08
申请人： Takahiro Inoue , Naruichi Yokogawa , Takeshi Nishino
发明人： Takahiro Inoue , Naruichi Yokogawa , Takeshi Nishino
IPC分类号： H01M1046
CPC分类号： H04B10/69 , H04L27/06
摘要： A charge/discharge circuit creates a carrier detection level based on a received signal in a carrier detector circuit for detecting the presence or absence of a carrier in such applications as a receiver for an IR remote controller. The charge/discharge circuit operates to amplify a current, that is produced in n-type transistors QN1, QN2, QN3 and a reference current source, in a p-type transistor QP1. The amplified current is mirrored by a current mirror circuit to be supplied as an emitter current of a p-type transistor QP2. The charge/discharge circuit charges a capacitor with a small current, i.e., a base current of the p-type transistor QP2. The charge/discharge circuit includes a bias voltage source which produces such a bias voltage that the emitter-collector voltage of the p-type transistor QP1 becomes substantially equal to the emitter-collector voltage of the p-type transistor QP2. As a result, it is possible to limit an error of a charge current charged into the capacitor, which is caused by the emitter-collector voltage dependent change of the collector current and thus the base current, known as the Early effect.
摘要翻译：充电/放电电路基于载波检测器电路中的接收信号创建载波检测电平，用于在诸如用于IR遥控器的接收机的应用中检测载波的存在或不存在。充电/放电电路用于在p型晶体管QP1中放大在n型晶体管QN1，QN2，QN3和参考电流源中产生的电流。放大的电流由电流镜电路镜像，以作为p型晶体管QP2的发射极电流提供。充电/放电电路以小电流（即p型晶体管QP2的基极电流）对电容器充电。充电/放电电路包括偏置电压源，其产生这样的偏置电压，使得p型晶体管QP1的发射极 - 集电极电压变得基本上等于p型晶体管QP2的发射极 - 集电极电压。结果，可以限制由集电极电流的发射极 - 集电极电压依赖的变化引起的充电到电容器中的充电电流的误差，从而限制被称为早期效应的基极电流。

5. 发明授权

US07460792B2 Receiving circuit and electronic apparatus for optical communication 失效
标题翻译：光通信接收电路和电子设备
公开(公告)号：US07460792B2
公开(公告)日：2008-12-02
申请号：US11175340
申请日：2005-07-07
申请人： Naruichi Yokogawa , Takeshi Nishino
发明人： Naruichi Yokogawa , Takeshi Nishino
IPC分类号： H04B10/06
CPC分类号： H04B10/114
摘要： In an optical communication-use receiving circuit of the present invention, the pulse width of the received pulse which is a binary signal corresponding to the signal optical pulse is specified by using an integration circuit and a trigger generating circuit. If the pulse width of the received pulse is not shorter than a predetermined value, a signal having a fixed pulse width is outputted as an output signal from a one-shot pulse generating circuit, so that a pulse having a constant pulse width corresponding to the specified communication speed is outputted. Accordingly, if the pulse width deriving from the signal optical pulse is larger than a certain value, the communication is deemed as a low-speed communication, and a pulse having a constant pulse width corresponding to the communication speed is outputted. As a result, it is possible to realize a small-size receiving circuit and a small-size electronic device which require no external switching-over terminal.
摘要翻译：在本发明的光通信用接收电路中，通过使用积分电路和触发发生电路来规定作为与信号光脉冲对应的二进制信号的接收脉冲的脉冲宽度。如果接收脉冲的脉冲宽度不小于预定值，则从单触发脉冲发生电路输出具有固定脉冲宽度的信号作为输出信号，使得脉冲宽度对应于输出指定的通信速度。因此，如果从信号光脉冲导出的脉冲宽度大于一定值，则通信被认为是低速通信，并且输出具有与通信速度对应的恒定脉冲宽度的脉冲。结果，可以实现不需要外部切换端子的小尺寸接收电路和小型电子设备。

6. 发明授权

US06693466B2 Comparator circuit and infrared signal receiving apparatus 有权
标题翻译：比较电路和红外信号接收装置
公开(公告)号：US06693466B2
公开(公告)日：2004-02-17
申请号：US10293563
申请日：2002-11-14
申请人： Takahiro Inoue , Naruichi Yokogawa , Takeshi Nishino
发明人： Takahiro Inoue , Naruichi Yokogawa , Takeshi Nishino
IPC分类号： H03K5153
CPC分类号： H03K5/2418 , H03K3/02337 , H03K3/2897
摘要： The present invention has an object to control easily the pulse width of an output by operating a limiting circuit appropriately even if the power voltage is low. A limiting circuit is provided on the input side of a hysteresis comparator circuit to prevent saturation. A limit voltage Vlimit is set by a bias circuit so as to change in accordance with the operation of the hysteresis comparator circuit. When an input voltage Vsig exceeds a hysteresis threshold voltage Vth, the limit voltage Vlimit is dropped in response to a drop of the hysteresis threshold voltage Vth. Thus, the width of the pulse width can be controlled while maintaining the condition that the limit voltage Vlimit is higher than the hysteresis threshold voltage Vth.
摘要翻译：本发明的目的是即使电源电压低，也可以适当地操作限制电路来容易地控制输出的脉冲宽度。在滞环比较器电路的输入侧提供限制电路以防止饱和。极限电压Vlimit由偏置电路设置，以便根据滞后比较器电路的操作而改变。当输入电压Vsig超过滞后阈值电压Vth时，极限电压Vlimit响应于滞后阈值电压Vth的下降而下降。因此，可以控制脉冲宽度的宽度，同时保持极限电压Vlimit高于滞后阈值电压Vth的条件。

7. 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。

8. 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。

9. 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。

10. 发明申请

US20050087688A1 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：US20050087688A1
公开(公告)日：2005-04-28
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： H03F1/26 , G01J1/44 , G01J5/00 , H03F3/08 , H03K5/1252 , H04B10/11 , H04B10/114 , H04B10/2507 , H04B10/40 , H04B10/50 , H04B10/524 , H04B10/58 , H04B10/60 , H04B10/69 , H04L25/02
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。

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