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1.发明授权Low-offset input circuit including amplifier circuit to correct circuit characteristics to cancel offset of the input circuit 失效低失调输入电路包括放大器电路，用于校正电路特性以消除输入电路的偏移公开(公告)号：US07795944B2
公开(公告)日：2010-09-14
申请号：US12183080
申请日：2008-07-31
IPC分类号： H03L5/00
CPC分类号： H03F3/45475 , H03F3/45183 , H03F3/45744 , H03F3/45968 , H03F2203/45212 , H03F2203/45702
摘要： In a signal transmission system where an influence of the circuit characteristic variation of an input circuit on signal receiving operation cannot be ignored, there is provided a method of realizing a low-offset input circuit which is capable of conducting high-speed operation and always continuing signal receiving operation without increasing the number of terminals of a semiconductor integrated circuit and without the necessity of providing additional signal observing means and variation adjustment amount calculating means to the external of the semiconductor integrated circuit. In a signal receiver circuit having an input circuit, an automatic zero amplifier, an analog/digital converter circuit, an encoder circuit, and a signal holding circuit, an output error signal of the input circuit is amplified by the automatic zero amplifier, and the signal is digitalized or the digitalized signal is encoded as the occasion demands, and held by the holding circuit, and the circuit characteristic variation of the input circuit is adjusted by the held signal.
摘要翻译： 在输入电路对信号接收操作的电路特性变化的影响不能忽略的信号传输系统中，提供了一种实现低偏移输入电路的方法，该低失调输入电路能够进行高速操作并且总是继续 信号接收操作而不增加半导体集成电路的端子数量，而不需要向半导体集成电路的外部提供额外的信号观测装置和变化调整量计算装置。 在具有输入电路，自动零放大器，模拟/数字转换器电路，编码器电路和信号保持电路的信号接收器电路中，输入电路的输出误差信号由自动零放大器放大， 信号被数字化或数字化信号根据场合需要编码并由保持电路保持，并且通过保持信号调整输入电路的电路特性变化。
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公开(公告)号：US08358708B2
公开(公告)日：2013-01-22
申请号：US12453980
申请日：2009-05-28
IPC分类号： H04L7/00
CPC分类号： H03F3/45475 , H03F3/24 , H03F3/3028 , H03F3/45183 , H03F3/45605 , H03F3/45977 , H03F2200/411 , H03F2200/537 , H03F2203/45212 , H03F2203/45674 , H03F2203/45702 , H03F2203/45726
摘要： A low offset input circuit and a signal transmission system which can accommodate a high-speed interface and achieve reduction of an offset voltage are provided. An offset voltage compensating circuit block 103 having an input circuit block 108 including an input circuit 104 and an adder-subtractor circuit block 105, switches 108, 109, a detecting circuit block 106, and an adjusting and holding circuit block 107 is provided. To compensate for an offset voltage of the input circuit block 102, an offset voltage of the input circuit block 102 is detected at the detecting circuit block 106 by turning on the switches 108, 109, and the detected offset voltage is held in the adjusting and holding circuit block 107, and negative feedback of the held offset voltage to the adder-subtractor circuit block 105 is performed. Thereby, signals Vop, Von having compensated offset voltages are outputted from the input circuit block 102.
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公开(公告)号：US08445832B2
公开(公告)日：2013-05-21
申请号：US13201212
申请日：2009-03-05
CPC分类号： H03F3/087 , H03F1/223 , H03F1/34 , H03F3/082 , H03F3/3022 , H03F3/505 , H03F2200/453 , H04B10/6933
摘要： An optical communication device which can be operated at high speed is provided. For example, the optical communication device includes: a pre-amplifier circuit PREAMP1 amplifying a current signal Iin from a photodiode PD, and converting an amplified signal into a voltage signal; and an operating-point controller circuit VTCTL1 controlling an operation of the PREAMP1. The PREAMP1 includes a negative feedback path formed by a feedback resistance Rf1, and includes: a level-shift circuit LS1 level-shifting in accordance with an operating-point control signal Vcon; and an amplifier circuit AMP1 connected to a subsequent stage of the LS1 and performing an amplifying operation with a high gain. The VTCTL1 includes a replica circuit configured by the same circuit and circuit parameter as those of the AMP1 and electrically connected between the input and the output, and generates the Vcon so that an output DC level of this replica circuit is matched with an input DC level of the AMP1.
摘要翻译： 提供可以高速运转的光通信装置。 例如，光通信装置包括：前置放大器电路PREAMP1，放大来自光电二极管PD的电流信号Iin，将放大后的信号变换为电压信号; 以及控制PREAMP1的操作的操作点控制器电路VTCTL1。 PREAMP1包括由反馈电阻Rf1形成的负反馈路径，并且包括：根据工作点控制信号Vcon的电平移位电路LS1电平移位; 以及连接到LS1的后级并且以高增益进行放大操作的放大器电路AMP1。 VTCTL1包括由与AMP1相同的电路和电路参数配置的电路复用电路，并且电连接在输入和输出端之间，并产生Vcon，使得该复制电路的输出直流电平与输入直流电平相匹配 的AMP1。
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公开(公告)号：US07714644B2
公开(公告)日：2010-05-11
申请号：US12166666
申请日：2008-07-02
IPC分类号： H03F1/02
CPC分类号： H03F3/45475 , H03F1/26 , H03F1/34 , H03F3/45085 , H03F3/45183 , H03F3/45968 , H03F2200/372 , H03F2200/375 , H03F2203/45534
摘要： An amplifier circuit block and a compensation circuit block are provided. The amplifier circuit block includes an analog adder for subtracting an output signal of the compensation circuit block from an input signal and an amplifier circuit operating in a wide band. The compensation circuit block includes an amplifier circuit with a low offset voltage and a low noise in a low frequency region, an analog adder block for subtracting an output signal of the amplifier circuit from an output signal of the amplifier circuit and generating a differential signal thereof, and a feedback circuit block for negatively feeding back the differential signal to the analog adder. The amplifier circuit block can reduce the offset voltage and the low-band noise by the negative feedback of the differential signal, and at the same time, the operation band of the entire amplifier circuit can be decided by the characteristic of the amplifier circuit.
摘要翻译： 提供放大器电路块和补偿电路块。 放大器电路块包括用于从输入信号中减去补偿电路块的输出信号的模拟加法器和在宽带中工作的放大器电路。 补偿电路块包括在低频区域具有低失调电压和低噪声的放大器电路，用于从放大器电路的输出信号中减去放大器电路的输出信号并产生其差分信号的模拟加法器块 以及用于将差分信号负反馈给模拟加法器的反馈电路块。 放大器电路块可以通过差分信号的负反馈来减小偏移电压和低带噪声，同时整个放大器电路的工作频带可以由放大器电路的特性决定。
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公开(公告)号：US20110249980A1
公开(公告)日：2011-10-13
申请号：US13085470
申请日：2011-04-12
申请人： Takashi Takemoto , Hiroki Yamashita , Shinji Tsuji
发明人： Takashi Takemoto , Hiroki Yamashita , Shinji Tsuji
IPC分类号： H04B10/04
CPC分类号： H04B10/503 , H01L2224/16225 , H01L2924/1305 , H01L2924/13091 , H01L2924/15192 , H01L2924/15311 , H01S5/02248 , H01L2924/00
摘要： An optical communication module and an optical communication device including the same are provided. For example, a first semiconductor chip on which a laser diode is formed and a second semiconductor chip on which a laser diode driver circuit, etc. for subjecting the laser diode to drive by current are formed are mounted on a package printed circuit board to be close to each other. Temperature detecting means is further formed on the second semiconductor chip (laser diode driver circuit, etc.). The temperature detecting means detects a temperature variation ΔT of the first semiconductor chip (laser diode) transmitted via a wiring in the package printed circuit board and controls the magnitude of the driving current of the laser diode driver circuit based on a detection result.
摘要翻译： 提供了一种光通信模块和包括该光通信模块的光通信设备。 例如，形成激光二极管的第一半导体芯片和形成激光二极管通过电流驱动的激光二极管驱动电路等的第二半导体芯片安装在封装印刷电路板上 彼此接近 温度检测装置还形成在第二半导体芯片（激光二极管驱动电路等）上。 温度检测装置检测通过封装印刷电路板中的布线传输的第一半导体芯片（激光二极管）的温度变化＆Dgr; T，并根据检测结果控制激光二极管驱动电路的驱动电流的大小。
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公开(公告)号：US08503888B2
公开(公告)日：2013-08-06
申请号：US13085470
申请日：2011-04-12
申请人： Takashi Takemoto , Hiroki Yamashita , Shinji Tsuji
发明人： Takashi Takemoto , Hiroki Yamashita , Shinji Tsuji
CPC分类号： H04B10/503 , H01L2224/16225 , H01L2924/1305 , H01L2924/13091 , H01L2924/15192 , H01L2924/15311 , H01S5/02248 , H01L2924/00
摘要： An optical communication module and an optical communication device including the same are provided. For example, a first semiconductor chip on which a laser diode is formed and a second semiconductor chip on which a laser diode driver circuit, etc. for subjecting the laser diode to drive by current are formed are mounted on a package printed circuit board to be close to each other. Temperature detecting means is further formed on the second semiconductor chip (laser diode driver circuit, etc.). The temperature detecting means detects a temperature variation ΔT of the first semiconductor chip (laser diode) transmitted via a wiring in the package printed circuit board and controls the magnitude of the driving current of the laser diode driver circuit based on a detection result.
摘要翻译： 提供了一种光通信模块和包括该光通信模块的光通信设备。 例如，形成激光二极管的第一半导体芯片和形成激光二极管通过电流驱动的激光二极管驱动电路等的第二半导体芯片安装在封装印刷电路板上 彼此接近 温度检测装置还形成在第二半导体芯片（激光二极管驱动电路等）上。 温度检测装置检测通过封装印刷电路板中的布线传输的第一半导体芯片（激光二极管）的温度变化量DeltaT，并根据检测结果控制激光二极管驱动电路的驱动电流的大小。
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公开(公告)号：US20090009240A1
公开(公告)日：2009-01-08
申请号：US12166666
申请日：2008-07-02
IPC分类号： H03F1/36
CPC分类号： H03F3/45475 , H03F1/26 , H03F1/34 , H03F3/45085 , H03F3/45183 , H03F3/45968 , H03F2200/372 , H03F2200/375 , H03F2203/45534
摘要： An amplifier circuit block and a compensation circuit block are provided. The amplifier circuit block includes an analog adder for subtracting an output signal of the compensation circuit block from an input signal and an amplifier circuit operating in a wide band. The compensation circuit block includes an amplifier circuit with a low offset voltage and a low noise in a low frequency region, an analog adder block for subtracting an output signal of the amplifier circuit from an output signal of the amplifier circuit and generating a differential signal thereof, and a feedback circuit block for negatively feeding back the differential signal to the analog adder. The amplifier circuit block can reduce the offset voltage and the low-band noise by the negative feedback of the differential signal, and at the same time, the operation band of the entire amplifier circuit can be decided by the characteristic of the amplifier circuit.
摘要翻译： 提供放大器电路块和补偿电路块。 放大器电路块包括用于从输入信号中减去补偿电路块的输出信号的模拟加法器和在宽带中工作的放大器电路。 补偿电路块包括在低频区域具有低失调电压和低噪声的放大器电路，用于从放大器电路的输出信号中减去放大器电路的输出信号并产生其差分信号的模拟加法器块 以及用于将差分信号负反馈给模拟加法器的反馈电路块。 放大器电路块可以通过差分信号的负反馈来减小偏移电压和低带噪声，同时整个放大器电路的工作频带可以由放大器电路的特性决定。
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8.发明授权Transimpedance amplifier, semiconductor device, and optical module to include an adding circuit for adding first and second current variation 有权互阻放大器，半导体器件和光学模块，包括用于添加第一和第二电流变化的加法电路公开(公告)号：US08993952B2
公开(公告)日：2015-03-31
申请号：US13546382
申请日：2012-07-11
申请人： Takashi Takemoto , Hiroki Yamashita , Shinji Tsuji
发明人： Takashi Takemoto , Hiroki Yamashita , Shinji Tsuji
CPC分类号： H03F3/085 , H03F1/0222 , H03F1/0233 , H03F1/083 , H03F3/087 , H03F2200/372 , H03F2200/504 , H03F2200/78
摘要： An optical module including a transimpedance amplifier capable of realizing a high-speed and high-quality receiving operation is provided. A transimpedance amplifier includes: a pre-amplifier using a single-end current signal as an input and converting the single-end current signal to a single-end voltage signal; an automatic decision threshold control detecting a center electric potential of the single-end voltage signal serving as an output of the pre-amplifier; a post-amplifier differentiating and amplifying the single-end voltage signal of the output of the pre-amplifier; and a power circuit supplying power to the pre-amplifier. Particularly, in accordance with an input voltage signal or an output voltage signal of the pre-amplifier, the power circuit outputs a varied current that flows to a supply terminal of the pre-amplifier and a varied current having a phase opposite to that of the varied current. Thus, the power supply current change is cancelled out.
摘要翻译： 提供一种包括能够实现高速和高质量接收操作的跨阻放大器的光学模块。 跨阻放大器包括：使用单端电流信号作为输入并将单端电流信号转换为单端电压信号的前置放大器; 检测用作前置放大器的输出的单端电压信号的中心电位的自动判定阈值控制; 后置放大器对前置放大器输出的单端电压信号进行差分放大; 以及向前置放大器供电的电源电路。 特别地，根据前置放大器的输入电压信号或输出电压信号，电源电路输出流向前置放大器的电源端子的变化的电流和与 变化的电流。 因此，电源电流变化被消除。
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公开(公告)号：US20110316632A1
公开(公告)日：2011-12-29
申请号：US13201212
申请日：2009-03-05
CPC分类号： H03F3/087 , H03F1/223 , H03F1/34 , H03F3/082 , H03F3/3022 , H03F3/505 , H03F2200/453 , H04B10/6933
摘要： An optical communication device which can be operated at high speed is provided. For example, the optical communication device includes: a pre-amplifier circuit PREAMP1 amplifying a current signal Iin from a photodiode PD, and converting an amplified signal into a voltage signal; and an operating-point controller circuit VTCTL1 controlling an operation of the PREAMP1. The PREAMP1 includes a negative feedback path formed by a feedback resistance Rf1, and includes: a level-shift circuit LS1 level-shifting in accordance with an operating-point control signal Vcon; and an amplifier circuit AMP1 connected to a subsequent stage of the LS1 and performing an amplifying operation with a high gain. The VTCTL1 includes a replica circuit configured by the same circuit and circuit parameter as those of the AMP1 and electrically connected between the input and the output, and generates the Vcon so that an output DC level of this replica circuit is matched with an input DC level of the AMP1.
摘要翻译： 提供可以高速运转的光通信装置。 例如，光通信装置包括：前置放大器电路PREAMP1，放大来自光电二极管PD的电流信号Iin，将放大后的信号变换为电压信号; 以及控制PREAMP1的操作的操作点控制器电路VTCTL1。 PREAMP1包括由反馈电阻Rf1形成的负反馈路径，并且包括：根据工作点控制信号Vcon的电平移位电路LS1电平移位; 以及连接到LS1的后级并且以高增益进行放大操作的放大器电路AMP1。 VTCTL1包括由与AMP1相同的电路和电路参数配置的电路复用电路，并且电连接在输入和输出端之间，并产生Vcon，使得该复制电路的输出直流电平与输入直流电平相匹配 的AMP1。
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公开(公告)号：US20110017410A1
公开(公告)日：2011-01-27
申请号：US12715080
申请日：2010-03-01
IPC分类号： E06B9/06
CPC分类号： B23Q11/0825 , B23Q2011/0808
摘要： A novel telescopic cover of the present invention has a plurality of protection covers having top plates and vertically-suspended plates vertically suspended from the top plates, and being arranged so as to cover a guiding portion of a machining tool or the like in a freely stretchable manner between every adjacent pair of the protection covers, while being linked with each other by a linking mechanism which is configured by a plurality of linking elements linked so as to be rotatable around connecting shafts, wherein the telescopic cover has a plurality of guide rails provided to the plurality of protection covers, each having a guide groove which has one and the other guiding surfaces opposed with each other, in the direction normal to the direction of stretching and shrinkage of the entire portion of the protection covers; and a plurality of rolling elements arranged in guide groove, so as to be freely rotatable around each connecting shaft which extends in the depth-wise direction of the guide groove.
摘要翻译： 本发明的新型伸缩罩具有多个保护盖，其具有从顶板垂直悬挂的顶板和垂直悬挂板，并且被布置成以可自由拉伸的方式覆盖加工工具等的引导部分 在每个相邻的一对保护盖之间，通过连接机构彼此连接，该连接机构由连接成可连接的多个连接元件构成，以便能够围绕连接轴旋转，其中伸缩盖具有多个导轨， 多个保护盖，每个保护盖具有一个导向槽，该引导槽具有一个和另一个引导表面在与保护盖的整个部分的拉伸和收缩方向垂直的方向上彼此相对; 以及布置在引导槽中的多个滚动元件，以便能够沿着在引导槽的深度方向上延伸的每个连接轴自由旋转。
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