公开(公告)号：US07266308B2

公开(公告)日：2007-09-04

申请号：US11203544

申请日：2005-08-15

Applicant: Tadao Inoue ,  Tadashi Ikeuchi ,  Hiroyuki Rokugawa ,  Masaaki Kawai ,  Norio Ueno ,  Norio Murakami ,  Toru Matsuyama ,  Makoto Miki ,  Toshiyuki Takauji

Inventor： Tadao Inoue ,  Tadashi Ikeuchi ,  Hiroyuki Rokugawa ,  Masaaki Kawai ,  Norio Ueno ,  Norio Murakami ,  Toru Matsuyama ,  Makoto Miki ,  Toshiyuki Takauji

IPC: H04B10/04 ,  H04B10/12 ,  H01S3/13

CPC classification number: H01S5/0683 ,  H01S5/06825

Abstract: Using a switching signal from a coarse/fine switching and operation mode switching circuit, the width of change of a counter control value during power up is increased, and the width of change is reduced once a steady state is reached. In the steady state, the frequency of updating is limited by a control signal from an update permit control circuit. In the steady state, the frequency band of a current source in an LD driving circuit is reduced in width.

Abstract translation: 使用来自粗/精切换和动作模式切换电路的切换信号，上电期间的计数器控制值的变化幅度增大，一旦达到稳定状态，则变化幅度减小。 在稳定状态下，更新频率受来自更新许可控制电路的控制信号的限制。 在稳态中，LD驱动电路中的电流源的频带宽度减小。

公开(公告)号：US5848084A

公开(公告)日：1998-12-08

申请号：US701794

申请日：1996-08-26

Applicant: Hiroyuki Rokugawa

Inventor： Hiroyuki Rokugawa

IPC: G02B6/42 ,  H01S5/00 ,  H01S5/022 ,  H01S5/026 ,  H01S5/042 ,  H01S5/06 ,  H01S5/0625 ,  H04B10/00 ,  H04B10/40 ,  H04B10/50 ,  H04B10/60 ,  H01S3/19

CPC classification number: H01S5/0265 ,  H01S5/0224 ,  H01S5/02276 ,  H01S5/02284 ,  H01S5/0425 ,  H01S5/0427

Abstract: A semiconductor light source for an optical transmitter which includes at least one DC supply unit and at least one AC supply unit, comprises a DC signal source connected to the DC supply unit in order to supply a drive signal thereto; and an AC signal source connected to the AC supply unit in order to supply a control signal thereto; wherein turning on or off an optical output by the semiconductor light source is controlled by using a control signal having the same electric polarity as the drive signal.

Abstract translation: 一种用于光发射机的半导体光源，其包括至少一个DC电源单元和至少一个AC电源单元，包括连接到DC电源单元的DC信号源，以向其提供驱动信号; 以及AC信号源，连接到AC电源单元以向其提供控制信号; 其中通过使用具有与驱动信号相同的电极性的控制信号来控制由半导体光源导通或关断光输出。

公开(公告)号：US08386991B2

公开(公告)日：2013-02-26

申请号：US12975988

申请日：2010-12-22

Applicant: Katsuya Ogata ,  Hiroyuki Rokugawa

Inventor： Katsuya Ogata ,  Hiroyuki Rokugawa

IPC: G06F17/50

CPC classification number: G06F17/5036

Abstract: A design support apparatus includes: a circuit-data generation unit to generate circuit data based on layout information of a semiconductor integrated circuit; and a parameter determination unit to set a first parameter relating to mechanical stress exerted on a transistor including at least one of a plurality of gates in a diffusion region, wherein the circuit-data generation unit obtains a mobility of the transistor based on the first parameter and reflects the mobility in the circuit data.

Abstract translation: 设计支持装置包括：电路数据生成单元，用于基于半导体集成电路的布局信息生成电路数据; 以及参数确定单元，用于设置与包括扩散区域中的多个栅极中的至少一个的晶体管相关的机械应力的第一参数，其中所述电路数据生成单元基于所述第一参数获得所述晶体管的迁移率 并反映电路数据中的移动性。

公开(公告)号：US20060024068A1

公开(公告)日：2006-02-02

申请号：US11203544

申请日：2005-08-15

Applicant: Tadao Inoue ,  Tadashi Ikeuchi ,  Hiroyuki Rokugawa ,  Masaaki Kawai ,  Norio Ueno ,  Norio Murakami ,  Toru Matsuyama ,  Makoto Miki ,  Toshiyuki Takauji

Inventor： Tadao Inoue ,  Tadashi Ikeuchi ,  Hiroyuki Rokugawa ,  Masaaki Kawai ,  Norio Ueno ,  Norio Murakami ,  Toru Matsuyama ,  Makoto Miki ,  Toshiyuki Takauji

IPC: H04B10/04 ,  H04B10/12

CPC classification number: H01S5/0683 ,  H01S5/06825

Abstract: Using a switching signal from a coarse/fine switching and operation mode switching circuit, the width of change of a counter control value during power up is increased, and the width of change is reduced once a steady state is reached. In the steady state, the frequency of updating is limited by a control signal from an update permit control circuit. In the steady state, the frequency band of a current source in an LD driving circuit is reduced in width.

Abstract translation: 使用来自粗/精切换和动作模式切换电路的切换信号，上电期间的计数器控制值的变化幅度增大，一旦达到稳定状态，则变化幅度减小。 在稳定状态下，更新频率受来自更新许可控制电路的控制信号的限制。 在稳态中，LD驱动电路中的电流源的频带宽度减小。

公开(公告)号：US5715075A

公开(公告)日：1998-02-03

申请号：US293598

申请日：1994-08-22

Applicant: Kazuhiro Tanaka ,  Kiyohide Wakao ,  Hiroyuki Nobuhara ,  Nobuhiro Fujimoto ,  Hiroyuki Rokugawa ,  Satoshi Kuroyanagi

Inventor： Kazuhiro Tanaka ,  Kiyohide Wakao ,  Hiroyuki Nobuhara ,  Nobuhiro Fujimoto ,  Hiroyuki Rokugawa ,  Satoshi Kuroyanagi

IPC: H04B10/50 ,  H04B10/572 ,  H04J14/02 ,  H04Q3/52 ,  H04Q11/00 ,  H04Q11/02

CPC classification number: H04Q11/0005 ,  H04B10/506 ,  H04B10/572 ,  H04Q2011/0009 ,  H04Q2011/0011 ,  H04Q2011/0013 ,  H04Q2011/0018 ,  H04Q2011/0039 ,  H04Q2011/0041 ,  H04Q2011/0052 ,  H04Q2011/0058

Abstract: An optical processing device for converting a wavelength of an optical signal comprises an optical processing unit supplied with an input optical beam carrying thereon one or more optical signals with respective wavelengths that are different from each other, the optical processing means being further supplied with a control optical beam having a stabilized reference wavelength and selecting the optical signal that has a first wavelength and outputting the same with a second wavelength that is specified by the reference wavelength; and a control unit for controlling the optical processing unit by specifying the first wavelength of the optical beam to be selected.

Abstract translation: 用于转换光信号的波长的光处理装置包括：光学处理单元，其被提供有输入光束，其上承载有一个或多个具有彼此不同的波长的光信号，光处理装置还被提供控制 光束具有稳定的参考波长并选择具有第一波长的光信号并以由参考波长指定的第二波长输出; 以及控制单元，用于通过指定要选择的光束的第一波长来控制光学处理单元。

公开(公告)号：US07068747B2

公开(公告)日：2006-06-27

申请号：US09952191

申请日：2001-09-14

Applicant: Hiroyuki Rokugawa ,  Tadashi Ikeuchi ,  Daisuke Yamazaki ,  Masaaki Kawai

Inventor： Hiroyuki Rokugawa ,  Tadashi Ikeuchi ,  Daisuke Yamazaki ,  Masaaki Kawai

IPC: H04L7/02

CPC classification number: H03L7/085 ,  H03L7/091 ,  H04L7/033

Abstract: In a data decision circuit: a clock generation unit generates a clock signal based on a phase difference signal so that the clock signal has an optimum phase with respect to a phase of an input data signal; a data determination unit determines data values carried by the input data signal, by using the clock signal; a phase-difference detection unit detects a rising-side phase difference and a falling-side phase difference, where the rising-side phase difference is a phase difference between a rising of the input data signal and a next transition in the clock signal, and the falling-side phase difference is a phase difference between the transition and a next falling of the input data signal; and a phase-difference-signal generation unit generates the phase difference signal so as to represent a difference between the rising-side phase difference and the falling-side phase difference.

公开(公告)号：US20050104661A1

公开(公告)日：2005-05-19

申请号：US10913538

申请日：2004-08-09

Applicant: Hiroyuki Rokugawa ,  Takuji Yamamoto

Inventor： Hiroyuki Rokugawa ,  Takuji Yamamoto

IPC: H03F3/45 ,  H03F1/22 ,  H03F1/30

CPC classification number: H03F3/45188 ,  H03F2203/45352 ,  H03F2203/45368 ,  H03F2203/45462 ,  H03F2203/45554

Abstract: A differential amplifier suitably adapted to an ultra-high-speed signal transmitting apparatus. The differential amplifier includes a first inductor located between a differential transistor and a gate grounded transistor, an optional second inductor located between a load resistor and a power supply, and an optional third inductor located between a source follower transistor and an output terminal.

Abstract translation: 适合于超高速信号发送装置的差分放大器。 差分放大器包括位于差分晶体管和栅极接地晶体管之间的第一电感器，位于负载电阻器和电源之间的可选的第二电感器，以及位于源极跟随器晶体管和输出端子之间的可选的第三电感器。

公开(公告)号：US5796792A

公开(公告)日：1998-08-18

申请号：US581158

申请日：1995-12-29

Applicant: Hiroyuki Rokugawa

Inventor： Hiroyuki Rokugawa

IPC: H03K5/00 ,  H04L7/00 ,  H04L7/027 ,  H04L7/033

CPC classification number: H04L7/0338

Abstract: A device for identifying input data by using a first clock signal includes a first identifying unit which identifies the input data by using the first clock signal to generate first identified data and generates a first phase-relation determination result by determining whether a phase relation between the input data and the first clock signal is appropriate, a delay unit for delaying the input data by a predetermined phase amount to generate delayed input data, a second identifying unit which identifies the delayed input data by using the first clock signal to generate second identified data and generates a second phase-relation determination result by determining whether a phase relation between the delayed input data and the first clock signal is appropriate, and a selection unit which selects one of the first identified data and the second identified data based on at least one of the first phase-relation determination result and the second phase-relation determination result.

公开(公告)号：US06975813B1

公开(公告)日：2005-12-13

申请号：US09505783

申请日：2000-02-17

Applicant: Tadao Inoue ,  Tadashi Ikeuchi ,  Hiroyuki Rokugawa ,  Masaaki Kawai ,  Norio Ueno ,  Norio Murakami ,  Toru Matsuyama ,  Makoto Miki ,  Toshiyuki Takauji

Inventor： Tadao Inoue ,  Tadashi Ikeuchi ,  Hiroyuki Rokugawa ,  Masaaki Kawai ,  Norio Ueno ,  Norio Murakami ,  Toru Matsuyama ,  Makoto Miki ,  Toshiyuki Takauji

IPC: H01L33/00 ,  H01S5/00 ,  H01S5/068 ,  H01S5/0683 ,  H04B10/04 ,  H01S3/00 ,  H01S3/13

CPC classification number: H01S5/0683 ,  H01S5/06825

Abstract: Using a switching signal from a coarse/fine switching and operation mode switching circuit, the width of change of a counter control value during power up is increased, and the width of change is reduced once a steady state is reached. In the steady state, the frequency of updating is limited by a control signal from an update permit control circuit. In the steady state, the frequency band of a current source in an LD driving circuit is reduced in width.

Abstract translation: 使用来自粗/精切换和动作模式切换电路的切换信号，上电期间的计数器控制值的变化幅度增大，一旦达到稳定状态，则变化幅度减小。 在稳定状态下，更新频率受来自更新许可控制电路的控制信号的限制。 在稳态中，LD驱动电路中的电流源的频带宽度减小。

公开(公告)号：US06242870B1

公开(公告)日：2001-06-05

申请号：US09041957

申请日：1998-03-13

Applicant: Hisako Koyanagi ,  Hiroyuki Rokugawa

Inventor： Hisako Koyanagi ,  Hiroyuki Rokugawa

IPC: G05F100

CPC classification number: H05B33/0812 ,  H05B33/0854 ,  Y02B20/345 ,  Y10S362/80

Abstract: A light emitting device driving circuit capable of, at all times, securing a constant optical output by a simple configuration even in a case of driving a light emitting device having characteristics changing according to temperature fluctuations, provided with a driving transistor for feeding a bias current and a pulse current to a light emitting device having a grounded-cathode, an adjusting resistor for adjusting the pulse current and bias current fed to the light emitting device, and a resistive dividing circuit comprising series-connected dividing resistors for individually setting the pulse current and bias current, the series-connected dividing resistors being constituted by a temperature dependent resistive unit.

Abstract translation: 一种发光器件驱动电路，即使在驱动具有根据温度波动而变化的特性的发光器件的情况下，也能够通过简单的结构来确保恒定的光输出，该发光器件具有用于馈送偏置电流的驱动晶体管 以及具有接地阴极的发光器件的脉冲电流，用于调节脉冲电流和馈送到发光器件的偏置电流的调节电阻器，以及包括串联连接的分压电阻器的电阻分压电路，用于分别设置脉冲电流 和偏置电流，串联连接的分压电阻由温度依赖电阻单元构成。