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1. 发明专利

JP2013143759A Optical transmission device and optical transmission method 有权
标题翻译：光传输设备和光传输方法
公开(公告)号：JP2013143759A
公开(公告)日：2013-07-22
申请号：JP2012004502
申请日：2012-01-12
申请人： Fujitsu Ltd , 富士通株式会社
发明人： IDE SATOSHI , IKEUCHI AKIRA
IPC分类号： H04B10/40 , H04B10/50 , H04B10/556 , H04B10/60
CPC分类号： H04B10/40
摘要： PROBLEM TO BE SOLVED: To allow an optical transmission operation to continue even at a high temperature exceeding the specification temperature of a light emitting element.SOLUTION: An optical transmission device 100 has: an optical transmitter 101 which includes a light emitting element 102 and a light emitting element drive circuit 104; a temperature sensor 141 which detects the temperature of the optical transmitter 101; and a control part 150 which, when the temperature detected by the temperature sensor 141 is the specification temperature of the light emitting element 102 or higher, switches an operational mode of the optical transmitter 101 from a normal mode to a low power mode and reduces thermal effect on the light emitting element 102 to continue the operation of the light emitting element 102. The control part 150 executes the following controls in combination: lowering transmission speed of a transmission interface circuit 130 and a light emitting element drive circuit 104 at the time of low power mode; stopping a band expansion operation of the light emitting element drive circuit 104; lowering power of the light emitting element 102; and reducing the number of transmission channels of the transmission interface circuit 130 and the light emitting element drive circuit 104.
摘要翻译：要解决的问题：即使在超过发光元件的规格温度的高温下也允许光传输操作继续。解决方案：光传输装置100具有：光发射机101，其包括发光元件102和发光元件驱动电路104; 检测光发射机101的温度的温度传感器141; 以及控制部150，当由温度传感器141检测到的温度是发光元件102的规格温度以上时，将光发送器101的工作模式从正常模式切换为低功率模式，并降低热影响发光元件102以继续发光元件102的操作。控制部150组合执行以下控制：降低传输接口电路130和发光元件驱动电路104的传输速度低功耗模式; 停止发光元件驱动电路104的频带扩展动作; 降低发光元件102的功率; 并且减少传输接口电路130和发光元件驱动电路104的传输通道的数量。

2. 发明专利

JP2010130588A Optical receiver, optical receiving circuit, and optical receiving method 有权
标题翻译：光接收机，光接收电路和光接收方式
公开(公告)号：JP2010130588A
公开(公告)日：2010-06-10
申请号：JP2008305656
申请日：2008-11-28
申请人： Fujitsu Ltd , 富士通株式会社
发明人： SUGAWARA MARIKO , TSUNODA YUKITO , IDE SATOSHI
IPC分类号： H04B10/2507 , H04B10/516 , H04B10/556 , H04B10/61 , H04B10/69
CPC分类号： H04B10/677
摘要： PROBLEM TO BE SOLVED: To provide: an optical receiver which can reduce an error rate in the identification of data; an optical receiving circuit; and an optical receiving method. SOLUTION: After an optical signal output from a delay interference instrument is converted to an electric signal, a data signal is generated which is a difference between the positive-phase component and the negative-phase component of the electric signal, a complementary signal is generated which is the sum of the positive-phase component and the negative-phase component of the electric signal, and a difference between the generated data signal and the generated complementary signal is calculated. Thus, the electric signal is output with fluctuations suppressed in phase potential. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供：可以减少数据识别中的错误率的光接收机; 光接收电路; 和光接收方法。解决方案：从延迟干扰仪输出的光信号转换为电信号后，产生数据信号，该信号是电信号的正相分量与负相分量之差，互补产生信号，其是电信号的正相分量和负相位分量的和，并且计算所生成的数据信号和产生的互补信号之间的差。因此，电信号以相位电位抑制的波动输出。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2006074214A Optical receiving device 审中-公开
标题翻译：光接收装置
公开(公告)号：JP2006074214A
公开(公告)日：2006-03-16
申请号：JP2004252815
申请日：2004-08-31
申请人： Fujitsu Ltd , 富士通株式会社
发明人： NAKAMOTO KENICHI , IDE SATOSHI , MORI KAZUYUKI , TANAKA HIROMASA
IPC分类号： H04B10/40 , H04B10/07 , H04B10/50 , H04B10/60 , H04B10/67 , H04B10/69
CPC分类号： H03K5/1565 , H03F3/087 , H03F2200/321 , H03F2200/462 , H03F2200/465 , H04B10/66
摘要： PROBLEM TO BE SOLVED: To provide an optical receiving device where a reception characteristic in an optical reception system is improved.
SOLUTION: The device is provided with a photoelectric conversion element 1 receiving an optical signal and performing light/electric conversion and a data detection part 2 detecting data modulated by the optical signal by using an identification level on the optical signal received by the photoelectric conversion element 1. The device is provided with an identification level control part 3 which feed forward-controls the identification level used in the data detection part 2 based on a level of the received optical signal.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：提供光接收系统中的接收特性提高的光接收装置。解决方案：该装置设置有接收光信号并执行光/电转换的光电转换元件1，以及数据检测部分2，通过使用由光信号接收的光信号上的识别电平来检测由光信号调制的数据光电转换元件1.该装置设置有识别电平控制部分3，其基于所接收的光信号的电平向前控制数据检测部分2中使用的识别电平。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2005099682A Optical switch controller and moving body controller 有权
标题翻译：光开关控制器和移动体控制器
公开(公告)号：JP2005099682A
公开(公告)日：2005-04-14
申请号：JP2004107982
申请日：2004-03-31
申请人： Fujitsu Ltd , 富士通株式会社
发明人： IDE SATOSHI , MORI KAZUYUKI , TAKAHASHI TAKESUKE , MATSUYAMA SATORU
IPC分类号： G02B26/08 , G02B6/35 , H04Q11/00
CPC分类号： G02B6/3588 , G02B6/3518 , G02B6/3556 , G02B6/357 , G02B6/3584 , H04Q11/0005 , H04Q2011/003 , H04Q2011/0039
摘要： PROBLEM TO BE SOLVED: To conduct highly precise control so as to reduce residual vibration, while conducting moving control of a moving body such as a tilt mirror or the like. SOLUTION: A processing section 11 outputs driving signals which control the angle of a tilt mirror 1 and the drive signals are D/A converted by a D/A converter 12, raised to higher voltages by a high voltage amplifier 13 and supplied to the tilt mirror 1. The capacitance of the tile mirror 1 is varied corresponding to a change in the angle of the tilt mirror 1. A mirror angle detection section 14 detects the capacitance and feeds back the detected capacitance to the processing section 11 as a correction value. The processing section 11 corrects the drive signals by using the correction value which is obtained, while the angle of the tile mirror 1 is actually varied. Thus, angular control of the tilt mirror 1 is conducted in a highly precise manner. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：在进行诸如倾斜镜等移动体的移动控制的同时，进行高精度的控制以减少残余振动。解决方案：处理部分11输出控制倾斜镜1的角度并且驱动信号由D / A转换器12转换为D / A的驱动信号，由高压放大器13升高到更高的电压，并提供相对于倾斜镜1的角度的变化，瓦镜1的电容变化。镜角检测部14检测电容，并将检测到的电容反馈到处理部11，作为校正值。处理部分11通过使用所获得的校正值来校正驱动信号，同时瓦片镜1的角度实际上是变化的。因此，以高度精确的方式进行倾斜镜1的角度控制。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JPH11122188A LIGHT SIGNAL RECEPTION DEVICE/METHOD 失效
公开(公告)号：JPH11122188A
公开(公告)日：1999-04-30
申请号：JP28698297
申请日：1997-10-20
申请人： FUJITSU LTD
发明人： IDE SATOSHI
IPC分类号： H04B10/293 , H04B10/07 , H04B10/2507 , H04B10/40 , H04B10/50 , H04B10/564 , H04B10/572 , H04B10/60 , H04B10/69 , H04B10/14 , H04B10/04 , H04B10/06 , H04B10/26 , H04B10/28
摘要： PROBLEM TO BE SOLVED: To speedily stabilize a gain to optimum one without a transient response (overshoot) in receiving respective cell signals by providing a dummy system gain variable amplification part, a storage part holding gain information and a signal system gain variable amplification part. SOLUTION: A preamplifier 12 amplifies output from a photodiode 11 receiving a cell signal CL transmitted from respective subscribers and outputs it as an input signal Sin. The dummy system gain variable amplification part 21 amplifies the input signal Sin by feedback control with the variable gain and generates a dummy amplification signal having prescribed output amplitude and stores gain information Ig denoting the gain in the storage part 22. The signal system gain variable amplification part 23 amplifies the input signal Sin which is continuously received by feed forward control with the gain shown by gain information Ig which is read from the storage part 22 and generates an amplification signal Sa having a prescribed output amplitude.

6. 发明专利

JPH1049244A REFERENCE CURRENT AND VOLTAGE CIRCUIT AND DIFFERENTIAL AMPLIFICATION DEVICE 失效
公开(公告)号：JPH1049244A
公开(公告)日：1998-02-20
申请号：JP19881796
申请日：1996-07-29
申请人： FUJITSU LTD
发明人： IDE SATOSHI
IPC分类号： G05F3/24 , H03F1/30 , H03F3/45
摘要： PROBLEM TO BE SOLVED: To provide an amplification device which has variation in amplification gain suppressed as to an amplification device which uses a MOS-FET. SOLUTION: The device has a 1st MOS-FET and a 2nd MOS-FET which has nearly the same characteristics with the said FET and also has a reference resistance connected to its source or drain, the sources of those MOS-FETs or reference resistances connected to the source of the 1st MOS-FET and the source of the 2nd MOS-FET are connected in common, and the ratio of currents flowing to those MOS-FETs is held at a previously set value. Further, a control means is provided which controls the composite current of currents flowing to those MOS-FETs so that a potential which is nearly equal to the difference voltage between the gate-source voltage of the 1st MOS-FET and the gate-source voltage of the 2nd MOS-FET is applied across the reference voltages; and the controlled composite current is used as a reference current and a voltage developed at the source-side terminal of the MOS-FETs connected in common is used as a reference voltage.

7. 发明专利

JPH06140668A SEMICONDUCTOR DEVICE 失效
公开(公告)号：JPH06140668A
公开(公告)日：1994-05-20
申请号：JP28777092
申请日：1992-10-26
申请人： FUJITSU LTD
发明人： IDE SATOSHI
IPC分类号： H01L33/06 , H01L33/14 , H01L33/30 , H01L33/40 , H01S5/00 , H01L33/00 , H01S3/18
摘要： PURPOSE:To enable the structure of suppressing the diffusion of acceptor impurities from a p-type layer to a low-impurity concentration active layer, by using the p-type layer contained especially in acceptor impurities, concerning a III-V compound semiconductor device. CONSTITUTION:A group III-V compound semiconductor layer 11 performing capture action of acceptor impurities is made on the p-type semiconductor layer 10 of group III-V compound containing acceptor impurities. A III-V compound semiconductor active layer 13 low in impurity concentration is made on this semiconductor layer 11. That is, the diffusion of impurities from a substrate 10 to the active layer 13 is suppressed by the acceptor impurity capture action of the III-V compound semiconductor layer. The diffusion capture action is brought about by the mutual action between lattice defect and acceptor impurities. Accordingly, if capture regions are provided in a plurality of sections, the influence of diffusion to the active layer 13 can be controlled more effectively.

8. 发明专利

JPH05218585A SEMICONDUCTOR LIGHT EMITTING DEVICE 失效
公开(公告)号：JPH05218585A
公开(公告)日：1993-08-27
申请号：JP1799092
申请日：1992-02-04
申请人： FUJITSU LTD
发明人： IDE SATOSHI
IPC分类号： H01L33/14 , H01L33/30 , H01S5/00 , H01S5/042
摘要： PURPOSE:To enhance light emission efficiency thereby to reduce threshold current, by preventing the impurity diffusion from the buried layer to the active layer in a mesa stripe type semiconductor light emitting device of a buried structure. CONSTITUTION:In a semiconductor light emitting device comprising a mesa 5 wherein a lower clad layer 2 of a first conductivity type, an active layer 3, and an upper clad layer 4 of a second conductivity type, which are sequentially deposited on a substrate 1 of the first conductivity type, are formed in stripes, a buried layer 7 of the second conductivity type for burying the outside of the mesa 5, a contact layer 9 of the second conductivity type deposited on the mesa 5, and electrodes 10 and 11 formed on the rear of the substrate 1 and on the surface of the contact layer 9, provided between the side wall of the mesa 5 and the buried layer 7 is a diffusion barrier layer 6 made of an n-type conductivity type or impurity-free semiconductor and having a forbidden band width which is the same as or greater than either the lower clad layer 2 or the upper clad layer 4.

9. 发明专利

JP2009086268A Multilevel optical phase modulator 有权
标题翻译：多光学相位调制器
公开(公告)号：JP2009086268A
公开(公告)日：2009-04-23
申请号：JP2007255641
申请日：2007-09-28
申请人： Fujitsu Ltd , 富士通株式会社
发明人： IDE SATOSHI , TSUNODA YUKITO
IPC分类号： G02F1/01 , H04B10/07 , H04B10/516 , H04B10/54 , H04B10/556 , H04B10/61
CPC分类号： H04B10/5053 , H04B10/5561
摘要： PROBLEM TO BE SOLVED: To provide a mechanism for taking out monitor light unaffected by a multilevel optical phase-modulated component. SOLUTION: The multilevel optical phase modulator includes a phase-shift unit 6 that controls phases of plural (n, n is an integral number equal to or greater than 2) input lights, plural (n, n is an integral number equal to or greater than 2) phase modulating units 3-1 and 3-2 that respectively phase-modulate the input lights from the phase-shift units, a first coupling unit 2f that couples and outputs the phase-modulated lights from the plural phase modulating units 3-1 and 3-2 as multilevel optical phase-modulated signal light, and a second coupling unit 2d that couples and outputs non-phase-modulated lights from the plural phase modulating units as coupled light. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于取出不受多级光学相位调制部件影响的监视光的机构。解决方案：多电平光相位调制器包括控制多个（n，n为等于或大于2的整数）的输入光的相位的相移单元6，多个（n，n为整数）大于2）相位调制单元3-1和3-2，其分别相移来自相移单元的输入光;第一耦合单元2f，其耦合并输出来自多相位调制的相位调制光单元3-1和3-2作为多电平光相位调制信号光，以及第二耦合单元2d，其耦合并输出来自多个相位调制单元的非相位调制光作为耦合光。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2000174576A VARIABLE GAIN AMPLIFIER 失效
公开(公告)号：JP2000174576A
公开(公告)日：2000-06-23
申请号：JP34881098
申请日：1998-12-08
申请人： FUJITSU LTD
发明人： SHIBATA KOHEI , IDE SATOSHI
IPC分类号： H03F3/45 , H03G1/00 , H03G3/30
摘要： PROBLEM TO BE SOLVED: To suppress occurrence of malfunction and to attain a low voltage operation of a variable gain amplifier by making a gain change monotonous against a change in a gain control signal with respect to the variable gain amplifier employing a differential pair to control the gain with the gain control signal. SOLUTION: The variable gain amplifier is provided with a high gain differential pair Q1, a low gain differential pair Q2 that are interconnected to share load resistors R1, R2 in common with respect to the same output polarity and receive the same bias current, a gain changeover differential pair Q3 or a bias circuit configuring a current mirror with a gain changeover differential pair connected between both the differential pairs and a bias current source B1 used in common for both the differential pairs. The operation of both the differential pairs Q1, Q2 is selected by a gain control signal and a current source B2 is used to supply a prescribed offset current Ib to at least the low gain differential pair Q2 in both the differential pairs Q1, Q2.

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