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1. 发明授权

US07801450B2 Optical transmitter and optical communication system 失效
标题翻译：光发射机和光通信系统
公开(公告)号：US07801450B2
公开(公告)日：2010-09-21
申请号：US11663743
申请日：2004-11-08
申请人： Jun′ichi Abe , Katsuhiro Shimizu
发明人： Jun′ichi Abe , Katsuhiro Shimizu
IPC分类号： H04B10/04
CPC分类号： H04B10/50575 , G02F1/0123 , H04B10/07957 , H04B10/505 , H04B10/5057 , H04B10/50572 , H04B10/50593 , H04B10/50595 , H04B10/572
摘要： An optical transmitter includes an optical modulator, an optical coupler, a crosspoint monitoring unit, a reference-value setting unit, and a bias circuit. The optical coupler splits an optical signal output from the optical modulator into a plurality of optical signals. The crosspoint monitoring unit receives part of the optical signals, and monitors a crosspoint of the optical signal output from the optical modulator. The reference-value setting unit sets a bias reference value to be assigned to the optical modulator based on an output of the crosspoint monitoring unit so that the crosspoint is constant. The bias circuit applies a bias to the optical modulator based on the bias reference value.
摘要翻译：光发射机包括光调制器，光耦合器，交叉点监测单元，基准值设定单元和偏置电路。光耦合器将从光调制器输出的光信号分离成多个光信号。交叉点监视单元接收部分光信号，并监视从光调制器输出的光信号的交叉点。基准值设定单元基于交叉点监视单元的输出设定分配给光调制器的偏置基准值，使得交叉点恒定。偏置电路基于偏置参考值向光学调制器施加偏置。

2. 发明申请

US20080107428A1 Optical Transmitter and Optical Communication System 失效
标题翻译：光发射机和光通信系统
公开(公告)号：US20080107428A1
公开(公告)日：2008-05-08
申请号：US11663743
申请日：2004-11-08
申请人： Jun'ichi Abe , Katsuhiro Shimizu
发明人： Jun'ichi Abe , Katsuhiro Shimizu
IPC分类号： H04B10/04
CPC分类号： H04B10/50575 , G02F1/0123 , H04B10/07957 , H04B10/505 , H04B10/5057 , H04B10/50572 , H04B10/50593 , H04B10/50595 , H04B10/572
摘要： An optical transmitter includes an optical modulator, an optical coupler, a crosspoint monitoring unit, a reference-value setting unit, and a bias circuit. The optical coupler splits an optical signal output from the optical modulator into a plurality of optical signals. The crosspoint monitoring unit receives part of the optical signals, and monitors a crosspoint of the optical signal output from the optical modulator. The reference-value setting unit sets a bias reference value to be assigned to the optical modulator based on an output of the crosspoint monitoring unit so that the crosspoint is constant. The bias circuit applies a bias to the optical modulator based on the bias reference value.
摘要翻译：光发射机包括光调制器，光耦合器，交叉点监测单元，基准值设定单元和偏置电路。光耦合器将从光调制器输出的光信号分离成多个光信号。交叉点监视单元接收部分光信号，并监视从光调制器输出的光信号的交叉点。基准值设定单元基于交叉点监视单元的输出设定分配给光调制器的偏置基准值，使得交叉点恒定。偏置电路基于偏置参考值向光学调制器施加偏置。

3. 发明申请

US20080092009A1 Error Correction Coding Apparatus and Error Correction Decoding Apparatus 有权
标题翻译：纠错编码装置和纠错解码装置
公开(公告)号：US20080092009A1
公开(公告)日：2008-04-17
申请号：US11662085
申请日：2004-09-09
申请人： Yoshikuni Miyata , Hideo Yoshida , Kazuhide Ouchi , Katsuhiro Shimizu , Tatsuya Kobayashi
发明人： Yoshikuni Miyata , Hideo Yoshida , Kazuhide Ouchi , Katsuhiro Shimizu , Tatsuya Kobayashi
IPC分类号： H03M13/27 , G06F11/16
CPC分类号： H03M13/2909 , H03M13/1515 , H03M13/152 , H03M13/27
摘要： An error correction coding apparatus includes a frame generating unit for buffering inputted information sequence data in frame buffers which correspond to units to be coded, respectively, a first interleaving unit for rearranging the information sequence data within two or more of the frame buffers, a first coding unit for coding the information sequence data rearranged by the first interleaving unit for each of the frame buffers, and for buffering an error correcting code generated thereby in the frame buffer, a first deinterleaving unit for rearranging code word sequence data in the frame buffer which is coded by the first coding unit according to a procedure which is reverse to that which the first interleaving unit uses, and a multiplexing unit for outputting, as transmission information, the code word sequence data rearranged by the first deinterleaving unit.
摘要翻译：纠错编码装置包括：帧产生单元，用于分别缓冲对应于要编码的单元的帧缓冲器中的输入信息序列数据;第一交织单元，用于在两个或更多个帧缓冲器内重新排列信息序列数据;第一编码单元，用于编码由第一交织单元为每个帧缓冲器重排的信息序列数据，并且用于缓冲在帧缓冲器中由此产生的纠错码;第一解交织单元，用于重新排列帧缓冲器中的码字序列数据，根据与第一交织单元使用的过程相反的过程由第一编码单元编码;以及复用单元，用于输出由第一解交织单元重新排列的码字序列数据作为发送信息。

4. 发明申请

US20070229118A1 Phase Comparator 审中-公开
标题翻译：相位比较器
公开(公告)号：US20070229118A1
公开(公告)日：2007-10-04
申请号：US11504694
申请日：2006-08-16
申请人： Tatsuya Kobayashi , Hitoyuki Tagami , Katsuhiro Shimizu , Kenkichi Shimomura
发明人： Tatsuya Kobayashi , Hitoyuki Tagami , Katsuhiro Shimizu , Kenkichi Shimomura
IPC分类号： H03D13/00
CPC分类号： H03D13/003
摘要： A phase comparator includes: first and second detecting units for detecting an amplitude value of a clock signal at falling timing or rising timing of a data signal; an edge comparing unit for identifying as to whether the first detecting unit detects an amplitude value under a rising state or a falling state to output a first identification result, and for identifying as to whether the second detecting unit detects an amplitude value under a rising state or a falling state to output a second identification result; first and second polarity inverting units for inverting a polarity of output of the first and second detecting units; and a signal selecting unit for selecting one of output values of the first and second polarity inverting units in response to a polarity of the data signal to output the selected output value.
摘要翻译：相位比较器包括：第一和第二检测单元，用于检测下降定时时钟信号的振幅值或数据信号的上升定时; 边缘比较单元，用于识别第一检测单元是否在升高状态或下降状态下检测振幅值以输出第一识别结果，并且用于识别第二检测单元是否在升高状态下检测振幅值或下降状态输出第二识别结果; 第一和第二极性反转单元，用于反转第一和第二检测单元的输出的极性; 以及信号选择单元，用于响应于数据信号的极性来选择第一和第二极性反转单元的输出值之一，以输出所选择的输出值。

5. 发明授权

US06657778B1 Optical amplification repeater and optical amplification repeating and transmitting system 失效
标题翻译：光放大中继器和光放大重复传输系统
公开(公告)号：US06657778B1
公开(公告)日：2003-12-02
申请号：US09806456
申请日：2001-04-18
申请人： Kuniaki Motoshima , Katsuhiro Shimizu , Junichi Nakagawa , Naoki Suzuki
发明人： Kuniaki Motoshima , Katsuhiro Shimizu , Junichi Nakagawa , Naoki Suzuki
IPC分类号： H04B1012
CPC分类号： H04B10/2941 , H04B10/296 , H04B2210/258 , H04J14/0221
摘要： Light signals of first to n-th bands amplified en bloc undergo proper attenuation through an adjustable optical attenuator in conformance with attenuation in an optical fiber connected to input of an optical amplifying repeater apparatus, whereon the light signals are demultiplexed or separated into individual bands and amplified by first to n-th fixed-gain optical amplifiers (#1, . . . , #n) each having a high fixed gain in the respective bands to be subsequently multiplexed by an optical multiplexer and then sent out onto a transmission line. A monitoring light branching device extracts a part of light power of a specific monitoring wavelength, which is then fed to an adjustable attenuator control circuit which controls the attenuation factor of the adjustable optical attenuator so that the light power of the specific wavelength remains constant. The gain of the optical amplifying repeater apparatus at the specific wavelength can thus be determined. By employing as the optical amplifying medium a substantially homogeneous medium, the gain for the other wavelengths can be fixed. The optical amplifying repeater apparatus whose gain is essentially independent of the change in the number of the wavelengths can thus be realized.
摘要翻译：第一至第n个频带放大的光信号通过可调节的光衰减器经过适当的衰减，其符合连接到光放大中继器设备的输入的光纤中的衰减，其中光信号被解复用或分离成单个频带，由第一至第n固定增益光放大器（＃1，...，#n）放大，每个固定增益光放大器（＃1，...，#n）在各个频带中具有高固定增益，随后由光复用器复用，然后发送到传输线。监视光分支装置提取特定监视波长的一部分光功率，然后将其馈送到可调节衰减器控制电路，该可调节衰减器控制电路控制可调节光衰减器的衰减因子，使得特定波长的光功率保持恒定。因此可以确定特定波长的光放大中继器装置的增益。通过采用基本均匀的介质作为光放大介质，可以固定其它波长的增益。因此可以实现其增益基本上与波长数量的变化无关的光放大中继器装置。

6. 发明申请

US20130039643A1 OPTICAL COMMUNICATION SYSTEM 审中-公开
标题翻译：光通信系统
公开(公告)号：US20130039643A1
公开(公告)日：2013-02-14
申请号：US13642723
申请日：2010-04-23
申请人： Toshiyuki Tokura , Katsuhiro Shimizu , Kazuyuki Ishida , Takashi Mizuochi
发明人： Toshiyuki Tokura , Katsuhiro Shimizu , Kazuyuki Ishida , Takashi Mizuochi
IPC分类号： H04J14/02
CPC分类号： H04J14/0297 , H04B10/032 , H04J14/0295
摘要： An optical communication system including optical transmission systems each includes a transmission processing unit and a receiving processing unit, wherein the transmission processing unit includes an optical transmission unit that converts electric signals into optical signals, an auxiliary optical transmission unit that converts a part of the electric signals into an optical signal having a wavelength other than wavelengths of the optical signals generated by the optical transmission unit, and outputs the generated optical signal to a different transmission processing unit, and a wavelength multiplexing unit, and the receiving processing unit includes a wavelength demultiplexing unit, an optical receiving unit that converts the optical signals having the wavelengths of the optical signals generated by the optical transmission unit into electric signals, respectively, and an auxiliary optical receiving unit that converts the optical signal having the wavelength of the optical signal generated by the auxiliary optical transmission unit.
摘要翻译：包括光传输系统的光通信系统各自包括传输处理单元和接收处理单元，其中传输处理单元包括将电信号转换为光信号的光传输单元，将一部分电信号转换成具有由光传输单元生成的光信号的波长以外的波长的光信号，并将生成的光信号输出到不同的发送处理单元和波长复用单元，并且接收处理单元包括波长解复用单元，光接收单元，其将具有由光传输单元生成的光信号的波长的光信号分别转换为电信号;以及辅助光接收单元，其将具有光信号波长的光信号由辅助光传输单元产生。

7. 发明授权

US08059971B2 Optical reception device 有权
标题翻译：光接收装置
公开(公告)号：US08059971B2
公开(公告)日：2011-11-15
申请号：US11792306
申请日：2004-12-28
申请人： Shunsuke Mitani , Kazuyuki Ishida , Katsuhiro Shimizu
发明人： Shunsuke Mitani , Kazuyuki Ishida , Katsuhiro Shimizu
IPC分类号： H04B10/00 , H04B10/06 , H04B10/04
CPC分类号： H04B10/66
摘要： An optical reception device realizes stabilization of reception sensitivity inexpensively and highly precisely. The optical reception device includes: a Mach-Zehnder type 1-bit delay unit including a one-terminal input port and two-terminal output ports for decoding an optical difference phase shift keying (DPSK) signal and provided with one or more phase control functions to control the phase state of light; photoelectric conversion means for branching a portion of an optical output signal output from the one-side output port of the Mach-Zehnder type 1-bit delay unit, to convert the branched portion into an electric signal; and a phase control unit for controlling the phase state of the Mach-Zehnder type 1-bit delay device by using as an error signal the output signal of the photoelectric conversion means.
摘要翻译：光接收装置实现了廉价高精度的接收灵敏度的稳定化。光接收装置包括：马赫 - 策德尔型1位延迟单元，其包括单端输入端口和用于解码光差分相移键控（DPSK）信号并具有一个或多个相位控制功能的两端输出端口控制光的相位状态; 光电转换装置，用于对从Mach-Zehnder型1位延迟单元的单面输出端口输出的光输出信号的一部分进行分支，将分支部分转换为电信号; 以及相位控制单元，用于通过使用光电转换装置的输出信号作为误差信号来控制马赫 - 曾德尔型1位延迟装置的相位状态。

8. 发明申请

US20100033627A1 COMMUNICATION SYSTEM, TRANSMISSION APPARATUS, TRANSMISSION METHOD, RECEPTION APPARATUS AND RECEPTION METHOD 有权
标题翻译：通信系统，传输装置，传输方法，接收装置和接收方法
公开(公告)号：US20100033627A1
公开(公告)日：2010-02-11
申请号：US12450142
申请日：2007-11-02
申请人： Toshihide Hayashi , Masayuki Tsumura , Koki Tsumori , Katsuhiro Shimizu , Ban Kawamura
发明人： Toshihide Hayashi , Masayuki Tsumura , Koki Tsumori , Katsuhiro Shimizu , Ban Kawamura
IPC分类号： G06F13/14 , H04N5/04
CPC分类号： H04N7/083 , G09G5/005 , G09G5/006 , G09G2370/12 , H04L12/2805 , H04N5/38 , H04N5/76 , H04N5/765 , H04N5/775 , H04N5/85 , H04N7/0125 , H04N21/43632 , H04N21/43635
摘要： [Object]To make it possible for the reception side to carry out an optimum process for an image signal (image data) depending upon the type of a content.[Solving Means]An AV system 40 composed of an HD recorder 41 and a display unit 42 uses a communication interface of the HDMI. An HDMI source 53 of the HD recorder 41 transmits image data (image signal) in the form of differential signals to an HDMI sink 61 of the display unit 42 through three TMDS channels. The HDMI source 53 inserts content identification information for the identification of the type of a content of image data to be transmitted into an AVI InfoFrame packet placed in a blanking period. A control section 64 of the display unit 42 controls operation of a display processing section 62 which carries out a process for displaying for the image data based on the content identification information (ITC, CT1 and CT0) received by the HDMI sink 61 and a display section 63 for displaying an image.
摘要翻译： [对象]为了使接收侧可以根据内容的类型对图像信号（图像数据）进行最佳处理。 [解决方案]由HD记录器41和显示单元42组成的AV系统40使用HDMI的通信接口。 HD记录器41的HDMI源53通过三个TMDS信道将差分信号形式的图像数据（图像信号）发送到显示单元42的HDMI接收器61。 HDMI源53将用于识别要发送的图像数据的内容的类型的内容识别信息插入到设置在消隐期间的AVI InfoFrame分组中。显示单元42的控制部分64控制显示处理部分62的操作，该显示处理部分62基于由HDMI接收器61接收的内容识别信息（ITC，CT1和CT0）以及显示器61执行用于显示图像数据的处理用于显示图像的部分63。

9. 发明授权

US07501914B2 Bias circuit 失效
标题翻译：偏置电路
公开(公告)号：US07501914B2
公开(公告)日：2009-03-10
申请号：US11587678
申请日：2004-04-28
申请人： Kenkichi Shimomura , Takashi Sugihara , Katsuhiro Shimizu
发明人： Kenkichi Shimomura , Takashi Sugihara , Katsuhiro Shimizu
IPC分类号： H03H7/00 , H03H7/38 , H01P3/00
CPC分类号： H03H7/38 , H03F1/30 , H03F3/189 , H04B2203/5483
摘要： A bias circuit that supplies bias voltage or bias current to one end of a transmission line includes an inductor that prohibits a high frequency component of a baseband signal transmitted on the transmission line and passes a frequency component near direct current of the baseband signal, and an impedance-decrease prevention element that prevents impedance from decreasing, when viewed from the transmission line, that is produced due to a resonance between a parasitic capacitance generated due to the inductor and an inductance of the inductor.
摘要翻译：向传输线路的一端提供偏置电压或偏置电流的偏置电路包括：电阻器，其抑制在传输线路上传输的基带信号的高频分量，并使基带信号的直流电流附近的频率分量通过，阻抗减小预防元件，其防止由于由于电感器产生的寄生电容和电感器的电感之间的谐振而从传输线看到的阻抗减小。

10. 发明授权

US6028695A Optical modulating apparatus 失效
标题翻译：光调制装置
公开(公告)号：US6028695A
公开(公告)日：2000-02-22
申请号：US124993
申请日：1998-07-30
申请人： Aritomo Uemura , Takashi Mizuochi , Katsuhiro Shimizu , Kiwami Matsushita , Tadayoshi Kitayama , Masatoshi Suzuki , Hidenori Taga , Shu Yamamoto
发明人： Aritomo Uemura , Takashi Mizuochi , Katsuhiro Shimizu , Kiwami Matsushita , Tadayoshi Kitayama , Masatoshi Suzuki , Hidenori Taga , Shu Yamamoto
IPC分类号： G02F1/03 , H04B10/07 , H04B10/516 , H04B10/54 , H04B10/548 , H04B10/58 , H04B10/61 , G02F1/035 , G02F1/055
CPC分类号： G02F1/0327 , G02F2203/25
摘要： When an intensity modulating operation and a phase modulating operation are carried out by employing a 2-electrode MachZehnder type optical modulator preferably a LN-MZ type optical modulator, a drive signal of this 2-electrode LN-MZ type optical modulator is produced from an intensity modulation signal and a phase modulation signal with a low loss and a simple arrangement. A optical modulating apparatus includes a splitter/combiner structured to split an intensity modulation signal inputted into a first input terminal into a first electric signal having an in-phase relationship with that of the intensity modulation signal and second electric signal having an inverse phase relationship therewith, split a phase modulation signal inputted into a second input terminal into a third electric signal having an in-phase relationship with that of the phase modulation signal an also a fourth electric signal having an in-phase relationship therewith, combine the first electric signal with the fourth electric signal to thereby output a first combined signal, and combine the second electric signal with the third electric signal to thereby output a second combined signal; and an optical modulating means structured to split a light carrier wave entered from a light source into two light carrier waves, and to optically modulate the two sets of the split light carrier waves by using the first combined signal and the second combined signal derived from the splitter/combiner, and combine the two phase-modulated above said light carrier waves to output an optical modulation signal.
摘要翻译：当通过使用优选为LN-MZ型光调制器的2电极MachZehnder型光学调制器进行强度调制操作和相位调制操作时，该2电极LN-MZ型光调制器的驱动信号由强度调制信号和具有低损耗和简单布置的相位调制信号。光调制装置包括：分离器/组合器，被构造成将输入到第一输入端的强度调制信号分成与强度调制信号的同相关系的第一电信号和与其相反的相位关系的第二电信号将输入到第二输入端子的相位调制信号分别成为与相位调制信号同相的同步关系的第三电信号，以及与其同相关系的第四电信号，将第一电信号与第四电信号，从而输出第一组合信号，并将第二电信号与第三电信号组合，从而输出第二组合信号; 以及光调制装置，被构造成将从光源进入的光载波分成两个光载波，并且通过使用从第二组合信号导出的第一组合信号和第二组合信号对两组分裂光载波进行光学调制分离器/组合器，并且组合在所述轻载波上的两个相位调制以输出光调制信号。

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