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11. 发明授权

US07650072B2 Method of upgrading optical node, and an optical node apparatus 有权
标题翻译：光节点升级方法，光节点装置
公开(公告)号：US07650072B2
公开(公告)日：2010-01-19
申请号：US12399275
申请日：2009-03-06
申请人： Miki Onaka , Yasushi Sugaya , Takahumi Terahara , Satoru Okano , Takehiro Fujita , Hiroaki Tomofuji , Ichiro Nakajima
发明人： Miki Onaka , Yasushi Sugaya , Takahumi Terahara , Satoru Okano , Takehiro Fujita , Hiroaki Tomofuji , Ichiro Nakajima
IPC分类号： H04B10/00 , H04B10/08 , H04B10/12 , H04J14/02
CPC分类号： H04J14/0221 , H04J14/0204 , H04J14/0212 , H04J14/0219
摘要： An optical node apparatus according to the present invention amplifies a WDM signal light input to an input port, and thereafter, branches the amplified WDM signal light by an optical branching coupler to send the branched lights to first and second optical paths, and selects the light propagated through the first optical path by an optical switch to amplify the selected light by a post-amplifier, thereby outputting the amplified light from an output port, when the optical node apparatus is operated as an optical amplification repeating node. When the operational state is upgraded to an optical add/drop multiplexing node, an OADM section is connected between a set of connecting ports on the second optical path, and the adjustment of the OADM section is performed utilizing the WDM signal light branched by the optical branching coupler, and thereafter, the switching of the optical switch is performed to select the light on the second optical path side. As a result, since the switching the operational state from the optical amplification repeating node to the OADM node can be performed in a short time, it becomes possible to provide the continued communication service at the low initial installation cost.
摘要翻译：根据本发明的光节点装置放大输入到输入端口的WDM信号光，然后通过光分路耦合器对放大的WDM信号光进行分支，以将分支光发送到第一和第二光路，并选择光通过光开关通过第一光路传播，以通过后置放大器放大所选择的光，从而当光节点装置作为光放大重复节点工作时，从输出端口输出放大的光。当操作状态升级为光分插复用节点时，OADM部分连接在第二光路上的一组连接端口之间，并且利用由光学分支的WDM信号光进行OADM部分的调整分支耦合器，然后进行光开关的切换以选择第二光路侧的光。结果，由于可以在短时间内将操作状态从光放大重复节点切换到OADM节点，所以可以以低的初始安装成本提供持续的通信服务。

12. 发明申请

US20090162067A1 OPTICAL TRANSMISSION DEVICE 失效
标题翻译：光传输设备
公开(公告)号：US20090162067A1
公开(公告)日：2009-06-25
申请号：US12338184
申请日：2008-12-18
申请人： Hideki Kobayashi , Takehiro Fujita
发明人： Hideki Kobayashi , Takehiro Fujita
IPC分类号： H04J14/02
CPC分类号： H04J14/0221 , H04J14/0204 , H04J14/0209 , H04J14/0212
摘要： An optical apparatus includes a first optical amplifier for adjusting an output value to a constant level; an optical signal processor located before the first optical amplifier and processing the optical signal; a second optical amplifier located before the optical signal processor and subjected to automatic gain control for adjusting a gain constant; and a controller detecting a level of the optical signal at an output of the second optical amplifier. The controller adjusts a level of an output value of the first optical amplifier such that the level of the optical signal at the output of the second optical amplifier is held at the optimum value if the detected level of the optical signal differs from an optimum value, compensates for a loss caused in the optical signal processor and maintains the level of the optical signal at the output of the second optical amplifier at the optimum value.
摘要翻译：光学装置包括用于将输出值调整到恒定水平的第一光学放大器; 位于第一光放大器之前并处理光信号的光信号处理器; 位于光信号处理器之前并经受用于调节增益常数的自动增益控制的第二光放大器; 以及控制器，其检测所述第二光放大器的输出处的所述光信号的电平。控制器调节第一光放大器的输出值的电平，使得如果检测到的光信号的电平与最佳值不同，则将第二光放大器的输出处的光信号的电平保持在最佳值，补偿在光信号处理器中造成的损耗，并将第二光放大器的输出处的光信号的电平保持在最佳值。

13. 发明授权

US07313327B2 Switching control device for wavelength-division multiplexing optical signal 有权
标题翻译：用于波分复用光信号的开关控制装置
公开(公告)号：US07313327B2
公开(公告)日：2007-12-25
申请号：US11004222
申请日：2004-12-02
申请人： Takehiro Fujita , Futoshi Izumi
发明人： Takehiro Fujita , Futoshi Izumi
IPC分类号： H04J14/00
CPC分类号： H04J14/02 , H04J14/0212 , H04J14/0227 , H04J14/0241 , H04J14/0279 , H04J14/0283 , H04J14/0291 , H04Q11/0005 , H04Q2011/0039 , H04Q2011/0069 , H04Q2011/0077 , H04Q2011/0088
摘要： In a WDM optical communication network composed of a transmitter, an optical switching device (an optical cross-connect, an optical router, etc.) and a receiver, when transmitting switching information to the optical switching device, the transmitter suspends the transmission of a main signal by a wavelength for switching of a WDM optical signal and transmits switching information instead. Upon receipt of this switching information, the optical switching device switches a route, re-starts the transmission of a main signal after the switching is completed and transfers the main signal through the switched route. The signal speed of switching information is sufficiently lower than the modulation speed of the main signals with other wavelengths. By designing the receiving device so that the receiving device of switching information reacts only to this low modulation speed, the receiving device can extract only switching information even when receiving the entire WDM optical signal including the main signals with other wavelengths.
摘要翻译：在由发射机，光交换设备（光交叉连接，光路由器等）和接收机组成的WDM光通信网络中，当向光交换设备发送切换信息时，发射机暂停传输主信号用于切换WDM光信号的波长，并传输切换信息。在接收到该切换信息时，光切换装置切换路由，在切换完成后重新开始主信号的发送，并通过切换路由传送主信号。切换信息的信号速度足够低于其他波长的主信号的调制速度。通过设计接收装置，使得切换信息的接收装置仅对该低调制速度作出反应，即使在接收包括具有其他波长的主信号的整个WDM光信号时，接收装置也可以仅提取切换信息。

14. 发明授权

US07139347B2 Parallel signal automatic phase adjusting circuit 有权
公开(公告)号：US07139347B2
公开(公告)日：2006-11-21
申请号：US10023123
申请日：2001-10-30
申请人： Takehiro Fujita , Futoshi Izumi
发明人： Takehiro Fujita , Futoshi Izumi
IPC分类号： H04L7/00
CPC分类号： H03L7/06 , H04L7/033 , H04L7/0337 , H04L25/14
摘要： A parallel signal automatic phase adjusting circuit includes a signal generator for generating a signal having a predetermined frequency, an oscillating circuit for generating a clock signal having a frequency smaller than an inputted clock signal by the predetermined frequency, and adjusting circuits, respectively corresponding data signal channels, each adjusting the generated clock signal so as to be synchronized with the corresponding data signal, based on an arithmetic operation of trigonometric functions using both phase comparing information, derived from comparison between the corresponding data signal and the generated clock signal, and frequency information regarding the corresponding data signal, the generated clock signal and the signal from the signal generator. The circuit is useful, for example, when digital data transmitted through a large number of parallel data signal lines between data terminals, because the size of and the cost for the circuit are reduced.

15. 发明申请

US20060221435A1 Wavelength division multiplexing device, an optical leakage prevention method, and a wavelength division multiplexing communication system 有权
公开(公告)号：US20060221435A1
公开(公告)日：2006-10-05
申请号：US11155537
申请日：2005-06-20
申请人： Taizo Maeda , Satoru Okano , Takehiro Fujita
发明人： Taizo Maeda , Satoru Okano , Takehiro Fujita
IPC分类号： H01S3/00
CPC分类号： H04J14/0212 , H04B10/296 , H04B2210/258 , H04J14/0221
摘要： A wavelength division multiplexing (WDM) device, an optical leakage prevention method, and a WDM communication system are disclosed. The WDM device includes a level adjusting unit for receiving an optical signal, for adjusting the optical power level of the received optical signal, and for outputting the level-adjusted optical signal; and a controlling unit for analyzing the optical power level of the optical signal output from the level adjusting unit, for controlling the level adjusting unit so that the optical power level of the output optical signal stays at a constant level, and for transitioning to an “off-state” when the optical power level of the output optical signal becomes less than a predetermined disconnection-detection threshold so that the level adjusting unit gives a predetermined attenuation to the input optical signal. The controlling unit transitions from the “off-state” when the optical power level of the output optical signal is greater than a predetermined recovery threshold and an upstream WDM device is not in the “off-state”.

16. 发明申请

US20050135807A1 Switching control device for wavelength-division multiplexing optical signal 有权
标题翻译：用于波分复用光信号的开关控制装置
公开(公告)号：US20050135807A1
公开(公告)日：2005-06-23
申请号：US11004222
申请日：2004-12-02
申请人： Takehiro Fujita , Futoshi Izumi
发明人： Takehiro Fujita , Futoshi Izumi
IPC分类号： H04B10/27 , H04B10/524 , H04B10/58 , H04J14/00 , H04J14/02 , H04Q11/00
CPC分类号： H04J14/02 , H04J14/0212 , H04J14/0227 , H04J14/0241 , H04J14/0279 , H04J14/0283 , H04J14/0291 , H04Q11/0005 , H04Q2011/0039 , H04Q2011/0069 , H04Q2011/0077 , H04Q2011/0088
摘要： In a WDM optical communication network composed of a transmitter, an optical switching device (an optical cross-connect, an optical router, etc.) and a receiver, when transmitting switching information to the optical switching device, the transmitter suspends the transmission of a main signal by a wavelength for switching of a WDM optical signal and transmits switching information instead. Upon receipt of this switching information, the optical switching device switches a route, re-starts the transmission of a main signal after the switching is completed and transfers the main signal through the switched route. The signal speed of switching information is sufficiently lower than the modulation speed of the main signals with other wavelengths. By designing the receiving device so that the receiving device of switching information reacts only to this low modulation speed, the receiving device can extract only switching information even when receiving the entire WDM optical signal including the main signals with other wavelengths.
摘要翻译：在由发射机，光交换设备（光交叉连接，光路由器等）和接收机组成的WDM光通信网络中，当向光交换设备发送切换信息时，发射机暂停传输主信号用于切换WDM光信号的波长，并传输切换信息。在接收到该切换信息时，光切换装置切换路由，在切换完成后重新开始主信号的发送，并通过切换路由传送主信号。切换信息的信号速度足够低于其他波长的主信号的调制速度。通过设计接收装置，使得切换信息的接收装置仅对该低调制速度作出反应，即使在接收包括具有其他波长的主信号的整个WDM光信号时，接收装置也可以仅提取切换信息。

17. 发明授权

US06741977B1 Image recording/reproducing apparatus in monitor system 失效
标题翻译：监视器系统中的图像记录/再现装置
公开(公告)号：US06741977B1
公开(公告)日：2004-05-25
申请号：US09493240
申请日：2000-01-28
申请人： Shigeki Nagaya , Takafumi Miyatake , Takehiro Fujita , Akio Nagasaka
发明人： Shigeki Nagaya , Takafumi Miyatake , Takehiro Fujita , Akio Nagasaka
IPC分类号： G06F1730
CPC分类号： H04N5/765 , H04N5/77 , H04N5/775 , H04N7/18 , H04N21/4316 , H04N21/47 , Y10S707/99931 , Y10S707/99932 , Y10S707/99933
摘要： For image recording/reproduction in a monitoring system, a monitoring image signal as inputted is converted into a plurality of time-serial digitized monitoring image frames to be stored temporarily in a first storage area. From the plurality of digitized monitoring image frames stored in the first storage area, a plurality of monitoring image frames relevant to at least one type of concerned event for monitoring are extracted to be stored in a second storage area. A monitored event database having a data structure comprised of elements each containing information concerning a storing location of relevant monitoring image frame in the second storage area and information concerning attributes of the relevant monitoring image frame for each of the monitoring image frames stored in the second storage area is generated to be stored in a third storage area. In response to a perusal request issued by user by using a WEB browser and sent via a network, the monitored event database is searched for acquiring a storing location of plural monitoring image frames relevant to the perusal request in the second storage area to thereby select from the second storage area a plurality of monitoring image frames relevant to the perusal request. The selected plural monitoring image frames are converted into HTML data to be sent to a display device connected via a network to be displayed on a display device in a two-dimensional layout or in the form of time-serial animation.
摘要翻译：对于监视系统中的图像记录/再现，输入的监视图像信号被转换成多个时间序列数字化监视图像帧，以临时存储在第一存储区域中。从存储在第一存储区域中的多个数字化监视图像帧中，提取与至少一种类型的用于监视的相关事件相关的多个监视图像帧以存储在第二存储区域中。一种被监视事件数据库，具有数据结构，该数据结构包括各自包含与第二存储区域中的相关监视图像帧的存储位置有关的信息的元素，以及关于存储在第二存储器中的每个监视图像帧的相关监视图像帧的属性的信息生成区域以存储在第三存储区域中。响应于用户通过使用WEB浏览器发送并通过网络发送的请求请求，搜索所监视的事件数据库，以获取与第二存储区域中的与所述请求请求相关的多个监视图像帧的存储位置，从而从所述第二存储区域与所述请求请求相关的多个监视图像帧。所选择的多个监视图像帧被转换为HTML数据，以被发送到经由网络连接以在二维布局中或以时间 - 串行动画的形式显示在显示设备上的显示设备。

18. 发明授权

US5974219A Control method for detecting change points in motion picture images and for stopping reproduction thereof and control system for monitoring picture images utilizing the same 失效
标题翻译：用于检测运动图像图像中的变化点和停止其再现的控制方法以及利用其监视图像图像的控制系统
公开(公告)号：US5974219A
公开(公告)日：1999-10-26
申请号：US727046
申请日：1996-10-08
申请人： Takehiro Fujita , Takafumi Miyatake , Akio Nagasaka , Katsumi Taniguchi
发明人： Takehiro Fujita , Takafumi Miyatake , Akio Nagasaka , Katsumi Taniguchi
IPC分类号： H04N5/91 , G06F17/30 , G06T13/00 , G06T13/80 , G11B27/034 , G11B27/10 , G11B27/22 , G11B27/28 , G11B27/34 , H04N5/14 , H04N5/93 , H04N9/74
CPC分类号： H04N5/147 , G06F17/30825 , G06F17/3084 , G11B27/034 , G11B27/105 , G11B27/28 , G11B27/34 , G11B2220/20 , G11B2220/90 , G11B27/22
摘要： Only a video cut (containing a frame) designated by a user is automatically and correctly extracted directly from a video image under playing operation at high speed. A judgement is made as to whether or not the frame of the video image is designated by the user. When such a user designation is made, a detection is made of a change point in the video cut containing this designated frame (reverse playing direction, forward playing direction). Under such a condition that a frame image immediately before this change point is displayed, the playing operation of the video image is brought into a pause state. Accordingly, only the video cut desired by the user can be extracted during a single playing operation of the video image, and the video image can be edited in a high efficiency.
摘要翻译：用户指定的视频剪辑（包含帧）只能在高速播放操作下直接从视频图像中直接提取。判断视频图像的帧是否由用户指定。当进行这样的用户指定时，检测包含该指定帧（反向播放方向，向前播放方向）的视频剪辑中的变化点。在显示紧接在该变化点之前的帧图像的条件下，视频图像的播放操作进入暂停状态。因此，可以在视频图像的单次播放操作期间仅提取用户期望的视频剪辑，并且可以高效率地编辑视频图像。

19. 发明申请

US20230068678A1 INFORMATION PROCESSING APPARATUS, MEETING SYSTEM, AND METHOD 有权
公开(公告)号：US20230068678A1
公开(公告)日：2023-03-02
申请号：US17818084
申请日：2022-08-08
申请人： Takehiro Fujita
发明人： Takehiro Fujita
IPC分类号： H04L12/18
摘要： An information processing apparatus, a meeting system, and a method. The information processing apparatus registers material to be distributed to a participant of a meeting, controls an output device to output the material, acquires meeting progress information indicating progress of the meeting and additional information added by the participant to the material, and generates meeting result information that indicates meeting result based on the material, the meeting progress information, and the additional information.

20. 发明授权

US08681420B2 Optical transmission system 失效
标题翻译：光传输系统
公开(公告)号：US08681420B2
公开(公告)日：2014-03-25
申请号：US13169136
申请日：2011-06-27
申请人： Yasushi Sugaya , Takehiro Fujita
发明人： Yasushi Sugaya , Takehiro Fujita
IPC分类号： H04B10/17 , H04J1/00
CPC分类号： H01S3/06762 , H01S3/06766 , H01S3/06775 , H01S2301/06 , H04B10/2572 , H04B10/2941
摘要： An optical transmission system includes an optical transmitter that sends signal light to a transmission path, an optical receiver that receives the signal light from the transmission path, and an optical amplifier that is provided on the transmission path and that amplifies the signal light, the optical amplifier being configured to control a gain characteristic of the optical amplifier such that a power of signal light having a wavelength included within a wavelength range in which polarization hole burning occurs is higher than a power of another signal light having a wavelength outside the wavelength range.
摘要翻译：一种光传输系统包括：向传输路径发送信号光的光发射机;接收来自传输路径的信号光的光接收机;以及设置在传输路径上并放大信号光的光放大器，放大器被配置为控制光放大器的增益特性，使得包含在发生极化孔燃烧的波长范围内的波长的信号光的功率高于具有波长范围外的波长的另一信号光的功率。

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