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41. 发明授权

US07619813B2 Wavelength division multiplexing device, an optical leakage prevention method, and a wavelength division multiplexing communication system 有权
标题翻译：波分复用装置，防漏漏方法和波分复用通信系统
公开(公告)号：US07619813B2
公开(公告)日：2009-11-17
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： H04B10/17 , H04B10/12
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”.
摘要翻译：公开了一种波分复用（WDM）设备，防漏漏方法和WDM通信系统。 WDM装置包括：电平调整单元，用于接收光信号，用于调整接收到的光信号的光功率电平，并输出电平调整的光信号; 以及控制单元，用于分析从电平调整单元输出的光信号的光功率电平，用于控制电平调整单元，使得输出光信号的光功率电平保持在恒定电平，并转换到“ 当输出光信号的光功率电平变得小于预定的断开检测阈值时，电平调节单元给输入光信号预定的衰减。当输出光信号的光功率电平大于预定恢复阈值并且上游WDM设备不处于“关闭状态”时，控制单元从“截止状态”转变。

42. 发明申请

US20090226167A1 METHOD OF UPGRADING OPTICAL NODE, AND AN OPTICAL NODE APPARATUS 有权
标题翻译：光学节点放大方法和光学节点装置
公开(公告)号：US20090226167A1
公开(公告)日：2009-09-10
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： H04J14/00
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。

43. 发明授权

US07489876B2 Optical transmission system having noise-elimination function 有权
标题翻译：具有消噪功能的光传输系统
公开(公告)号：US07489876B2
公开(公告)日：2009-02-10
申请号：US10901984
申请日：2004-07-30
申请人： Takehiro Fujita , Motoyoshi Sekiya , Hidezumi Natori
发明人： Takehiro Fujita , Motoyoshi Sekiya , Hidezumi Natori
IPC分类号： H04B10/02
CPC分类号： H04J14/0279 , H01S3/0078 , H01S3/06758 , H01S3/10015 , H01S2301/02 , H04B10/291 , H04J14/0221 , H04J14/0256 , H04J14/0275
摘要： The present invention is aimed at providing a low-cost optical transmission system of simple configuration, capable of achieving a satisfactory OSNR even in the time of transmission of a small number of wavelengths. To this end, the optical transmission system is provided with a noise elimination unit corresponding to each of optical amplifiers arranged on a transmission path. This noise elimination unit includes a transmission characteristic capable of selectively transmitting a light in a wavelength band in which a signal light exists through an amplification band of the optical amplifier, and includes a function of automatically eliminating a noise light in a wavelength band in which a signal light does not exist, of noise lights generated in the optical amplifiers.
摘要翻译：本发明旨在提供一种简单配置的低成本光传输系统，即使在少量波长的传输时也能实现令人满意的OSNR。为此，光传输系统设置有与布置在传输路径上的每个光放大器相对应的噪声消除单元。该噪声消除单元包括能够通过光放大器的放大带选择性地发送存在信号光的波长带中的光的透射特性，并且具有自动消除波长带中的噪声光的功能，其中，信号灯不存在，在光放大器中产生的噪声光。

44. 发明申请

US20090009660A1 VIDEO DISPLAYING APPARATUS, VIDEO SIGNAL PROCESSING APPARATUS AND VIDEO SIGNAL PROCESSING METHOD 审中-公开
标题翻译：视频显示设备，视频信号处理设备和视频信号处理方法
公开(公告)号：US20090009660A1
公开(公告)日：2009-01-08
申请号：US12167713
申请日：2008-07-03
申请人： Masahiro KAGEYAMA , Koichi Hamada , Shigeki Nagaya , Takehiro Fujita
发明人： Masahiro KAGEYAMA , Koichi Hamada , Shigeki Nagaya , Takehiro Fujita
IPC分类号： H04N7/01 , H04N5/66
CPC分类号： H04N7/012 , G06T3/4084 , H04N7/0125 , H04N7/0132
摘要： The present invention provides a technology for achieving high resolution of video signals, preferably, with a small number of frames of a video signal or a motion picture.The video signal processing apparatus comprises an input unit, into which a plural number of video frames, and a resolution converter unit, having characteristics for resolution conversion differing depending on the direction, in which an object to be photographed moves on that input video frame, by composing the plural number of video frames inputted, and for obtaining an output video frame by increasing a number of pixels building up the video frame, whereby obtaining high-resolution video with using an output result of that resolution converter unit.
摘要翻译：本发明提供一种用于实现视频信号的高分辨率的技术，优选地，具有少量的视频信号或运动图像的帧。视频信号处理装置包括具有多个视频帧的输入单元和分辨率转换单元，分辨率转换单元具有根据该拍摄对象在该输入视频帧上移动的方向而不同的方向，通过组合输入的多个视频帧，并且通过增加构成视频帧的像素的数量来获得输出视频帧，从而使用该分辨率转换器单元的输出结果来获得高分辨率视频。

45. 发明申请

US20080002978A1 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：US20080002978A1
公开(公告)日：2008-01-03
申请号：US11319376
申请日：2005-12-29
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： H04B10/16
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。

46. 发明申请

US20060269284A1 Optical transmission apparatus, continuity testing method therein, and optical transmission system 失效
公开(公告)号：US20060269284A1
公开(公告)日：2006-11-30
申请号：US11209625
申请日：2005-08-24
申请人： Takehiro Fujita
发明人： Takehiro Fujita
IPC分类号： H04B10/08
CPC分类号： H04B10/296 , H04B10/077 , H04B10/07955 , H04B2210/258
摘要： An optical transmission apparatus comprises a preamplifier controlling unit for controlling a preamplifier so that amplified spontaneous emission including all wavelength bands of a wavelength-multiplexed signal beam is outputted toward a wavelength demultiplexing unit, with the wavelength-multiplexed signal beam not inputted, power monitors for monitoring optical powers of the amplified spontaneous emission fed from the preamplifier and wavelength-demultiplexed by the wavelength demultiplexing unit, and a determining unit for determining the continuity state of an optical propagation path of each wavelength component on the basis of a result of monitoring by the power monitors. The optical transmission apparatus allows the continuity test on optical propagation paths of channels including a channel not used at the time of a start of the operation to be made easier than the known techniques.

47. 发明申请

US20050201754A1 Optical transmission system having noise-elimination function 有权
标题翻译：具有消噪功能的光传输系统
公开(公告)号：US20050201754A1
公开(公告)日：2005-09-15
申请号：US10901984
申请日：2004-07-30
申请人： Takehiro Fujita , Motoyoshi Sekiya , Hidezumi Natori
发明人： Takehiro Fujita , Motoyoshi Sekiya , Hidezumi Natori
IPC分类号： H01S3/10 , H01S3/06 , H01S3/067 , H04B10/07 , H04B10/2507 , H04B10/29 , H04B10/294 , H04J14/00 , H04J14/02
CPC分类号： H04J14/0279 , H01S3/0078 , H01S3/06758 , H01S3/10015 , H01S2301/02 , H04B10/291 , H04J14/0221 , H04J14/0256 , H04J14/0275
摘要： The present invention is aimed at providing a low-cost optical transmission system of simple configuration, capable of achieving a satisfactory OSNR even in the time of transmission of a small number of wavelengths. To this end, the optical transmission system is provided with a noise elimination unit corresponding to each of optical amplifiers arranged on a transmission path. This noise elimination unit includes a transmission characteristic capable of selectively transmitting a light in a wavelength band in which a signal light exists through an amplification band of the optical amplifier, and includes a function of automatically eliminating a noise light in a wavelength band in which a signal light does not exist, of noise lights generated in the optical amplifiers.
摘要翻译：本发明旨在提供一种简单配置的低成本光传输系统，即使在少量波长的传输时也能实现令人满意的OSNR。为此，光传输系统设置有与布置在传输路径上的每个光放大器相对应的噪声消除单元。该噪声消除单元包括能够通过光放大器的放大带选择性地发送存在信号光的波长带中的光的透射特性，并且具有自动消除波长带中的噪声光的功能，其中，信号灯不存在，在光放大器中产生的噪声光。

48. 发明授权

US06798909B2 Surveillance apparatus and recording medium recorded surveillance program 失效
公开(公告)号：US06798909B2
公开(公告)日：2004-09-28
申请号：US09859509
申请日：2001-05-18
申请人： Takafumi Miyatake , Shigeki Nagaya , Akio Nagasaka , Takehiro Fujita
发明人： Takafumi Miyatake , Shigeki Nagaya , Akio Nagasaka , Takehiro Fujita
IPC分类号： G06K946
CPC分类号： G08B13/19602 , G06K9/3241 , G06T7/254 , G08B13/19604 , G08B13/19606 , G08B13/19671 , G08B13/19676 , G08B13/1968 , G08B13/19682 , G08B13/19691
摘要： An economical surveillance apparatus robust to an environmental change includes an input unit for inputting images in a time series, a background image memory unit for storing a plurality of input images, a difference image memory unit for calculating and storing difference degree between a plurality of background images of the background image memory unit and an image inputted afresh, and a judging unit for judging an existence/absence of an invading object by utilizing the value of the difference degree of the difference image memory unit. This surveillance apparatus can automatically register a plurality of background images from a camera image. Since the background images that are no longer used are automatically erased, the drop of detection speed and detection sensitivity can be prevented.

49. 发明授权

US6023520A Method and apparatus for detecting and displaying a representative image of a shot of short duration in a moving image 失效
公开(公告)号：US6023520A
公开(公告)日：2000-02-08
申请号：US676478
申请日：1996-07-08
申请人： Akio Nagasaka , Takafumi Miyatake , Takehiro Fujita , Katsumi Taniguchi , Kazuaki Tanaka
发明人： Akio Nagasaka , Takafumi Miyatake , Takehiro Fujita , Katsumi Taniguchi , Kazuaki Tanaka
IPC分类号： G11B27/11 , G11B27/28 , G11B27/34 , H04N5/14 , H04N21/478 , G06K9/00
CPC分类号： H04N5/147 , G11B27/11 , G11B27/28 , G11B27/34 , H04N21/478
摘要： A method and apparatus for displaying a representative image corresponding to a shot of a duration within a specified range included in a plurality of shots of a moving image. The moving image includes a plurality of successive frames each having an image and each shot includes a plurality of the successive frames. In the invention a plurality of shot change points are sequentially detected from the moving image. The shot change points represent points between a pair of frames where images of a preceding shot and images of a succeeding shot have changed. Thereafter a detection is performed to determine whether a duration of a shot between a preceding shot change point and a succeeding shot change point is within the specified range. A representative image corresponding to the shot having a duration within the specified range is displayed along with duration time information representing the duration of the shot. A reduced image from the shot can be displayed as the representative image and the number of detected shots having a duration within the specified range can be reduced according to preset conditions.

50. 发明授权

US5862508A Moving object detection apparatus 失效
公开(公告)号：US5862508A
公开(公告)日：1999-01-19
申请号：US23467
申请日：1998-02-13
申请人： Shigeki Nagaya , Takafumi Miyatake , Takehiro Fujita
发明人： Shigeki Nagaya , Takafumi Miyatake , Takehiro Fujita
IPC分类号： G08B21/00 , F41G7/22 , G06K9/00 , G06T7/20 , G08B13/194 , G08G1/04 , H04N17/00
CPC分类号： G06K9/00785 , F41G7/2226 , F41G7/2253 , F41G7/2293 , G06K9/00624 , G06K9/50 , G06T7/20 , G08B13/19602 , G08B13/19604 , G08B13/19691 , G08G1/04
摘要： A moving object is detected from a movie. The actual movie has a complicated background. In order to detect the moving object, the invention is constructed to comprise, in addition to means 500 for inputting the movie, and display 300 for outputting the processed result: means 700 for judging the interval which is predicted to belong to the background as to a pixel region in the movie; means 800 for extracting the moving object; and means 900 for calculating the moving direction and velocity of the moving object.Thanks to the above-specified construction, even under the complicated background in which not only the change in the illumination condition but also the structure change will occur, the presence of the structure change of the background can be judged to detect/extract the moving object on real time. Moreover, the moving direction and velocity of the moving object can also be calculated.

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