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1. 发明授权

US11148891B2 Sheet conveying device and image forming apparatus incorporating the sheet conveying device 有权
公开(公告)号：US11148891B2
公开(公告)日：2021-10-19
申请号：US16140949
申请日：2018-09-25
申请人： Daisuke Arai , Takehiro Fujita
发明人： Daisuke Arai , Takehiro Fujita
IPC分类号： B65H5/06 , B65H7/02 , B65H9/00 , B65H9/10 , B65H7/14
摘要： A sheet conveying device, which is included in an image forming apparatus, includes a pair of rotary bodies configured to convey a sheet and correct a positional deviation of the sheet, a pair of downstream side sheet conveying bodies disposed downstream from the pair of rotary bodies in a sheet conveying direction and configured to convey the sheet, and a detector configured to detect separation of the pair of rotary bodies. The pair of rotary bodies moves the sheet by moving from a home position on a sheet conveyance passage through which the sheet passes. The pair of rotary bodies moves to the home position while the pair of downstream side sheet conveying bodies is conveying the sheet, in response to detection of the separation of the pair of rotary bodies by the detector.

2. 发明授权

US10513408B2 Sheet conveying device and image forming apparatus incorporating the sheet conveying device 有权
公开(公告)号：US10513408B2
公开(公告)日：2019-12-24
申请号：US16001009
申请日：2018-06-06
申请人： Shogo Nakamura , Takehiro Fujita , Tomoki Shimohira
发明人： Shogo Nakamura , Takehiro Fujita , Tomoki Shimohira
IPC分类号： B65H9/00 , B65H7/14 , B65H5/06 , B65H7/08 , B65H7/10 , B65H9/20
摘要： A sheet conveying device, which is included in an image forming apparatus, includes a pair of rollers configured to convey a sheet in a sheet conveyance passage, a detector configured to optically detect an attitude of the sheet, one of a rotation device to rotate the pair of rollers in a direction parallel to a plane of the sheet and a moving device to move the pair of rollers in a width direction, and a controller configured to correct the attitude of the pair of rollers at a time interval, based on a detection result obtained by the detector. The controller performs the correcting operation by setting, according to reflectance of the sheet, at least one of a light emission time of the detector, the time interval of the correcting operation, light emission intensity of the detector and a conveying speed of the sheet.

3. 发明授权

US10479638B2 Printing system 有权
公开(公告)号：US10479638B2
公开(公告)日：2019-11-19
申请号：US15516824
申请日：2015-10-14
申请人： Takehiro Fujita
发明人： Takehiro Fujita
IPC分类号： B65H37/04 , B42C1/12 , G03G15/00 , B42B5/10 , B41J2/175 , B41J13/00 , G03G21/02 , G03G21/14
摘要： A series of conveyance paths to convey a recording medium is formed across a printer and a post-processing device in a printing system. The printing system includes: a detection unit that detects that the post-processing device has entered a predetermined state; and a paper feeding control unit that limits the number of recording media fed to the conveyance path, when it is not detected that the post-processing device has entered the predetermined state, based on the number of recording media conveyable to the post-processing device after the post-processing device enters the predetermined state.

4. 发明授权

US08891958B2 Transmission quality determination method, transmission path selection method and network management system 有权
标题翻译：传输质量确定方法，传输路径选择方法和网络管理系统
公开(公告)号：US08891958B2
公开(公告)日：2014-11-18
申请号：US13396940
申请日：2012-02-15
申请人： Takehiro Fujita , Shigeru Ishii , Takuya Miyashita
发明人： Takehiro Fujita , Shigeru Ishii , Takuya Miyashita
IPC分类号： H04B10/08 , H04J14/02 , H04B10/079
CPC分类号： H04B10/0793 , H04B10/0795 , H04J14/0227 , H04J14/0267 , H04J14/0271 , H04J14/0278 , H04Q2213/1301 , H04Q2213/13345
摘要： There is provided a method of determining transmission quality of a path in an optical communication network system obtained by connecting a plurality of networks, the method including: acquiring a value representing transmission performance corresponding to a network condition of each of spans in the path in the optical communication network system; and determining the transmission quality of the path on the basis of the acquired value representing transmission performance corresponding to the network condition of each of spans.
摘要翻译：提供了一种确定通过连接多个网络获得的光通信网络系统中的路径的传输质量的方法，所述方法包括：获取表示与所述路径中的每个跨度的网络状况相对应的传输性能的值光通信网络系统; 并且基于所获取的表示与每个跨度的网络条件相对应的传输性能的值来确定路径的传输质量。

5. 发明授权

US08693874B2 Transmission system and method of correcting tilt of the transmission system 失效
标题翻译：传输系统和传输系统倾斜校正方法
公开(公告)号：US08693874B2
公开(公告)日：2014-04-08
申请号：US12766271
申请日：2010-04-23
申请人： Tomoyuki Suzuki , Kenji Watanabe , Koji Tanonaka , Akihisa Kawaguchi , Takehiro Fujita
发明人： Tomoyuki Suzuki , Kenji Watanabe , Koji Tanonaka , Akihisa Kawaguchi , Takehiro Fujita
IPC分类号： H04J14/02 , H04B10/00 , G02B6/26 , G02B6/28
CPC分类号： H04B10/672 , H04B10/2942 , H04J14/0221
摘要： A transmission system is provided with a transmission apparatus that outputs an ASE light from a transmission light amplifier and with a reception apparatus provided with: a tilt detection unit that detects the optical strength levels of at least two probe lights having different wavelengths from a received ASE light; and a reception light amplifier that performs a first-order tilt correction on light to be output in a linear manner so as to reduce the difference in the optical strength level of the two probe lights detected by the tilt detection unit.
摘要翻译：一种传输系统，具有从发送光放大器输出ASE光的发送装置，以及配置有接收装置的接收装置，所述接收装置具备：倾斜检测部，其从接收到的ASE检测出与波长不同的至少两个探测光的光强度水平光; 以及接收光放大器，其对以线性方式输出的光进行一级倾斜校正，以便减少由倾斜检测单元检测到的两个探测光的光强度水平差。

6. 发明授权

US08682167B2 Optical transmission device 失效
标题翻译：光传输装置
公开(公告)号：US08682167B2
公开(公告)日：2014-03-25
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。

7. 发明申请

US20100295839A1 Image Display Device 审中-公开
标题翻译：图像显示设备
公开(公告)号：US20100295839A1
公开(公告)日：2010-11-25
申请号：US12782421
申请日：2010-05-18
申请人： Shigeki Nagaya , Tomoaki Yoshinaga , Takehiro Fujita , Hiroaki Ito , Katsuyuki Watanabe , Hidekazu Takeda , Maki Furui
发明人： Shigeki Nagaya , Tomoaki Yoshinaga , Takehiro Fujita , Hiroaki Ito , Katsuyuki Watanabe , Hidekazu Takeda , Maki Furui
IPC分类号： G06F3/038 , G06T7/00
CPC分类号： G09G5/00 , G06F1/3265 , G06F3/011 , G09G3/3406 , G09G3/3426 , G09G2320/0626 , G09G2320/0686 , G09G2330/021 , G09G2330/022 , G09G2340/02 , G09G2354/00 , H04N5/57 , H04N5/63 , H04N21/42201 , H04N21/4223 , H04N21/44218 , H04N21/4436 , H04N21/488 , H04N21/6582 , Y02D10/153 , Y02D50/20
摘要： Disclosed is an image display device that provides power consumption reduction control in an improved manner. The image display device includes an input that inputs a video signal, an output controller that reproduces the video signal entered into the input, a display that displays an image in accordance with the video signal reproduced by the output controller, an imager that picks up an image of a user of the image display device, an attentiveness decider that analyzes the image picked up by the imager and judges whether the user is watching a display screen of the display, and a controller that selects either a normal mode or a power saving mode as a processing mode for light intensity control of a light source of the display or for reproduction in the output controller in accordance with the result of decision made by the attentiveness decider.
摘要翻译：公开了一种以改进的方式提供功耗降低控制的图像显示装置。图像显示装置包括输入视频信号的输入端，再现输入到输入端的视频信号的输出控制器，根据由输出控制器再现的视频信号显示图像的显示器，图像显示装置的用户的图像，分析由成像器拾取的图像并判断用户正在观看显示器的显示屏幕的注意力判定器，以及选择正常模式或省电模式的控制器作为用于显示器的光源的光强度控制或输出控制器中的再现的处理模式，根据注意判定器的判定结果。

8. 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。

9. 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。

10. 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。

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