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公开(公告)号：US20150244454A1
公开(公告)日：2015-08-27
申请号：US14591945
申请日：2015-01-08
Inventor： Geun Yong KIM , Sung Chang KIM , Hark YOO , Hee Do KIM , Dong Soo LEE
IPC: H04B10/032
CPC classification number: H04B10/032 , H04Q11/0067 , H04Q2011/0081
Abstract: A fast protection switching method for a Passive Optical Network (PON). When performing protection switching from an operation link (an operation network) to a protection link (a protection network) in a PON, the fast protection switching method enables rapidly updating Equalization Delay (EqD) values, even if the EqD values are different for Optical Network Terminals (ONTs) of varying distances.
Abstract translation: 一种无源光网络（PON）的快速保护切换方法。 在从PON的操作链路（操作网络）到保护链路（保护网络）进行保护切换时，快速保护切换方法能够快速更新均衡延迟（EqD）值，即使EqD值对于光学 不同距离的网络终端（ONT）。
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公开(公告)号：US20150104174A1
公开(公告)日：2015-04-16
申请号：US14484433
申请日：2014-09-12
Inventor： Geun Yong KIM , Dong Soo LEE , Sung Chang KIM , Hark YOO , Young Suk LEE , Hee Do KIM
IPC: H04Q11/00
CPC classification number: H04Q11/0067 , H04Q2011/0064 , H04Q2011/0079
Abstract: Provided is a method of saving power in a passive optical network (PON) system including an optical line terminal (OLT) and a plurality of optical network units (ONUs), the OLT including an optical transceiver to communicate with at least one ONU through an optical line, and a controller to control the optical transceiver to transmit an upstream bandwidth map to the ONU at a predetermined transmission interval, wherein the transmission interval is determined based on a desired upstream data service delay time.
Abstract translation: 提供一种在包括光线路终端（OLT）和多个光网络单元（ONU）的无源光网络（PON）系统中节省功率的方法，所述OLT包括光收发器，以通过以下方式与至少一个ONU通信： 光线路和控制器，用于控制光收发器以预定的传输间隔向ONU发送上行带宽映射，其中基于期望的上行数据业务延迟时间来确定传输间隔。
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公开(公告)号：US20140059531A1
公开(公告)日：2014-02-27
申请号：US13756954
申请日：2013-02-01
Inventor： Young Suk LEE , Hark YOO , Geun Yong KIM , Mun Seob LEE , Sung Chang KIM , Dong Soo LEE , Young Sun KIM
IPC: G06F9/445
CPC classification number: G06F8/65
Abstract: Disclosed are a method and apparatus for updating a terminal software version. The method includes providing software update start information including window size information and software image storage space information to a plurality of terminals, receiving first response information in accordance with provision of the software update start information from the plurality of terminals, and providing software update information in accordance with the window size information to the plurality of terminals in units of sections.
Abstract translation: 公开了一种用于更新终端软件版本的方法和装置。 该方法包括向多个终端提供包括窗口尺寸信息和软件图像存储空间信息的软件更新开始信息，根据来自多个终端的软件更新开始信息的提供接收第一响应信息，并且提供软件更新信息 根据以各部分为单位的多个终端的窗口大小信息。
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24.发明申请公开(公告)号：US20130188953A1
公开(公告)日：2013-07-25
申请号：US13745112
申请日：2013-01-18
Inventor： Mun Seob LEE , Dong Soo LEE , Hark YOO , Sung Chang KIM , Geun Yong KIM , Young Suk LEE
IPC: H04B10/27
CPC classification number: H04B10/27 , H04B10/272 , H04J3/22 , H04Q11/0067 , H04Q2011/0088
Abstract: An optical network system for controlling a passive optical network (PON) in which at least one symmetric optical subscriber terminal and at least one asymmetric optical subscriber terminal coexist is provided.
Abstract translation: 一种用于控制无源光网络（PON）的光网络系统，其中至少一个对称光用户终端和至少一个非对称光用户终端共存。
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公开(公告)号：US20130188947A1
公开(公告)日：2013-07-25
申请号：US13745144
申请日：2013-01-18
Inventor： Mun Seob LEE , Dong Soo LEE , Geun Yong KIM , Hark YOO , Sung Chang KIM , Young Suk LEE
IPC: H04B10/071
CPC classification number: H04B10/071 , G01M11/3136 , G01M11/3145
Abstract: An apparatus and method for monitoring an optical line is provided. The optical line monitoring apparatus may include a comparison unit to extract first identification information about an optical network terminal (ONT) from reflected data that is reflected and received from the optical line, and to compare the extracted first identification information to predetermined second identification information about the ONT, and a processor to analyze a state of the optical line using the reflected data when the first identification information is identical to the second identification information.
Abstract translation: 提供一种用于监视光线路的装置和方法。 光线路监视装置可以包括比较单元，用于从光线反射和接收的反射数据中提取关于光网络终端（ONT）的第一识别信息，并将所提取的第一识别信息与预定的第二识别信息进行比较 ONT，以及处理器，当第一识别信息与第二识别信息相同时，使用反射数据分析光线路的状态。
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Patent Agency Ranking
公开(公告)号：US20210208535A1
公开(公告)日：2021-07-08
申请号：US16825571
申请日：2020-03-20
Inventor： Gi Hyeon MIN , Keo Sik KIM , Hyun Seo KANG , Kye Eun KIM , Sung Chang KIM , Ji Hyoung RYU , Si Woong PARK , Hyoung Jun PARK , Dong Hoon SON , Chan Il YEO , Dong Soo LEE , Byung Tak LEE , Young Soon HEO
Abstract: Provided are a system and method for digital holographic imaging which are not affected by external vibrations. The system for digital holographic imaging includes a light source and optical system section configured to split generated beams and including a sample through which the beams pass, a lens, and a grating disposed behind the lens; an object signal acquisition section configured to receive the split beams and acquire an interference signal; and an image processor configured to acquire a three-dimensional (3D) image of an object by using the acquired interference signal.
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公开(公告)号：US20190090726A1
公开(公告)日：2019-03-28
申请号：US16041427
申请日：2018-07-20
Inventor： Hyoungjun PARK , Ji Hyoung RYU , Keo-Sik KIM , Hyun Seo KANG , Kyeeun KIM , Sung Chang KIM , Gi Hyeon MIN , Si Woong PARK , Dong Hoon SON , CHAN IL YEO , Dongsoo LEE , Young Soon HEO
Abstract: Disclosed is an optical device. The optical device includes: a first WDM filter for dividing an optical signal transmitted through and reflected from a measured subject into an optical signal of an infrared band and a first optical signal through wavelength division multiplexing; a first LC tunable wavelength filter disposed at an output end of the first WDM filter, and selectively filtering the optical signal of the infrared band; a second WDM filter for dividing the first optical signal into an optical signal of a first visible light band and a second optical signal through wavelength division multiplexing; and a second LC tunable wavelength filter disposed at an output end of the second WDM filter, and selectively filtering the optical signal of the first visible light band.
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公开(公告)号：US20180299621A1
公开(公告)日：2018-10-18
申请号：US15824576
申请日：2017-11-28
Inventor： CHAN IL YEO , Young Soon HEO , Hyun Seo KANG , Sung Chang KIM
IPC: G02B6/28 , H04B10/079 , H01S3/067 , H04B10/2587 , H04J14/02 , G02B6/42
Abstract: The present invention relates to an optical combiner and a manufacturing method thereof, and a plurality of light source units emitting an optical signal. A reflection unit having a plurality of reflection surfaces disposed on a path of the optical signal and reflecting the optical signal so as to face toward an optical fiber, and an optical fiber holder fixing the optical fiber at a position where the optical signal reflected by the plurality of reflection surfaces is focused is included. An optical combiner and a manufacturing method thereof in which an optical fiber holder includes a plurality of division members that are radially disposed with respect to a center part of the reflection unit are disclosed.
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公开(公告)号：US20180252579A1
公开(公告)日：2018-09-06
申请号：US15825303
申请日：2017-11-29
Inventor： Hyun Seo KANG , Jeong Eun KIM , Jaisang KOH , Keo-Sik KIM , Sung Chang KIM , Hee Seung KIM , Ji Hyoung RYU , Hyoungjun PARK , Dong Hoon SON , CHAN IL YEO , Young Soon HEO
CPC classification number: G01J3/0227 , G01J3/10 , G01J2003/102 , G09G3/2003
Abstract: An integrated optical measurement apparatus includes: an optical signal transmission unit varying a wavelength of an optical signal to be transmitted and controlling power of the optical signal such that the wavelength is varied to be output to the outside; an optical signal receiving unit measuring power and a wavelength from the optical signal input from the outside; and a controller controlling the optical signal transmission unit and the optical signal receiving unit.
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公开(公告)号：US20180088378A1
公开(公告)日：2018-03-29
申请号：US15499392
申请日：2017-04-27
Inventor： Hyoung Jun PARK , Hyun Seo KANG , Keo Sik KIM , Sung Chang KIM , Young Sun KIM , Jeong Eun KIM , Hee Seung KIM , Ji Hyoung RYU , Dong Hoon SON , Chan Il YEO , Young Soon HEO
IPC: G02F1/1347 , G02F1/13363 , G02F1/135 , G02F1/1335 , G01J4/00
CPC classification number: G02F1/13473 , G02F1/0136 , G02F2001/0142 , G02F2201/58
Abstract: Disclosed is a polarimetric-analysis-type dual liquid crystal (LC) wavelength filter module capable of miniaturization or optical integration in the form of a package. The polarimetric-analysis-type dual liquid crystal (LC) wavelength filter module includes a beam displacer disposed on a propagation path of light of an unpolarized light source for emitting unpolarized light and configured to generate two orthogonal polarization components corresponding to two polarization axes from the light of the unpolarized light source such that the polarization components are separated at a predetermined angle, a half-wavelength retarder disposed apart at a rear end of the beam displacer along the light propagation path, and a dual LC wavelength-tunable filter having two LC wavelength-tunable filters that overlap with a gap therebetween to detect light intensities of first polarized light of a Transverse Electric (TE) mode that is directly delivered from the beam displacer and second polarized light of the TE mode that is transmitted through or via the half-wavelength retarder and then converted.
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