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公开(公告)号：US09755736B2
公开(公告)日：2017-09-05
申请号：US15070778
申请日：2016-03-15
Inventor： Jae In Kim , Sung Chang Kim , Geun Yong Kim , Dongsoo Lee
IPC: H04B10/073 , H04J14/02 , H04B10/077 , H04B10/071
CPC classification number: H04B10/0775 , H04B10/071
Abstract: Disclosed is a smart remote node optical network node including an optical layer monitoring unit configured to transmit a monitoring light signal to an optical network unit through an optical switch and receive a monitoring light signal reflected from the optical network unit, an infra recognition unit configured to recognize whether an optical connector is connected to an output port of a remote node and an identification number of the optical connector when the optical connector is connected thereto, and a control unit connected to the optical layer monitoring unit and the infra recognition unit and configured to control recognition and monitoring operations of the remote node according to a remote node application.
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公开(公告)号：US10648860B2
公开(公告)日：2020-05-12
申请号：US15870012
申请日：2018-01-12
Inventor： Hyun Seo Kang , Kyeeun Kim , Keo-Sik Kim , Sung Chang Kim , Ji Hyoung Ryu , Gi Hyeon Min , Si Woong Park , Hyoungjun Park , Dong Hoon Son , Chan Il Yeo , Dongsoo Lee , Young Soon Heo
Abstract: Disclosed is a spectroscopic device including a planar lightwave circuit to which light passing through an optical fiber is input, a wavelength divider configured to divide a wavelength of light passing through the planar lightwave circuit, a beam splitter configured to divide a traveling direction of light passing through the wavelength divider into an external sample inlet and an internal sample inlet and adjust power of the divided light, a charge-coupled device (CCD) image sensor configured to covert light transmitted from the internal sample inlet to an electrical signal or convert light reflected by the external sample inlet to an electrical signal, a control and signal processor configured to process the electrical signal to indicate a light intensity based on each wavelength, and an input and output interface configured to perform a spectrum analysis for each wavelength using the processed electrical signal.
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公开(公告)号：US10205524B2
公开(公告)日：2019-02-12
申请号：US15461214
申请日：2017-03-16
Inventor： Geun Yong Kim , Hark Yoo , Sung Chang Kim , Dongsoo Lee
IPC: H04B10/27 , H04J14/02 , H04B10/079
Abstract: A method and an apparatus for setting a quiet window in a passive optical network system are provided. A first response time from a time after an optical line terminal (OLT) transmits a serial number request up to a time in which the OLT receives a first response signal to the serial number request is measured, and a second response time up to a time in which the OLT receives a final response signal to the serial number request is measured. In addition, distance information of an optical network unit (ONU) including the first response time and the second response time is acquired.
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公开(公告)号：US09825710B2
公开(公告)日：2017-11-21
申请号：US15392334
申请日：2016-12-28
Inventor： Hark Yoo , Dong Soo Lee , Geun Yong Kim , Sung Chang Kim , Hee Do Kim , Jae In Kim
IPC: H04B10/08 , H04B10/564 , H04B10/079 , H04J14/08 , H04J14/02
CPC classification number: H04B10/564 , H04B10/07953 , H04B10/07955 , H04J14/0221 , H04J14/0267 , H04J14/0282 , H04J14/08
Abstract: Disclosed are a method and system for determining and controlling power of an optical transmitter of an optical network unit (ONU) for a time and wavelength division multiplexing passive optical network (TWDM-PON). The system includes an RSSI collector configured to collect received signal strength indication (RSSI) information from upstream optical signals received from the ONUs connected to optical line terminal (OLT) ports, an ONU power level determiner configured to gather the pieces of RSSI information about the ONUs from the RSSI collector, and to determine power of optical transmitters of the ONUs based on the gathered information, and a power mode controller configured to receive power mode setting information of the optical transmitters of the ONUs from the ONU power level determiner, and to generate a physical layer operation and maintenance (PLOAM) message to control power modes of the ONUs based on the received power mode setting information.
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5.发明授权Optical line terminal of passive optical network, and method for controlling upstream band using the same 有权无源光网络的光线路终端，以及用于控制上行带的方法公开(公告)号：US09088382B2
公开(公告)日：2015-07-21
申请号：US13872612
申请日：2013-04-29
Inventor： Hark Yoo , Youngsuk Lee , Geun Yong Kim , Sung Chang Kim , Dongsoo Lee
CPC classification number: H04J14/0227 , H04J14/08 , H04Q3/0066 , H04Q11/0067 , H04Q2011/0083 , H04Q2011/0086 , H04Q2213/13332
Abstract: Disclosed are an apparatus and a method capable of adjusting an upstream band for a corresponding ONU by detecting a quantity of bands occupied by a packet, not an effective user packet, among upstream transmission bands for each target object of allocation of each band in the OLT to examine whether a queue report is normal, and detecting an ONU, which transmits an abnormal queue report, according to the examination. An OLT of a PON according to an exemplary embodiment of the present disclosure includes: a frame monitoring unit configured to monitor upstream frame data received for each T-CONT; an error detection unit configured to determine whether a queue report error is generated for each T-CONT according to a result of the monitoring; and a band allocation controller configured to allocate an upstream band for an ONU, in which the queue report error is generated, separately from a normal ONU.
Abstract translation: 公开了一种能够通过在OLT的每个频带的每个目标对象的分配的上行传输频带中检测分组而不是有效用户分组占用的频带的数量来调整相应ONU的上行频带的装置和方法 检查队列报告是否正常，根据检查检测发送异常队列报告的ONU。 根据本公开的示例性实施例的PON的OLT包括：帧监视单元，被配置为监视针对每个T-CONT接收的上行帧数据; 错误检测单元，被配置为根据监视结果确定是否为每个T-CONT生成队列报告错误; 以及频带分配控制器，被配置为与正常ONU分开地分配其中生成队列报告错误的ONU的上行频带。
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Patent Agency Ranking
6.发明申请OPTICAL LINE TERMINAL AND OPTICAL NETWORK UNIT FOR SUPPORTING SLEEP MODE THEREOF 有权用于支持睡眠模式的光线终端和光网络单元公开(公告)号：US20140133843A1
公开(公告)日：2014-05-15
申请号：US13798298
申请日：2013-03-13
Inventor： Geun Yong KIM , Sung Chang Kim , Hark Yoo , Youngsuk Lee , Dongsoo Lee , Young Sun Kim
IPC: H04B10/564
CPC classification number: H04B10/564 , H04B10/272
Abstract: An optical line terminal is provided which includes an upward band allocating unit configured to send an upward bandwidth allocation map to an optical network unit and to determine a sleep mode of the optical network unit according to whether a response message corresponding to the upward bandwidth allocation map is received; and an alarm unit configured to determine an upward bandwidth allocation map transfer operation as a normal operation according to an operation of the sleep mode.
Abstract translation: 提供了一种光线路终端，其包括向上频带分配单元，被配置为向光网络单元发送向上带宽分配映射，并且根据对应于向上带宽分配映射的响应消息来确定光网络单元的睡眠模式 被收到 以及警报单元，被配置为根据睡眠模式的操作来确定向上带宽分配映射传送操作为正常操作。
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7.发明授权公开(公告)号：US11454770B2
公开(公告)日：2022-09-27
申请号：US17002391
申请日：2020-08-25
Inventor： Young Soon Heo , Sung Chang Kim , Hyun Seo Kang , Chan Il Yeo , Ji Hyoung Ryu , Si Woong Park , Kye Eun Kim , Keo Sik Kim , Jeong Eun Kim , Gi Hyeon Min , Hyoung Jun Park , Dong Hoon Son , Mun Seob Lee
IPC: G02B6/42 , H04B10/112 , H04B10/58 , H04B10/66
Abstract: Provided are an apparatus and method for adjusting an optical axis. In the apparatus, an iris diaphragm and a quadrant photodiode (QPD) are used to align optical axes of an optical system of the apparatus so that optical transmission efficiency between an optical transmitter and an optical receiver can be increased. Since a hole of the iris diaphragm can be adjusted to be small, a beam larger than a light-receiving area of the QPD can be included in the light-receiving area, and optical axis alignment is facilitated accordingly. When the QPD and the iris diaphragm are applied to the apparatus, it is possible to simultaneously perform data transmission, tracking, and optical axis alignment. An optical fiber end surface and optical axes of lenses arranged in parallel are aligned in the apparatus so that alignment between two terminals can be easy and reception efficiency can be increased.
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公开(公告)号：US10884186B2
公开(公告)日：2021-01-05
申请号：US16741151
申请日：2020-01-13
Inventor： Hyun Jin Kim , Hyoung Jun Park , Sung Chang Kim , Kye Eun Kim , Ji Hyoung Ryu , Gi Hyeon Min , Si Woong Park , Dong Hoon Son , Chan Il Yeo
Abstract: A multi-channel receiver optical sub assembly module for a fiber Bragg grating sensor according to an embodiment of the present invention includes a housing, a connection socket, an optical bench, a thermoelectric cooler, an arrayed waveguide grating chip, a photodiode array disposed on the optical bench and including a plurality of photodiode chips connected to the optical channels of the arrayed waveguide grating chip, and a printed circuit board which is connected to the other side of the housing while passing through the other side of the housing, of which a portion of a body is disposed on the optical bench, and which is connected to the photodiode array.
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公开(公告)号：US10591714B2
公开(公告)日：2020-03-17
申请号：US15610010
申请日：2017-05-31
Inventor： Keo Sik Kim , Hyun Seo Kang , Sung Chang Kim , Young Sun Kim , Jeong Eun Kim , Hee Seung Kim , Ji Hyoung Ryu , Hyoung Jun Park , Dong Hoon Son , Chan Il Yeo , Young Soon Heo
Abstract: Provided is an endoscopic apparatus for thermal distribution monitoring, and more particularly, an endoscopic apparatus for thermal distribution monitoring that is capable of providing a functional image in which various images such as a real image and a thermal image, are matched to one another. The endoscopic apparatus includes: an image collecting unit including a thermal image collecting unit collecting a thermal image from an image signal of an object and a real image collecting unit collecting a real image from the image signal of the object; a controller transmitting a control signal to the image collecting unit so as to transmit the image signal to one of the thermal image collecting unit and the real image collecting unit according to a preset period; and a display displaying the collected thermal image and real image.
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公开(公告)号：US09609403B2
公开(公告)日：2017-03-28
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: H04J14/02 , H04J3/16 , H04B10/564 , 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.
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