公开(公告)号：US20100020796A1

公开(公告)日：2010-01-28

申请号：US12516229

申请日：2007-10-31

申请人： Heuk Park ,  Jong-Tae Song ,  Kyung-Gyu Jeon ,  Soon-Seok Lee

发明人： Heuk Park ,  Jong-Tae Song ,  Kyung-Gyu Jeon ,  Soon-Seok Lee

IPC分类号： H04L12/56

CPC分类号： H04L63/1441 ,  H04L63/1466

摘要： Provided are a method and apparatus for blocking forged multicast packets. The apparatus includes input and output ports connected to user terminals; a forwarding process unit transferring a frame input through one of the input ports to one of the output ports connected to a user terminal having a destination address; a determination unit determining an address of a user terminal connected to one of the input ports from a source address included in the frame; a filtering database storing information on the output port connected to the user terminal having the destination address of the frame based on information received from the determination unit; a multicast gate information unit including information on multicast media access control (MAC) addresses of frames providing a monodirectional multicast service and blocking or forwarding all frames having a corresponding multicast MAC address as the destination address by checking whether the input and output ports are connected to an Internet group management protocol (IGMP) querier or not; and a port information transference unit learning the multicast MAC address of the IGMP querier connected to the apparatus, obtaining information on a port having the multicast MAC address as the destination address from the filtering database, and transferring the information to the multicast gate information unit. According to the present application, forged traffic is blocked from being multicasted and thus restricted resources of a network are prevented from being wasted. As a result, the network may be used more efficiently in an industrial field.

摘要翻译： 提供了一种用于阻止伪造的组播数据包的方法和装置。 该装置包括连接到用户终端的输入和输出端口; 转发处理单元，将通过所述输入端口之一输入的帧传送到连接到具有目的地地址的用户终端的输出端口之一; 确定单元，从包括在所述帧中的源地址确定连接到所述输入端口之一的用户终端的地址; 过滤数据库，其基于从所述确定单元接收的信息，存储关于连接到具有所述帧的目的地地址的用户终端的输出端口的信息; 组播门信息单元，其包括提供单向多播服务的帧的组播媒体访问控制（MAC）地址的信息，并且通过检查输入和输出端口是否连接到所述具有相应多播MAC地址的所有帧作为目的地地址来阻止或转发 一个互联网组管理协议（IGMP）查询器; 以及端口信息转发单元，用于学习与该装置连接的IGMP查询器的组播MAC地址，从过滤数据库获取具有组播MAC地址的端口作为目的地地址的信息，并将该信息传送给组播门信息单元。 根据本申请，伪造的业务被阻止被多播，从而防止网络的资源被浪费。 结果，可以在工业领域中更有效地使用网络。

公开(公告)号：US08270406B2

公开(公告)日：2012-09-18

申请号：US12516229

申请日：2007-10-31

申请人： Heuk Park ,  Jong-Tae Song ,  Kyung-Gyu Jeon ,  Soon-Seok Lee

发明人： Heuk Park ,  Jong-Tae Song ,  Kyung-Gyu Jeon ,  Soon-Seok Lee

IPC分类号： H04L12/28

CPC分类号： H04L63/1441 ,  H04L63/1466

摘要： Provided are a method and apparatus for blocking forged multicast packets. The apparatus includes input and output ports connected to user terminals; a forwarding process unit transferring a frame input through one of the input ports to one of the output ports connected to a user terminal having a destination address; a determination unit determining an address of a user terminal connected to one of the input ports from a source address included in the frame; a filtering database storing information on the output port connected to the user terminal having the destination address of the frame based on information received from the determination unit; a multicast gate information unit including information on multicast media access control (MAC) addresses of frames providing a monodirectional multicast service and blocking or forwarding all frames having a corresponding multicast MAC address as the destination address by checking whether the input and output ports are connected to an Internet group management protocol (IGMP) querier or not; and a port information transference unit learning the multicast MAC address of the IGMP querier connected to the apparatus, obtaining information on a port having the multicast MAC address as the destination address from the filtering database, and transferring the information to the multicast gate information unit. According to the present application, forged traffic is blocked from being multicasted and thus restricted resources of a network are prevented from being wasted. As a result, the network may be used more efficiently in an industrial field.

摘要翻译： 提供了一种用于阻止伪造的组播数据包的方法和装置。 该装置包括连接到用户终端的输入和输出端口; 转发处理单元，将通过所述输入端口之一输入的帧传送到连接到具有目的地地址的用户终端的输出端口之一; 确定单元，从包括在所述帧中的源地址确定连接到所述输入端口之一的用户终端的地址; 过滤数据库，其基于从所述确定单元接收的信息，存储关于连接到具有所述帧的目的地地址的用户终端的输出端口的信息; 组播门信息单元，其包括提供单向多播服务的帧的组播媒体访问控制（MAC）地址的信息，并且通过检查输入和输出端口是否连接到所述具有相应多播MAC地址的所有帧作为目的地地址来阻止或转发 一个互联网组管理协议（IGMP）查询器; 以及端口信息转发单元，用于学习与该装置连接的IGMP查询器的组播MAC地址，从过滤数据库获取具有组播MAC地址的端口作为目的地地址的信息，并将该信息传送给组播门信息单元。 根据本申请，伪造的业务被阻止被多播，从而防止网络的资源被浪费。 结果，可以在工业领域中更有效地使用网络。

公开(公告)号：US20100046513A1

公开(公告)日：2010-02-25

申请号：US12516088

申请日：2007-10-31

申请人： Heuk Park ,  Kyung-Gyu Jeon ,  Soon-Seok Lee ,  Jong-Tae Song

发明人： Heuk Park ,  Kyung-Gyu Jeon ,  Soon-Seok Lee ,  Jong-Tae Song

IPC分类号： H04L12/56

CPC分类号： H04N7/17318 ,  H04N7/17345 ,  H04N21/2543 ,  H04N21/25816 ,  H04N21/472 ,  H04N21/6125 ,  H04N21/6405

摘要： A system for and a method of providing IPTV service in a next generation network are provided. The system includes a service control unit, a transmission control unit, and an L2 switch unit. A service control unit authenticates a user terminal by receiving a request for providing a service from the user terminal which desires to receive the IPTV service and search for subscription information including the IPTV service for which the user has watching authority, when the user is an IPTV service subscriber. A transmission control unit extracts identification information of the user and a multicast address through which the IPTV service is provided from the subscription information found by the service control unit. An L2 switch unit performs switching so as to connect the multicast router which provides the IPTV service to the user terminal by identifying the watching authority of the user for the IPTV service corresponding to the request of the user terminal for providing the service by using the identification information and the multicast address through which the IPTV service provided, which are extracted by the transmission control unit.

摘要翻译： 提供了一种在下一代网络中提供IPTV服务的系统和方法。 该系统包括业务控制单元，传输控制单元和L2交换单元。 服务控制单元通过从用户终端接收提供服务的请求来认证用户终端，该用户终端希望接收IPTV服务，并且当用户是IPTV时，搜索包括用户具有观看权限的IPTV服务的订阅信息 服务订户。 传输控制单元从服务控制单元发现的订阅信息提取用户的识别信息和提供IPTV服务的多播地址。 L2交换单元进行交换，以通过使用识别符号来识别与用户终端的用户终端的请求对应的用于IPTV服务的用户的观看权限，从而将提供IPTV业务的组播路由器连接到用户终端 信息和IPTV服务提供的多播地址，由传输控制单元提取。

公开(公告)号：US20090150945A1

公开(公告)日：2009-06-11

申请号：US12137967

申请日：2008-06-12

申请人： Heuk Park ,  Soon-seok Lee

发明人： Heuk Park ,  Soon-seok Lee

IPC分类号： H04N7/173

CPC分类号： H04N21/64322 ,  H04N7/17318 ,  H04N7/17336 ,  H04N21/47202 ,  H04N21/643 ,  H04N21/6437

摘要： A method and apparatus for providing a video-on-demand (VOD) service are provided. The VOD service providing method includes: receiving a media setup request message from a user terminal, converting the media setup request message using a second protocol which is different from a first protocol on which the media setup request message is based, transmitting the converted media setup request message through a transmission network, receiving a response message in response to the converted media setup request message through the transmission network, converting the response message using the first protocol on which the media setup request message is based, and transmitting the response message to the user terminal; and converting the converted media setup request message received through the transmission network using the first protocol on which the media setup request message is based, transmitting the newly converted media setup request message to a VOD streaming server, converting the response message from the VOD streaming server using the second protocol, and transmitting the converted response message through the transmission network. Therefore, by preventing overlap of control processes, which may both be initiated when two protocols are used together, it is possible to efficiently perform controlling of a VOD service.

摘要翻译： 提供了一种用于提供视频点播（VOD）服务的方法和装置。 VOD服务提供方法包括：从用户终端接收媒体建立请求消息，使用与媒体建立请求消息所基于的第一协议不同的第二协议转换媒体建立请求消息，发送转换的媒体设置 通过传输网络请求消息，通过传输网络响应于转换的媒体建立请求消息接收响应消息，使用媒体建立请求消息所基于的第一协议转换响应消息，并将响应消息发送到 用户终端; 以及使用所述媒体建立请求消息所基于的所述第一协议转换通过所述传输网络接收的转换的媒体建立请求消息，将所述新转换的媒体建立请求消息发送到VOD流服务器，从所述VOD流服务器转换所述响应消息 使用第二协议，并通过传输网络发送转换的响应消息。 因此，通过防止当两个协议一起使用时可以启动的控制处理的重叠，可以有效地执行VOD服务的控制。

公开(公告)号：US08010978B2

公开(公告)日：2011-08-30

申请号：US12137947

申请日：2008-06-12

申请人： Heuk Park ,  Soon-seok Lee

发明人： Heuk Park ,  Soon-seok Lee

IPC分类号： H04N7/025

CPC分类号： G06Q30/0255 ,  G06Q30/0256 ,  H04H20/103 ,  H04N21/26241 ,  H04N21/2668 ,  H04N21/6125 ,  H04N21/812

摘要： Provided are an apparatus and method for providing an advertisement service personalized for each user or for each group. The personalized advertisement providing method includes: a personalized advertisement providing method which is used in an Internet Protocol Television (IPTV) System, including: receiving at least one broadcasting program of a plurality of broadcasting programs classified according to a plurality of channels; and determining whether a present time is an advertisement broadcasting time, transmitting a received broadcasting program to a plurality of user terminals which selects a channel on which the broadcasting program is provided if the present time is not an advertisement broadcasting time, dividing the plurality of user terminals into a plurality of groups and transmitting an advertisement classified for each group to one or more user terminals belonging to the group if the present time is an advertisement broadcasting time. Therefore, it is possible to enhance use efficiency of bandwidths, to reduce restrictions related to installation, etc. of an apparatus for providing advertisement services, and to reduce the number of apparatuses that have to be installed, resulting in reduction of costs.

摘要翻译： 提供了一种用于为每个用户或每个组提供个性化的广告服务的装置和方法。 个性化广告提供方法包括：在因特网协议电视（IPTV）系统中使用的个性化广告提供方法，包括：接收根据多个频道分类的多个广播节目的至少一个广播节目; 并且确定当前时间是否是广告广播时间，如果当前时间不是广告广播时间，则将接收到的广播节目发送到选择提供广播节目的频道的多个用户终端，将多个用户 如果当前时间是广告广播时间，则将终端分成多个组，并将分组为每个组的广告发送到属于该组的一个或多个用户终端。 因此，可以提高带宽的使用效率，减少用于提供广告服务的装置的安装等的限制，并且减少必须安装的装置的数量，导致成本的降低。

公开(公告)号：US20090150929A1

公开(公告)日：2009-06-11

申请号：US12137947

申请日：2008-06-12

申请人： Heuk Park ,  Soon-seok Lee

发明人： Heuk Park ,  Soon-seok Lee

IPC分类号： H04N7/025 ,  H04N7/12

CPC分类号： G06Q30/0255 ,  G06Q30/0256 ,  H04H20/103 ,  H04N21/26241 ,  H04N21/2668 ,  H04N21/6125 ,  H04N21/812

摘要： Provided are an apparatus and method for providing an advertisement service personalized for each user or for each group. The personalized advertisement providing method includes: a personalized advertisement providing method which is used in an Internet Protocol Television (IPTV) System, including: receiving at least one broadcasting program of a plurality of broadcasting programs classified according to a plurality of channels; and determining whether a present time is an advertisement broadcasting time, transmitting a received broadcasting program to a plurality of user terminals which selects a channel on which the broadcasting program is provided if the present time is not an advertisement broadcasting time, dividing the plurality of user terminals into a plurality of groups and transmitting an advertisement classified for each group to one or more user terminals belonging to the group if the present time is an advertisement broadcasting time. Therefore, it is possible to enhance use efficiency of bandwidths, to reduce restrictions related to installation, etc. of an apparatus for providing advertisement services, and to reduce the number of apparatuses that have to be installed, resulting in reduction of costs.

摘要翻译： 提供了一种用于为每个用户或每个组提供个性化的广告服务的装置和方法。 个性化广告提供方法包括：在因特网协议电视（IPTV）系统中使用的个性化广告提供方法，包括：接收根据多个频道分类的多个广播节目的至少一个广播节目; 并且确定当前时间是否是广告广播时间，如果当前时间不是广告广播时间，则将接收到的广播节目发送到选择提供广播节目的频道的多个用户终端，将多个用户 如果当前时间是广告广播时间，则将终端分成多个组，并将分组为每个组的广告发送到属于该组的一个或多个用户终端。 因此，可以提高带宽的使用效率，减少用于提供广告服务的装置的安装等的限制，并且减少必须安装的装置的数量，导致成本的降低。

公开(公告)号：US20090116848A1

公开(公告)日：2009-05-07

申请号：US12293973

申请日：2007-02-21

申请人： Bong-Kyu Kim ,  Heuk Park ,  Kwangjoon Kim ,  Bong-Tae Kim

发明人： Bong-Kyu Kim ,  Heuk Park ,  Kwangjoon Kim ,  Bong-Tae Kim

IPC分类号： H04B10/00

CPC分类号： H04L25/4904 ,  H03M5/12 ,  H04B10/2587

摘要： An optical communication system and method using Manchester encoded signal remodulation are provided. The optical communication system includes a transmitter generating and transmitting a Manchester encoded optical signal including a first data stream, and a receiver receiving an optical signal obtained by dividing power of the Manchester encoded optical signal into two parts and modulating one of the two parts to include a second data stream, and recovering the second data stream. In two-way communication, the optical communication system and method allow one party to generate and transmit a Manchester encoded signal (i.e., a downstream signal) to the other party and allow the other party to generate an upstream signal by modulating the optical power of the downstream signal without using a light source.

摘要翻译： 提供了使用曼彻斯特编码信号再调制的光通信系统和方法。 光通信系统包括发射和发送包括第一数据流的曼彻斯特编码的光信号的发射机和接收通过将曼彻斯特编码的光信号的功率分成两部分而获得的光信号的接收机，并且调制这两部分中的一个以包括 第二数据流，并且恢复第二数据流。 在双向通信中，光通信系统和方法允许一方生成曼彻斯特编码信号（即，下行信号）并发送给另一方，并允许另一方通过调制光信号的光功率来产生上行信号 下游信号不使用光源。

公开(公告)号：US07242834B2

公开(公告)日：2007-07-10

申请号：US10903056

申请日：2004-07-30

申请人： Won Kyoung Lee ,  Heuk Park ,  Hyun Jae Lee

发明人： Won Kyoung Lee ,  Heuk Park ,  Hyun Jae Lee

IPC分类号： G02B6/02 ,  G02B6/00

CPC分类号： G02B6/02028 ,  G02B6/02276 ,  G02B6/0281 ,  G02B6/03633 ,  G02B6/03644 ,  G02F1/395 ,  G02F2001/392

摘要： Provided is a dispersion-shifted fiber for an optical parametric amplifier. The dispersion-shifted fiber is a silica-based optical fiber and has a large nonlinear coefficient and a small effective area. The dispersion-shifted fiber also reduces a bending loss and a splice loss due to a mode field diameter difference between it and a conventional single mode fiber. For this, the dispersion-shifted fiber comprises a rectangular core with a very small radius and a high refractive index, a depressed inner clad, and an outer clad with a ring. The core and/or the inner clad are/is doped with a heavy metal.

摘要翻译： 提供了一种用于光学参量放大器的色散位移光纤。 色散位移光纤是一种二氧化硅基光纤，具有非线性系数大，有效面积小。 色散位移光纤还减少了由于其与常规单模光纤之间的模场直径差导致的弯曲损耗和接合损耗。 为此，色散位移光纤包括具有非常小的半径和高折射率的矩形芯，凹陷的内包层和具有环的外包层。 芯和/或内包层掺杂有重金属。

公开(公告)号：US07230958B2

公开(公告)日：2007-06-12

申请号：US10835225

申请日：2004-04-28

申请人： Sun Hyok Chang ,  Hee Sang Chung ,  Jin Soo Han ,  Ji Sung Jung ,  Heuk Park ,  Won Kyoung Lee ,  Hyun Jae Lee

发明人： Sun Hyok Chang ,  Hee Sang Chung ,  Jin Soo Han ,  Ji Sung Jung ,  Heuk Park ,  Won Kyoung Lee ,  Hyun Jae Lee

IPC分类号： H01S3/30

CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/094076 ,  H01S3/094096 ,  H01S3/1301 ,  H01S3/1305

摘要： Provided are a Raman amplifier and a Raman pumping method. A light source unit outputs a pumping light having a wavelength that periodically changes. A light intensity control unit varies a light intensity of the pumping light using the pumping light to improve the gain flatness of a Raman gain. A control unit directs the light intensity control unit to control the light intensity of the pumping light in synchronization with changes in the wavelength of the pumping light.

摘要翻译： 提供了拉曼放大器和拉曼泵浦方法。 光源单元输出具有周期性变化的波长的泵浦光。 光强度控制单元使用泵浦光来改变泵浦光的光强度，以提高拉曼增益的增益平坦度。 控制单元引导光强度控制单元与泵浦光的波长的变化同步地控制泵浦光的光强度。

公开(公告)号：US20050111802A1

公开(公告)日：2005-05-26

申请号：US10903056

申请日：2004-07-30

申请人： Won Lee ,  Heuk Park ,  Hyun Lee

发明人： Won Lee ,  Heuk Park ,  Hyun Lee

IPC分类号： G02B6/00 ,  G02B6/02 ,  G02F1/39 ,  G02B6/16 ,  G02B6/18

CPC分类号： G02B6/02028 ,  G02B6/02276 ,  G02B6/0281 ,  G02B6/03633 ,  G02B6/03644 ,  G02F1/395 ,  G02F2001/392

摘要： Provided is a dispersion-shifted fiber for an optical parametric amplifier. The dispersion-shifted fiber is a silica-based optical fiber and has a large nonlinear coefficient and a small effective area. The dispersion-shifted fiber also reduces a bending loss and a splice loss due to a mode field diameter difference between it and a conventional single mode fiber. For this, the dispersion-shifted fiber comprises a rectangular core with a very small radius and a high refractive index, a depressed inner clad, and an outer clad with a ring. The core and/or the inner clad are/is doped with a heavy metal.

摘要翻译： 提供了一种用于光学参量放大器的色散位移光纤。 色散位移光纤是一种二氧化硅基光纤，具有非线性系数大，有效面积小。 色散位移光纤还减少了由于其与常规单模光纤之间的模场直径差导致的弯曲损耗和接合损耗。 为此，色散位移光纤包括具有非常小的半径和高折射率的矩形芯，凹陷的内包层和具有环的外包层。 芯和/或内包层掺杂有重金属。