公开(公告)号：US07394772B2

公开(公告)日：2008-07-01

申请号：US10305392

申请日：2002-11-27

Applicant: Yong Sik Shin ,  Si Hoon Ryu ,  Dong Hahk Lee ,  Jong Tae Ihm

Inventor： Yong Sik Shin ,  Si Hoon Ryu ,  Dong Hahk Lee ,  Jong Tae Ihm

IPC: H04L12/28

CPC classification number: H04L47/825 ,  H04L45/00 ,  H04L45/16 ,  H04L45/50 ,  H04L47/70 ,  H04L47/724 ,  H04L47/728 ,  H04L47/806 ,  H04L47/829

Abstract: A point-to-multipoint traffic routing method that routes a multicast traffic through a determined tree on an MPLS network. A node on an MPLS network conducting a point-to-multipoint traffic routing method receives a message with an object including topology information on a determined tree, determines whether itself is a copy node or not based on the topology information, and copies, if determined to be a copy node, the received message to transmit to at least two nodes specified as next by the topology information. The present routing method ensures smooth operations of a copy and a merge node as well as an overall network.

Abstract translation: 一种点对多业务路由方法，通过MPLS网络上确定的树路由组播流量。 进行点对多点流量路由方法的MPLS网络上的一个节点接收一个消息，该对象包括一个确定树上的拓扑信息的对象，根据拓扑信息确定自己是否是一个复制节点，如果确定 作为复制节点，接收到的消息将被发送到由拓扑信息指定为下一个的至少两个节点。 本路由方法确保了拷贝和合并节点以及整个网络的平滑运行。

公开(公告)号：US07324478B2

公开(公告)日：2008-01-29

申请号：US10425141

申请日：2003-04-28

Applicant: Seong-Soo Park ,  Chan-Jeom Phang ,  Dong-Hahk Lee ,  Yong-Sik Shin ,  Sang Shin Lee

Inventor： Seong-Soo Park ,  Chan-Jeom Phang ,  Dong-Hahk Lee ,  Yong-Sik Shin ,  Sang Shin Lee

IPC: H04Q7/00

CPC classification number: H04W36/30 ,  H04L67/04 ,  H04L67/14 ,  H04L69/329 ,  H04W36/14 ,  H05B6/6408

Abstract: The present invention discloses an apparatus and method for deciding an access system based on WLAN signal strength in a WLAN/mobile phone network interworking system, and a mobile terminal therefor. The method for deciding the access system based on the WLAN signal strength in the WLAN/mobile phone network interworking system includes an initialization step for performing an initialization process on a WLAN driver module and a mobile phone network driver module, and measuring and displaying WLAN signal strength, a service decision step for selecting a WLAN service or mobile phone network service according to the measured WLAN signal strength, and a service access step for enabling the corresponding driver module to access the service decided in the service decision step. The apparatus and method for deciding the access system based on the WLAN signal strength provide a roaming service by efficiently interworking a WLAN which provides a high speed internet access service based on hot spots and a mobile phone network which provides a national communication service, to facilitate activation of the wireless internet service.

Abstract translation: 本发明公开了一种基于WLAN /移动电话网络互通系统中的WLAN信号强度来决定接入系统的装置和方法及其移动终端。 基于WLAN /移动电话网络互通系统中的WLAN信号强度来决定接入系统的方法包括：对WLAN驱动器模块和移动电话网络驱动器模块执行初始化处理的初始化步骤，以及测量和显示WLAN信号 强度，根据所测量的WLAN信号强度来选择WLAN服务或移动电话网络服务的服务决定步骤，以及用于使对应的驾驶员模块能够访问在服务决策步骤中确定的服务的服务访问步骤。 基于WLAN信号强度决定接入系统的装置和方法通过有效地互通提供基于热点的高速互联网接入服务的WLAN和提供国家通信业务的移动电话网络来提供漫游服务，以便于 激活无线互联网服务。

公开(公告)号：US07099397B2

公开(公告)日：2006-08-29

申请号：US10253830

申请日：2002-09-23

Applicant: Goon Seop Lee ,  Dong Hahk Lee ,  Jong Tae Ihm

Inventor： Goon Seop Lee ,  Dong Hahk Lee ,  Jong Tae Ihm

IPC: H04K1/10 ,  H04J11/00

CPC classification number: H04L27/2613 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2675 ,  H04L2027/003 ,  H04L2027/0095

Abstract: In an orthogonal frequency division multiplexing (OFDM) system, a receiver includes a received signal transformer, a frequency offset estimator and a frequency compensator. The received signal transformer removes from a training symbol a guardtone and a sub-carrier deviated from a mean value of effective sub-carrier signals by over a predetermined value. The frequency offset estimator estimates the frequency offset of the OFDM digital signal and the frequency compensator compensates the frequency offset of received signals by using the estimated frequency offset. Thus, data transmission efficiency can be greatly improved and influence from a frequency-selective noise channel can be minimized. Further, by removing data unnecessary for the frequency offset estimation, the calculation amount can be reduced.

公开(公告)号：US20050286489A1

公开(公告)日：2005-12-29

申请号：US10510728

申请日：2002-10-24

Applicant: Yonk-Sik Shin ,  Si-Hoon Ryu ,  Dong-Hahk Lee ,  Chan-Jeom Bhang

Inventor： Yonk-Sik Shin ,  Si-Hoon Ryu ,  Dong-Hahk Lee ,  Chan-Jeom Bhang

IPC: G06F21/20 ,  H04B7/26 ,  H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04M15/00 ,  H04W4/24 ,  H04W12/06 ,  H04W84/12 ,  H04W88/08 ,  H04L12/66

CPC classification number: H04M15/00 ,  H04L63/0876 ,  H04W4/24 ,  H04W12/06 ,  H04W36/0038 ,  H04W84/12 ,  H04W88/08

Abstract: The present invention discloses an authentication system and method having mobility in a public wireless LAN. The authentication system includes an access point for requesting authentication of a wireless terminal to an access point manager, enabling data transmission and reception of the authenticated wireless terminal, and requesting the access point manager to charge the wireless terminal, and the access point manager for authenticating the wireless terminal which has already been authenticated on the basis of previously-registered registration information upon the request of the access point, authenticating the wireless terminal which has not been registered through an authentication server of a wireless network operator, and transmitting the authentication information to the access point. As a result, the wireless terminal can continuously access the network through the access points of the same subnet as well as different subnet without re-authentication, thereby achieving mobility and processing charging.

Abstract translation: 本发明公开了一种在公共无线LAN中具有移动性的认证系统和方法。 认证系统包括用于向接入点管理器请求无线终端的认证的接入点，使能够认证的无线终端的数据发送和接收，以及请求接入点管理者向无线终端充电，接入点管理器用于认证 已经根据接入点的请求基于先前登记的注册信息进行认证的无线终端，通过无线网络运营商的认证服务器认证尚未登记的无线终端，并将认证信息发送到 接入点。 结果，无线终端可以通过同一子网的接入点以及不同的子网连续访问网络，而无需重新认证，从而实现移动性和处理计费。

公开(公告)号：US20130290390A1

公开(公告)日：2013-10-31

申请号：US13883496

申请日：2011-11-03

Applicant: Seung Lock Choe ,  Nam Sook Wee ,  Doo Seok Lee ,  Jung Kyo Sohn ,  Haeng Moon Kim ,  Yong Gil Park ,  Keun Tae Park ,  Dong Hahk Lee

Inventor： Seung Lock Choe ,  Nam Sook Wee ,  Doo Seok Lee ,  Jung Kyo Sohn ,  Haeng Moon Kim ,  Yong Gil Park ,  Keun Tae Park ,  Dong Hahk Lee

IPC: G06F15/18

CPC classification number: G06F15/18 ,  G06F15/02 ,  G06F17/10 ,  G06F17/215

Abstract: The present disclosure relates to a method and apparatus for inputting equations. An equation input apparatus includes a learning context recognizer for extracting learning context information regarding a learner; a target equation group extractor for generating a target equation group including target mathematical symbols based on the extracted learning context information; and a predicted equation provider for providing a predicted mathematical symbol list relating to information, input or selected from the target equation group by user command, and for reflecting an equation selected from the predicted mathematical symbol list in the input or selected information.

Abstract translation: 本公开涉及一种用于输入等式的方法和装置。 方程输入装置包括用于提取关于学习者的学习情境信息的学习上下文识别器; 目标方程组提取器，用于基于所提取的学习上下文信息生成包括目标数学符号的目标方程组; 以及预测方程式提供器，用于提供与通过用户命令从目标方程组输入或选择的信息相关的预测数学符号列表，并用于反映从输入或选择的信息中的预测数学符号列表中选出的方程。

公开(公告)号：US08407741B2

公开(公告)日：2013-03-26

申请号：US12446179

申请日：2007-11-20

Applicant: Goon Seop Lee ,  Dong Hahk Lee ,  Jae Hwang Yu ,  Jong Tae Ihm ,  Se Hyun Oh ,  Ku Ik Chung

Inventor： Goon Seop Lee ,  Dong Hahk Lee ,  Jae Hwang Yu ,  Jong Tae Ihm ,  Se Hyun Oh ,  Ku Ik Chung

IPC: H04N5/445 ,  H04N7/173

CPC classification number: H04N21/435 ,  H04L67/2804 ,  H04L69/28 ,  H04N21/23412 ,  H04N21/235 ,  H04N21/242 ,  H04N21/4348 ,  H04N21/8133 ,  H04N21/8547

Abstract: The present invention relates to a system and method for providing a supplementary information service related to broadcast content. The system for providing a supplementary information service related to broadcast content being broadcasted to user terminal comprises a Time Information Creating Server for Identifying a start time information of the broadcast content; and a Supplementary Information Service Providing Server for receiving the start time information of the broadcast content from the Time Information Creating Server, calculating elapsed time for a specific scene based on the start time information, and providing a user terminal with an supplementary information corresponding to the scene based on the elapsed time, through a communication network. And the method for providing a supplementary information related to broadcast content being broadcasted to user terminal comprises steps of identifying a start time information of the broadcast content; calculating elapsed time for a specific scene based on the start time information; and providing a user terminal with an supplementary information corresponding to the scene based on the elapsed time, through a communication network.

Abstract translation: 本发明涉及一种用于提供与广播内容相关的补充信息服务的系统和方法。 用于提供与正广播的广播内容相关的补充信息服务的系统包括用于识别广播内容的开始时间信息的时间信息创建服务器; 以及补充信息服务提供服务器，用于从时间信息创建服务器接收广播内容的开始时间信息，基于开始时间信息计算特定场景的经过时间，以及向用户终端提供对应于 基于经过的时间，通过通信网络的场景。 并且提供与正广播的广播内容有关的补充信息的方法包括步骤：识别广播内容的开始时间信息; 基于开始时间信息计算特定场景的经过时间; 以及通过通信网络，基于经过的时间向用户终端提供与场景相对应的补充信息。

公开(公告)号：US08341671B2

公开(公告)日：2012-12-25

申请号：US12446414

申请日：2008-01-08

Applicant: Goon Seop Lee ,  Dong Hahk Lee ,  Jae Hwang Yu ,  Jong Tae Ihm ,  Se Hyun Oh ,  Kang Il Koh

Inventor： Goon Seop Lee ,  Dong Hahk Lee ,  Jae Hwang Yu ,  Jong Tae Ihm ,  Se Hyun Oh ,  Kang Il Koh

IPC: H04N7/10 ,  H04N5/445 ,  H04N7/173 ,  G06K9/00

CPC classification number: H04N21/6581 ,  H04L65/4076 ,  H04N5/445 ,  H04N7/17318 ,  H04N21/235 ,  H04N21/2353 ,  H04N21/41407 ,  H04N21/4307 ,  H04N21/435 ,  H04N21/4722 ,  H04N21/4725 ,  H04N21/8133 ,  H04N21/8547

Abstract: Disclosed herein is a system and method for providing a supplementary information associated with a broadcast content. The system provides a supplementary information associated with a specific broadcast program in the broadcast content by means of a supplementary information server, wherein the supplementary information server comprises a broadcasting receiving unit for receiving the broadcast content; a synchronization information unit for storing a synchronization information of the supplementary information associated with the specific broadcast program; a video comparison unit for comparing screens of the broadcast content with a previously stored scene change screen of the specific broadcast program and setting a start time of the specific broadcast program; a supplementary information extracting unit for calculating an elapsed time from the start time of the specific broadcast program to a specific screen and extracting the supplementary information corresponding to the elapsed time. The supplementary information associated with the specific broadcast program in the broadcast content is provided through the steps of receiving a synchronization information of the supplementary information associated with the specific broadcast program; setting a start time of the specific broadcast program by comparing screens of the broadcast content with a previously stored scene change screen of the specific broadcast program; calculating an elapsed time corresponding to a specific screen based on the start time; extracting the supplementary information corresponding to the elapsed time.

Abstract translation: 本文公开了一种用于提供与广播内容相关联的补充信息的系统和方法。 该系统通过辅助信息服务器提供与广播内容中的特定广播节目相关联的补充信息，其中补充信息服务器包括：广播接收单元，用于接收广播内容; 同步信息单元，用于存储与特定广播节目相关联的补充信息的同步信息; 视频比较单元，用于将广播内容的画面与特定广播节目的先前存储的场景改变画面进行比较，并设置特定广播节目的开始时间; 补充信息提取单元，用于计算从特定广播节目的开始时间到特定屏幕的经过时间，并提取与经过的时间相对应的补充信息。 通过以下步骤提供与广播内容中的特定广播节目相关联的补充信息：接收与特定广播节目相关联的补充信息的同步信息; 通过将广播内容的画面与特定广播节目的先前存储的场景改变画面进行比较来设置特定广播节目的开始时间; 基于开始时间计算与特定画面对应的经过时间; 提取与经过的时间相对应的补充信息。

公开(公告)号：US08320353B2

公开(公告)日：2012-11-27

申请号：US12665885

申请日：2008-06-19

Applicant: Dong-Hahk Lee ,  Ra-Mi Lee ,  Seong-Soo Park ,  Sang-Shin Lee ,  Jae-Hwang Yu ,  Jong-Tae Ihm ,  Duk-Kyung Kim

Inventor： Dong-Hahk Lee ,  Ra-Mi Lee ,  Seong-Soo Park ,  Sang-Shin Lee ,  Jae-Hwang Yu ,  Jong-Tae Ihm ,  Duk-Kyung Kim

IPC: H04J1/00 ,  H04J3/17

CPC classification number: H04B1/7105 ,  H04B2201/70709

Abstract: Disclosed is a method and system for estimating an adaptive joint channel in a CDMA system based on TDD. The method includes the steps of a) receiving activity information of a mobile terminal; b) parsing the activity information, and transmitting a midamble sequence to the mobile terminal when a result of the parsing shows that the mobile terminal is in an ON state; c) conducting adaptive joint channel estimation by using the midamble sequence in the mobile terminal; and d) conducting adaptive joint detection by using a channel impulse response of the mobile terminal, obtained as a result of conducting the adaptive joint channel estimation. The method and system decreases the complexity in channel estimation and additionally increases the accuracy of channel estimation by reducing transmission power consumption and eliminating unnecessary interference.

Abstract translation: 公开了一种基于TDD来估计CDMA系统中的自适应联合信道的方法和系统。 该方法包括以下步骤：a）接收移动终端的活动信息; b）解析活动信息，并且当解析结果表明移动终端处于ON状态时，向移动终端发送midamble序列; c）通过使用移动终端中的中间码序列来进行自适应联合信道估计; 以及d）通过使用作为进行自适应联合信道估计的结果获得的移动终端的信道脉冲响应来进行自适应联合检测。 该方法和系统降低了信道估计的复杂度，并通过降低传输功耗并消除了不必要的干扰，增加了信道估计的准确性。

公开(公告)号：US08072940B2

公开(公告)日：2011-12-06

申请号：US11576832

申请日：2005-01-05

Applicant: Seong-Soo Park ,  Dong-Hahk Lee

Inventor： Seong-Soo Park ,  Dong-Hahk Lee

IPC: H04W4/00 ,  H04W36/00

CPC classification number: H04W36/14 ,  H04W36/0011

Abstract: In the data call handover method, the mobile communication terminal registers a Mobile Internet Protocol (MIP address) through an asynchronous mobile communication network and receives data call service when a data call connection event is initiated by the mobile communication terminal. It is determined whether the mobile communication terminal has entered an area in which the asynchronous mobile communication network and a synchronous mobile communication network overlap. If the mobile communication terminal has entered the overlap area, it is determined whether to perform handover to the synchronous mobile communication network based on the intensity of a signal of the asynchronous mobile communication network. If handover is to be performed, a data call between the mobile communication terminal and the synchronous mobile communication network is established and the MIP address is registered. The service of the data call, which is provided by the asynchronous mobile communication network, is linked with the service of the synchronous mobile communication network. The data call between the mobile communication terminal and the asynchronous mobile communication network is released.

Abstract translation: 在数据呼叫切换方法中，移动通信终端通过异步移动通信网络注册移动因特网协议（MIP地址），并且在移动通信终端发起数据呼叫连接事件时接收数据呼叫业务。 确定移动通信终端是否进入异步移动通信网络和同步移动通信网络重叠的区域。 如果移动通信终端已经进入重叠区域，则基于异步移动通信网络的信号的强度来确定是否对同步移动通信网络进行切换。 如果要执行切换，则建立移动通信终端与同步移动通信网络之间的数据呼叫，并登记MIP地址。 由异步移动通信网络提供的数据呼叫的服务与同步移动通信网络的服务相关联。 移动通信终端与异步移动通信网络之间的数据呼叫被释放。

公开(公告)号：US07697437B2

公开(公告)日：2010-04-13

申请号：US10175855

申请日：2002-06-21

Applicant: Yong Sik Shin ,  Si Hoon Ryu ,  Dong Hahk Lee ,  Jong Tae Ihm

Inventor： Yong Sik Shin ,  Si Hoon Ryu ,  Dong Hahk Lee ,  Jong Tae Ihm

IPC: H04L12/28

CPC classification number: H04L41/12 ,  H04L45/02 ,  H04L45/12 ,  H04L45/125 ,  H04L45/24

Abstract: The present invention relates to a method of determining at least one traffic route in an MPLS (Multi-Protocol Label Switching) network. In this route determining method, when a traffic is arrived at an ingress edge router, the edge router removes links of remaining capacity below the traffic demand from all links of a given MPLS network to produce the first network topology, calculates distance of every link of the first network topology based on current traffic flowing each link and the traffic demand, determines the first route for the traffic demand based on the calculated distance information; removes links of remaining capacity below the traffic demand and links belonging to the first route from the MPLS network to produce the second network topology, calculates every link distance of the second topology based on current traffic flowing each link and the traffic demand, determines the second route for the traffic demand based on the distance information obtained from the second topology, partitions the arrived traffic into two portions, and allocates the two portions to the first and the second route, respectively.

Abstract translation: 本发明涉及一种在MPLS（多协议标签交换）网络中确定至少一个业务路由的方法。 在该路由确定方法中，当业务到达入口边缘路由器时，边缘路由器从给定MPLS网络的所有链路去除低于流量需求的剩余容量的链路，以产生第一网络拓扑，计算每个链路的距离 基于流量每个链路的当前流量和流量需求的第一网络拓扑基于所计算的距离信息确定用于业务需求的第一路由; 删除低于业务需求的剩余容量的链路和属于MPLS网络的第一路由的链路以产生第二网络拓扑，基于流经每个链路的当前业务和业务需求来计算第二拓扑的每个链路距离，确定第二 基于从第二拓扑获得的距离信息来获取交通需求的路线，将到达的交通分为两部分，并将两部分分配给第一和第二路线。