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    • 54. 发明申请
    • MOBILE MULTICAST SYSTEM FOR SUPPORTING NETWORK-BASED MOBILITY AND METHOD THEREOF
    • 用于支持基于网络的移动性的移动多播系统及其方法
    • US20120269111A1
    • 2012-10-25
    • US13518180
    • 2010-10-22
    • Tai-Won UmJong-Wook NamKyeongseob ChoKyounghee LeeHyun-Woo LeeWon Ryu
    • Tai-Won UmJong-Wook NamKyeongseob ChoKyounghee LeeHyun-Woo LeeWon Ryu
    • H04H20/71
    • H04L12/189H04L45/16H04W8/082H04W8/186H04W76/40
    • The present invention relates to a mobile multicast system and a method thereof, and more particularly to a network-based mobility multicast system and a method thereof. The system according to one embodiment of the present invention is the mobile multicast system for supporting the network-based mobility comprising: access points which communicate with mobile terminals within an access network through a wireless channel, obtains layer 2 addresses of the terminals, and provides the obtained layer 2 addresses of the terminals; management parts which control a handover of each terminal included in the access points, transmit multicast packets to be provided to the terminals, and are provided according to the access points; a router which receives the multicast data through the network, and transmits the multicast packets to the terminals for receiving the multicast data; and a mobile control server which obtains position information of the terminals from the management parts, transmits a query message for determining the reception of the multicast data to each of the management parts so as to confirm whether the terminals join the multicast when receiving the query message from the router, and controls setting of a tunnel between the router and the management part for transmitting a membership report message when receiving the membership report message for joining the multicast.
    • 移动组播系统及其方法技术领域本发明涉及移动组播系统及其方法,更具体地涉及一种基于网络的移动性组播系统及其方法。 根据本发明的一个实施例的系统是用于支持基于网络的移动性的移动组播系统,包括:通过无线信道与接入网内的移动终端通信的接入点,获得终端的2层地址,并提供 获得的层2地址的终端; 控制接入点中包含的每个终端的切换的管理部件,发送要提供给终端的多播分组,并根据接入点提供; 通过网络接收组播数据的路由器,并将组播数据包发送到终端以接收组播数据; 以及移动控制服务器,其从所述管理部分获取所述终端的位置信息,向所述管理部件发送用于确定所述多播数据的接收的查询消息,以便在接收到所述查询消息时确认所述终端是否加入所述多播 并且在接收到加入组播的成员关系报告消息时,控制路由器和管理部分之间的隧道的设置,以发送成员报告消息。
    • 56. 发明授权
    • Semiconductor integrated circuit and method of controlling the same
    • 半导体集成电路及其控制方法
    • US07994831B2
    • 2011-08-09
    • US12176217
    • 2008-07-18
    • Hyun-Woo LeeWon-Joo Yun
    • Hyun-Woo LeeWon-Joo Yun
    • H03L7/06
    • H03L7/0814H03L7/0802H03L7/087H03L7/095
    • A semiconductor integrated circuit is disclosed. The disclosed semiconductor integrated circuit of the present invention includes a DLL (Delay Locked Loop) controller that controls whether to activate a DLL at the entry of a power down mode, in response to a result of detecting whether a range of phase change of an external clock signal is within a predetermined range, and a DLL block that provides a result of comparing a reference clock signal with a feedback clock signal to the DLL controller and also provides a delay locked clock signal that is periodically updated, in response to the reference clock signal, under the control of an activated output signal from the DLL controller.
    • 公开了一种半导体集成电路。 所公开的本发明的半导体集成电路包括响应于检测外部的相位变化范围的结果来控制是否在断电模式的入口处激活DLL的DLL(延迟锁定环路) 时钟信号在预定范围内,以及DLL块,其将提供将参考时钟信号与反馈时钟信号进行比较的结果提供给DLL控制器,并且还响应于参考时钟提供周期性更新的延迟锁定时钟信号 信号,在来自DLL控制器的激活的输出信号的控制下。
    • 58. 发明授权
    • Apparatus and method of generating output enable signal for semiconductor memory apparatus
    • 产生用于半导体存储装置的输出使能信号的装置和方法
    • US07969802B2
    • 2011-06-28
    • US12185866
    • 2008-08-05
    • Hyun-Woo Lee
    • Hyun-Woo Lee
    • G11C7/00
    • G11C7/22G11C7/1012G11C7/1027G11C7/1051G11C7/1066G11C7/222
    • A timing signal generator generates a timing signal when an external clock is synchronized with a predetermined internal timing. A frequency-divided clock generator divide a frequency of a DLL (Delay Locked Loop) clock so as to generate an even-numbered divided clock and an odd-numbered divided clock. An even-numbered output enable signal generator generates an even-numbered output enable signal on the basis of an external read command, the timing signal, a CL (CAS Latency), and the even-numbered divided clock. An odd-numbered output enable signal generator generates an odd-numbered output enable signal on the basis of the external read command, a timing signal in which the timing signal is inverted, the CL, and the odd-numbered divided clock. A logical unit logically operates the even-numbered output enable signal and the odd-numbered output enable signal and outputs an output enable signal.
    • 当外部时钟与预定的内部定时同步时,定时信号发生器产生定时信号。 分频时钟发生器分割DLL(延迟锁定环)时钟的频率,以产生偶数分频时钟和奇数分频时钟。 偶数输出使能信号发生器基于外部读取命令,定时信号,CL(CAS延迟)和偶数分频时钟产生偶数输出使能信号。 奇数编号的输出使能信号发生器根据外部读取命令,定时信号反相的定时信号,CL和奇数分频时钟产生奇数编号的输出使能信号。 逻辑单元逻辑地操作偶数输出使能信号和奇数输出使能信号,并输出一个输出使能信号。
    • 60. 发明授权
    • Power-down mode control apparatus and DLL circuit having the same
    • 掉电模式控制装置和DLL电路具有相同的功能
    • US07868673B2
    • 2011-01-11
    • US12698606
    • 2010-02-02
    • Hyun-Woo LeeWon-Joo YunDong-Suk Shin
    • Hyun-Woo LeeWon-Joo YunDong-Suk Shin
    • H03L7/06
    • G11C7/02G11C5/143G11C5/144G11C7/22G11C7/222
    • A power-down mode control apparatus includes an internal power-down control block configured to receive a locking completion signal and to generate an internal power-down signal, which is toggled for a predetermined time; a noise check block configured to check occurrence/non-occurrence of noise on the basis of a phase detection signal and to generate a plurality of power-down selection signals in response to the locking completion signal and the internal power-down signal; and a power-down enter control block configured to generate a plurality of power-down enter signals, which instruct individual circuits to enter a power-down mode in response to a reference clock signal, the plurality of power-down selection signals, a power-down mode signal, and the internal power-down signal.
    • 断电模式控制装置包括内部掉电控制块,其被配置为接收锁定完成信号并产生切换预定时间的内部掉电信号; 噪声检查块,被配置为基于相位检测信号来检查噪声的发生/不发生,并且响应于锁定完成信号和内部掉电信号而产生多个掉电选择信号; 以及断电进入控制块,被配置为产生多个断电输入信号,其响应于参考时钟信号指示各个电路进入掉电模式,所述多个掉电选择信号,功率 下降模式信号和内部掉电信号。