公开(公告)号：US20060053009A1

公开(公告)日：2006-03-09

申请号：US11200203

申请日：2005-08-10

申请人： Myeong-Gi Jeong ,  Myeon-Kee Youn ,  Hyun-Sik Shim

发明人： Myeong-Gi Jeong ,  Myeon-Kee Youn ,  Hyun-Sik Shim

IPC分类号： G10L15/20

CPC分类号： G10L15/30 ,  G10L25/78

摘要： A distributed speech recognition system and method thereof in accordance with the present invention enables a word and a natural language to be recognized using detection of a pause period in a speech period in an inputted speech signal, and various groups of recognition vocabulary (for example, a home speech recognition vocabulary, a telematics vocabulary for a vehicle, a vocabulary for call center, and so forth) to be processed in the same speech recognition system by determining the recognition vocabulary required by a corresponding terminal using an identifier of the terminal since various terminals require various speech recognition targets. In addition, various types of channel distortion occurring due to the type of terminal and the recognition environment are minimized by adapting them to a speech database model using a channel estimation method so that the speech recognition performance is enhanced.

摘要翻译： 根据本发明的分布式语音识别系统及其方法使得能够使用输入的语音信号中的语音周期中的暂停时段的检测来识别单词和自然语言，以及各种识别词汇组（例如， 家庭语音识别词汇，用于车辆的远程信息处理词汇表，呼叫中心的词汇表等）在同一语音识别系统中通过使用终端的标识符来确定相应终端所需的识别词汇，因为各种 终端需要各种语音识别目标。 此外，通过使用信道估计方法使它们适应于语音数据库模型，使得由于终端类型和识别环境而发生的各种类型的信道失真被最小化，从而增强了语音识别性能。

公开(公告)号：US20070160057A1

公开(公告)日：2007-07-12

申请号：US11643815

申请日：2006-12-22

申请人： Soung-Kwan Kimn ,  Hyun-Min Yoon ,  Hui-Jae Lee ,  Ji-Youn Jung ,  Myeon-Kee Youn ,  Seong-Joon Jeon

发明人： Soung-Kwan Kimn ,  Hyun-Min Yoon ,  Hui-Jae Lee ,  Ji-Youn Jung ,  Myeon-Kee Youn ,  Seong-Joon Jeon

IPC分类号： H04L12/56 ,  H04J1/02

CPC分类号： H04L65/1069 ,  H04L65/1009 ,  H04L65/1043 ,  H04L65/608 ,  H04N7/141 ,  H04N7/147

摘要： In a Voice over Internet Protocol (VoIP) video communication method and apparatus, first and second VoIP-based terminals store video event indexes and images mapped thereto with respect to state information of a user and terminal, and establish a session using session establishment information defining the video event. The first terminal then transmits a data packet including the video event index, and the second terminal receives the data packet and outputs an image mapped to the video event index of the images stored in advance. Thus, by transmitting and receiving a predefined index alone without transmitting user and terminal states as a real time data-type image, the VoIP video communication method and apparatus prevent unnecessary waste of bandwidth in video communication.

摘要翻译： 在VoIP协议（VoIP）视频通信方法和装置中，第一和第二基于VoIP的终端存储关于用户和终端的状态信息映射到其上的视频事件索引和图像，并且使用定义的会话建立信息建立会话 视频事件。 然后，第一终端发送包括视频事件索引的数据分组，并且第二终端接收数据分组，并输出映射到预先存储的图像的视频事件索引的图像。 因此，通过在不将用户和终端状态作为实时数据型图像的情况下单独发送和接收预定索引，VoIP视频通信方法和装置可以防止视频通信中带宽的不必要浪费。

公开(公告)号：US20070097936A1

公开(公告)日：2007-05-03

申请号：US11477910

申请日：2006-06-30

申请人： Jae-Kil Lee ,  Seong-Joon Jeon ,  Jun-Hwa Seo ,  Myeon-Kee Youn

发明人： Jae-Kil Lee ,  Seong-Joon Jeon ,  Jun-Hwa Seo ,  Myeon-Kee Youn

IPC分类号： H04Q7/24

CPC分类号： H04W74/02 ,  H04W72/04

摘要： A broadband wireless access system including: a base station that allocates an uplink bandwidth to each connected subscriber station according to at least one algorithm; and at least one subscriber station that when there is no voice information to be sent through the uplink bandwidth allocated from the base station according to an unsolicited grant service (UGS) algorithm, detects another packet based on another algorithm, encapsulates the detected packet, and sends the encapsulated packet in a payload field of a UGS packet to the base station through the uplink bandwidth. Thus, the broadband wireless access system maximizes utilization of the bandwidth allocated according to the UGS algorithm.

摘要翻译： 一种宽带无线接入系统，包括：根据至少一种算法向每个连接的用户站分配上行链路带宽的基站; 以及至少一个用户站，当根据非请求授权服务（UGS）算法不存在从基站分配的上行链路带宽发送的语音信息时，基于另一种算法检测另一个分组，封装检测到的分组，以及 通过上行链路带宽将封装的数据包发送到基站的有效载荷字段。 因此，宽带无线接入系统最大限度地利用根据UGS算法分配的带宽。

公开(公告)号：US20060176802A1

公开(公告)日：2006-08-10

申请号：US11336949

申请日：2006-01-20

申请人： Seong-Yun Ko ,  Myeon-Kee Youn ,  Joo-Yong Park ,  Hak-Hoon Song

发明人： Seong-Yun Ko ,  Myeon-Kee Youn ,  Joo-Yong Park ,  Hak-Hoon Song

IPC分类号： H04J11/00

CPC分类号： H04L27/2657 ,  H04L27/2665 ,  H04L27/2675 ,  H04L27/2695

摘要： Disclosed is an apparatus and method for compensating for frequency offset in a wireless communication system using an OFDM system which can compensate for phase change due to carrier frequency offset and sampling frequency offset of data carried on subcarriers. The apparatus includes an FFT window adjustment unit for receiving sampling data when a packet is received, setting a start point of a FFT window at a start point of long training symbols and adjusting a position of the FFT window according to an input window adjustment value, an FFT unit for receiving an output of the FFT window adjustment unit, transforming time-domain symbols into frequency-domain symbols and calculating FFT coefficients, a channel estimation unit for receiving the coefficients from the FFT unit, estimating a channel state and outputting a value for compensating for an estimated value, a channel compensation unit for compensating for the frequency-domain symbols using the output of the channel estimation unit and a phase error tracking and correction unit for receiving an output of the channel compensation unit, detecting a sampling frequency offset and a phase change of a carrier signal and outputting the window adjustment value to the FFT window adjustment unit.

摘要翻译： 公开了一种用于补偿使用OFDM系统的无线通信系统中的频率偏移的装置和方法，所述OFDM系统可以补偿由于载波频率偏移引起的相位变化和在子载波上承载的数据的采样频率偏移。 该装置包括FFT窗口调整单元，用于当接收到分组时接收采样数据，在长训练符号的起始点处设置FFT窗口的起始点，并根据输入窗口调整值调整FFT窗口的位置， FFT单元，用于接收FFT窗口调整单元的输出，将时域符号变换为频域符号并计算FFT系数;信道估计单元，用于从FFT单元接收系数，估计信道状态并输出值 用于补偿估计值的信道补偿单元，用于使用信道估计单元的输出来补偿频域符号的信道补偿单元和用于接收信道补偿单元的输出的相位误差跟踪和校正单元，检测采样频率偏移 以及载波信号的相位变化，并将窗口调整值输出到FFT窗口调整单元。

公开(公告)号：US20060159072A1

公开(公告)日：2006-07-20

申请号：US11315185

申请日：2005-12-23

申请人： Taek-Ho Kim ,  Myeon-Kee Youn ,  Seong-Joon Jeon ,  Jin-Suk Lee ,  Kwang-Yong Choi ,  Jae-Kil Lee

发明人： Taek-Ho Kim ,  Myeon-Kee Youn ,  Seong-Joon Jeon ,  Jin-Suk Lee ,  Kwang-Yong Choi ,  Jae-Kil Lee

IPC分类号： H04L12/66

CPC分类号： H04L65/1006 ,  H04L29/06027

摘要： A method for exchanging media description information between user agents using a session initiation protocol (SIP) comprises the steps of: providing information on an OS and sound module of a first user agent so that the first user agent generates, in a media description field of a session description protocol (SDP), an SIP message including the information on the OS and sound module of the first user agent, and sends it to a second user agent; and setting a processing format for voice data of the second user agent so that the second user agent determines the voice data format supportable by the first user agent from the information on the OS and sound module of the first user agent, compares it with the voice data format supportable by the second user agent, and sets a format commonly supportable by the first and second user agents as the voice data format of the second user agent.

摘要翻译： 使用会话发起协议（SIP）在用户代理之间交换媒体描述信息的方法包括以下步骤：提供关于第一用户代理的OS和声音模块的信息，使得第一用户代理在媒体描述字段中生成 会话描述协议（SDP），包括OS的信息和第一用户代理的声音模块的SIP消息，并将其发送到第二用户代理; 并且设置第二用户代理的语音数据的处理格式，使得第二用户代理根据第一用户代理的OS和声音模块上的信息确定第一用户代理可支持的语音数据格式，将其与语音进行比较 由第二用户代理支持的数据格式，并且将由第一和第二用户代理通常可支持的格式设置为第二用户代理的语音数据格式。

公开(公告)号：US07746821B2

公开(公告)日：2010-06-29

申请号：US11477910

申请日：2006-06-30

申请人： Jae-Kil Lee ,  Seong-Joon Jeon ,  Jun-Hwa Seo ,  Myeon-Kee Youn

发明人： Jae-Kil Lee ,  Seong-Joon Jeon ,  Jun-Hwa Seo ,  Myeon-Kee Youn

IPC分类号： H04W4/00

CPC分类号： H04W74/02 ,  H04W72/04

摘要： A broadband wireless access system including: a base station that allocates an uplink bandwidth to each connected subscriber station according to at least one algorithm; and at least one subscriber station that when there is no voice information to be sent through the uplink bandwidth allocated from the base station according to an unsolicited grant service (UGS) algorithm, detects another packet based on another algorithm, encapsulates the detected packet, and sends the encapsulated packet in a payload field of a UGS packet to the base station through the uplink bandwidth. Thus, the broadband wireless access system maximizes utilization of the bandwidth allocated according to the UGS algorithm.

摘要翻译： 一种宽带无线接入系统，包括：根据至少一种算法向每个连接的用户站分配上行链路带宽的基站; 以及至少一个用户站，当根据非请求授权服务（UGS）算法不存在从基站分配的上行链路带宽发送的语音信息时，基于另一种算法检测另一个分组，封装检测到的分组，以及 通过上行链路带宽将封装的数据包发送到基站的有效载荷字段。 因此，宽带无线接入系统最大限度地利用根据UGS算法分配的带宽。

公开(公告)号：US20080171515A1

公开(公告)日：2008-07-17

申请号：US11972732

申请日：2008-01-11

申请人： Sung-Jun KIM ,  Myeon-Kee Youn ,  Seong-Kyu Song

发明人： Sung-Jun KIM ,  Myeon-Kee Youn ,  Seong-Kyu Song

IPC分类号： H04B17/00

CPC分类号： H04L27/0014 ,  H04L27/2657 ,  H04W56/0035

摘要： An apparatus and method for estimating frequency offset in a mobile terminal are provided. The method includes collecting information on the locations of a base station and the mobile terminal; calculating a moving speed of the mobile terminal using the collected location information; and estimating the frequency offset using the calculated moving speed.

摘要翻译： 提供了一种用于估计移动终端中的频率偏移的装置和方法。 该方法包括收集关于基站和移动终端的位置的信息; 使用所收集的位置信息计算移动终端的移动速度; 以及使用所计算的移动速度来估计频率偏移。

公开(公告)号：US20060174330A1

公开(公告)日：2006-08-03

申请号：US11305138

申请日：2005-12-19

申请人： Hyun-Min Yoon ,  Soung-Kwan Kim ,  Myeon-Kee Youn ,  Seong-Joon Jeon

发明人： Hyun-Min Yoon ,  Soung-Kwan Kim ,  Myeon-Kee Youn ,  Seong-Joon Jeon

IPC分类号： H04L9/32 ,  G06K9/00 ,  G06F17/30 ,  G06F15/16 ,  G06F7/04 ,  G06F7/58 ,  G06K19/00 ,  H04K1/00

CPC分类号： H04W12/06 ,  H04L63/10 ,  H04L63/205 ,  H04W48/16 ,  H04W84/12

摘要： A network access method of Wireless Local Area Network (WLAN) terminals and a network system thereof which are designed to support network association between a terminal and an Access Point (AP) in an IEEE 802.11 WLAN environment includes: scanning at least one AP in the network and determining whether or not the AP uses a Wired Equivalent Privacy (WEP) Key; and converting to an Open System authentication mode or a Shared Key authentication mode according to the determination. Accordingly, the terminal can scan for the existence of a WEP Key from at least one AP and convert into a network-accessible Open System authentication mode and a Shared Key authentication mode so as to execute an association.

公开(公告)号：US20060154699A1

公开(公告)日：2006-07-13

申请号：US11315181

申请日：2005-12-23

申请人： Seong-Yun Ko ,  Joo-Yong Park ,  Seong-Joon Jeon ,  Myeon-Kee Youn

发明人： Seong-Yun Ko ,  Joo-Yong Park ,  Seong-Joon Jeon ,  Myeon-Kee Youn

IPC分类号： H04B1/38

CPC分类号： H04W52/028 ,  H04W60/00 ,  H04W88/06 ,  Y02D70/1222 ,  Y02D70/142 ,  Y02D70/23

摘要： A method and apparatus save power in a multimode wireless terminal having plural communication modems for supporting different communication systems. The multimode wireless terminal performs its basic functions of reception and transmission, while only one of the communication modems is turned on and the others are turned off so as to reduce power consumption. This results in extension of the utilization time of the multimode wireless terminal.

公开(公告)号：US20050025131A1

公开(公告)日：2005-02-03

申请号：US10891330

申请日：2004-07-15

申请人： Seong-Yun Ko ,  Joo-Yong Park ,  Seong-Joon Jeon ,  Myeon-Kee Youn ,  Soung-Kwan Kim

发明人： Seong-Yun Ko ,  Joo-Yong Park ,  Seong-Joon Jeon ,  Myeon-Kee Youn ,  Soung-Kwan Kim

IPC分类号： H04L12/28 ,  H04L12/413 ,  H04L12/66

CPC分类号： H04W74/0816

摘要： A medium access control method of a CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) based wireless LAN (Local Area Network) provides contention-free medium access authority to a station or access point receiving a request signal by: transmitting a request signal frame from an arbitrary station to another arbitrary station or to an access point via a medium occupied in transmission contention with a CSMA/CA algorithm using a DCF (Distributed Coordination Function) interframe space; and transmitting an acknowledgment signal frame from the station or the access point receiving the request signal frame to the station transmitting the request signal frame via an occupied medium using a short interframe space.

摘要翻译： 基于无线LAN（局域网）的CSMA / CA（具有冲突避免的载波侦听多路访问）的介质访问控制方法通过以下方式向站或接入点提供无争用的媒体访问权限：发送请求信号 通过使用DCF（分布式协调功能）帧间间隔的CSMA / CA算法通过传输争用占据的介质从任意站到另一个任意站或接入点的帧; 以及从接收到所述请求信号帧的所述接收点的所述接收点向使用短帧间间隔的被占用介质发送所述请求信号帧的所述站发送确认信号帧。