公开(公告)号：US07428288B2

公开(公告)日：2008-09-23

申请号：US10681951

申请日：2003-10-09

申请人： Yong-Deok Kim ,  Jun-Ho Koh ,  Sang-Ho Kim ,  Kyu-Hyung Cho ,  Yun-Je Oh

发明人： Yong-Deok Kim ,  Jun-Ho Koh ,  Sang-Ho Kim ,  Kyu-Hyung Cho ,  Yun-Je Oh

IPC分类号： H04L25/10

CPC分类号： H04N21/4305 ,  H04N21/42607

摘要： An asynchronous transport stream receiver of a digital broadcasting receiving system connected to MPEG-2 (Moving Picture Experts Group-2) equipment, such as a VOD (Video On Demand) server is disclosed. The inventive receiver includes an FIFO section for storing MPEG-2 data generated from DVB-ASI (Digital Video Broadcasting Asynchronous Serial Interface) signals, an oscillator for generating clock signals for producing the MPEG-2 data from the DVB-ASI signals, and a read controller for reading and outputting the MPEG-2 data stored at the FIFO section in synchronization with clock signals of the oscillator. Accordingly, the MPEG-2 data can be processed and outputted regardless of the SD or HD leveled compression condition (bit rate) of the MPEG-2 data transmitted according to the DVB-ASI standard.

摘要翻译： 公开了连接到诸如VOD（视频点播）服务器的MPEG-2（运动图像专家组-2）设备的数字广播接收系统的异步传输流接收器。 本发明的接收机包括用于存储从DVB-ASI（数字视频广播异步串行接口）信号产生的MPEG-2数据的FIFO部分，用于产生用于从DVB-ASI信号产生MPEG-2数据的时钟信号的振荡器，以及 读取控制器，与振荡器的时钟信号同步地读出并输出存储在FIFO部分的MPEG-2数据。 因此，无论根据DVB-ASI标准发送的MPEG-2数据的SD或HD等级压缩条件（比特率）如何，都可以处理和输出MPEG-2数据。

公开(公告)号：US20050152372A1

公开(公告)日：2005-07-14

申请号：US10991182

申请日：2004-11-17

申请人： Sang-Ho Kim ,  Yong-Deok Kim ,  Yun-Je Oh ,  Jun-Ho Koh ,  Kyu-Hyung Cho

发明人： Sang-Ho Kim ,  Yong-Deok Kim ,  Yun-Je Oh ,  Jun-Ho Koh ,  Kyu-Hyung Cho

IPC分类号： H04L12/00 ,  H04L12/28 ,  H04L29/06 ,  H04N7/16 ,  H04N21/235 ,  H04N21/236 ,  H04N21/434

CPC分类号： H04L12/5601

摘要： A system for performing transmission and reception operations based on broadcast/communication convergence. A transmitter adapted for the broadcast/communication convergence converts input broadcast data into a parallel format, inserts port identification (Port ID) information into each of the broadcast data converted into the parallel format and input communication data, multiplexes the broadcast data and the communication data, and transmits a broadcast/communication convergence signal based on a result of the multiplexing through a single transmission channel. A receiver adapted for the broadcast/communication convergence demultiplexes the broadcast/communication convergence signal using the Port ID information to be separated into the broadcast data and the communication data when the broadcast/communication convergence signal is received, and outputs data to a corresponding destination.

摘要翻译： 一种用于基于广播/通信融合执行发送和接收操作的系统。 适用于广播/通信融合的发射机将输入广播数据转换为并行格式，将端口识别（Port ID）信息插入转换成并行格式的每个广播数据并输入通信数据，复用广播数据和通信数据 ，并且通过单个传输信道基于多路复用的结果发送广播/通信会聚信号。 适于广播/通信收敛的接收机在接收到广播/通信收敛信号时，使用要分离成广播数据和通信数据的端口ID信息来解复用广播/通信收敛信号，并将数据输出到相应的目的地。

公开(公告)号：US07382784B2

公开(公告)日：2008-06-03

申请号：US10682155

申请日：2003-10-09

申请人： Kyu-Hyung Cho ,  Yong-Deok Kim ,  Sang-Ho Kim ,  Jun-Ho Koh

发明人： Kyu-Hyung Cho ,  Yong-Deok Kim ,  Sang-Ho Kim ,  Jun-Ho Koh

IPC分类号： H04L12/28

CPC分类号： H04H20/69 ,  H04L12/5601 ,  H04L2012/5605 ,  H04L2012/5642 ,  H04L2012/5651 ,  H04N7/22

摘要： An optical transmission network is disclosed that classifies digital broadcast channel data according to virtual channel connection (VCC) before transmission. In the optical transmission network, an optical signal receiver converts an optical signal from an optical line terminal (OLT) into an ATM cell that is classified according to the VCC. A VCC-based ATM cell classifier detects header information and a payload part from the classified ATM cell of each VCC. PID analyzers receive a payload part of an ATM cell corresponding to one VCC from the VCC-based ATM cell classifier, extract PID of each broadcast channel from digital broadcast channel data included in the payload part, and output specific broadcast channel data in the broadcast channel data included in the payload part. A switch receives broadcast channel data output from the PID analyzers and switches the received broadcast channel data to a broadcast channel desired by each subscriber. The controller updates broadcast channel information by receiving header information of the classified ATM cell of each VCC from the VCC-based ATM cell classifier, receives the broadcast channel desired by the subscriber, and controls the PID analyzers to output the desired broadcast channel according to VCC information with the desired broadcast channel included therein so that the output broadcast channel is matched to the subscriber.

摘要翻译： 公开了一种光传输网络，其在传输之前根据虚拟信道连接（VCC）对数字广播信道数据进行分类。 在光传输网络中，光信号接收机将来自光线路终端（OLT）的光信号转换为根据VCC分类的ATM信元。 基于VCC的ATM信元分类器从每个VCC分类的ATM信元检测报头信息和净荷部分。 PID分析器从基于VCC的ATM信元分类器接收对应于一个VCC的ATM信元的有效载荷部分，从包括在有效载荷部分中的数字广播信道数据中提取每个广播信道的PID，并且在广播信道中输出特定的广播信道数据 有效载荷部分中包含的数据。 交换机接收从PID分析器输出的广播信道数据，并将接收到的广播信道数据切换到每个用户期望的广播信道。 控制器通过从基于VCC的ATM信元分类器接收每个VCC的分类的ATM信元的报头信息来更新广播信道信息，接收用户期望的广播信道，并且控制PID分析器根据VCC输出所需的广播信道 具有包含在其中的所需广播频道的信息，使得输出广播频道与用户匹配。

公开(公告)号：US07652996B2

公开(公告)日：2010-01-26

申请号：US10862303

申请日：2004-06-07

申请人： Sang-Ho Kim ,  Jae-Hun Cho ,  Kyu-Hyung Cho ,  Yun-Je Oh

发明人： Sang-Ho Kim ,  Jae-Hun Cho ,  Kyu-Hyung Cho ,  Yun-Je Oh

IPC分类号： G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26

CPC分类号： H04N21/23406 ,  H04N21/23608

摘要： An apparatus and a method for adjusting a transmission rate of data, in particular a moving picture experts group 2 (MPEG-2) data is disclosed The apparatus includes a receiving buffer for buffering multi program transport stream (MPTS) packets received at various transmission rates, and a packet storage for storing MPEG-2 null packets. A signal processing section reads data buffered in the receiving buffer at a predetermined output transmission rate, wherein the signal processing section stops an operation of reading data buffered in the receiving buffer, and reads and transmits the MPEG-2 null packets stored in the packet storage when a predetermined underflow occurrence forecast situation is caused in the receiving buffer.

摘要翻译： 公开了一种用于调整数据传输速率的装置和方法，特别是运动图像专家组2（MPEG-2）数据。该装置包括：接收缓冲器，用于缓冲以各种传输速率接收的多节目传输流（MPTS） 以及用于存储MPEG-2空分组的分组存储器。 信号处理部分以预定的输出传输速率读取在接收缓冲器中缓冲的数据，其中信号处理部分停止读取在接收缓冲器中缓冲的数据的操作，并且读取并发送存储在分组存储器中的MPEG-2空分组 当在接收缓冲器中引起预定的下溢发生预测情况时。

公开(公告)号：US20050169181A1

公开(公告)日：2005-08-04

申请号：US10862303

申请日：2004-06-07

申请人： Sang-Ho Kim ,  Jae-Hun Cho ,  Kyu-Hyung Cho ,  Yun-Je Oh

发明人： Sang-Ho Kim ,  Jae-Hun Cho ,  Kyu-Hyung Cho ,  Yun-Je Oh

IPC分类号： H04L12/70 ,  H04L12/853 ,  H04N7/12 ,  H04N7/173 ,  H04N19/00 ,  H04N19/102 ,  H04N19/152 ,  H04N19/423 ,  H04N19/70 ,  H04N21/238 ,  H04N21/24 ,  H04L12/26

CPC分类号： H04N21/23406 ,  H04N21/23608

摘要： An apparatus and a method for adjusting a transmission rate of data, in particular a moving picture experts group 2 (MPEG-2) data. The apparatus includes a receiving buffer for buffering multi program transport stream (MPTS) packets received at various transmission rates, and a packet storage for storing MPEG-2 null packets. A signal processing section reads data buffered in the receiving buffer at a predetermined output transmission rate, wherein the signal processing section stops an operation of reading data buffered in the receiving buffer, and reads and transmits the MPEG-2 null packets stored in the packet storage when a predetermined underflow occurrence forecast situation is caused in the receiving buffer. In addition, the method for adjusting a transmission rate of MPEG-2 data includes: reading and transmitting buffered data when a current buffered data point (CF) reaches a predetermined data output point (HF) in a receiving buffer which receives the input MPST packets, stopping the reading of data buffered in the receiving buffer and transmitting MPEG-2 null packets when the current buffered data point ( CF) reaches a predetermined underflow forecast point (QF) in the process of reading the buffered data; and reading and transmitting buffered data when the current buffered data point (CF) reaches the data output point (HF) in the process of transmitting the null packets.

摘要翻译： 一种用于调整数据传输速率，特别是运动图像专家组2（MPEG-2）数据的装置和方法。 该装置包括用于缓冲以各种传输速率接收的多节目传输流（MPTS）分组的接收缓冲器和用于存储MPEG-2空分组的分组存储器。 信号处理部分以预定的输出传输速率读取在接收缓冲器中缓冲的数据，其中信号处理部分停止读取在接收缓冲器中缓冲的数据的操作，并且读取并发送存储在分组存储器中的MPEG-2空分组 当在接收缓冲器中引起预定的下溢发生预测情况时。 此外，用于调整MPEG-2数据的传输速率的方法包括：当当前缓冲数据点（CF）达到接收输入MPST分组的接收缓冲器中的预定数据输出点（HF）时，读取和发送缓冲数据 在读取缓冲数据的过程中，当当前缓冲数据点（CF）达到预定下溢预测点（QF）时，停止读取缓冲在接收缓冲器中的数据并发送MPEG-2空分组; 以及在发送空分组的过程中当当前缓冲数据点（CF）到达数据输出点（HF）时读取和发送缓冲数据。

公开(公告)号：US07450859B2

公开(公告)日：2008-11-11

申请号：US10783804

申请日：2004-02-20

申请人： Young-Hun Joo ,  Chan-Yul Kim ,  Jun-Ho Koh ,  Kyu-Hyung Cho

发明人： Young-Hun Joo ,  Chan-Yul Kim ,  Jun-Ho Koh ,  Kyu-Hyung Cho

IPC分类号： H04J14/02

CPC分类号： H04J14/0226 ,  H04J14/0232 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282

摘要： An optical subscriber network system is disclosed, which comprises: a server bi-directional optical transmitter including a multiplexer to multiplexes communication data and broadcast data, a server laser diode to converts the multiplexed data into an optical signal, and a server photo diode receive communication data from a subscriber, wherein the server bi-directional optical transmitter transmits the upstream communication data; and a subscriber bi-directional optical receiver including a subscriber laser diode to transmit upstream communication data, a subscriber photo diode to receive the optical signal transmitted from the server bi-directional optical transmitter, and a demultiplexer to demultiplex and divide the multiplexed signal into communication data and broadcast data. In the optical subscriber network system, the optical transmitter and the optical receiver can transceive image signals and Ethernet communication signals in a two-way direction by means of a single laser diode and photo diode.

摘要翻译： 公开了一种光用户网络系统，其包括：服务器双向光发射机，包括多路复用器，用于复用通信数据和广播数据;服务器激光二极管，用于将多路复用数据转换为光信号;以及服务器光电二极管接收通信 来自用户的数据，其中服务器双向光发射机发送上行通信数据; 以及包括用户激光二极管以发送上行通信数据的订户双向光接收机，用于接收从服务器双向光发射机发送的光信号的用户光二极管，以及解复用器，以将多路复用信号解复用并分成通信 数据和广播数据。 在光用户网络系统中，光发射机和光接收机可以通过单个激光二极管和光电二极管双向传输图像信号和以太网通信信号。

公开(公告)号：US20050047790A1

公开(公告)日：2005-03-03

申请号：US10783804

申请日：2004-02-20

申请人： Young-Hun Joo ,  Chan-Yul Kim ,  Jun-Ho Koh ,  Kyu-Hyung Cho

发明人： Young-Hun Joo ,  Chan-Yul Kim ,  Jun-Ho Koh ,  Kyu-Hyung Cho

IPC分类号： H04J3/00 ,  H04B10/00 ,  H04B10/27 ,  H04J14/02 ,  H04J14/08 ,  H04L12/18 ,  H04L12/44 ,  H04Q11/00

CPC分类号： H04J14/0226 ,  H04J14/0232 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282

摘要： An optical subscriber network system is disclosed, which comprises: a server bi-directional optical transmitter including a multiplexer to multiplexes communication data and broadcast data, a server laser diode to converts the multiplexed data into an optical signal, and a server photo diode receive communication data from a subscriber, wherein the server bi-directional optical transmitter transmits the upstream communication data; and a subscriber bi-directional optical receiver including a subscriber laser diode to transmit upstream communication data, a subscriber photo diode to receive the optical signal transmitted from the server bi-directional optical transmitter, and a demultiplexer to demultiplex and divide the multiplexed signal into communication data and broadcast data. In the optical subscriber network system, the optical transmitter and the optical receiver can transceive image signals and Ethernet communication signals in a two-way direction by means of a single laser diode and photo diode.

摘要翻译： 公开了一种光用户网络系统，其包括：服务器双向光发射机，包括多路复用器，用于复用通信数据和广播数据;服务器激光二极管，用于将多路复用数据转换为光信号;以及服务器光电二极管接收通信 来自用户的数据，其中服务器双向光发射机发送上行通信数据; 以及包括用户激光二极管以发送上行通信数据的订户双向光接收机，用于接收从服务器双向光发射机发送的光信号的用户光二极管，以及解复用器，以将多路复用信号解复用并分成通信 数据和广播数据。 在光用户网络系统中，光发射机和光接收机可以通过单个激光二极管和光电二极管双向传输图像信号和以太网通信信号。

公开(公告)号：US20100313241A1

公开(公告)日：2010-12-09

申请号：US12793314

申请日：2010-06-03

申请人： Sang-Mook Lee ,  Seong-Woon Kang ,  Jong-Hoon Lim ,  Kyu-Hyung Cho ,  Joon-Oo Kim

发明人： Sang-Mook Lee ,  Seong-Woon Kang ,  Jong-Hoon Lim ,  Kyu-Hyung Cho ,  Joon-Oo Kim

IPC分类号： G06F15/16

CPC分类号： G06F15/16 ,  H04W12/00503 ,  H04W12/06 ,  H04W84/12 ,  H04W88/08

摘要： An authentication system and method in a wireless LAN (WLAN) environment. A terminal transmits an access authentication request to an access point of a WLAN which the terminal desires to access, and transmits its own transmission power information to the access point when receiving a response to the access authentication request from the access point, and the access point measures received signal strength, calculates a path loss value through the use of the received transmission power and the measured received signal strength, and performs access authentication of the terminal according to the calculated path loss value, so that a new terminal can easily access the WLAN where security has been set up.

摘要翻译： 无线局域网（WLAN）环境中的认证系统和方法。 终端向终端希望接入的WLAN的接入点发送接入认证请求，并且从接入点接收到对接入认证请求的响应时，向接入点发送其自己的发送功率信息，接入点 测量接收到的信号强度，通过使用接收到的发送功率和测量的接收信号强度来计算路径损耗值，并根据计算出的路径损耗值进行终端的接入认证，使得新终端可以容易地接入WLAN 安全性已经建立。