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：US07289732B2

公开(公告)日：2007-10-30

申请号：US10621588

申请日：2003-07-17

申请人： Jun-Ho Koh ,  Kyong-Joon Chun ,  Byung-Chang Kang ,  Yun-Je Oh

发明人： Jun-Ho Koh ,  Kyong-Joon Chun ,  Byung-Chang Kang ,  Yun-Je Oh

IPC分类号： H04J14/00

CPC分类号： H04Q11/0067 ,  H04B10/272 ,  H04J14/02 ,  H04Q11/0066 ,  H04Q11/0071

摘要： Disclosed is a broadcast/communication unified passive optical network system. The network system comprises: an optical line termination that time-division multiplexes the received digital broadcast signals, receives communication signals through the internet, and wavelength-division multiplexes and transmits the broadcast signals and the communication signals; a plurality of optical network units connected to the optical line termination in one-to-multi connection, each optical network unit receiving the broadcast signals and the communication signals from the optical line termination, time-division demultiplexing the broadcast signals, and sending the broadcast signals selected from the above broadcast signals in accordance with a subscriber control signal and the communicating signals; and, a plurality of setup boxes connected to the each optical network unit in one-to-multi connection, each setup box receiving the broadcast signals and communication signals from each corresponding optical network unit and sending the subscriber control signal inputted by a subscriber to the corresponding optical network unit.

摘要翻译： 公开了广播/通信统一的无源光网络系统。 网络系统包括：时分复用接收到的数字广播信号，通过因特网接收通信信号的光线路终端，以及波分复用并发送广播信号和通信信号; 多个光网络单元，以一对多连接方式连接到光线路终端，每个光网络单元从光线路终端接收广播信号和通信信号，对广播信号进行时分解复用，并发送广播 根据用户控制信号和通信信号从上述广播信号中选择的信号; 以及多个连接到每个光网络单元的设置盒，每个设置盒从每个对应的光网络单元接收广播信号和通信信号，并将用户输入的用户控制信号发送给 相应的光网络单元。

公开(公告)号：US07254338B2

公开(公告)日：2007-08-07

申请号：US10771793

申请日：2004-02-04

申请人： Jong-Kwon Kim ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Jong-Kwon Kim ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： H04J14/02

CPC分类号： H04J14/02 ,  H04B10/506 ,  H04J14/0221

摘要： A multi-wavelength light source unit for optical communication system is disclosed. The light source includes a demultiplexer for demultiplexing a multiplexed light signal into a plurality of lights having different wavelengths and a multiplexer that receives the demultiplexed lights and multiplexes the demultiplexed lights into the multiplexed light signal. Input ports of the multiplexer are respectively port-to-port connectable to each one of a plurality of output ports of the demultiplexer. The light source unit includes a plurality of semiconductor optical amplifiers amplifying the demultiplexed lights output form the demultiplexer, and a plurality of beam splitters for splitting the amplified demultiplexed lights into two parts, so as to provide the respective input ports of the multiplexer with a split part of the lights, while to transmit the other part of the lights out of the beam splitters.

摘要翻译： 公开了一种用于光通信系统的多波长光源单元。 光源包括用于将复用的光信号解复用为具有不同波长的多个光的解复用器，以及接收解复用的光并将解复用的光复用到复用的光信号中的多路复用器。 多路复用器的输入端口分别是可连接到解复用器的多个输出端口中的每一个的端口到端口。 光源单元包括放大从解复用器输出的解复用光的多个半导体光放大器和用于将放大的解复用光分成两部分的多个分束器，以便将多路复用器的相应输入端口分配 部分灯光，同时将其他部分的光线从光束分离器传出。

公开(公告)号：US07239808B2

公开(公告)日：2007-07-03

申请号：US10776726

申请日：2004-02-11

申请人： Ki-Cheol Lee ,  Chang-Dong Kim ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Ki-Cheol Lee ,  Chang-Dong Kim ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： H04J14/00

CPC分类号： H04H20/69 ,  H04J14/0226 ,  H04J14/0232 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/0298

摘要： A subscriber interface device and method for transmitting a communication signal and a broadcasting signal to each subscriber in a communication-broadcasting convergence FTTH system. A subscriber interface, positioned in the ONU, modulates a first predetermined number of broadcasting signals selected by a subscriber among broadcasting signals received from an OLT, combines a baseband communication signal received from the OLT with the modulated broadcasting signals, and optically transmits the combined communication-broadcasting signal. A subscriber interface receiver positioned in an ONT, splits the combined communication-broadcasting signal, filters the split signals to respective frequency bands, modulates the filtered broadcasting signals, transmits the modulated broadcasting signals to a monitor of the subscriber, and transmits the filtered communication signal as a baseband signal to a communication terminal of the subscriber instead of a passband signal.

摘要翻译： 一种用于在通信广播收敛FTTH系统中向每个用户发送通信信号和广播信号的用户接口设备和方法。 定位在ONU中的订户接口在从OLT接收的广播信号中调制由用户选择的第一预定数量的广播信号，将从OLT接收的基带通信信号与已调制广播信号组合，并光学地发送组合通信 广播信号。 定位在ONT中的用户接口接收机，分离组合的通信广播信号，将分离的信号滤波到相应的频带，调制滤波的广播信号，将调制后的广播信号发送给用户的监视器，并发送经滤波的通信信号 作为到用户的通信终端的基带信号，而不是通带信号。

公开(公告)号：US07130543B2

公开(公告)日：2006-10-31

申请号：US10043617

申请日：2002-01-10

申请人： Kyu-Hyoung Cho ,  Yun-Je Oh ,  Jun-Ho Koh ,  Byung-Jik Kim ,  Chan-Youl Kim ,  Chang-Hyun Lee

发明人： Kyu-Hyoung Cho ,  Yun-Je Oh ,  Jun-Ho Koh ,  Byung-Jik Kim ,  Chan-Youl Kim ,  Chang-Hyun Lee

IPC分类号： H04B10/00

CPC分类号： H04B10/6932

摘要： A bit rate-independent optical receiver ensures transparency with respect to changes of the transmission format and its associated bit rate in relation to an optical communications system. The optical receiver includes an opto-electric converter for converting an input optical signal into an electric signal, an amplifier circuit for amplifying the electrical signal, a bit rate-sensing circuit for generating a sensing signal with a voltage level determined on the basis of the bit rate of the electrical signal, a bit rate-recognition circuit for generating a recognition signal further amplified from the sensing signal, and a clock/data recovery circuit for reproducing a clock signal and data from the amplified electrical signal in accordance with a control signal. A controller determines a bit rate corresponding to the voltage level of the recognition signal by referring to a look-up table of the bit rate to the voltage level and provides the clock/data recovery circuit with the control signal representative of the bit rate.

公开(公告)号：US20060224737A1

公开(公告)日：2006-10-05

申请号：US11374795

申请日：2006-03-14

申请人： Jae-Hun Cho ,  Jong-Ho Yoon ,  Sang-Ho Kim ,  Sihai Wang ,  Yun-Je Oh ,  Jun-Ho Koh ,  Hee-Kyung Choi

发明人： Jae-Hun Cho ,  Jong-Ho Yoon ,  Sang-Ho Kim ,  Sihai Wang ,  Yun-Je Oh ,  Jun-Ho Koh ,  Hee-Kyung Choi

IPC分类号： G06F15/173

CPC分类号： H04L49/351 ,  H04L49/25 ,  H04L49/3018

摘要： Disclosed is a method for forming a super frame used for transmitting isochronous data and asynchronous data in a residential Ethernet system. The method includes the steps of receiving the isochronous data and the asynchronous data to be transmitted through the residential Ethernet system, forming an isochronous frame using the received isochronous data, forming a cycle start frame used for reporting start of the super frame, and inserting the asynchronous data into an area of an asynchronous frame by employing a remaining area as the area of the asynchronous frame, the remaining area being obtained by excluding an isochronous frame area, which includes the cycle start frame and the isochronous frame, from an area having the predetermined size.

摘要翻译： 公开了一种用于形成用于在住宅以太网系统中传输等时数据和异步数据的超帧的方法。 该方法包括以下步骤：接收通过住宅以太网系统发送的等时数据和异步数据，使用所接收的同步数据形成同步帧，形成用于报告超帧开始的周期起始帧， 通过使用剩余区域作为异步帧的区域，异步数据进入异步帧的区域，剩余区域是通过从包括循环起始帧和同步帧的区域排除包括循环起始帧和等时帧的等时帧区域而获得的， 预定尺寸。

公开(公告)号：US20060221994A1

公开(公告)日：2006-10-05

申请号：US11395492

申请日：2006-03-31

申请人： Jae-Hun Cho ,  Jong-Ho Yoon ,  Sang-Ho Kim ,  Kwan-Soo Lee ,  Yun-Je Oh ,  Jun-Ho Koh ,  Hye-Jin Nam

发明人： Jae-Hun Cho ,  Jong-Ho Yoon ,  Sang-Ho Kim ,  Kwan-Soo Lee ,  Yun-Je Oh ,  Jun-Ho Koh ,  Hye-Jin Nam

IPC分类号： H04L12/43

CPC分类号： H04L12/413 ,  H04L12/403

摘要： A method for allocating slots for a synchronous Ethernet service in a Residential Ethernet system includes the steps of: receiving requests for synchronous Ethernet services from terminals requiring the synchronous Ethernet services; calculating a number of slots for each synchronous Ethernet service, and allocating slots for each terminal based on the calculated number of slots; transmitting information about the allocated slots through at least one Residential Ethernet switch; and receiving acknowledgement signals from the terminals in response to the allocated slot information and providing the synchronous Ethernet services using the allocated slots.

摘要翻译： 一种用于在住宅以太网系统中为同步以太网服务分配时隙的方法包括以下步骤：从需要同步以太网业务的终端接收对同步以太网业务的请求; 计算每个同步以太网业务的时隙数量，以及基于所计算的时隙数量为每个终端分配时隙; 通过至少一个住宅以太网交换机发送关于所分配的时隙的信息; 以及响应于所分配的时隙信息从终端接收确认信号，并使用所分配的时隙提供同步以太网业务。

公开(公告)号：US20060168323A1

公开(公告)日：2006-07-27

申请号：US11179855

申请日：2005-07-12

申请人： Chan-Yul Kim ,  Sung-Jin Park ,  Chang-Sup Shim ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Chan-Yul Kim ,  Sung-Jin Park ,  Chang-Sup Shim ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： G06F15/173

CPC分类号： H04L29/06027 ,  H04L65/605 ,  H04L65/607

摘要： Disclosed is a transcoding method and apparatus for a mobile communication system provided with a transcoder. The transcoding method includes receiving a request for media content and codec information required for the requested media content, receiving the requested media content from a media content server and determining whether the received codec information exists, transformatting a format of the received media content by a codec of the codec information if the received codec information exists, searching the codec list and installing the codec information and transformatting the format of the received media content using the installed codec, determining whether a transmission bandwidth through which the transformatted media content are transmitted is smaller than a bandwidth of the transformatting codec, transrating the format of the media content by a codec suitable for the transmission bandwidth if the transmission bandwidth is smaller than the bandwidth of the transformatting codec, and transmitting the transrated media content.

摘要翻译： 公开了一种具有代码转换器的移动通信系统的代码转换方法和装置。 代码转换方法包括接收对所请求的媒体内容所需的媒体内容和编解码器信息的请求，从媒体内容服务器接收所请求的媒体内容，并确定是否存在所接收的编解码器信息，通过编解码器转换所接收的媒体内容的格式 如果接收到的编解码信息存在，搜索编解码器列表并安装编解码器信息并使用安装的编解码器对接收到的媒体内容的格式进行变换，确定发送转换的媒体内容的传输带宽是否小于 变换编解码器的带宽，如果传输带宽小于转换编解码器的带宽，则通过适用于传输带宽的编解码器来转换媒体内容的格式，以及传输转换的媒体内容。

公开(公告)号：US07081989B2

公开(公告)日：2006-07-25

申请号：US10688560

申请日：2003-10-17

申请人： Kwan-Woong Song ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Kwan-Woong Song ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H04B10/12 ,  H01S4/00

CPC分类号： H01S3/094003 ,  H01S3/06754 ,  H01S3/094023 ,  H01S3/2383

摘要： Disclosed is a wide-band fiber amplifier for amplifying C-band and L-band optical signals, including a first amplifying unit including a first amplifying fiber adapted to be (1) pumped in at least one direction (2) amplify both the C-band and L-band optical signals and (3) output Amplified Spontaneous Emission (ASE), a second amplifying unit including a second amplifying fiber adapted to be pumped by amplified ASE and secondarily amplify the amplified L-band optical signal, and an L-band pumping light source including a third amplifying fiber adapted to be pumped in at least one direction while being pumped by the ASE, and output amplified ASE used to pump the second amplifying fiber.

摘要翻译： 公开了一种用于放大C波段和L波段光信号的宽带光纤放大器，包括第一放大单元，该第一放大单元包括第一放大光纤，该第一放大单元适于（1）在至少一个方向上泵浦（2） 频带和L波段光信号，以及（3）输出放大自发辐射（ASE），第二放大单元，包括适于被放大的ASE泵浦的第二放大光纤，并且二次放大放大的L波段光信号， 带泵浦光源，包括适于在被ASE泵浦的同时被泵浦至少一个方向的第三放大光纤，以及用于泵浦第二放大光纤的输出放大的ASE。

公开(公告)号：US20060120383A1

公开(公告)日：2006-06-08

申请号：US11296618

申请日：2005-12-07

申请人： Sang-Ho Kim ,  Jae-Hun Cho ,  Chang-Sup Shim ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Sang-Ho Kim ,  Jae-Hun Cho ,  Chang-Sup Shim ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： H04L12/56 ,  H04L12/28

CPC分类号： H04N21/4305

摘要： A method and apparatus by which a reception device of a communication system can sense and compensate for an error of a program clock reference (PCR), and can sense and compensate for bit rate variation of transmission data in a transmitted MPEG-2 TS. The method and apparatus compensates for a PCR jitter, or a change in a data bit rate, which may occur in processing an MPEG-2 TS in a reception device of the MPEG-2 TS transmission system, thereby preventing the deterioration of image quality due to the jitter or loss of an input MPEG-2 TS data. The apparatus includes a PAT sensing unit for sensing a PAT from a received MPEG-2 TS, a PMT sensing unit for sensing a PMT based on information provided from the PAT sensing unit, a PCR PID unit for sensing a PCR PID based on information provided from the PMT sensing unit and a PCR data unit for outputting a PCR data based on information provided from the PMT sensing unit and PID information provided from the PCR PID unit. The apparatus also includes a PCR comparison/compensation unit receiving the PCR data from the PCR data unit, comparing the received PCR data with a pre-stored PCR data, and compensating for the pre-stored PCR data, and a data rate comparison/compensation unit for receiving data rate information from the PCR data unit, comparing the received data rate with a pre-stored data rate, and compensating for the pre-stored data rate.

摘要翻译： 通信系统的接收装置可以感测和补偿程序时钟参考（PCR）的错误的方法和装置，并且可以感测和补偿所发送的MPEG-2TS中的传输数据的比特率变化。 所述方法和装置补偿在MPEG-2 TS传输系统的接收装置中处理MPEG-2 TS时可能发生的PCR抖动或数据比特率的变化，从而防止由于MPEG-2 TS传输系统的接收装置的劣化 输入MPEG-2 TS数据的抖动或丢失。 该装置包括用于从接收的MPEG-2 TS感测PAT的PAT感测单元，用于基于从PAT感测单元提供的信息来感测PMT的PMT感测单元，用于基于提供的信息感测PCR PID的PCR PID单元 来自PMT感测单元和PCR数据单元，用于基于从PMT感测单元提供的信息和从PCR PID单元提供的PID信息输出PCR数据。 该装置还包括PCR比较/补偿单元，从PCR数据单元接收PCR数据，将接收的PCR数据与预先存储的PCR数据进行比较，并补偿预存的PCR数据，以及数据比率比较/补偿 单元，用于从PCR数据单元接收数据速率信息，将接收到的数据速率与预先存储的数据速率进行比较，并补偿预存的数据速率。