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。

公开(公告)号：US07039327B2

公开(公告)日：2006-05-02

申请号：US09945895

申请日：2001-09-04

申请人： Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Jun-Ho Koh

发明人： Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Jun-Ho Koh

IPC分类号： H04B10/00 ,  H04B10/06 ,  H03K11/00 ,  H04L25/60 ,  H04L25/64

CPC分类号： H04B10/6932 ,  H04Q11/0003 ,  H04Q2011/0043 ,  H04Q2011/0049

摘要： Disclosed is a self-healing apparatus and method of an optical receiver that is capable of avoiding error due to temperature variation in the optical receiver when determining the bit rate. The apparatus includes an optoelectric converting unit for converting an input optical signal into an electrical signal; an amplifying unit for amplifying the electrical signal outputted from the optoelectric converting unit; a bit rate discriminating unit for exclusively OR'ing the electrical signal with a delay signal that is delayed from the amplified receiving signal by a predetermined time, thereby outputting a recognition signal; a clock/data reproducing unit for receiving the electrical signal, and for reproducing clocks and data based on a reference clock; a bit rate signal generating unit for generating the reference clock in response to a bit rate change signal; a temperature sensing unit for outputting a temperature sensing signal that is indicative of the internal temperature of the optical receiver; and, a control unit for determining the bit rate of the receiving signal based on a value selected from temperature-dependent voltage level variation values that are previously stored, on the basis of the voltage level of the recognition signal outputted from the bit rate discriminating unit and the internal temperature of the optical receiver corresponding to the temperature sensing signal, and for outputting the bit rate change signal based on the determined bit rate.

公开(公告)号：US20060039357A1

公开(公告)日：2006-02-23

申请号：US11190416

申请日：2005-07-27

申请人： Han-Sang Kim ,  Chan-Yul Kim ,  Jun-Ho Koh ,  Yun-Je Oh

发明人： Han-Sang Kim ,  Chan-Yul Kim ,  Jun-Ho Koh ,  Yun-Je Oh

IPC分类号： H04L12/66 ,  H04L12/56 ,  H04J3/04

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

摘要： An optical communication system for transmitting telephone voice data to a subscriber terminal using an optical line is disclosed. The system includes an OLT (Optical Line Terminal) multiplexing the telephone voice data together with the broadcasting data and communication data, converting the optical signals transferred upward into electric signals, demultiplexing and converting the uplink telephone voice data into analog telephone voice signals to transfer the converted analog telephone voice signals to a PSTN; a plurality of ONTs (Optical Network Terminals) for converting the optical signals transferred from the OLT into electric signals, demultiplexing and converting the demultiplexed downlink telephone voice data into analog signals to transfer the converted analog signals to subscribers' telephones; and an optical branching filter for branching the signals from the OLT to the plurality of ONTs, combining, and transferring the signals from the plurality of ONTs to the OLT.

摘要翻译： 公开了一种用于使用光线路将电话语音数据发送到用户终端的光通信系统。 该系统包括将电话语音数据与广播数据和通信数据一起复用的OLT（光线路终端），将向上传送的光信号转换为电信号，解复用并将上行电话语音数据转换为模拟电话语音信号，以将 将模拟电话语音信号转换成PSTN; 用于将从OLT传送的光信号转换为电信号的多个ONT（光网络终端），解复用和将解复用的下行电话语音数据转换为模拟信号，以将转换的模拟信号传送到订户的电话; 以及用于将来自OLT的信号分支到多个ONT的光分路滤波器，组合并将来自多个ONT的信号传送到OLT。

公开(公告)号：US20050172329A1

公开(公告)日：2005-08-04

申请号：US10932873

申请日：2004-09-02

申请人： Kwan-Lae Kim ,  Sung-Jin Park ,  Young-Seok Kim ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Kwan-Lae Kim ,  Sung-Jin Park ,  Young-Seok Kim ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： H04L12/28 ,  H04N7/173 ,  G06F13/00 ,  H04N5/445 ,  H04N5/45 ,  H04N5/50

CPC分类号： H04N21/4383 ,  H04N7/173 ,  H04N7/17354 ,  H04N21/434 ,  H04N21/472 ,  H04N21/6581

摘要： An ONU device is disclosed. The ONU device is capable of channel switching in a broadcasting-telecommunications convergence system where digital broadcasting signals of channels are switched according to subscribers, converged with communication signals destined for the subscribers, and transmitted to the subscribers. In the ONU device, a channel information extractor extracts channel switching information about digital broadcasting contents included in the digital broadcasting signals, a channel switching information database stores the extracted channel switching information and provides the channel switching information according to channel selection information from a subscriber received from a zapping processor, and the zapping processor outputs a control signal for channel switching according to the channel switching information.

摘要翻译： 公开了一种ONU设备。 ONU设备能够在广播电信会聚系统中进行信道切换，其中根据用户切换信道的数字广播信号，与发往用户的通信信号进行融合，并发送给用户。 在ONU设备中，信道信息提取器提取关于数字广播信号中包括的数字广播内容的频道切换信息，频道切换信息数据库存储所提取的频道切换信息，并根据来自用户的频道选择信息提供频道切换信息 并且切换处理器根据信道切换信息输出用于信道切换的控制信号。

公开(公告)号：US20050169302A1

公开(公告)日：2005-08-04

申请号：US10861058

申请日：2004-06-04

申请人： Seung-Jin Lee ,  Jae-Hun Cho ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Seung-Jin Lee ,  Jae-Hun Cho ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： H04N7/22 ,  H04J3/00 ,  H04L12/28 ,  H04L12/64 ,  H04N21/647 ,  H04J3/16

CPC分类号： H04Q11/0067 ,  H04L12/64 ,  H04Q2011/0064

摘要： A broadcast/communication convergence system and a method for transmitting and receiving Ethernet data using the same is disclosed. The system is equipped with an optical network unit performing a time division multiplexing operation on the Ethernet data switched by a network switch and a plurality of broadcast data units, transmitting a resultant signal of the operation to a corresponding subscriber set-top box, and providing data from the subscriber set-top box to the network switch. In one aspect of the invention, the optical network unit produces a length of an Ethernet data frame provided from the network switch. An encapsulation operation is carried out by generating data length information and inserting the generated length information into an Ethernet data frame. Encapsulated Ethernet data is transmitted to the subscriber set-top box. The subscriber set-top box carries out a time division demultiplexing operation for a signal transmitted from the optical network unit, and separates the signal into the Ethernet data and broadcast data. When a framing bit is detected from the frame of the Ethernet data based on a result of the separation, the length information is detected from the Ethernet data frame. The Ethernet data frame is counted on the basis of the detected length information and recognizing the Ethernet data. A preamble bit and a start-of-field delimiter (SFD) are inserted into the recognized Ethernet data and the original Ethernet data is recovered.

摘要翻译： 公开了广播/通信收敛系统以及使用该广播/通信收敛系统发送和接收以太网数据的方法。 该系统配备有光网络单元，对由网络交换机和多个广播数据单元交换的以太网数据进行时分多路复用操作，将该操作的合成信号发送到相应的用户机顶盒，并提供 从用户机顶盒到网络交换机的数据。 在本发明的一个方面，光网络单元产生从网络交换机提供的以太网数据帧的长度。 通过产生数据长度信息并将生成的长度信息插入到以太网数据帧中来执行封装操作。 封装的以太网数据被传送到用户机顶盒。 用户机顶盒对从光网络单元发送的信号进行时分解复用操作，并将信号分离成以太网数据和广播数据。 当基于分离结果从以太网数据的帧检测到成帧位时，从以太网数据帧检测长度信息。 基于检测到的长度信息对以太网数据帧进行计数，并识别以太网数据。 将前导码位和起始字段分隔符（SFD）插入到识别的以太网数据中，并恢复原始以太网数据。

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：US20050078960A1

公开(公告)日：2005-04-14

申请号：US10794308

申请日：2004-03-05

申请人： Jeong-Seok Choi ,  Do-Hun Cha ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Jeong-Seok Choi ,  Do-Hun Cha ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： H04B10/272 ,  H04J14/00 ,  H04L12/28 ,  H04Q11/00

CPC分类号： H04Q11/0067 ,  H04L12/2856 ,  H04L12/2885 ,  H04Q11/0071

摘要： A subscriber distribution network includes a backplane board that has a network switch and a plurality of subscriber line units, the network data, the plurality of subscriber line units being provided between the network switch and subscriber set-tops, providing data from the network switch to a corresponding subscriber set-top, and providing data transmitted from the subscriber set-tops to the network switch. In the subscriber distribution network apparatus, the network switch can be connected in simple fashion to the subscriber line units by connectors.

摘要翻译： 用户分配网络包括背板，其具有网络交换机和多个用户线路单元，所述网络数据，所述多个用户线路单元被提供在所述网络交换机和订户机顶盒之间，提供来自所述网络交换机的数据 相应的用户机顶，并且提供从订户机顶部传送到网络交换机的数据。 在用户分配网络装置中，网络交换机可以通过连接器以简单的方式连接到用户线路单元。

公开(公告)号：US20050027786A1

公开(公告)日：2005-02-03

申请号：US10759720

申请日：2004-01-16

申请人： Yong-Deok Kim ,  Jun-Ho Koh ,  Yun-Je Oh

发明人： Yong-Deok Kim ,  Jun-Ho Koh ,  Yun-Je Oh

IPC分类号： H04N7/08 ,  H04N5/00 ,  H04N7/081 ,  H04N7/10 ,  H04N7/173 ,  H04N7/24 ,  H04N21/236 ,  H04N21/238 ,  H04N21/434 ,  H04N21/472 ,  G06F15/16

CPC分类号： H04N21/236 ,  H04N7/17318 ,  H04N21/23608 ,  H04N21/238 ,  H04N21/4344 ,  H04N21/472

摘要： An MPTS-SPTS (Multiple Program Transport Stream-Single Program Transport Stream) separation device in a digital broadcasting system includes a receiving interface, an MPTS-SPTS separator, and a transmitting interface. The separator detects a PAT (Program Association Table) packet from among MPEG-2 MPTS packets from a digital broadcast program provider, analyzes PIDs (Program IDs) that correspond respectively to a plurality of programs in an MPEG-2 MPTS packet, receives information of a single program selected by a user, removes packets associated with programs other than the selected program, deletes from the PAT PIDs associated with the other programs, and inserts the changed PAT into a stream corresponding to the selected program.

摘要翻译： 数字广播系统中的MPTS-SPTS（多节目传输流 - 单节目传输流）分离装置包括接收接口，MPTS-SPTS分离器和发射接口。 分离器检测来自数字广播节目提供商的MPEG-2 MPTS分组中的PAT（节目关联表）分组，分析分别对应于MPEG-2 MPTS分组中的多个节目的PID（节目ID），接收 由用户选择的单个节目删除与所选节目以外的节目相关联的分组，从与其他节目相关联的PAT PID中删除，并将改变的PAT插入到与所选节目相对应的节目中。

公开(公告)号：US06944367B2

公开(公告)日：2005-09-13

申请号：US10650414

申请日：2003-08-28

申请人： Jong-Kwon Kim ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Jong-Kwon Kim ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/10 ,  H04B10/03 ,  H04B10/032 ,  H04J14/00 ,  H04J14/02 ,  G02B6/28

CPC分类号： H04B10/505 ,  H04B10/506 ,  H04J14/02

摘要： There is disclosed an optical source generator for wavelength division multiplexing optical communication systems. The optical source generator includes first and second pumping light generators; a first wavelength router for wavelength-division-demultiplexing first pumping lights inputted into a multiplexing port of its first port section to output the demultiplexed pumping lights to the demultiplexing ports of its second port section, and for wavelength-division-demultiplexing second pumping lights inputted into the multiplexing port of its second port section to output the demultiplexed pumping lights to the demultiplexing ports of its first port section; a plurality of first and second optical fiber amplifiers; a second wavelength router for wavelength-division-multiplexing optical signals inputted from the first optical fiber amplifiers into the demultiplexing ports of its first port section, and outputting the multiplexed optical signals to the multiplexing port of its second port section, and for wavelength-division-multiplexing optical signals inputted from the second optical fiber amplifiers into the demultiplexing ports of its second port section, and outputting the multiplexed optical signals to the multiplexing port of its first port section; and first and second optical band pass filters, wherein two groups of optical sources are generated bilaterally.

摘要翻译： 公开了一种用于波分复用光通信系统的光源发生器。 光源发生器包括第一和第二泵浦光发生器; 第一波长路由器，用于波长分解第一泵浦光，其输入到其第一端口部分的多路复用端口，以将解复用的泵浦光输出到其第二端口部分的解复用端口，以及用于波分复用的第二泵浦光输入 进入其第二端口部分的多路复用端口，以将解复用的泵浦光输出到其第一端口部分的解复用端口; 多个第一和第二光纤放大器; 第二波长路由器，用于将从第一光纤放大器输入的光信号波分复用到其第一端口部分的解复用端口，并将复用的光信号输出到其第二端口部分的多路复用端口，并用于波分 将从第二光纤放大器输入的光信号复用到其第二端口部分的解复用端口，并将多路复用光信号输出到其第一端口部分的多路复用端口; 以及第一和第二光学带通滤波器，其中两组光源是双向产生的。

公开(公告)号：US07254344B2

公开(公告)日：2007-08-07

申请号：US10427284

申请日：2003-05-01

申请人： Jong-Kwon Kim ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Jong-Kwon Kim ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H04B10/00 ,  H04J14/00

CPC分类号： H04B10/2587 ,  H04J14/0221 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J2014/0253 ,  H04Q11/0067 ,  H04Q2011/0016

摘要： A passive optical network includes a central office and a subscriber-side apparatus connected with the central office through an optical fiber link. The subscriber-side apparatus performs communication with the central office based on wavelength-division-multiplexed optical signals. The central office has a routing section, provided with first to fourth multiplexing ports, for demultiplexing multi-wavelength light inputted from the fourth multiplexing port into a plurality of channels. Each of the demultiplexed channels is amplified and multiplexed for output through the first multiplexing port. Optical signals inputted through the third multiplexing port are demultiplexed and outputted upstream. The routing section also multiplexes channels for downstream optical signals, outputting the multiplexed channels through the second port. A splitting section, provided with first to third splitting ports and arranged on a loop optical waveguide connects the first and fourth multiplexing port with each other. The splitting section causes some of multi-wavelength light inputted into the first splitting port to be outputted through the second splitting port and causes the remainder of multi-wavelength light to be outputted through the third splitting port connected with the fourth multiplexing port. A circulator causes the multi-wavelength light inputted through the second splitting port to be transmitted to the subscriber-side apparatus and causes upstream optical signals received from the subscriber-side apparatus to be outputted to the third multiplexing port.

摘要翻译： 无源光网络包括通过光纤链路与中心局连接的中心局和用户侧设备。 用户侧设备基于波分复用光信号与中心局进行通信。 中心局具有路由部分，设置有第一到第四复用端口，用于将从第四复用端口输入的多波长光解复用为多个信道。 每个解复用的信道被放大和多路复用以通过第一复用端口输出。 通过第三复用端口输入的光信号被解复用并在上游输出。 路由部分还复用用于下行光信号的信道，通过第二端口输出多路复用信道。 具有第一至第三分离端口并布置在环形光波导上的分离部分将第一和第四复用端口彼此连接。 分割部使通过第二分割口输出输入到第一分割端口的一部分多波长光，并且通过与第四复用端口连接的第三分离端口输出剩余的多波长光。 循环器使得通过第二分割端口输入的多波长光被发送到用户侧装置，并且使从用户侧装置接收到的上行光信号输出到第三复用端口。