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：US08451859B2

公开(公告)日：2013-05-28

申请号：US11384723

申请日：2006-03-20

申请人： Sang-Ho Kim ,  Jun-Ho Koh ,  Kyung-Ho Chae ,  Yun-Je Oh

发明人： Sang-Ho Kim ,  Jun-Ho Koh ,  Kyung-Ho Chae ,  Yun-Je Oh

IPC分类号： H04J3/16

CPC分类号： H04L65/605 ,  H04L12/1854 ,  H04L12/189 ,  H04L29/06027 ,  H04L65/103 ,  H04L65/104 ,  H04L65/4076 ,  H04W4/18 ,  H04W80/00

摘要： A packet type retransmission system for DMB services includes a DMB device for receiving multimedia data from a content provider, for converting the multimedia data to DMB data for DMB transmission, and for transmitting the DMB data. A broadcasting transfer medium transfers the DMB data transmitted through the DMB device. A DMB-IP converter receives the DMB data transferred through the broadcasting transfer media and converts the DMB data to packet based data. An IP based multimedia transmitting device outputs the packet based multimedia data converted through the DMB-IP converter to user devices.

摘要翻译： 用于DMB服务的分组类型重传系统包括用于从内容提供商接收多媒体数据的DMB设备，用于将多媒体数据转换为用于DMB传输的DMB数据，以及用于发送DMB数据。 广播传送介质传送通过DMB设备发送的DMB数据。 DMB-IP转换器接收通过广播传送介质传送的DMB数据，并将DMB数据转换为基于数据包的数据。 基于IP的多媒体发送设备将通过DMB-IP转换器转换的基于分组的多媒体数据输出到用户设备。

公开(公告)号：US07564877B2

公开(公告)日：2009-07-21

申请号：US11147703

申请日：2005-06-08

申请人： Jae-Hun Cho ,  Jun-Ho Koh ,  Sang-Ho Kim ,  Kwan-Woong Song ,  Young-Hun Joo ,  Yun-Je Oh

发明人： Jae-Hun Cho ,  Jun-Ho Koh ,  Sang-Ho Kim ,  Kwan-Woong Song ,  Young-Hun Joo ,  Yun-Je Oh

IPC分类号： H04J3/02

CPC分类号： H03K19/1776 ,  H03K19/17744

摘要： A field programmable gate array (FPGA) for multiplexing data and enable signals input from a plurality of input ports and outputting the multiplexed signal to one output port is disclosed. The FPGA includes a plurality of memories, which are connected to the input ports, for storing the input data and enable signals, respectively, and outputting one-shot signals at trailing edges of the enable signals; and a finite state machine (FSM) for sequentially reading the data signals stored in the memories in an order of the one-shot signals input from the memories.

摘要翻译： 公开了一种用于多路复用数据并使能从多个输入端口输入的信号并将复用的信号输出到一个输出端口的现场可编程门阵列（FPGA）。 FPGA包括连接到输入端口的多个存储器，用于分别存储输入数据和使能信号，并在使能信号的后沿输出单触发信号; 以及用于按照从存储器输入的单触发信号的顺序顺序读取存储在存储器中的数据信号的有限状态机（FSM）。

公开(公告)号：US07400652B2

公开(公告)日：2008-07-15

申请号：US10861205

申请日：2004-06-04

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

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

IPC分类号： H04H20/28 ,  H04H11/02

CPC分类号： H04N21/4383 ,  H04N5/4401 ,  H04N21/4334 ,  H04N21/434 ,  H04N21/4345 ,  H04N21/4384

摘要： In an MPEG-2 decoding system, a transport decoder decodes a transport packet corresponding to a Program Identification (PID) from an input transport stream, and retrieves a Program Association Table/Program Map Table PAT/PMT) from the stream when it is requested to retrieve Program Specific lnformation (PSI). A pre-decoder checks PSI stored in a PSI memory in response to a request to change to a desired channnel, reads PIDs of transport packets for a Packetized Elementary Stream (PES) of a program corresponding to the desired channel from the PSI memory to provide it to the transport decoder, receives the PAT/PMT and updates the contents of the memory using the PAT/PMT. After decoding, PSI previously extracted therefrom is stored in the memory. PIDs of transport packets for the PES of desired program are obtained referring to the stored PSI, and transport packets having the PIDs are retrieved and decoded.

摘要翻译： 在MPEG-2解码系统中，传输解码器从输入传输流解码对应于节目识别（PID）的传输分组，并且在请求时从流中检索节目关联表/节目映射表PAT / PMT） 检索程序特定信息（PSI）。 响应于要改变到所需信道的请求，预解码器检查存储在PSI存储器中的PSI，从PSI存储器读取对应于期望信道的节目的分组化基本流（PES）的传输分组的PID，以提供 它到传输解码器，接收PAT / PMT，并使用PAT / PMT更新存储器的内容。 在解码之后，先前提取的PSI被存储在存储器中。 通过存储的PSI获得所需节目的PES的传输分组的PID，并且检索并解码具有PID的传输分组。

公开(公告)号：US07388888B2

公开(公告)日：2008-06-17

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： H04J3/04

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

摘要： A broadcast/communication convergence system and method for transmitting and receiving Ethernet data by an optical network unit (ONU) performing a time division multiplexing (TDM) operation and switching by a network switch. A resultant signal is transmitted to a corresponding subscriber set-top box (SSTB), and data from the SSTB is provided to the network switch. A length of an Ethernet data frame is provided from the network switch, and an encapsulation generates and inserts data length information into an Ethernet data frame, for transmission to the SSTB. The SSTB carries out a TDM operation for a signal transmitted from the ONU, and separates the signal into Ethernet and broadcast data. A framing bit is detected based on a result of the separated signals, the length information is detected. A preamble bit and a start-of-field delimiter (SFD) are inserted into the recognized Ethernet data to recover the original Ethernet data.

摘要翻译： 一种广播/通信会聚系统和方法，用于通过执行时分复用（TDM）操作的光网络单元（ONU）和通过网络交换机切换来发送和接收以太网数据。 结果信号被发送到相应的用户机顶盒（SSTB），并且来自SSTB的数据被提供给网络交换机。 从网络交换机提供一长度的以太网数据帧，封装生成并将数据长度信息插入到以太网数据帧中，以传输到SSTB。 SSTB对从ONU发送的信号进行TDM操作，并将信号分离成以太网和广播数据。 基于分离信号的结果检测成帧位，检测长度信息。 将前导码位和起始字段分隔符（SFD）插入识别的以太网数据中以恢复原始以太网数据。

公开(公告)号：US07120848B2

公开(公告)日：2006-10-10

申请号：US10358535

申请日：2003-02-05

申请人： Yong-Deok Kim ,  Yun-Je Oh ,  Jun-Ho Koh ,  Han-Lim Lee ,  Byung-Jik Kim ,  Chan-Youl Kim

发明人： Yong-Deok Kim ,  Yun-Je Oh ,  Jun-Ho Koh ,  Han-Lim Lee ,  Byung-Jik Kim ,  Chan-Youl Kim

IPC分类号： H03M13/00

CPC分类号： H04L1/0047

摘要： The provided forward error correction (FEC) apparatus for a transmission system includes a low pass filter (LPF) passing only a low frequency component of an input signal having a predetermined transmission rate; an AC power meter converting an energy value of an signal output from the LPF into a DC voltage value; a logarithm amplifier converting the exponentially varying DC voltage value from the AC power meter into a linear logarithmically varying DC voltage value; a digital signal processor (DSP) determining the transmission rate of the input signal according to a magnitude of the linear DC voltage value and outputting a control signal according to the transmission rate; a clock generator receiving the control signal and generating a clock signal according to the control signal; and a FEC module receiving the clock signal and performing FEC operation on the received signal. A method for FEC is also provided.

摘要翻译： 所提供的用于传输系统的前向纠错（FEC）装置包括仅通过具有预定传输速率的输入信号的低频分量的低通滤波器（LPF）; 将从LPF输出的信号的能量值转换为DC电压值的AC功率计; 对数放大器将来自AC功率计的指数变化的DC电压值转换成线性对数变化的DC电压值; 数字信号处理器（DSP），根据线性DC电压值的大小确定输入信号的传输速率，并根据传输速率输出控制信号; 接收所述控制信号并根据所述控制信号产生时钟信号的时钟发生器; 以及FEC模块，接收时钟信号并对接收到的信号执行FEC操作。 还提供了一种用于FEC的方法。

公开(公告)号：US20060174315A1

公开(公告)日：2006-08-03

申请号：US11331989

申请日：2006-01-13

申请人： Kwan-lae Kim ,  Jeong-Rok Park ,  Jeong-Seok Choi ,  Chang-Sup Shim ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Kwan-lae Kim ,  Jeong-Rok Park ,  Jeong-Seok Choi ,  Chang-Sup Shim ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： H04N7/00 ,  H04N11/00 ,  H04N7/16

CPC分类号： G09B5/02 ,  G09B21/009 ,  H04N21/235 ,  H04N21/435 ,  H04N21/44012 ,  H04N21/84

摘要： A system having a transmitter and a receiver provides sign language video data in a broadcasting-communication convergence system. A transmitter extracts data, to which a sign language is to be applied, from the multimedia data, converts the extracted data into motion data, converts the motion data into an avatar motion schema indicative of avatar motion data, converts the avatar motion schema into metadata, multiplexes the multimedia data and the metadata, and transmits the multiplexed data. A receiver receives the multiplexed data, demultiplexes the received multiplexed data, extracts an avatar motion schema using the metadata, generates sign language video data by controlling a motion of an avatar through the avatar motion schema, multiplexes the sign language video data and the multimedia data, and transmits the multiplexed data to a display unit.

摘要翻译： 具有发射机和接收机的系统在广播通信收敛系统中提供手语视频数据。 发射机从多媒体数据中提取要应用手语的数据，将所提取的数据转换为运动数据，将运动数据转换为表示化身运动数据的化身运动模式，将化身运动模式转换为元数据 复用多媒体数据和元数据，并发送复用数据。 接收器接收多路复用数据，解复用接收的多路复用数据，使用元数据提取化身运动模式，通过化身运动模式控制化身的运动来生成手语视频数据，多路复用手语视频数据和多媒体数据 并将多路复用数据发送到显示单元。

公开(公告)号：US06944405B2

公开(公告)日：2005-09-13

申请号：US09953637

申请日：2001-09-17

申请人： Han-Lim Lee ,  Byung-Jik Kim ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Han-Lim Lee ,  Byung-Jik Kim ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H04B10/00 ,  H04B10/27 ,  H04Q3/52 ,  H04Q11/00 ,  H04Q11/04 ,  H04B10/08 ,  H04B17/00

CPC分类号： H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0039 ,  H04Q2011/0045

摘要： This invention provides an optical transmission with a demultiplexer for demultiplexing an input optical signal into optical signals of different channels and a multiplexer for multiplexing the optical signals outputted from the demultiplexer. The optical cross-connect device includes: N BICDR (Bit Rate Independent Clock and Data Recovery) receivers each for receiving the associated optical signals outputted from the demultiplexer, for converting the associated optical signal into an electrical signal and reproducing clocks and data based on the bit rate of the electrical signal; a switchboard with a cross-connect switch for receiving output signals from the respective N BICDR receiver; N bit rate discriminating units for receiving the output signals from the N BICDR receivers, respectively, thereby outputting bit rate discriminating signals associated with the N BICDR receivers, respectively; a temperature sensing unit for outputting a temperature sensing signal; and, a central processing unit for receiving the bit rate discriminating signals from the N bit rate discriminating unit, along with the temperature sensing signal from the temperature sensing unit, for compensating each of the received bit rate discriminating signals with a temperature-dependent bit rate value read out, based on the temperature sensing signal, from a memory, and for controlling the bit rate of the associated BICDR receiver based on the compensated bit rate.

摘要翻译： 本发明提供了一种具有解复用器的光传输器，用于将输入光信号解复用为不同信道的光信号，以及复用器，用于复用从解复用器输出的光信号。 光交叉设备包括：N个BICDR（比特率独立时钟和数据恢复）接收机，每个接收器用于接收从解复用器输出的相关联的光信号，用于将相关联的光信号转换成电信号，并基于该信号再现时钟和数据 比特率的电信号; 具有交叉连接开关的交换机，用于接收来自相应N BICDR接收机的输出信号; N比特率鉴别单元，用于分别从N个BICDR接收机接收输出信号，从而分别输出与N个BICDR接收机相关联的比特率鉴别信号; 用于输出温度感测信号的温度检测单元; 以及用于从温度感测单元接收来自N比特率鉴别单元的比特率鉴别信号的中央处理单元，用于以温度依赖比特率对每个接收的比特率鉴别信号进行补偿 基于温度感测信号从存储器读出，并且用于基于补偿的比特率来控制相关联的BICDR接收器的比特率。

公开(公告)号：US20050163163A1

公开(公告)日：2005-07-28

申请号：US10861205

申请日：2004-06-04

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

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

IPC分类号： H03M7/30 ,  H04J1/00 ,  H04N7/173 ,  H04N19/00 ,  H04N19/423 ,  H04N19/44 ,  H04N19/70 ,  H04N21/438

CPC分类号： H04N21/4383 ,  H04N5/4401 ,  H04N21/4334 ,  H04N21/434 ,  H04N21/4345 ,  H04N21/4384

摘要： In an MPEG-2 decoding system, a transport decoder decodes a transport packet corresponding to a PID from an input transport stream, and retrieves a PAT/PMT from the stream when it is requested to retrieve PSI. A pre-decoder checks PSI stored in a PSI memory if a request to change to a desired channel is made, reads PIDs of transport packets for a PES of a program corresponding to the desired channel from the PSI memory to provide it to the transport decoder, receives the PAT/PMT from therefrom at a predetermined time, and updates the contents of the memory using the PAT/PMT. When a transport stream is decoded, PSI is previously extracted therefrom and stored in the memory. Upon the channel change request, PIDs of transport packets for the PES of the desired program are obtained referring to the stored PSI, and transport packets having the PIDs are retrieved and decoded.

摘要翻译： 在MPEG-2解码系统中，传输解码器从输入传输流解码对应于PID的传输分组，并且在请求检索PSI时从流中检索PAT / PMT。 如果进行到所需信道的请求，则预解码器检查存储在PSI存储器中的PSI，从PSI存储器读取对应于期望信道的节目的PES的传输分组的PID，以将其提供给传输解码器 ，在预定时间从其接收PAT / PMT，并使用PAT / PMT更新存储器的内容。 当传输流被解码时，先前从中提取PSI并将其存储在存储器中。 在频道改变请求时，参考存储的PSI获得所需节目的PES的传输分组的PID，并且检索并解码具有PID的传输分组。

公开(公告)号：US20060239303A1

公开(公告)日：2006-10-26

申请号：US11410422

申请日：2006-04-25

申请人： Jae-Hun Cho ,  Jong-Ho Yoon ,  Kwan-Soo Lee ,  Yun-Je Oh ,  Jun-Ho Koh ,  Si-Hai Wang ,  Sang-Ho Kim

发明人： Jae-Hun Cho ,  Jong-Ho Yoon ,  Kwan-Soo Lee ,  Yun-Je Oh ,  Jun-Ho Koh ,  Si-Hai Wang ,  Sang-Ho Kim

IPC分类号： H04J3/06 ,  H04J3/12 ,  H04J3/02

CPC分类号： H04J3/1682 ,  H04J3/0638

摘要： Disclosed is a method of performing a periodical synchronization at a predetermined transmission link for ensuring a start of a super frame in a residential Ethernet system. The method includes the steps of ensuring a start of a first predetermined super frame at the predetermined transmission link, transmitting Sync frames and Async frames through a predetermined number (N-1) of super frames, in which N is a total number of the super frames, and controlling an Async frame to be transmitted at an end point of the (N-1) super frames in such a manner that a start of a next super frame (Nth super frame) is strictly ensured, thereby maintaining a synchronization for the start of the super frame.

摘要翻译： 公开了一种在预定的传输链路上执行周期性同步的方法，以确保在住宅以太网系统中启动超帧。 该方法包括以下步骤：确保在预定传输链路上开始第一预定超帧，通过预定数量（N-1）超帧传输同步帧和异步帧，其中N是超级帧的总数 帧，并且控制在（N-1）个超帧的终点处发送的异步帧，使得下一个超帧（N ^{超帧）的开始是严格的 从而保持超帧开始的同步。}