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公开(公告)号：KR1019910005496B1
公开(公告)日：1991-07-31
申请号：KR1019880017352
申请日：1988-12-23
Inventor： 김재근
Abstract: The apparatus is for controlling channel assignment. The apparatus condenses 8-B channels into 5-B channels and divides the D- channelof the communication line. The transmission speed of 2.048kbps is converted into 400 kbps in the apparatus. The apparatus includes an a-channel extracting/inserting unit (9) for extracting the a-channel from the received line data and for inserting the a-channel transmitted from the CPU into the transmission data stream, a D-channel extracting/inserting unit (10) for executing same functions of the a-channel extracting/inserting unit (9) to the D-channel, a receive frame synchronizing unit (11) for extracting frame pattern from the received data and comparing the extracted frame to the self generated reference frame to find the correct position of the frame so that when succesive four frames are coincide, the frame synchonizing signal is transmitted.
Abstract translation: 该装置用于控制信道分配。 该设备将8-B信道压缩成5-B信道，并将通信线路的D-通道分开。 2.048kbps的传输速度在设备中转换为400kbps。 该装置包括一个用于从所接收的行数据中提取a信道并将从CPU发送的a信道插入到传输数据流中的一个通道提取/插入单元（D），一个D信道提取/插入单元 （10），用于对所述D信道执行所述a信道提取/插入单元（9）的相同功能;接收帧同步单元（11），用于从所接收的数据中提取帧模式，并将提取的帧与自生成 参考帧以找到帧的正确位置，使得当连续的四个帧重合时，帧同步信号被发送。
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公开(公告)号：KR1019910005489B1
公开(公告)日：1991-07-31
申请号：KR1019880017265
申请日：1988-12-22
Inventor： 김재근
Abstract: The modulator is available when the North American standard DS1 (T1) level and the European standard DS1 (E1) level transmission types are intgerconnected. The modulator includes a T1 trunk inter face unti haivng maximum 5 T1 trunks, 4 E1 trunks and 1 spare T1 trunk for constructing the DS1 level signal frame, for coding the transmission lines, and for dividing the PCM channel information and the signal channel information a E1 trunk interface unti having functions same as the T1 trunk interface unit and A/μ formula signal mudulation unit for modulating the audio signals of two types to interface, a system clock unit for generating and transmitting the system clock to the interface units and an external clock signal extracting unit for extracting the external clock signal when the built-in clock generator is abnornal.
Abstract translation: 当北美标准DS1（T1）电平和欧洲标准DS1（E1）电平传输类型互连时，调制器可用。 调制器包括一个T1中继接口，用于构建DS1级信号帧的最大5个T1中继，4个E1中继和1个备用T1中继，用于对传输线进行编码，并将PCM信道信息和信道信息a E1中继接口具有与T1中继接口单元相同的功能和用于调制两种类型接口的音频信号的A /μ公式信号混合单元，用于生成和传输系统时钟到接口单元的系统时钟单元和外部 时钟信号提取单元，用于当内置时钟发生器异常时提取外部时钟信号。
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Patent Agency Ranking
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公开(公告)号：KR100367091B1
公开(公告)日：2003-01-06
申请号：KR1019990020932
申请日：1999-06-07
Applicant: 한국전자통신연구원
IPC: H04L12/40
Abstract: PURPOSE: The cell switching apparatus based on a bus is provided to offer the multimedia service with high quality such as broadcast service and VOD(Video On Demand) service to a subscriber, by suggesting a bus structure without overflow of cell data in case that a lower direction traffic toward the subscriber on a network is faster than an upper direction traffic. CONSTITUTION: An operation and management part(102) monitors the states of a main controller(101) and a bus connection part(103), manages a look-up table for converting a header, performs a control function and sets a priority order of data. The bus connection part(103), connected to the bus, transmits and receives the data. A data bus(104) includes a C-bus(105), a R-bus(106) and a T-bus(107). A M-bus(108) controls the operation and management part(102), the main controller(101) and the bus connection part(103). The main controller(101) generates the signal for the C-bus(105) which synchronizes the data that is transmitted and received from the bus connection part(103).
Abstract translation: 目的：提供基于总线的信元交换装置，通过建议总线结构提供高质量的多媒体服务，例如广播服务和VOD（视频点播）服务，在没有信元数据溢出的情况下 在网络上朝向用户的较低方向的业务量比较高方向的业务量更快。 构成：运用管理部（102）监视主控制器（101）和总线连接部（103）的状态，管理用于变换标题的查找表，执行控制功能并设定 数据。 总线连接部分（103）连接到总线，发送和接收数据。 数据总线（104）包括C总线（105），R总线（106）和T总线（107）。 M总线（108）控制操作和管理部分（102），主控制器（101）和总线连接部分（103）。 主控制器（101）产生用于使从总线连接部分（103）发送和接收的数据同步的C总线（105）的信号。
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公开(公告)号：KR100358357B1
公开(公告)日：2002-10-25
申请号：KR1019990062469
申请日：1999-12-27
Applicant: 한국전자통신연구원
IPC: H03M13/00
Abstract: 디지털신호전송에있어서전송도중발생한연집에러를정정하기위해리드-솔로몬(Reed-Solomon code) 코드를보통많이사용한다. 일반적으로전송로를통해디지털신호가전송되는경우전송거리에따라전송품질이저하된다. 이와같이저하된전송품질을향상시키기위해코드워드의에러정정바이트개수를늘린다. 본발명은, 전송거리에따라에러정정성능을변화시키기위해에러정정바이트수를변경시킬때 변경된코드워드를디코딩할 수있는리드-솔로몬디코더에관한내용으로서, 수신된코드워드를에러정정개수에맞추어디코딩할 수있도록하는에러위치계산회로및 에러크기계산회로를제공한다.
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公开(公告)号：KR100336718B1
公开(公告)日：2002-05-13
申请号：KR1019990061931
申请日：1999-12-24
Applicant: 한국전자통신연구원
IPC: H04B10/25 , H04B10/2581
CPC classification number: H04Q11/0062 , H04Q11/0067 , H04Q2011/0064 , H04Q2011/0088
Abstract: 본발명은비동기전송모드-광통신망(ATM-PON)에서의광선로종단장치(OLT)에관한것으로서, 가입자별로한 가닥의광케이블을사용하여기존의협대역종합정보통신망서비스를기본서비스로제공하며, 그이상의대역을갖는비디오및 분배성서비스들을제공하기위한, 광선로종단장치를제공하기위하여, 비동기전송모드광통신망의광선로종단장치에있어서, 외부로부터비동기전송모드(ATM) 셀을수신하여암호화처리한후 하향프레임을생성하고, 하향프레임의병렬데이터를직렬변환하기위한하향프레임처리수단; 상기하향프레임처리수단에서직렬변환된프레임데이터를전/광변환한후 하향광신호를파장분할다중화하여광분배망으로전송하고, 상기광분배망으로부터입력되는상향광 신호를파장분할다중화하여광/전변환한후 클럭을추출하여수신데이터를복구하는파장분할다중수단; 상기파장분할다중수단에서복구된데이터의오버헤드필드를검색하여슬롯경계를식별하고, 물리적계층(PLOAM) 셀, 사용자셀, 분할슬롯을분리처리하기위한상향프레임처리수단; 공유매체제어(MAC) 프로토콜및 레인징기능을수행하며, 상기하향프레임처리수단, 상기상향프레임처리수단의제어에필요한변수및 타이밍신호를생성하기위한제어신호생성수단; 및상기제어신호생성수단에의해생성된변수및 타이밍신호를이용하여, 상기하향프레임처리수단및 상기상향프레임처리수단을제어하여광선로종단장치의상하향프레임을처리하기위한제어수단을포함하며, 비동기전송모드-광통신망등에이용됨.
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公开(公告)号：KR1020010064245A
公开(公告)日：2001-07-09
申请号：KR1019990062395
申请日：1999-12-27
Applicant: 한국전자통신연구원
IPC: H04L12/28
CPC classification number: H04L12/5601 , H04L2012/5625 , H04L2012/5658
Abstract: PURPOSE: A device for processing a layer management in an ATM(Asynchronous Transfer Mode) access system is provided to divide a layer managing function as a function module unit. Therefore, it is possible to process the layer managing function in real time, and to minimize implement/maintenance costs. CONSTITUTION: An IPC(Inter Processor Communication) receiving message processor(11) analyzes a header of a received IPC message, and transmits the message to corresponding processors(13-17). An IPC transmitting message processor(12) receives a message for being transmitted to an operation/maintenance unit, and transmits the message to a communication unit. A layer control processor(13) receives a layer control message, and performs ATM(Asynchronous Transfer Mode) connection setup/release/test functions. An AAL5(ATM Adaption Layer5) processor(14) receives an AAL5 message, and processes an AAL5 division/recombination functions and a CRC(Cycle Redundancy Check)32 function. A capacity cumulative processor(15) receives a capacity cumulative message, and performs physical layer, ATM layer and AAL5 layer capacity accumulation. An OAM(Operation Administration and Maintenance) processor(16) receives an OAM message, and performs an OAM function. A switch processor(17) receives a switch message, and performs a switch function. A mounting/demounting processor(18) receives a board mounting/demounting message, and processes mounting/demounting of a board. An error processor(19) receives an error generating message, and performs physical layer and ATM layer error processes. An interrupt processor(20) processes interrupts generated from a subscriber line card(500) and a network line card(700). A timer processor(21) generates a timer interrupt.
Abstract translation: 目的：提供一种用于处理ATM（异步传输模式）接入系统中的层管理的设备，以将层管理功能划分为功能模块单元。 因此，可以实时处理层管理功能，并尽可能减少实施/维护成本。 构成：IPC（处理器间通信）接收消息处理器（11）分析接收的IPC消息的报头，并将消息发送到对应的处理器（13-17）。 IPC发送消息处理器（12）接收用于发送到操作/维护单元的消息，并将消息发送到通信单元。 层控制处理器（13）接收层控制消息，并执行ATM（异步传输模式）连接建立/释放/测试功能。 AAL5（ATM适配层5）处理器（14）接收AAL5消息，并处理AAL5分割/复合功能和CRC（循环冗余校验）32功能。 容量累积处理器（15）接收容量累积消息，并执行物理层，ATM层和AAL5层容量累积。 OAM（操作管理和维护）处理器（16）接收OAM消息，并执行OAM功能。 交换处理器（17）接收切换消息，并执行切换功能。 安装/拆卸处理器（18）接收板安装/拆卸消息，并且处理板的安装/拆卸。 错误处理器（19）接收错误产生消息，并执行物理层和ATM层错误处理。 中断处理器（20）处理从用户线路卡（500）和网线卡（700）产生的中断。 定时器处理器（21）产生定时器中断。
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