利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

34 条记录 (耗时 0.019 秒)

    Apparatus and method for 8B/10B code-group validity check
    1.
    发明授权
    Apparatus and method for 8B/10B code-group validity check 失效
    8B / 10B码组有效性检查装置及方法

    公开(公告)号：US07205911B2

    公开(公告)日：2007-04-17

    申请号：US10718759

    申请日：2003-11-21

    申请人： Junghak Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Junghak Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： H03M7/00

    CPC分类号： H03M5/145 ,  H04L25/4908

    摘要： An apparatus and method for checking validity of an 8B/10B code-group are provided. The apparatus for checking validity of an 8B/10B code-group includes a 6B/5B disparity classification unit, a 4B/3B disparity classification unit, an RD6 detection unit, an RD4 detection unit, an 8B/10B code-group rule violation detection unit, an RD error detection unit, and a unit for outputting 8B/10B code-group validity. The apparatus receives an 8B/10B code-group, divides into a least significant 6-bit nibble and a most significant 4-bit nibble, detects a running disparity, and by doing so, determines the validity of a code-group. The apparatus and method for checking validity of an 8B/10B code-group relatively shortens the critical path, which indicates the number of combinational logic circuits that should be operated in a unit time, and therefore the apparatus and method are appropriate to high-speed systems such as gigabit Ethernet systems.

    摘要翻译： 提供一种用于检查8B / 10B码组的有效性的装置和方法。 用于检查8B / 10B码组的有效性的装置包括6B / 5B视差分类单元，4B / 3B视差分类单元，RD6检测单元，RD4检测单元，8B / 10B码组规则违规检测 单元，RD错误检测单元和用于输出8B / 10B码组有效性的单元。 该装置接收到一个8B / 10B码组，分为最低有效6比特半字节和最高有效4比特半字节，检测运行中的差异，并通过这样做确定码组的有效性。 用于检查8B / 10B码组的有效性的装置和方法相对缩短关键路径，其指示应在单位时间内操作的组合逻辑电路的数量，因此该装置和方法适合于高速 诸如千兆以太网系统的系统。

    Method and apparatus for processing ethernet data frame in media access control (MAC) sublayer of ethernet passive optical network (PON)
    3.
    发明授权
    Method and apparatus for processing ethernet data frame in media access control (MAC) sublayer of ethernet passive optical network (PON) 有权
    以太网无源光网络（PON）的媒体访问控制（MAC）子层中处理以太网数据帧的方法和装置

    公开(公告)号：US07274695B2

    公开(公告)日：2007-09-25

    申请号：US10646062

    申请日：2003-08-22

    申请人： Seung Hwan Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Seung Hwan Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： H04L12/28 ,  H04J3/16 ,  H04J3/24

    CPC分类号： H04L1/0061 ,  H04L1/0072 ,  H04L69/08 ,  H04L69/32 ,  H04Q11/0066 ,  H04Q11/0067 ,  H04Q11/0071 ,  H04Q2011/0064

    摘要： A method and apparatus for processing Ethernet data frames in a media access control (MAC) sublayer of an Ethernet passive optical network (PON) are provided. The apparatus for processing protocol layers of an Ethernet passive optical network (PON) includes: an Emulation sublayer processing unit which performs cyclic redundancy check (CRC) on information included in a preamble of an Ethernet data frame transferred from a physical layer processing unit, and extracts LLIDs from the preamble; a MAC sublayer processing unit, which has one MAC address corresponding to multiple LLID indexes corresponding to the extracted LLIDs, to perform control and management; a MAC control sublayer processing unit which contains information of the multiple LLID indexes, and performs MAC control on each LLID index; a PON bridge sublayer processing unit which performs a bridge function of the Ethernet PON and tag management of the Ethernet PON; and an Emulated-MAC sublayer processing unit which performs upstream and downstream Ethernet data frame matching, FCS error checking, and PAUSE frame processing. Therefore, an effect exists in that when processing the Ethernet frames, an interface suited to the Ethernet PON system is provided.

    摘要翻译： 提供了一种用于处理以太网无源光网络（PON）的媒体访问控制（MAC）子层中的以太网数据帧的方法和装置。 用于处理以太网无源光网络（PON）的协议层的装置包括：仿真子层处理单元，对从物理层处理单元传送的以太网数据帧的前导码中包括的信息执行循环冗余校验（CRC），以及 从前导码中提取LLID; MAC子层处理单元，其具有对应于与所提取的LLID相对应的多个LLID索引的一个MAC地址，以执行控制和管理; MAC控制子层处理单元，其包含多个LLID索引的信息，并对每个LLID索引执行MAC控制; 执行以太网PON的桥接功能和以太网PON的标签管理的PON桥接子层处理单元; 以及执行上游和下游以太网数据帧匹配，FCS错误检查和暂停帧处理的仿真MAC子层处理单元。 因此，在处理以太网帧时，提供了适用于以太网PON系统的接口。

    Method of controlling FEC in EPON
    4.
    发明授权
    Method of controlling FEC in EPON 有权
    在EPON中控制FEC的方法

    公开(公告)号：US07600171B2

    公开(公告)日：2009-10-06

    申请号：US11005115

    申请日：2004-12-04

    申请人： Hoon Lee ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Hoon Lee ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： G06F11/00 ,  H03M13/00 ,  G01R31/08 ,  H04J3/16

    CPC分类号： H04L1/0009 ,  H04L1/0057 ,  H04L1/203 ,  H04Q11/0066 ,  H04Q11/0067 ,  H04Q2011/0079 ,  H04Q2011/0088

    摘要： A method of controlling a Forward Error Correction (FEC) operation including: configuring a FEC frame to be transmitted between an OLT and an ONU comprising a FEC frame identifier indicating whether FEC should be performed, data, a first flag indicating that FEC should be performed, and a second flag indicating that the FEC frame is to be FEC encoded; initializing the OLT by disabling a FEC function; determining whether the ONU requires FEC to be performed based on a FEC frame identifier received from the ONU; IPG stretching the FEC frame when the ONU requires to FEC to be performed; and transmitting the FEC frame to the ONU after FEC encoding based on the second flag of an input frame to a PCS sublayer from an upper layer. The method controls an effective operation of a FEC of an ONU and an OLT without changing a Round Trip Time (RTT) according to optical link quality in an EPON. Accordingly, FEC is used only if necessary, thereby simplifying the managing of a link, and preventing an excessive 35% reduction of throughput caused by use of unnecessary FEC.

    摘要翻译： 一种控制前向纠错（FEC）操作的方法，包括：配置要在OLT和ONU之间传输的FEC帧，包括指示是否应执行FEC的FEC帧标识符，数据，指示应执行FEC的第一标志 以及指示FEC帧要被FEC编码的第二标志; 通过禁用FEC功能来初始化OLT; 基于从ONU接收到的FEC帧标识来确定ONU是否需要执行FEC; 当ONU需要执行FEC时，IPG扩展FEC帧; 并且基于来自上层的PCS子层的基于输入帧的第二标志的FEC编码之后将FEC帧发送到ONU。 该方法根据EPON中的光链路质量来控制ONU和OLT的FEC的有效操作，而不改变往返时间（RTT）。 因此，仅在必要时使用FEC，从而简化链路的管理，并且防止由于使用不必要的FEC导致的吞吐量的过度的35％的降低。

    Ethernet switch, and apparatus and method for expanding port
    5.
    发明授权
    Ethernet switch, and apparatus and method for expanding port 有权
    以太网交换机，扩展端口的设备和方法

    公开(公告)号：US07599353B2

    公开(公告)日：2009-10-06

    申请号：US10739737

    申请日：2003-12-17

    申请人： Chan Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Chan Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： H04L12/66

    CPC分类号： H04L49/45 ,  H04L49/351

    摘要： An Ethernet switch having a function of expanding a port, apparatus and method for expanding a port are provided. A receiver receives a frame including predetermined port identification information. An information detector detects the predetermined port identification information and a terminal address of a terminal connected to a sub port corresponding to the predetermined port identification information. A storage unit stores an address table including the terminal address and the predetermined port identification information. A reader reads port identification information corresponding to a destination address included in the frame from the address table. A frame transformer adds the read port identification information to the frame. An output unit outputs the frame transformed by the frame transformer to a main port connected to a sub port corresponding to the read port identification information among main ports that can be connected to at least one sub port.

    摘要翻译： 提供具有扩展用于扩展端口的端口，装置和方法的功能的以太网交换机。 接收机接收包括预定端口识别信息的帧。 信息检测器检测预定端口识别信息和连接到与预定端口识别信息对应的子端口的终端的终端地址。 存储单元存储包括终端地址和预定端口识别信息的地址表。 读取器从地址表读取与帧中包括的目的地地址对应的端口识别信息。 帧转换器将读端口识别信息添加到帧。 输出单元将帧变换器变换后的帧输出到与能够与至少一个子端口连接的主端口中对应于读端口识别信息的子端口连接的主端口。

    Method of controlling upstream data transmission in ethernet PON and apparatus thereof
    6.
    发明授权
    Method of controlling upstream data transmission in ethernet PON and apparatus thereof 有权
    以太网PON上游数据传输控制方法及其设备

    公开(公告)号：US07443861B2

    公开(公告)日：2008-10-28

    申请号：US10700613

    申请日：2003-11-03

    申请人： Ho Sook Lee ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Ho Sook Lee ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： H04L12/28 ,  H04L12/56

    CPC分类号： H04Q11/0067 ,  H04Q11/0066 ,  H04Q2011/0064 ,  H04Q2011/0084

    摘要： A method of controlling data transmission in an Ethernet passive optical network (EPON) and an apparatus thereof are provided. Transmission permission messages using a mode of bandwidth allocation are queued in a queuing unit according to the types of the transmission permission messages. A transmission time duration of upstream data is defined for each of the transmission permission messages queued in the queuing unit. A bandwidth allocation unit generates transmission permission messages to allocate upstream data transmission bandwidth for an optical network unit (ONU), based on the transmission permission messages stored in the storage unit. A scheduler designates the predetermined priority, reads transmission permission messages from queues according to a predetermined priority, determines a transmission start time of upstream data, and outputs the transmission permission messages.

    摘要翻译： 提供一种控制以太网无源光网络（EPON）中的数据传输的方法及其装置。 使用带宽分配模式的发送许可消息根据发送许可消息的类型在排队单元中排队。 针对在排队单元中排队的每个发送许可消息定义上行数据的传输持续时间。 带宽分配单元基于存储在存储单元中的传输允许消息，生成用于为光网络单元（ONU）分配上行数据传输带宽的发送允许消息。 调度器指定预定优先级，根据预定优先级从队列中读取发送许可消息，确定上行数据的发送开始时间，并输出发送许可消息。

    CRC verification apparatus with constant delay and method thereof
    7.
    发明授权
    CRC verification apparatus with constant delay and method thereof 失效
    具有恒定延迟的CRC校验装置及其方法

    公开(公告)号：US07194672B2

    公开(公告)日：2007-03-20

    申请号：US10723551

    申请日：2003-11-25

    申请人： Chan Kim ,  Seung Hwan Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Chan Kim ,  Seung Hwan Kim ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： H03M13/00

    CPC分类号： H03M13/091

    摘要： An apparatus and method for detecting errors in received data and transferring only error-free data in data communications are provided. In the cyclic redundancy check (CRC) verification apparatus and method having a constant delay, irrespective of the length of a received data frame, input and output processing delay of received data is made to be constant. The CRC verification apparatus having constant delay comprises an input control unit which stores the start address of an input data frame in a memory storing the input data frame, and stores a CRC verification result in the start address location; and an output control unit which after a predetermined constant time passes from the start address, reads an input data frame and if the CRC verification result is normal, output the read data frame. The apparatus and method make the time taken for receiving a data frame, constant irrespective of the received data frame, while CRC verification is performed.

    摘要翻译： 提供了用于检测接收到的数据中的错误并且仅传送数据通信中的无错误数据的装置和方法。 在具有恒定延迟的循环冗余校验（CRC）验证装置和方法中，与接收到的数据帧的长度无关，使得接收数据的输入和输出处理延迟是恒定的。 具有恒定延迟的CRC校验装置包括输入控制单元，其将输入数据帧的起始地址存储在存储输入数据帧的存储器中，并将CRC验证结果存储在起始地址位置; 以及输出控制单元，其在从起始地址经过预定的恒定时间之后，读取输入数据帧，并且如果CRC验证结果正常，则输出读取的数据帧。 该装置和方法使得接收数据帧所花费的时间，不管接收的数据帧是多少，而执行CRC校验。

    Communication apparatus in Ethernet passive optical network
    8.
    发明授权
    Communication apparatus in Ethernet passive optical network 有权
    以太网无源光网络中的通信设备

    公开(公告)号：US07379676B2

    公开(公告)日：2008-05-27

    申请号：US10724554

    申请日：2003-11-25

    申请人： Ho Yong Kang ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Ho Yong Kang ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： H04B10/00

    CPC分类号： H04Q11/0067 ,  H04L47/2433 ,  H04L47/31 ,  H04L47/50 ,  H04Q11/0066 ,  H04Q11/0071 ,  H04Q2011/0064

    摘要： Provided is a communication apparatus in a PON bridge sublayer, which supports point-to-point communications between optical network units (ONU) in an Ethernet passive optical network (EPON). To support point-to-point communications between ONUs in the EPON, the communication apparatus in the PON bridge sublayer includes a second processing portion, a second input queue, a second lookup and learning portion, a second output queue, a first input queue, a first lookup and learning portion, a filtering database table a VLAN ID table, a table control portion, a first output queue, and a first processing portion.

    摘要翻译： 提供了一种支持以太网无源光网络（EPON）中的光网络单元（ONU）之间的点对点通信的PON桥接子层中的通信装置。 为了支持EPON中的ONU之间的点对点通信，PON桥接子层中的通信装置包括第二处理部分，第二输入队列，第二查找和学习部分，第二输出队列，第一输入队列， 第一查找和学习部分，过滤数据库表，VLAN ID表，表控制部分，第一输出队列和第一处理部分。

    Dual mode decoder
    9.
    发明授权
    Dual mode decoder 失效
    双模解码器

    公开(公告)号：US07313751B2

    公开(公告)日：2007-12-25

    申请号：US11231415

    申请日：2005-09-20

    申请人： Sungsoo Kang ,  Tae Whan Yoo ,  Hyeong Ho Lee

    发明人： Sungsoo Kang ,  Tae Whan Yoo ,  Hyeong Ho Lee

    IPC分类号： H03M13/00 ,  G06F11/00 ,  G08C25/00 ,  H04L1/00

    CPC分类号： H03M5/02 ,  H03M5/145 ,  H03M7/04

    摘要： A dual mode decoder which includes an MB810 decoder; an 8B/10B decoder; a mode detection unit, a first low pass filter; a second low pass filter; an IDLE code detection unit which detects IDLE code and transfers to the mode detection unit; a first switch unit which selectively outputs the 10-bit code input from the first low pass filter and the second low pass filter; a parallel conversion unit which outputs a 10-bit parallel code; a first selection unit which provides the 10-bit parallel code to the decoder determined as the operation decoder between the MB810 decoder and the 8B/10B decoder; and a second selection unit which selectively outputs an 8-bit code corresponding to the 10-bit parallel code input form the decoder determined as the operation decoder.

    摘要翻译： 一种双模式解码器，包括一个MB810解码器; 一个8B / 10B解码器; 模式检测单元，第一低通滤波器; 第二低通滤波器; IDLE码检测单元，其检测IDLE码并传送到模式检测单元; 第一开关单元，其选择性地输出从第一低通滤波器和第二低通滤波器输入的10位代码; 并行转换单元，其输出10位并行代码; 第一选择单元，其将10位并行码提供给被确定为MB810解码器和8B / 10B解码器之间的操作解码器的解码器; 以及第二选择单元，其从被确定为操作解码器的解码器选择性地输出与10位并行代码输入相对应的8位代码。