公开(公告)号：EP1946468A1

公开(公告)日：2008-07-23

申请号：EP06792177.5

申请日：2006-09-20

申请人： Ericsson AB

发明人： LANZONE, Sergio ,  TOSCANO, Orazio

IPC分类号： H04J3/12 ,  H04J3/07 ,  H04L29/06

CPC分类号： H04J3/12 ,  H04J3/0632 ,  H04J3/07 ,  H04L7/005 ,  H04L7/02 ,  H04L69/324 ,  H04L2007/045

摘要： A method for adapting the rates of a certain number of asynchronous HDLC channels (15) to a single clock domain suited for interfacing with an HDLC processor (13) through a synchronous pseudo-TDM interface (14) in which the HDLC channels are multiplexed in time and vice versa in the opposite direction. In one direction the algorithm is based on the writing of the HDLC channels in a dedicated buffer (17) and in reading these buffers with a common synchronous clock just above the expected maximum HDLC rate. The under-run condition is avoided by inserting neutral information between the end byte and the start byte of the HDLC packets when this is suggested by the buffer fill monitoring function. A simple function to locate the first and last bytes of each HDLC packet read by the buffer is hence used in combination with the buffer fill monitoring function. The algorithm is also suited in the opposite direction in which different asynchronous physical lines receive their HDLC channels from a synchronous TDM-type interface on condition that this interface clock domain be just below the minimum expected HDLC output rate. In this case also the under-run conditions are avoided by insertion of neutral data after having used the same algorithm described above. Adaptation devices and a telecommunications card using them are also proposed.

公开(公告)号：EP1815713B1

公开(公告)日：2008-07-23

申请号：EP05817090.3

申请日：2005-11-10

申请人： National University of Ireland Galway

发明人： CUCOS, Alex ,  CORCORAN, Peter Cregg

IPC分类号： H04R27/00 ,  H04J3/07

CPC分类号： H04R27/00 ,  H04J3/07 ,  H04R2227/003 ,  H04R2227/005 ,  H04R2420/07

摘要： A server is arranged to distribute at least one stream of audio data correspo ding to an audio signal to two or more speakers across a network. Each speaker includes a respective clock for regenerating the audio signal from the audio data. For each speaker, the sever determines a relative rate of the speaker clock to a real time rate; and for each stream of data provided to a speaker, the server determines from a respective relative rate, respective samples of the audio signal to be altered in accordance with said relative rate. The streams are altered accordingly and transmitted across the network.

公开(公告)号：EP1804440A4

公开(公告)日：2008-02-27

申请号：EP06722051

申请日：2006-03-15

申请人： HUAWEI TECH CO LTD

发明人： JI KUIWEN ,  SHI LEI

IPC分类号： H04L12/56 ,  H04J3/07 ,  H04J3/16

CPC分类号： H04J3/076 ,  H04J3/1611

摘要： A method and circuit for acquiring an asynchronously de-map clock comprises: firstly, processing and acquiring a smooth clock with uniform gaps, according to the data needing the de-map process and the corresponding clock signal; then, by making a phase locking process according to the signal indicating data reading and writing status of FIFO, acquiring the perfect clock signal needing de-map process. Therefore, the present invention can efficiently filter a number of flutters generated form the process of the asynchronously map and the de-map, and ensure the high-powered clock output. The present invention can make OTN map to SDH, and also SDH map to the other processes of the asynchronously map and de-map such as OTN etc, so as to efficiently improve the capability of the data de-map process.

公开(公告)号：EP0987849A4

公开(公告)日：2007-04-25

申请号：EP98905638

申请日：1998-02-25

申请人： SHARP KK

发明人： OKAMOTO NAOKI

IPC分类号： H04J3/07 ,  H04L1/00 ,  H04B1/7103 ,  H04J3/06 ,  H04J13/00 ,  H04L1/18 ,  H04L7/04

CPC分类号： H04J13/00 ,  H04J3/0602 ,  H04J3/07 ,  H04L7/041

摘要： A direct spread spectrum communication system in accordance with a delayed multiplex mode in which improvement in correlation and improvement in error rate can be perfectly realized in any data length. A data generating section (2) has means for appending an additional bit so as to generate an integral multiple of the multiple number in generating information to be transmitted from data received from an upper layer (1) referred to as a MAC layer. This means learns the symbol length of a data part from information obtained from the upper layer (1), and knows the symbol length of a bit synchronization section, a frame synchronization section and a various information section which should be originally appended as a packet. Therefore, the number of additional bits such that the total number of symbols amounts to an integral multiple of the multiplex number is added before the frame synchronization section. A bit addition section may be inserted before the start of data entry, or at the last part of the data, that is, a lost part.

公开(公告)号：EP1770886A1

公开(公告)日：2007-04-04

申请号：EP06000472.8

申请日：2006-01-11

申请人： Fujitsu Ltd.

发明人： Fukumitsu, Katsumi ,  Ibukuro, Sadao c/o Fujitsu Microel. Solutions Ltd.

IPC分类号： H04J3/16 ,  H04J3/07

CPC分类号： H04J3/1611 ,  H04J3/07

摘要： A signal multiplexing apparatus has an OPU/ODU processing unit 4 putting a local protocol signal into an OPU/ODU signal, an ODTU processing unit 5 generating an ODTU signal from the OPU/ODU signal, a read-out position detecting unit 3 detecting a read-out position at the time that the OPU-ODU processing unit 4 reads out the local protocol signal, and a stuff allocation controlling unit 6 allocating a stuff control amount to be used when the OPU/ODU processing unit 4 puts the local protocol signal into the OPU/ODU signal and a stuff control amount to be used when the ODTU processing unit 5 generates the ODTU signal, on the basis of the read-out position detected by the read-out position detecting unit 3. The signal multiplexing apparatus can effectively absorb an amount of fluctuation in bit rate when asynchronously multiplexing the local protocol signal such as a 10GE signal in an optical transport network.

摘要翻译： 信号复用装置具有OPU / ODU处理单元4，将本地协议信号放入OPU / ODU信号，ODTU处理单元5从OPU / ODU信号产生ODTU信号，读出位置检测单元3检测 在OPU-ODU处理单元4读出本地协议信号时的读出位置以及当OPU / ODU处理单元4放置本地协议信号时分配要使用的填充控制量的填充分配控制单元6 根据由读出位置检测单元3检测到的读出位置，在ODTU处理单元5生成ODTU信号时，进入OPU / ODU信号和要使用的填充控制量。信号复用装置 在光传输网络中异步复用诸如10GE信号的本地协议信号时，有效地吸收了比特率的波动量。

公开(公告)号：EP0708541B1

公开(公告)日：2006-09-20

申请号：EP95202717.5

申请日：1995-10-10

申请人： LUCENT TECHNOLOGIES INC.

发明人： Urbansky, Ralph, Dr. Ing., c/o Philips

IPC分类号： H04J3/07

CPC分类号： H04J3/076

公开(公告)号：EP1482665A3

公开(公告)日：2006-08-23

申请号：EP04291346.7

申请日：2004-05-28

申请人： Lycium Networks (B.V.I.) Ltd

发明人： Goren, Motti ,  Cohen, Ron ,  Wulich, Dov

IPC分类号： H04J3/06 ,  H04J3/07 ,  H04J3/16

CPC分类号： H04J3/1611 ,  H04J3/0623 ,  H04J3/0632 ,  H04J3/073 ,  H04J3/1617 ,  H04L2012/5649 ,  H04L2012/5663 ,  H04L2012/5674

摘要： An adaptive rate management method and system for adapting a receiver rate to a transmission rate in a packet switch network comprises determining an error value at a sample rate, obtaining an updated accumulator value based on said error value E s at a decimated sample rate, and generating an appropriate rate command and changing said accumulator value at the decimated rate based on the updated accumulator value. The method may be adapted for either adapter point management or bit stuffing. When applied to adapter point management (APM), the method generates pointer adjustments for rate management. In a frequency locked APM preferred embodiment of the method and system, pointer adjustments in an interval are generated at a constant rate based on an average pointer adjustment value calculated in previous intervals.

公开(公告)号：EP1560355A1

公开(公告)日：2005-08-03

申请号：EP04027288.2

申请日：2004-11-17

申请人： Samsung Electronics Co., Ltd.

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

IPC分类号： H04J3/16 ,  H04J3/07

CPC分类号： H04N21/2365 ,  H04J3/07 ,  H04J3/1694 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/4347 ,  H04N21/4348

摘要： A TDM (Time Division Multiplexing) frame applicable to digital broadcast data transmission in an FTTH (Fiber To The Home) system and a method for transmitting and receiving the TDM frame is disclosed. The TDM frame and methods are applicable to transmit a plurality of digital broadcast data units having different synchronous clocks using a simple format. The TDM frame for multiplexing digital broadcast and communication signals having different synchronous signals in a broadcast/communication convergence system using an FTTH system comprises a framing bit field for identifying a start and end of the TDM frame seamlessly provided; two MPTS (Multiple-Program Transport Stream) fields respectively having at least one bit assigned for digital broadcast data transmission wherein an amount of input digital broadcast data is adjusted according to a difference between a multiplexing rate and an input rate associated with the digital broadcast data in the digital broadcast data transmission; and a fast Ethemet field having at least one bit assigned for communication data transmission.

摘要翻译： 适用于数字广播数据传输的TDM（时分复用）帧，FTTH（光纤到户）的系统和用于发送和接收的TDM帧的方法是游离缺失盘。 所述TDM帧和方法适用于传送具有使用简单的格式不同的同步时钟的数字广播数据单元的复数。 用于使用FTTH系统中的广播/通信会聚系统具有不同的同步信号复用的数字广播和通信信号的TDM帧包括成帧位字段用于鉴定无缝提供的TDM帧的开始和结束; 2个MPTS（多节目传输流）字段分别具有分配的用于数字广播数据传输worin速率输入的数字广播数据的量的至少一个比特被调整雅丁到与数字广播数据相关联的复用和输入速率之间的差 在数字广播的数据传输; 和具有分配用于通信数据传输的至少一个比特几乎以太网现场。

公开(公告)号：EP0995282A4

公开(公告)日：2005-07-06

申请号：EP98935772

申请日：1998-07-17

申请人： INNOVA CORP

发明人： CASTAGNA PETER ,  RANDALL DAVID

IPC分类号： H04J3/06 ,  H04J3/07

CPC分类号： H04J3/0608 ,  H04J3/073

摘要： A method and apparatus for determining synchronization and loss of synchronization in a high speed multiplexed data system. The system also includes a plurality of justification control bits and a backwards compatibility flag that allows the system to operate with older systems that have fewer justification control bits.

公开(公告)号：EP0935362A3

公开(公告)日：2005-02-02

申请号：EP99440017.4

申请日：1999-01-29

申请人： ALCATEL

发明人： Wolf, Michael ,  Dive, Geoffrey

IPC分类号： H04J3/07

CPC分类号： H04J3/0623 ,  H04J3/076 ,  H04J2203/0094 ,  Y10S370/906 ,  Y10S370/907 ,  Y10S370/916

摘要： Eine Synchronisiereinrichtung (SYNC) für ein synchrones digitales Nachrichtenübertragungssystem (SDH) dient dazu, eine synchrones Ausgangssignales (STM-N), das aus aufeinanderfolgenden, auf einen Rahmentakt synchronisierten Transportmodulen besteht, aus einem digitalen Eingangssignal (PDH) zu erzeugen. Die Synchronisiereinrichtung (SYNC) weist folgendes auf: Eine Empfangseinheit (SI) zum Empfangen des Eingangssignales (PDH), Packetiereinrichtung (PAK) zum Verpacken des Eingangssignal in Untereinheiten (VC-N) der Transportmodule, einen Pufferspeicher (BUF), ein Schreibmittel (WM) zum Schreiben von Datenbits des Eingangssignales (PDH) aus den Untereinheiten (VC-N) in den Pufferspeicher (BUF) mit einem Schreibtakt (WCLK), ein Lesemittel (RM) zum Auslesen von Datenbits aus dem Pufferspeicher mit einem Lesetakt (RCLK) um das Ausgangssignal zu bilden und eine Sendeeinheit (SO) zum Senden des synchronen Ausgangssignales (STM-N). Dabei ist die effektive Bitrate der Untereinheiten gegenüber dem standardisierten Wert erniedrigt oder erhöht, indem der Schreibtakt (WCLK) niedriger gewählt ist als der Lesetakt (RCLK).