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公开(公告)号：EP2777211A4
公开(公告)日：2015-03-25
申请号：EP12848224
申请日：2012-11-07
发明人： BRANSCOMB BRIAN
CPC分类号： H04L45/00 , H04J3/0667 , H04J3/0697 , H04L45/74 , H04L63/0428 , H04L63/162
摘要： A physical layer device provides both timestamp processing and security processing. The timestamp processing may be PTP processing according to IEEE Std. 1588 and/or OAM processing according to ITU-T Recommendation Y.1731. The security processing may be MACsec processing according to IEEE Std. 802.1AE. The timestamp processing may delay some packets to avoid impairing accuracy of timing information. For example, the accuracy of timing information could be impaired when a packet containing the timing information is delay due to additional bits added to a preceding packet to include a security tag and integrity check value.
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公开(公告)号：EP1305883A4
公开(公告)日：2006-08-23
申请号：EP01946379
申请日：2001-06-14
发明人： SCHMITT ANDREW , BOGGESS TIM
CPC分类号： H04L29/06 , H04J3/14 , H04J3/1611 , H04J2203/0051 , H04L69/08
摘要： A mapping operation (30) maps identified bytes of a transport overhead of a data stream to other unused areas of the overhead. A de-mapping operation (33) maps the bytes mapped by the mapping operation (30) back to the locations from which the bytes were moved. A passing operation (35) is used to handle data stream transitions in which multiple tributaries are multiplexed into or out of a single connecting data stream
摘要翻译： 映射操作将数据流的传输开销的确定字节映射到开销的其他未使用的区域。 解映射操作将映射操作映射的字节映射回移动字节的位置。 通过操作用于处理数据流转换，其中多个支路复用到单个连接数据流中或从单个连接数据流中复用。
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公开(公告)号：EP1766776A4
公开(公告)日：2010-12-29
申请号：EP05760608
申请日：2005-06-09
发明人： PAVAN SHANTHI
CPC分类号： H04L25/03031 , H04L25/03038 , H04L2025/03356 , H04L2025/03617
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公开(公告)号：EP1464144A4
公开(公告)日：2010-09-22
申请号：EP02782269
申请日：2002-11-07
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公开(公告)号：EP2847921A4
公开(公告)日：2015-10-07
申请号：EP13788070
申请日：2013-05-13
IPC分类号： H04J3/06
CPC分类号： H04W56/001 , H04J3/0664 , H04J3/0673 , H04J3/0682 , H04J3/0697 , H04L12/4625 , H04W56/005 , H04W56/0075
摘要： Precision Timing Protocol (PTP) related functions for use in packet communications carried in part by a microwave communications link include setting of time of day values across the microwave link and providing transparent clock functions. The PTP functions may be used for synchronizing radio base stations in a cellular network. The transparent clock can bridge Ethernet switches associated with microwave stations providing the microwave communications link.
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公开(公告)号：EP1307820A4
公开(公告)日：2007-05-02
申请号：EP01942239
申请日：2001-06-06
IPC分类号： H04Q3/52 , G02B6/35 , G06F13/40 , H01L23/02 , H01L23/48 , H01L23/538 , H04L12/56 , H04Q1/00 , G06F13/38
CPC分类号： H01L23/5382 , G06F13/4022 , H01L2224/16225 , H01L2924/15311 , H01L2924/3011 , H04L49/101 , H04L49/65
摘要： A crosspoint switch including a switch matrix modules (101) and programming features (109). A switch matrix modules include input lines tied to inputs of the switch through recompensation networks (201, 203). The programming features include user initialization states and reduced and grouping command configuration operations.
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公开(公告)号：EP1023793A4
公开(公告)日：2005-08-03
申请号：EP99943914
申请日：1999-08-25
CPC分类号： H04L25/063 , H04L7/0037 , H04L7/033 , H04L7/0334
摘要： A microprocessor (45) controlled data recovery unit with an adjustable sampling and signal comparison level. The data recovery unit includes a data channel (47a) and a monitor channel (47b). The monitor channel samples an incoming data stream in a varying manner. The results of the sampling in the monitor channel are used to adjust the sampling and comparing of the signal in the data channel. The data recovery unit includes a PLL (35) based clock recovery unit in one embodiment, and in another embodiment the clock signal is derived by the microprocessor.
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公开(公告)号：EP1025639A4
公开(公告)日：2001-04-04
申请号：EP99942449
申请日：1999-08-20
IPC分类号： H03F3/45 , H03F1/34 , H03F3/08 , H03G3/30 , H04B10/158 , H03F1/36 , H01J40/14 , H03G1/00 , H04B10/06
CPC分类号： H03G3/3084 , H04B10/6931
摘要： A transimpedance amplifier (54) in an optical communication system is provided with automatic gain control (AGC) (56) for increasing the input operating range while maintaining high stability. A photodetector (58) is used to convert an optical signal into a differential current for the transimpedance amplifier (54). An AGC circuit (56) has a gain control device connected across the differential input of the transimpedance amplifier (54). The gain control device has an impedance that varies as a function of a voltage at the differential output of the transimpedance (54). Preferably, the gain control device is a FET having a drain coupled to one of the differential inputs, a source coupled to the other differential input, and a gate for receiving an AGC voltage, the AGC voltage being a function of the voltage at the differential output.
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公开(公告)号：EP2807785A4
公开(公告)日：2015-10-28
申请号：EP12852168
申请日：2012-11-16
CPC分类号： H04J3/0658 , H04J3/0667 , H04J3/0697 , H04L43/0858
摘要： A slave communication device may transmit a packet to the master communication device, with the packet including a transmission time field and a correction field. The transmission time field may contain a value indicative of an approximate time of transmission of the packet by the slave communication device, and the correction field may contain a value indicative of a difference between the approximate time of transmission and an actual time of transmission of the packet by the slave communication device.
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10.发明公开METHOD FOR SWITCHING MASTER/SLAVE TIMING IN A 1000BASE-T LINK WITHOUT TRAFFIC DISRUPTION 审中-公开一种用于在1000BASE-T-LINK主/从时序开关电压而不中断交通
公开(公告)号：EP2524468A4
公开(公告)日：2015-04-29
申请号：EP11733336
申请日：2011-01-12
发明人： BARNETTE JIM , CHADHA MANDEEP , MCINTOSH JAMES
CPC分类号： H04J3/0641 , H04L7/0337 , H04L12/42 , H04L12/437
摘要： A method switches master/slave timing in a communication network without traffic disruption. The method includes a master device informing a slave of timing loss. The master device additionally begins transmitting with timing from a local reference clock and begins receive timing recovery. The slave freezes its receive timing recovery and locks its transmit clock. The master device transitions its transmit timing to use the recovered receive clock. The slave gradually switches to transmitting using its local clock signal. The method may be used in synchronous Ethernet networks.
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