公开(公告)号：US07835402B2

公开(公告)日：2010-11-16

申请号：US11792630

申请日：2005-11-24

申请人： Armin Erich ,  Stephan Schüler

发明人： Armin Erich ,  Stephan Schüler

IPC分类号： H04J3/06

CPC分类号： H04J3/0697 ,  H04J3/0658

摘要： A synchronization module for providing synchronization messages to be sent with a time stamp in accordance with the PTP protocol of standard IEEE 1588 is provided. The synchronization module comprises a program module for generating a synchronization message to be sent and for providing the synchronization message with a first time stamp, and a hardware-implemented time stamp module which receives synchronization messages from the program module and forwards them in accordance with the PTP protocol. The time stamp module comprises a real time clock, a message detector for recognizing a synchronization message by its difference in relation to other messages and a message manipulator for overwriting the first time stamp in a synchronization message recognized by the message detector with a second time stamp actually retrieved from the real time clock.

摘要翻译： 提供了一种同步模块，用于根据标准IEEE 1588的PTP协议提供要与时间戳一起发送的同步消息。 同步模块包括用于生成要发送的同步消息和用于提供具有第一时间戳的同步消息的程序模块，以及硬件实现的时间戳模块，其从程序模块接收同步消息并根据 PTP协议 时间戳模块包括实时时钟，消息检测器，用于通过与其他消息相关的差异来识别同步消息，以及消息操纵器，用于在由消息检测器识别的同步消息中用第二时间戳覆盖第一时间戳 实际上从实时时钟检索。

公开(公告)号：US08332867B2

公开(公告)日：2012-12-11

申请号：US12224240

申请日：2006-02-22

申请人： Franz-Josef Götz ,  Rolf Knoerzer ,  Stephan Schüler

发明人： Franz-Josef Götz ,  Rolf Knoerzer ,  Stephan Schüler

IPC分类号： G06F3/00 ,  G06F9/44 ,  G06F9/46 ,  G06F13/00

CPC分类号： H04J3/0697 ,  H04J3/0667

摘要： Upon reception of a message which is relevant to synchronization, the circuitry in a device forms a piece of reception-time information and this information is inserted into or appended to the received message and forwarded such that the reception-time information can be received by at least one synchronization application in the device. When a message is transmitted, the circuitry in the device forms a piece of transmission-time information, and this information is sent to at least one synchronization application initializing the message in the device. A fundamental advantage can be seen in that the economic outlay, particularly the outlay in terms of circuitry, for implementing the synchronization of the clocks and the determination of the communication-network or transmission-medium delay times, particularly on the basis of the IEEE standard 1588, m is substantially reduced.

摘要翻译： 在接收到与同步相关的消息时，设备中的电路形成一段接收时间信息，并将该信息插入或附加到所接收的消息中，并转发，使得接收时间信息可以在 设备中至少有一个同步应用程序。 当发送消息时，设备中的电路形成一段传输时间信息，并将该信息发送到初始化设备中的消息的至少一个同步应用。 可以看出，一个根本的优点在于，特别是基于IEEE标准，经济支出，特别是用于实现时钟同步和确定通信网络或传输介质延迟时间的电路方面的费用 1588，m大大减小。

公开(公告)号：US08386765B2

公开(公告)日：2013-02-26

申请号：US11921130

申请日：2006-03-24

申请人： Steffen Fries ,  Jean Georgiades ,  Stephan Schüler

发明人： Steffen Fries ,  Jean Georgiades ,  Stephan Schüler

IPC分类号： H04L29/06 ,  G06F1/12

CPC分类号： H04L63/123

摘要： There is described a method for transmitting synchronization messages, for example PTP messages of the IEEE 1588 standard, the PTP message being inserted into a data packet in line with the Internet Protocol, the data packet having an IP header, and the data packet having a UDP header. In this case, for the encrypted transmission on the PTP message, the data packet is addressed to a UDP port that is reserved for encrypted PTP messages, the data packet is provided with an additional S-PTP header that is provided for encryption, the PTP message is extended with a pseudo random number, and the PTP message is encrypted together with the pseudo random number.

摘要翻译： 描述了用于发送同步消息的方法，例如IEEE 1588标准的PTP消息，PTP消息被插入到符合因特网协议的数据分组中，数据分组具有IP报头，并且数据分组具有 UDP头。 在这种情况下，对于PTP消息上的加密传输，数据包被寻址到为加密的PTP消息保留的UDP端口，数据包被提供有提供加密的附加S-PTP头，PTP 消息以伪随机数进行扩展，PTP消息与伪随机数一起加密。

公开(公告)号：US20090204811A1

公开(公告)日：2009-08-13

申请号：US11921130

申请日：2006-03-24

申请人： Steffen Fries ,  Jean Georgiades ,  Stephan Schüler

发明人： Steffen Fries ,  Jean Georgiades ,  Stephan Schüler

IPC分类号： H04L9/32 ,  H04J3/06

CPC分类号： H04L63/123

摘要： There is described a method for transmitting synchronization messages, for example PTP messages of the IEEE 1588 standard, the PTP message being inserted into a data packet in line with the Internet Protocol, the data packet having an IP header, and the data packet having a UDP header. In this case, for the encrypted transmission on the PTP message, the data packet is addressed to a UDP port that is reserved for encrypted PTP messages, the data packet is provided with an additional S-PTP header that is provided for encryption, the PTP message is extended with a pseudo random number, and the PTP message is encrypted together with the pseudo random number.

摘要翻译： 描述了用于发送同步消息的方法，例如IEEE 1588标准的PTP消息，PTP消息被插入到符合因特网协议的数据分组中，数据分组具有IP报头，并且数据分组具有 UDP头。 在这种情况下，对于PTP消息上的加密传输，数据包被寻址到为加密的PTP消息保留的UDP端口，数据包被提供有提供加密的附加S-PTP头，PTP 消息以伪随机数进行扩展，PTP消息与伪随机数一起加密。