DC Power Line Synchronization for Automotive Sensors
    3.
    发明申请
    DC Power Line Synchronization for Automotive Sensors 有权
    汽车传感器直流电源线同步

    公开(公告)号:US20160352388A1

    公开(公告)日:2016-12-01

    申请号:US14724487

    申请日:2015-05-28

    Inventor: Frank Lane

    Abstract: A network such as an in-vehicle powerline communication (PLC) network may allow PLC nodes to communicate over existing powerlines. Provided in the present disclosure are exemplary techniques for synchronizing network nodes (e.g., PLC nodes) with a network clock for the network so that data generated at each node may share a common time reference. For example, a synchronization (sync) signal may be generated by a master node and broadcast to other PLC nodes over a PLC channel, which may also carry data frames to and from other PLC nodes. The network clock may be autonomously generated by the master node or may be tied to an external clock.

    Abstract translation: 诸如车载电力线通信(PLC)网络的网络可以允许PLC节点通过现有电力线进行通信。 在本公开中提供的是用于将网络节点(例如,PLC节点)与网络的网络时钟同步的示例性技术,使得在每个节点处生成的数据可以共享公共时间参考。 例如,同步(同步)信号可以由主节点产生并通过PLC信道广播到其他PLC节点,PLC信道也可以向其它PLC节点携带数据帧。 网络时钟可以由主节点自主生成或者可以被连接到外部时钟。

    Phase relationship control for control channel of a multimedia communication link
    4.
    发明授权
    Phase relationship control for control channel of a multimedia communication link 有权
    多媒体通信链路控制信道的相位关系控制

    公开(公告)号:US09490962B2

    公开(公告)日:2016-11-08

    申请号:US14470804

    申请日:2014-08-27

    Abstract: A multimedia system for data communications. A source device communicates over a full duplex control channel of a multimedia communication link using time domain multiplexed (TDM) frames having n time slots per frame. The source device allocates a first time slot position to a virtual channel for data transmission by the source device over the full duplex control channel. A sink device communicates over the full duplex control channel of the multimedia communication link. The sink device allocates a second time slot position to the virtual channel for data transmission by the sink device over the full duplex control channel. A timing of the second time slot position is offset from a timing of the first time slot position by substantially n/2 time slots.

    Abstract translation: 一种用于数据通信的多媒体系统。 源设备使用具有每帧n个时隙的时域复用(TDM)帧在多媒体通信链路的全双工控制信道上进行通信。 源设备将虚拟信道的第一时隙位置分配给源设备通过全双工控制信道进行数据传输。 宿设备通过多媒体通信链路的全双工控制信道进行通信。 宿设备将虚拟信道的第二时隙位置分配给宿设备通过全双工控制信道进行数据传输。 第二时隙位置的定时偏离第一时隙位置的定时大致n / 2个时隙。

    Methods and systems of synchronizer selection
    6.
    发明授权
    Methods and systems of synchronizer selection 有权
    同步器选择方法与系统

    公开(公告)号:US09294263B2

    公开(公告)日:2016-03-22

    申请号:US14146654

    申请日:2014-01-02

    Abstract: A circuit includes a plurality of synchronizers to adapt a signal from a first clock domain to a second clock domain. Each synchronizer of the plurality of synchronizers includes a synchronizer input to receive the signal from the first clock domain and a synchronizer output to provide the signal as adapted to the second clock domain. The circuit also includes a multiplexer (mux) that includes a plurality of mux inputs and a mux output. Each mux input is coupled to the synchronizer output of a respective synchronizer of the plurality of synchronizers. The mux output provides the signal, as adapted to the second clock domain, from the synchronizer output of a selected synchronizer of the plurality of synchronizers.

    Abstract translation: 电路包括多个同步器,用于将来自第一时钟域的信号适配到第二时钟域。 多个同步器的每个同步器包括用于接收来自第一时钟域的信号的同步器输入和同步器输出以提供适合于第二时钟域的信号。 该电路还包括多路复用器(多路复用器),其包括多个多路复用器输入和多路复用器输出。 每个多路复用器输入耦合到多个同步器的相应同步器的同步器输出端。 多路复用器输出从多个同步器的所选同步器的同步器输出提供适应于第二时钟域的信号。

    Enhanced Communication Link Using Synchronization Signal as Link Command
    7.
    发明申请
    Enhanced Communication Link Using Synchronization Signal as Link Command 审中-公开
    增强的通信链路使用同步信号作为链路命令

    公开(公告)号:US20160072601A1

    公开(公告)日:2016-03-10

    申请号:US14483013

    申请日:2014-09-10

    CPC classification number: H04J3/0602 H04L5/14

    Abstract: A system communicating over a full duplex control channel of a multimedia communication link by using synchronization signals that may also function as a logical link command. Synchronization indicators are exchanged between two communicating devices for maintaining synchronization of a logical link. At least two different types of synchronization signals may be sent between the two devices as synchronization indicators. A first synchronization signal is used by default to maintain synchronization of a logical link. A second synchronization signal is used in place of the first synchronization signal to maintain synchronization of the logical link. The second synchronization signal may be used to imply a virtual link command to indicate that a device is ready to receive data or has successfully received data over the virtual link.

    Abstract translation: 通过使用也可以用作逻辑链路命令的同步信号在多媒体通信链路的全双工控制信道上进行通信的系统。 在两个通信设备之间交换同步指示符,以维持逻辑链路的同步。 可以在两个设备之间发送至少两种不同类型的同步信号作为同步指示符。 默认情况下使用第一同步信号来维持逻辑链路的同步。 使用第二同步信号代替第一同步信号以维持逻辑链路的同步。 第二同步信号可以用于暗示虚拟链路命令以指示设备准备好接收数据或已经通过虚拟链路成功接收到数据。

    Method and devices for packet selection
    8.
    发明授权
    Method and devices for packet selection 有权
    分组选择的方法和设备

    公开(公告)号:US09270607B2

    公开(公告)日:2016-02-23

    申请号:US14100328

    申请日:2013-12-09

    Abstract: This invention relates to packet selection techniques that can be used in conjunction with a clock recovery mechanism to mitigate the effects of packet delay variation on timing messages exchanged over a packet network, particularly when seeking to synchronize the time of a clock in a slave device to that of a master clock. The packet selection techniques can assist in reducing the noise in the recovered clock signal at the slave device, allowing recovery to a higher quality. Embodiments of the invention provide techniques based on extracting timing packets that create a constant interval between the arrival of selected packets at the slave device and on extracting timing packets which are closest to making the interval between arrival of the selected packets equal to the interval between the departure of the packets.

    Abstract translation: 本发明涉及可以与时钟恢复机制一起使用的分组选择技术,以减轻分组延迟变化对在分组网络上交换的定时消息的影响,特别是当寻求将从设备中的时钟的时间同步到 一个主时钟。 分组选择技术可以帮助减少从设备恢复的时钟信号中的噪声,从而允许恢复到更高的质量。 本发明的实施例提供了基于提取在从设备的所选分组到达之间创建恒定间隔的定时分组的技术,以及提取最接近于使所选分组的到达之间的间隔等于所述分组之间的间隔的定时分组 包的离开

    SYSTEM AND METHOD FOR REMOTE CLOCK ESTIMATION FOR RELIABLE COMMUNICATIONS
    9.
    发明申请
    SYSTEM AND METHOD FOR REMOTE CLOCK ESTIMATION FOR RELIABLE COMMUNICATIONS 有权
    用于可靠通信的远程时钟估计的系统和方法

    公开(公告)号:US20150381345A1

    公开(公告)日:2015-12-31

    申请号:US14315595

    申请日:2014-06-26

    CPC classification number: H04L7/04 H04J3/0602 H04J3/0667 H04L43/106

    Abstract: An electronic device is provided including a processor, a communications interface coupled to the processor, a memory coupled to the processor, and a module saved in the memory. The module configures the processor to receive a first communications packet from a remote device via the communications interface including information useful for estimating a clock offset of the remote device, and determine an upper bound of the clock offset of the remote device with respect to the electronic device based on the information.

    Abstract translation: 提供了一种电子设备,包括处理器,耦合到处理器的通信接口,耦合到处理器的存储器和保存在存储器中的模块。 该模块配置处理器以经由通信接口从远程设备接收包括对估计远程设备的时钟偏移有用的信息的第一通信分组,并确定远程设备相对于电子设备的时钟偏移的上限 设备基于该信息。

    Synchronization methods and apparatus
    10.
    发明授权
    Synchronization methods and apparatus 有权
    同步方法和装置

    公开(公告)号:US09204405B2

    公开(公告)日:2015-12-01

    申请号:US14101116

    申请日:2013-12-09

    Applicant: Itron, Inc.

    Abstract: Synchronization methods, apparatus and systems are disclosed. An example method includes storing, in memory of a device, schedule information indicating times at which the device is to listen for a sequential series of data frames, the schedule information further indicating a reference time at which transmission of the sequential series of data frames to the device is to be initiated; initiating a listening session at a first time of the schedule information according to a native clock of the device; identifying which of the data frames of the sequential series is received first during the listening session; and adjusting the native clock of the device based on the identified data frame.

    Abstract translation: 公开了同步方法,装置和系统。 一种示例性方法包括在设备的存储器中存储指示设备要监听数据帧序列的时间的调度信息,该调度信息还指示连续数据帧的传输到 该设备将被启动; 根据设备的本机时钟在调度信息的第一时间发起监听会话; 识别在听觉会话期间首先接收到顺序序列的数据帧中的哪一个; 以及基于所识别的数据帧来调整设备的本机时钟。

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