Energy Efficiency Ethernet with Assymetric Low Power Idle
    1.
    发明申请
    Energy Efficiency Ethernet with Assymetric Low Power Idle 有权
    节能低功率以太网与低功耗空闲

    公开(公告)号:US20120320771A1

    公开(公告)日:2012-12-20

    申请号:US13478228

    申请日:2012-05-23

    IPC分类号: H04L12/26 H04W52/02

    摘要: Energy efficient Ethernet with asymmetric low power idle. Low power idle mode is typically leveraged when both direction of a link do not have data traffic to transmit. Such a requirement reduces the application of low power idle due to the frequent existence of data traffic in only one direction. An asymmetric low power idle mode enables reduction in power consumption and signal emissions even when one direction has data traffic to transmit.

    摘要翻译: 节能以太网具有不对称低功耗空闲。 当链路的两个方向都没有要传输的数据流量时,通常利用低功耗空闲模式。 这样的要求降低了由于在一个方向上频繁存在数据业务而导致的低功率空闲的应用。 不对称的低功率空闲模式能够降低功耗和信号发射,即使一个方向具有要发送的数据流量。

    System and method of signal wave shaping for spectrum control of an OFDM signal
    5.
    发明授权
    System and method of signal wave shaping for spectrum control of an OFDM signal 有权
    用于OFDM信号频谱控制的信号波整形系统和方法

    公开(公告)号:US07215715B2

    公开(公告)日:2007-05-08

    申请号:US09900087

    申请日:2001-07-06

    IPC分类号: H04K1/02 H04K1/10

    CPC分类号: H04L27/2626 H04L27/2644

    摘要: A system and method of controlling the spectrum of an orthogonal frequency division multiplexing (OFDM) signal. The method comprises receiving an input frame of data samples to be modulated onto orthogonal multi-carrier signals, performing frequency domain filtering and spectrum masking on the input frame of data samples, and modulating the respective frequency modified data samples onto a plurality of carriers. Such a system may include an over sampling logic to over sample the input data to increase the frequency resolution of the output spectrum, a wave shaping filter to perform frequency domain filtering of the input data, a spectrum mask to further modify the spectrum of the output signal, and an inverse fast Fourier transform (IFFT) to generate the modulated orthogonal multi-carrier signal. Another embodiment entails controlling the spectrum of the output OFDM signal by performing time-domain filtering.

    摘要翻译: 一种控制正交频分复用(OFDM)信号的频谱的系统和方法。 该方法包括接收要调制到正交多载波信号上的数据采样的输入帧,对数据采样的输入帧执行频域滤波和频谱掩蔽,并将各个频率修正的数据样本调制到多个载波上。 这样的系统可以包括过采样逻辑以对输入数据进行过采样以增加输出频谱的频率分辨率,波形整形滤波器以对输入数据进行频域滤波,频谱掩模以进一步修改输出的频谱 信号和快速傅里叶逆变换(IFFT),以产生调制的正交多载波信号。 另一个实施例需要通过执行时域滤波来控制输出OFDM信号的频谱。

    System, method and apparatus for adaptive video surveillance over power lines
    7.
    发明申请
    System, method and apparatus for adaptive video surveillance over power lines 失效
    用于电力线自适应视频监控的系统,方法和装置

    公开(公告)号:US20060050642A1

    公开(公告)日:2006-03-09

    申请号:US10935175

    申请日:2004-09-08

    IPC分类号: H04L12/26

    CPC分类号: H04B3/542 H04L12/5692

    摘要: Video surveillance systems have special requirements with respect to networking and remote access functionality. Conventional communication links do not necessarily meet these requirements. Power line channels, accessible via power line modems, do, in some cases, meet the requirements of video surveillance systems where conventional communication links do not. The present invention provides a flexible and reliable video surveillance system that includes networking and remote access capabilities employing power line communication channels.

    摘要翻译: 视频监控系统对网络和远程访问功能有特殊要求。 常规的通信链路不一定符合这些要求。 在某些情况下,通过电力线调制解调器可以访问的电力线路通道可以满足传统通信链路没有的视频监控系统的要求。 本发明提供了一种灵活可靠的视频监控系统,其包括使用电力线通信信道的组网和远程接入能力。

    System, method and apparatus for adaptive video surveillance over power lines
    9.
    发明授权
    System, method and apparatus for adaptive video surveillance over power lines 失效
    用于电力线自适应视频监控的系统,方法和装置

    公开(公告)号:US07466650B2

    公开(公告)日:2008-12-16

    申请号:US10935175

    申请日:2004-09-08

    IPC分类号: H04J1/16 H04L5/22

    CPC分类号: H04B3/542 H04L12/5692

    摘要: Video surveillance systems have special requirements with respect to networking and remote access functionality. Conventional communication links do not necessarily meet these requirements. Power line channels, accessible via power line modems, do, in some cases, meet the requirements of video surveillance systems where conventional communication links do not. The present invention provides a flexible and reliable video surveillance system that includes networking and remote access capabilities employing power line communication channels.

    摘要翻译: 视频监控系统对网络和远程访问功能有特殊要求。 常规的通信链路不一定符合这些要求。 在某些情况下,通过电力线调制解调器可以访问的电力线路通道可以满足传统通信链路没有的视频监控系统的要求。 本发明提供了一种灵活可靠的视频监控系统,其包括使用电力线通信信道的组网和远程接入能力。

    Ethernet physical layer device using time division duplex
    10.
    发明授权
    Ethernet physical layer device using time division duplex 有权
    以太网物理层设备采用时分双工

    公开(公告)号:US09001714B2

    公开(公告)日:2015-04-07

    申请号:US13300996

    申请日:2011-11-21

    IPC分类号: H04L5/14 H04L12/403

    摘要: An Ethernet physical layer device using time division duplex. A time division duplex frame can be defined with uplink and downlink transmission periods. These defined uplink and downlink transmission periods can be adjusted based on bandwidth and latency considerations on the network link.

    摘要翻译: 使用时分双工的以太网物理层设备。 可以用上行链路和下行链路传输周期来定义时分双工帧。 这些定义的上行链路和下行链路传输周期可以基于网络链路上的带宽和等待时间考虑进行调整。