公开(公告)号：US09240855B1

公开(公告)日：2016-01-19

申请号：US14141173

申请日：2013-12-26

Applicant: Google Inc.

Inventor： Cedric F. Lam ,  James F. Kelly ,  Austin B. Schuh

IPC: H04J14/00 ,  H04J14/02 ,  G01M11/00

CPC classification number: H04J14/0227 ,  G01M11/3109 ,  H04B10/071 ,  H04J14/0212 ,  H04Q11/0067 ,  H04Q2011/0083

Abstract: Implementations of techniques and systems are disclosed for detecting a fiber fault in a point-to-point optical access network based on optical time domain reflectometry (“OTDR”) measurements. The techniques include identifying loss of service between a central office (“CO”) and a given optical network unit (“ONU”) of a plurality of ONUs. In response to the identifying the loss of service, configuring a test signal distribution unit to optically couple an OTDR unit to a selected subset of the point-to-point fiber links which includes the given ONU. An optical test signal is launched from the OTDR unit into the selected subset of the point-to-point fiber links via the test signal distribution unit. Test signal reflections are received from each of the point-to-point fiber links within the selected subset as a reflection signature, which is analyzed to identify a location of the fiber fault.

Abstract translation: 公开了用于基于光时域反射测量（“OTDR”）测量来检测点对点光接入网络中的光纤故障的技术和系统的实现。 这些技术包括识别中心局（“CO”）与多个ONU的给定光网络单元（“ONU”）之间的服务丢失。 响应于识别服务丢失，配置测试信号分配单元将OTDR单元光学地耦合到包括给定ONU的点对点光纤链路的选定子集。 光测试信号通过测试信号分配单元从OTDR单元发射到点对点光纤链路的所选子集中。 从所选择的子集内的每个点对点光纤链路接收测试信号反射作为反射特征，被分析以识别光纤故障的位置。

公开(公告)号：US20150186509A1

公开(公告)日：2015-07-02

申请号：US14143052

申请日：2013-12-30

Applicant: Google Inc.

Inventor： James F. Kelly ,  Daniel R. Sandler ,  Glenn Kasten

IPC: G06F17/30 ,  G10L19/018

CPC classification number: G06F1/3206 ,  G06F1/3287 ,  Y02D10/171

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for power-efficient music playlist identification. In one aspect, a method includes the actions of receiving an audio recording of an item of media content. The actions further include determining, based on the audio recording, an identifier associated with the item of media content, and a timestamp. The actions further include determining, based on the identifier of the item of media content and the timestamp, an amount of remaining time that the item of media content has to play. The actions further include providing an indication for one or more components of a computing device to deactivate. The actions further include determining that the amount of time has elapsed. The actions further include providing an indication for the one or more components of the computing device to reactivate.

Abstract translation: 方法，系统和装置，包括在计算机存储介质上编码的计算机程序，用于功率高效的音乐播放列表识别。 一方面，一种方法包括接收媒体内容项目的音频记录的动作。 动作还包括基于音频记录来确定与媒体内容的项目相关联的标识符和时间戳。 动作还包括基于媒体内容的项目的标识符和时间戳来确定媒体内容的项目必须播放的剩余时间量。 所述动作进一步包括为停用计算设备的一个或多个组件提供指示。 该动作进一步包括确定时间量已经过去。 该动作进一步包括为计算设备的一个或多个组件提供重新激活的指示。