Amplitude-based anomaly detection
    1.
    发明授权
    Amplitude-based anomaly detection 有权
    基于振幅的异常检测

    公开(公告)号:US08806313B1

    公开(公告)日:2014-08-12

    申请号:US13480084

    申请日:2012-05-24

    IPC分类号: G06F11/00

    摘要: Systems and methods are disclosed herein for identifying an anomaly in a signal, where samples in the signal correspond to an amount of data flow in a network within a time interval, and an anomaly corresponds to at least one sample in the discrete signal having a likelihood value below a likelihood threshold. A historical probability distribution of the discrete signal is generated based on previously received samples. For each sample in a plurality of samples in the discrete signal, a likelihood is computed based at least in part on the historical probability distribution. A likelihood threshold is selected, and a set of consecutive samples is identified as an anomaly when each sample in the set has a computed likelihood below the likelihood threshold.

    摘要翻译: 本文公开了用于识别信号中的异常的系统和方法,其中信号中的采样对应于在时间间隔内的网络中的数据流量,并且异常对应于具有似然性的离散信号中的至少一个采样 值低于似然阈值。 基于先前接收的样本生成离散信号的历史概率分布。 对于离散信号中的多个样本中的每个样本,至少部分地基于历史概率分布来计算似然性。 选择似然阈值,并且当集合中的每个样本具有低于似然阈值的计算似然率时,将一组连续样本识别为异常。

    Data replacement policy
    2.
    发明授权
    Data replacement policy 有权
    数据更换政策

    公开(公告)号:US08868993B1

    公开(公告)日:2014-10-21

    申请号:US13446945

    申请日:2012-04-13

    申请人: Kevin Yu Xinyi Zhang

    发明人: Kevin Yu Xinyi Zhang

    IPC分类号: G06F11/00 H04L1/00

    CPC分类号: H04L1/0045

    摘要: Systems and methods are provided for estimating missing samples in a signal. A plurality of samples in the signal is received, and a respective sample corresponds to a respective sample location in a plurality of sample locations. A subset of sample locations representing missing samples in the signal is identified, and a first and a second threshold are determined. Each threshold is an integer number of samples, and the second threshold is greater than the first threshold. A first set of consecutive sample locations from the identified subset of sample locations is formed, and the missing samples in the first set of consecutive sample locations are replaced based on a comparison between a number of locations in the first set of consecutive locations, the first threshold, and the second thresholds.

    摘要翻译: 提供了系统和方法来估计信号中的丢失样本。 接收信号中的多个样本,并且相应样本对应于多个样本位置中的相应样本位置。 识别表示信号中缺失样本的样本位置的子集,并且确定第一和第二阈值。 每个阈值是整数个采样,第二个阈值大于第一个阈值。 形成来自所识别的采样位置子集的第一组连续采样位置,并且基于第一组连续位置中的多个位置之间的比较来替换第一组连续采样位置中的丢失样本,第一组 阈值和第二个阈值。

    Statistics-based anomaly detection

    公开(公告)号:US09628499B1

    公开(公告)日:2017-04-18

    申请号:US13569688

    申请日:2012-08-08

    申请人: Kevin Yu Xinyi Zhang

    发明人: Kevin Yu Xinyi Zhang

    摘要: Systems and methods are described herein for detecting an anomaly in a discrete signal, where samples in the signal correspond to amounts of data flow in a network within a time interval. The discrete signal is received, and a sequence of likelihoods corresponding to the sample values in the signal is generated. The likelihoods are based at least in part on a historical probability distribution of previously received sample values, and a likelihood is a probability of occurrence of a corresponding sample value in the signal. Likelihood change points are identified in the likelihood sequence, and the discrete signal is segmented into a plurality of segments at samples corresponding to the identified change points. A segment is identified as an anomaly based on a comparison between a statistic of the segment and a statistic of the historical probability distribution.

    Anomaly detection in a signal
    4.
    发明授权
    Anomaly detection in a signal 有权
    异常检测信号

    公开(公告)号:US09471544B1

    公开(公告)日:2016-10-18

    申请号:US13480042

    申请日:2012-05-24

    申请人: Kevin Yu Xinyi Zhang

    发明人: Kevin Yu Xinyi Zhang

    IPC分类号: G06F17/18

    CPC分类号: G06F17/18 G06K9/0053

    摘要: Systems and methods are disclosed herein for detecting an anomaly in a discrete signal, where a long-term trend of the discrete signal is identified. Samples in the signal correspond to a number of data packets arriving at a location in a network within a time interval. The long-term trend is subtracted from the discrete signal to obtain a detrended signal. A cyclic pattern is identified in the detrended signal and is subtracted from the detrended signal to obtain a residual signal. Anomaly detection is performed on the residual signal.

    摘要翻译: 本文公开了用于检测离散信号中的异常的系统和方法,其中识别离散信号的长期趋势。 信号中的采样对应于在时间间隔内到达网络中某个位置的数据分组数。 从离散信号中减去长期趋势,以获得去趋势信号。 在去激励信号中识别循环模式,并从去激励信号中减去以获得残留信号。 对残差信号执行异常检测。

    Apparatus and method for collimating diffused light using a compound holographic optical element
    5.
    发明授权
    Apparatus and method for collimating diffused light using a compound holographic optical element 有权
    使用复合全息光学元件准直漫射光的装置和方法

    公开(公告)号:US08976434B2

    公开(公告)日:2015-03-10

    申请号:US13339942

    申请日:2011-12-29

    IPC分类号: G02B5/32 G02B27/30

    CPC分类号: G02B5/32 G02B27/30

    摘要: A collimator can be made of a compound holographic optical element made of three holographic optical elements. The first reflection holographic optical element will have recorded within it continuous lens configured to receive light from a diffuse light beam and diffract the received light as a first collimated light beam. The second reflection holographic optical element will have recorded within it a regular hologram that is configured to permit the light from the diffuse light source to transmit through it to reach the first reflection holographic element, the second reflection holographic element having within it a second holographically reflective structure configured to receive the first collimated light beam and diffract the first collimated light beam as a second collimated light beam. The third transmission holographic optical element is configured to receive the second collimated light beam and diffract it as a third holographic light beam.

    摘要翻译: 准直器可以由三个全息光学元件制成的复合全息光学元件制成。 第一反射全息光学元件将记录在其连续透镜中,其被配置为接收来自漫射光束的光并将接收的光衍射为第一准直光束。 第二反射全息光学元件将在其内部记录有规则的全息图,该全息图被配置为允许来自漫射光源的光透过它传播到达第一反射全息元件,第二反射全息元件在其内具有第二全息反射 结构被配置为接收第一准直光束并且将第一准直光束衍射为第二准直光束。 第三透射全息光学元件被配置为接收第二准直光束并将其衍射为第三全息光束。

    Holographic Substrate-Guided Wave-Based See-Through Display
    6.
    发明申请
    Holographic Substrate-Guided Wave-Based See-Through Display 审中-公开
    全息基板引导波形透视显示

    公开(公告)号:US20100157400A1

    公开(公告)日:2010-06-24

    申请号:US12620538

    申请日:2009-11-17

    IPC分类号: G03H1/04 G02B5/32 G03H1/22

    摘要: A holographic substrate-guided wave-based see-through display can has a microdisplay, capable of emitting light in the form of an image. The microdisplay directs its output to a holographic lens, capable of accepting the light in the form of an image from the microdisplay, and capable of transmitting the accepted light in the form of an image. The holographic lens couples its output to an elongate transparent substrate, capable of accepting the light in the form of an image from the holographic lens at a first location, and transmitting the light in the form of an image along a length of the substrate by total internal reflection to a second location spaced from the first location, the elongate substrate being capable of transmitting the accepted light in the form of an image at the second location. The substrate couples out what it receives to a transparent holographic grating, capable of accepting the light transmitted from the elongate substrate and transmitting it to a location outside of the holographic grating as a viewable image.

    摘要翻译: 全息衬底导向的基于波浪的透视显示器可以具有能够以图像形式发光的微型显示器。 微显示器将其输出引导到全息透镜,能够从微显示器接受来自图像形式的光,并且能够以图像的形式传输被接受的光。 全息透​​镜将其输出耦合到细长的透明基板,其能够在第一位置处接收来自全息透镜的图像形式的光,并且沿着基板的长度以图像的形式传输光,总共 内部反射到与第一位置间隔开的第二位置,细长衬底能够以第二位置处的图像形式传送被接受的光。 衬底将其接收的物体与透明全息光栅耦合,能够接受从细长衬底传输的光并将其透射到全息光栅外部的位置作为可视图像。

    METHODS, SYSTEMS, AND COMPUTER PROGRAM PRODUCTS FOR PROVIDING MEDIA CHANNEL SERVICES
    7.
    发明申请
    METHODS, SYSTEMS, AND COMPUTER PROGRAM PRODUCTS FOR PROVIDING MEDIA CHANNEL SERVICES 有权
    提供媒体渠道服务的方法,系统和计算机程序产品

    公开(公告)号:US20090144786A1

    公开(公告)日:2009-06-04

    申请号:US11948679

    申请日:2007-11-30

    IPC分类号: H04N7/173 H04N5/445 H04N7/025

    摘要: Methods, systems, and computer program products for providing media channel services are disclosed. A method includes provisioning an Internet-Protocol (IP)-enabled media channel in response to a request to create a media channel account, which includes creating an account record for the media channel account, assigning a media device identifier to the account record, assigning a network address to the IP-based media channel, and storing the network address in the account record. The method also includes populating a storage system with editable and non-editable content. The editable content is received and controlled by a user of the media channel account via a media device, and the non-editable content is controlled by a network media services application. The method further includes creating and presenting a media channel page that includes the editable and non-editable content in response to a request by the user to initiate a session for the channel.

    摘要翻译: 公开了用于提供媒体频道服务的方法,系统和计算机程序产品。 一种方法包括:响应于创建媒体信道帐户的请求来提供基于因特网协议(IP)的媒体信道,其中包括创建媒体信道帐户的帐户记录,向媒体记录分配媒体设备标识符,分配 网络地址到基于IP的媒体频道,并将网络地址存储在帐户记录中。 该方法还包括使可编辑和不可编辑的内容填充存储系统。 可编辑的内容经由媒体设备由媒体频道帐户的用户接收和控制,并且不可编辑的内容由网络媒体服务应用程序控制。 该方法还包括响应于用户发起用于该频道的会话的请求,创建和呈现包括可编辑和不可编辑内容的媒体频道页面。

    Holographic efficiency adjustment
    8.
    发明授权
    Holographic efficiency adjustment 失效
    全息效率调整

    公开(公告)号:US5210625A

    公开(公告)日:1993-05-11

    申请号:US677224

    申请日:1991-03-29

    IPC分类号: G02B5/32 G03H1/18

    CPC分类号: G03H1/18 G02B5/32 Y10S359/90

    摘要: A hologram efficiency adjusting process that includes scanning the brightness effect of a hologram, which is either the hologram to be adjusted or a hologram representative of the hologram to be adjusted, to provide brightness vs. position information. The brightness information is utilized to produce a variable duty cycle half-tone mask that contains a pattern defining the areas of the hologram which are to be removed, with the pattern being unresolvable by the viewer of the hologram from which holograms have been removed pursuant to the mask pattern. The hologram to be adjusted is then photoresist coated and etched in accordance with the mask. Alternatively, the brightness information can be utilized to directly expose, for example by a laser scanner, photoresist disposed on the hologram to be adjusted.

    摘要翻译: 一种全息图效率调整过程,其包括扫描全息图的亮度效果,全息图是待调节的全息图或代表要调节的全息图的全息图,以提供亮度与位置信息。 亮度信息被用于产生可变占空比半色调掩模,该可变占空比半色调掩模包含限定要去除的全息图的区域的图案,其中图案不全是由全息图的观察者根据 掩模图案。 然后根据掩模对待调整的全息图进行光致抗蚀剂涂覆和蚀刻。 或者,可以利用亮度信息来直接暴露例如激光扫描器,设置在待调整的全息图上的光致抗蚀剂。