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    DEVICE DISCOVERY SYSTEM
    1.
    发明申请
    DEVICE DISCOVERY SYSTEM 有权

    公开(公告)号：US20210294820A1

    公开(公告)日：2021-09-23

    申请号：US17343379

    申请日：2021-06-09

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Steve EPSTEIN ,  Ezra DARSHAN ,  Harel CAIN ,  Shali MOR

    IPC: G06F16/28 ,  H04L29/08 ,  G06F16/23 ,  H04L29/06

    Abstract: In one embodiment, a device discovery system includes a data storage medium to store a clustered data structure including device signatures grouped according to clusters. Each device signature includes device information. Each cluster from a sub-set of the clusters has a different device name. The system also includes an input/output sub-system to receive, from a remote device, a first device signature describing information about a first device, and a processor to perform a decision process based on the clustered data structure with the first device signature as input yielding an output including a first device name or an indication that a name associated with the first device signature is unknown. The processor is operative to prepare a response message including data about the output. The input/output sub-system is operative to send the response message to the remote device.

    INTERLEAVED WATERMARKING
    2.
    发明申请
    INTERLEAVED WATERMARKING 审中-公开

    公开(公告)号：US20170289561A1

    公开(公告)日：2017-10-05

    申请号：US15242535

    申请日：2016-08-21

    Applicant: Cisco Technology, Inc.

    Inventor： David WACHTFOGEL ,  Michal DEVIR ,  Harel CAIN

    IPC: H04N19/467 ,  H04N21/2365 ,  H04N21/235

    CPC classification number: H04N21/2365 ,  H04N21/2347 ,  H04N21/2351 ,  H04N21/23892 ,  H04N21/8358

    Abstract: In one embodiment, a system includes a Headend apparatus including a watermark processor to generate secondary video streams from sections of a primary video stream, group the secondary video streams in groups of at least two secondary video streams, the secondary video streams including units of data for use in watermarking across cryptoperiods in an end-user device which selects one secondary video stream in each group for rendering as part of a composited video stream in order to embed units of data of an identification in the composited video stream, wherein in each cryptoperiod, the watermark processor is operative to generate different groups of the secondary video streams from different non-overlapping portions of the primary video stream, and an encryption processor to generate control words, encrypt each secondary video stream with a different control word, and change the control word of each secondary video stream every cryptoperiod.

    KEY LADDER APPARATUS AND METHOD
    3.
    发明申请
    KEY LADDER APPARATUS AND METHOD 有权
    钥匙扣装置及方法

    公开(公告)号：US20170063538A1

    公开(公告)日：2017-03-02

    申请号：US14809300

    申请日：2015-07-27

    Applicant: Cisco Technology, Inc.

    Inventor： Yaron SELLA ,  Michal DEVIR ,  Harel CAIN ,  Perry SMITH

    IPC: H04L9/08 ,  G09C1/00 ,  G06F21/72 ,  H04L9/00

    CPC classification number: H04L9/0816 ,  G06F21/602 ,  G06F21/72 ,  G09C1/00 ,  H04L9/002 ,  H04L9/0822 ,  H04L9/14 ,  H04L2209/12 ,  H04L2209/38 ,  H04L2209/60

    Abstract: In one embodiment a method, apparatus and system for is described for receiving a first input including a first decryption key and a second input including an encrypted second decryption key at a cryptographic decryption apparatus, the encrypted second decryption key to be decrypted by the cryptographic apparatus according to the first decryption key, storing a value of a key ladder length in a first register by a cryptographic processor, and using the stored value as a loop index by the cryptographic processor for a number of iterations of the cryptographic decryption apparatus executed as a loop, wherein at one stage in the loop execution of the cryptographic decryption apparatus, the second input includes the key ladder length, wherein the loop operation of the cryptographic decryption apparatus operates for a number of iterations equal to an initial value of the loop index. Related methods, apparatuses and systems are also described.

    Abstract translation: 在一个实施例中，描述了用于在密码解密装置处接收包括第一解密密钥和第二输入的第一输入的第一输入和第二输入的加密第二解密密钥的方法，装置和系统，由密码装置解密的加密的第二解密密钥 根据第一解密密钥，通过密码处理器将密钥梯形长度的值存储在第一寄存器中，并且通过密码处理器将所存储的值作为循环索引，将密码解密装置的迭代次数作为 循环，其中在所述加密解密装置的循环执行的一个阶段，所述第二输入包括所述密钥梯形图长度，其中所述密码解密装置的循环操作操作等于循环索引的初始值的迭代次数。 还描述了相关方法，装置和系统。

    INTRUSION DETECTION MECHANISM
    4.
    发明申请
    INTRUSION DETECTION MECHANISM 有权
    入侵检测机制

    公开(公告)号：US20160212162A1

    公开(公告)日：2016-07-21

    申请号：US14600129

    申请日：2015-01-20

    Applicant: Cisco Technology. Inc.

    Inventor： Harel CAIN ,  Yaron SELLA ,  Michal DEVIR ,  David WENDE

    IPC: H04L29/06

    CPC classification number: H04L63/1416 ,  H04L12/40 ,  H04L12/4625 ,  H04L63/08 ,  H04L63/1425 ,  H04L67/12 ,  H04L2012/40215

    Abstract: In one embodiment, a method implemented on a node connected to a network bus includes: storing one or more message identifiers, the one or more identifiers comprising at least one message identifier identifying the node, the at least one message identifier being included in a message at a time when the message is sent by the node onto the network bus; monitoring network bus traffic, the network bus traffic comprising messages transmitted by the node and by other nodes connected to the network bus; and alerting a processor of the node if a message transmitted on the network bus by at least one of the other nodes is identified as having a message identifier corresponding to the at least one message identifier.

    Abstract translation: 在一个实施例中，在连接到网络总线的节点上实现的方法包括：存储一个或多个消息标识符，所述一个或多个标识符包括标识节点的至少一个消息标识符，所述至少一个消息标识符被包括在消息中 在消息由节点发送到网络总线上的时间; 监控网络总线流量，网络总线流量包括由节点和连接到网络总线的其他节点发送的消息; 以及如果在所述网络总线上由至少一个其他节点发送的消息被识别为具有与所述至少一个消息标识符相对应的消息标识符，则提醒所述节点的处理器。

    Watermark With Data Integrity Verification
    5.
    发明申请
    Watermark With Data Integrity Verification 有权
    水印与数据完整性验证

    公开(公告)号：US20150200773A1

    公开(公告)日：2015-07-16

    申请号：US14153387

    申请日：2014-01-13

    Applicant: Cisco Technology Inc.

    Inventor： Yaron Sella ,  Harel CAIN ,  Michal DEVIR

    IPC: H04L9/08 ,  H04N1/32

    CPC classification number: H04L9/0816 ,  H04L9/065 ,  H04L2209/24 ,  H04L2209/30 ,  H04L2209/608 ,  H04N1/32144 ,  H04N2201/3236 ,  H04N2201/3281 ,  H04N2201/3284

    Abstract: In one embodiment, a system including a processor is operative to receive a content item including a watermark encoding a series of encrypted bits deriving from encrypting an information element multiple times, extract at least some encrypted bits from at least part of the watermark, decrypt a series of N bits using a first key yielding a first value, the series of N bits including Q bits of the encrypted bits and K, greater than, or equal to zero, guessed bits, re-encrypt the first value using a second key yielding a second value, and compare at least part of the second value to M bits of the encrypted bits to determine if at least part of the second value matches the M bits in order to provide a level of confidence that the first value is the information element which was encrypted and embedded as the watermark.

    Abstract translation: 在一个实施例中，包括处理器的系统可操作以接收包含编码从多个信息元素加密得出的一系列加密比特的水印的内容项，从至少部分水印中提取至少一些加密比特，解密 使用产生第一值的第一密钥的N个比特序列，包括加密比特的Q比特的N个比特序列以及大于或等于零的猜测比特，使用第二个密钥对第一个密钥进行加密 第二值，并将第二值的至少一部分与加密比特的M比特进行比较，以确定第二值的至少一部分是否与M比特匹配，以便提供第一值是信息元素的置信度 它被加密并嵌入水印。

    DEVICE DISCOVERY SYSTEM
    7.
    发明申请
    DEVICE DISCOVERY SYSTEM 审中-公开

    公开(公告)号：US20170262523A1

    公开(公告)日：2017-09-14

    申请号：US15068754

    申请日：2016-03-14

    Applicant: Cisco Technology, Inc.

    Inventor： Steve EPSTEIN ,  Ezra DARSHAN ,  Harel CAIN ,  Shali MOR

    IPC: G06F17/30 ,  H04L29/08

    CPC classification number: G06F16/285 ,  G06F16/23 ,  H04L63/0876 ,  H04L63/1483 ,  H04L67/1095 ,  H04L67/12

    Abstract: In one embodiment, a device discovery system includes a data storage medium to store a clustered data structure including device signatures grouped according to clusters. Each device signature includes device information. Each cluster from a sub-set of the clusters has a different device name. The system also includes an input/output sub-system to receive, from a remote device, a first device signature describing information about a first device, and a processor to perform a decision process based on the clustered data structure with the first device signature as input yielding an output including a first device name or an indication that a name associated with the first device signature is unknown. The processor is operative to prepare a response message including data about the output. The input/output sub-system is operative to send the response message to the remote device.

    SYSTEM AND METHOD FOR EMBEDDING DATA
    9.
    发明申请
    SYSTEM AND METHOD FOR EMBEDDING DATA 审中-公开
    用于嵌入数据的系统和方法

    公开(公告)号：US20150379660A1

    公开(公告)日：2015-12-31

    申请号：US14848353

    申请日：2015-09-09

    Applicant: Cisco Technology, Inc.

    Inventor： Harel CAIN ,  Michal DEVIR

    IPC: G06T1/00 ,  H04N19/467

    CPC classification number: G06T1/0092 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  H04N1/32144 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32309 ,  H04N19/467 ,  H04N2005/91335

    Abstract: In one embodiment, a watermark is embedded in a sequence of video frames, for each one of the video frames, a set of N rectangular patches, two palettes of pixel values in a selected color space, such that the two palettes are denoted as P0 and P1, and P0≠P1, and in each one of the N patches a processor which chooses one of P0 and P1 according to a value of a payload bit to be encoded, a calculator which calculates one of a variance of pixel values in the frame, and edginess for the pixel values in the frame, thereby determining a calculated value, and a processor which determines if the calculated value is beneath a given threshold value, if the calculated value is beneath the given threshold value the processor is operative to calculate a function of the pixel values, the closest value to a result of the calculation of the function in the chosen palette is chosen, and a replacer which replaces the pixel values within the patch with the chosen closest value. Related systems, apparatus and methods are also described.

    Abstract translation: 在一个实施例中，将水印嵌入在视频帧序列中，对于每个视频帧，一组N个矩形块，所选色彩空间中的两个像素值调色板，使得两个调色板被表示为P0 P1和P0≠P1，并且在N个补丁中的每一个中，根据要编码的有效载荷比特的值来选择P0和P1之一的处理器，计算器，其计算所述N个补丁中的像素值的方差之一 帧和边缘，用于确定计算的值，以及处理器，其确定计算值是否在给定阈值之下，如果计算的值低于给定阈值，则处理器可操作地计算 选择像素值的函数，与所选择的调色板中的函数的计算结果的最接近的值，以及替换器，其用所选择的最接近的值替换补丁内的像素值。 还描述了相关系统，装置和方法。

    SYSTEMS AND METHODS FOR STITCHING SEPARATELY ENCODED NAL UNITS INTO A STREAM
    10.
    发明申请
    SYSTEMS AND METHODS FOR STITCHING SEPARATELY ENCODED NAL UNITS INTO A STREAM 审中-公开

    公开(公告)号：US20180343478A1

    公开(公告)日：2018-11-29

    申请号：US15607542

    申请日：2017-05-29

    Applicant: Cisco Technology, Inc.

    Inventor： Harel CAIN ,  Michal DEVIR ,  Gitty ZINGER ,  David ATIAS

    IPC: H04N21/2343 ,  H04N21/236 ,  H04N21/234 ,  H04N21/434

    Abstract: In one embodiment, a method comprising obtaining a stream comprising first network abstraction layer (NAL) units generated in a first encoding, the first NAL units including first slices, obtaining second NAL units generated in a second encoding, the second NAL including second slice(s), and stitching the second NAL units into the stream, the stitching including positioning the second slice(s) in respective position(s) in the stream formerly occupied by temporary slice(s) generated in the first encoding, and for the second slice(s) conforming at least one slice header syntax element and at least one network abstraction layer unit syntax element of a second slice to values of a temporary slice formerly occupying the position of the second slice, and retaining at least one other slice header syntax element of the second slice as encoded in the second encoding.

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