中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

220 records (took 0.061 seconds)

    Authentication of Networked Devices Having Low Computational Capacity
    148.
    发明申请
    Authentication of Networked Devices Having Low Computational Capacity 审中-公开
    具有低计算能力的网络设备的认证

    公开(公告)号：US20170063843A1

    公开(公告)日：2017-03-02

    申请号：US15222524

    申请日：2016-07-28

    Applicant: Texas Instruments Incorporated

    Inventor： Kumaran Vijayasankar ,  Oliver Shih ,  Arvind K. Raghu ,  Ramanuja Vedantham ,  Xiaolin Lu

    IPC: H04L29/06 ,  H04L9/32

    CPC classification number: H04L63/0823 ,  H04L9/3268 ,  H04L63/0428 ,  H04L63/0435 ,  H04L63/0442 ,  H04L63/062 ,  H04L63/0884

    Abstract: Authentication of a networked device with limited computational resources for secure communications over a network. Authentication of the device begins with the supplicant node transmitting a signed digital certificate with its authentication credentials to a proxy node. Upon verifying the certificate, the proxy node then authenticates the supplicant's credentials with an authentication server accessible over the network, acting as a proxy for the supplicant node. Typically, this verification includes decryption according to a public/private key scheme. Upon successful authentication, the authentication server creates a session key for the supplicant node and communicates it to the proxy node. The proxy node encrypts the session key with a symmetric key, and transmits the encrypted session key to the supplicant node which, after decryption, uses the session key for secure communications. In some embodiments, the authentication server encrypts the session key with the symmetric key.

    Abstract translation: 用于通过网络进行安全通信的有限计算资源的网络设备的认证。 设备的认证开始于请求者节点向代理节点发送具有其认证凭证的签名数字证书。 在验证证书后，代理节点然后通过网络可访问的认证服务器来认证请求方的凭据，充当请求方节点的代理。 通常，该验证包括根据公共/私人密钥方案的解密。 成功认证后，认证服务器为请求方节点创建会话密钥，并将其与代理节点进行通信。 代理节点用对称密钥加密会话密钥，并将加密的会话密钥发送给请求方节点，该请求者节点在解密之后使用会话密钥进行安全通信。 在一些实施例中，认证服务器用对称密钥加密会话密钥。

    NETWORK ADDRESS ASSIGNMENT AND RECLAMATION FOR HIERARCHICAL BASED RPL NETWORKS
    149.
    发明申请
    NETWORK ADDRESS ASSIGNMENT AND RECLAMATION FOR HIERARCHICAL BASED RPL NETWORKS 审中-公开
    网络地址分配和基于分层的RPL网络的恢复

    公开(公告)号：US20170063685A1

    公开(公告)日：2017-03-02

    申请号：US15249716

    申请日：2016-08-29

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Ramanuja Vedantham ,  Kumaran Vijayasankar ,  Arvind K. Raghu ,  Ariton E. Xhafa

    IPC: H04L12/741

    CPC classification number: H04L45/48 ,  H04L45/02 ,  H04L61/2007

    Abstract: This invention is an improvement of a Hierarchical Do-Dag based RPL (H-DOC) network configuration where the network address of each node corresponds to its location within the hierarchical network. Network addresses are initialized hierarchically. Candidate patent nodes signal availability. Candidate child nodes respond to a selected candidate parent node with a temporary address. The selected candidate parent node acknowledges selection and communicates a hierarchical address for the child node in a transmission to the temporary address. The child node changes its address to the hierarchical address from the parent node. When a node switches parent nodes, it signals the old parent node to deallocate it as a child node, and then signals a selected candidate parent node with a temporary address.

    Abstract translation: 本发明是基于分层Do-Dag的RPL（H-DOC）网络配置的改进，其中每个节点的网络地址对应于其在分层网络内的位置。 网络地址被分层初始化。 候选专利节点信号可用性。 候选子节点使用临时地址响应所选择的候选父节点。 选择的候选父节点确认选择，并将传输中的子节点的分层地址传送到临时地址。 子节点将其地址从父节点更改为分层地址。 当节点切换父节点时，它向旧的父节点发信号，将其解除分配为子节点，然后用临时地址发送选定的候选父节点。

    Relative phase detection in power line communications networks
    150.
    发明授权
    Relative phase detection in power line communications networks 有权
    电力线通信网络中的相对相位检测

    公开(公告)号：US09584185B2

    公开(公告)日：2017-02-28

    申请号：US13659536

    申请日：2012-10-24

    Applicant: Texas Instruments Incorporated

    Inventor： Ramanuja Vedantham ,  Anand Dabak ,  Kumaran Vijayasankar

    IPC: H02J1/00 ,  H02J3/00 ,  H04B3/54

    CPC classification number: H04B3/54 ,  H04B2203/5408 ,  H04B2203/542 ,  H04B2203/5433

    Abstract: Systems and methods for relative phase detection and zero crossing detection for power line communications (PLC) are described. In some embodiments, both transmit and receive PLC devices detect a zero crossing on an AC mains phase. The devices start a phase detection counter (PDC) by generating a zero crossing pulse within 5% of the actual zero crossing time. When a frame is transmitted, the transmitting device includes a PDC value in the frame control header (FCH). The PDC value corresponds to the start time of the FCH. When the frame is received at the receive PLC device, the receive PLC device measures a local PDC value between the zero crossing and the start of the FCH. The receive device compares the local PDC value to the PDC value in the FCH of the received frame and determines if the devices are on the same phase.

    Abstract translation: 描述了用于电力线通信（PLC）的相对相位检测和零交叉检测的系统和方法。 在一些实施例中，发送和接收PLC设备都检测AC电源相位上的过零点。 器件通过在实际过零时间的5％内产生过零脉冲来启动相位检测计数器（PDC）。 当发送帧时，发送装置在帧控制报头（FCH）中包括PDC值。 PDC值对应于FCH的开始时间。 当在接收PLC设备处接收到帧时，接收PLC设备测量过零点和FCH开始之间的本地PDC值。 接收设备将本地PDC值与接收帧的FCH中的PDC值进行比较，并确定设备是否处于同一相位。

Patent Agency Ranking