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    • 5. 发明授权
    • Method and apparatus for determining PCM code translations
    • 用于确定PCM码转换的方法和装置
    • US06421388B1
    • 2002-07-16
    • US09085737
    • 1998-05-27
    • Vladimir ParizhskyDale M. WalshVitali Vinokour
    • Vladimir ParizhskyDale M. WalshVitali Vinokour
    • H04B1404
    • H04B14/048
    • A method and apparatus for determining the correct decision regions in a PCM communication receiver utilizing a public Digital Telephone Network (DTN). A receiver receives samples from an analog loop of the DTN and quantizes the samples according to a reference lattice. The reference lattice defines a set of decision levels representing the quantization level for each PCM codeword. The receiver sets the reference lattice by scaling the lattice to account for the characteristics of the communication channel, which typically includes distortions of the digital data resulting in nonlinear behavior of the channel. The scaling and re-scaling thus accounts for PCM codeword translations or other channel distortion.
    • 一种用于在使用公共数字电话网(DTN)的PCM通信接收机中确定正确决定区域的方法和装置。 接收机从DTN的模拟环路接收样本,并根据参考点量化样本。 参考点定义了一组表示每个PCM码字的量化级别的决策级别。 接收器通过缩放晶格来设置参考点,以考虑通信信道的特性,通常包括导致信道的非线性行为的数字数据的失真。 缩放和重新缩放因此考虑了PCM码字转换或其他信道失真。
    • 6. 发明授权
    • Dynamic building of VLAN interfaces based on subscriber information strings
    • 基于用户信息字符串动态构建VLAN接口
    • US07944918B2
    • 2011-05-17
    • US12369487
    • 2009-02-11
    • Linda M. CabecaMathias KokotJerome P. MoisandVitali VinokourThomas LemaireKaren Ruben
    • Linda M. CabecaMathias KokotJerome P. MoisandVitali VinokourThomas LemaireKaren Ruben
    • H04L12/28H04L12/56
    • H04L12/4645H04L12/4675H04L45/52
    • Techniques are described that allow a network device, such as a router, to dynamically build VLAN interfaces based on subscriber information strings included within packets. In particular, the network device comprises an interface controller and a forwarding controller, where the forwarding controller receives the packet over an Ethernet port and forwards the received packet to the interface controller. The packet includes both Ethernet tagging information and a subscriber information string. The interface controller comprises an Ethernet module that dynamically builds a primary virtual local area network (VLAN) sub-interface (PVS) based on the Ethernet tagging information. The Ethernet module also dynamically builds a subscriber VLAN sub-interface (SVS) based on the subscriber information string. The SVS allows the network device to distinguish between subscribers residing on the same VLAN, and, therefore, to provide subscriber specific services.
    • 描述了允许网络设备(例如路由器)基于分组中包括的订户信息字符串动态构建VLAN接口的技术。 特别地,网络设备包括接口控制器和转发控制器,转发控制器通过以太网端口接收分组,并将接收的分组转发给接口控制器。 分组包括以太网标记信息和用户信息字符串。 接口控制器包括基于以太网标签信息动态构建主虚拟局域网(VLAN)子接口(PVS)的以太网模块。 以太网模块还根据用户信息字符串动态构建用户VLAN子接口(SVS)。 SVS允许网络设备区分驻留在同一个VLAN上的用户,从而提供用户特定的服务。