Synchronization and tracking in a digital communication system

    公开(公告)号:US6052423A

    公开(公告)日:2000-04-18

    申请号:US349077

    申请日:1999-07-08

    摘要: There is disclosed a bit sync search and frame sync search system operative with a digital data signal as transmitted by a digital radio transmitter. The bit search is implemented by detecting a predetermined phasing signal which is incorporated in the digital signal and which has a repetitive bit pattern of ones and zeroes. The phasing signal is first detected by providing an in-phase and quadrature component signal and correlating those signals to provide an output signal indicative of the bit pattern in the phasing signal. After the phasing signal has been provided and an oscillator associated with a receiving apparatus is compensated according to the detected phasing signal, a tracking mode is entered, whereby a frame signal is captured and the system generates histograms of data bit transitions for producing an error signal indicative of the difference of the transmitted clock rate and the sampling portion of a received bit. In this manner, by adjusting the clock according to the error signal produced by the histogram process one can be assured that the sampling rate at the receiver will occur relatively at the center of each bit to therefore provide reliable decoding or detection of the received digital data signal in the presence of the noise.

    Integrated electrical signal switching and amplifying system
    22.
    发明授权
    Integrated electrical signal switching and amplifying system 失效
    集成电信号开关放大系统

    公开(公告)号:US5743859A

    公开(公告)日:1998-04-28

    申请号:US648529

    申请日:1996-05-13

    摘要: A signal management system is disclosed which integrates a patient switching box and an amplification unit into a single compact enclosure sufficiently small to reside by the patient table in an operating unit set up for electrophysiology procedures. The system includes a front panel designed to accept standard ECG leads, a plurality of intracardiac leads, including leads available for stimulation and/or lesion generation, and a plurality of pressure channels. The front panel also includes a touch screen display to allow quick assignments of labels to each of the ECG or intracardiac leads and the pressure channels. The system includes an onboard microprocessor which allows any operation performed on the System to be automatically updated on a remote computer processing unit if attached, and vice-versa. Digital signal processors are used in the system to perform switching operations on the electrical signals received, and to perform gain, limiting and/or filtering processes thereon. The digital signal processors are automatically calibrated to adjust for varying gain and phase performance of the inputting front-end amplifiers which deliver the electrical signals from the intracardiac leads.

    摘要翻译: 公开了一种信号管理系统,其将患者切换盒和放大单元集成到足够小的单个紧凑型外壳中,以便将患者台置于设置用于电生理过程的操作单元中。 该系统包括设计用于接受标准ECG引线的前面板,包括可用于刺激和/或病变生成的引线的多个心内引线以及多个压力通道。 前面板还包括一个触摸屏显示屏,可以快速分配每个心电图或心内线和压力通道的标签。 该系统包括板载微处理器,其允许在系统上执行的任何操作在远程计算机处理单元(如果附加)上自动更新,反之亦然。 系统中使用数字信号处理器来对所接收的电信号执行切换操作,并在其上执行增益,限制和/或滤波处理。 数字信号处理器被自动校准,以调整输入前端放大器的变化的增益和相位性能,其输送来自心脏内引线的电信号。

    Integrated communication link having a dynamically allocatable bandwidth
and protocol for transmission of allocation information over the link
    23.
    发明授权
    Integrated communication link having a dynamically allocatable bandwidth and protocol for transmission of allocation information over the link 失效
    具有动态可分配带宽和协议的集成通信链路,用于通过链路传输分配信息

    公开(公告)号:US5313467A

    公开(公告)日:1994-05-17

    申请号:US985249

    申请日:1992-12-02

    IPC分类号: H04J3/16 H04L5/22 H04Q11/04

    摘要: An integrated communications link in a communications network that is provided with apparatus which allows dynamic allocability of bandwidth among a plurality of channels. At least three different types of information can be carried on these channels, and the bandwidth of these channels are dynamic so that it can be changed according to a determinable scheme. The link also sends error control information with a message that informs the receiver how the bandwidth is to be allocated, this error control information providing an extremely high level of assurance that the receiver of the information will know how the received information is to be allocated.

    摘要翻译: 在通信网络中的集成通信链路,其提供有允许在多个信道中的带宽的动态可分配性的装置。 这些信道可以携带至少三种不同类型的信息,并且这些信道的带宽是动态的,使得它可以根据可确定的方案来改变。 该链路还发送错误控制信息,该消息通知接收者如何分配带宽,该错误控制信息提供了非常高的保证信息的接收者将知道如何分配所接收的信息。

    METHOD AND SYSTEM FOR INCLUDING SECURITY INFORMATION WITH A PACKET
    24.
    发明申请
    METHOD AND SYSTEM FOR INCLUDING SECURITY INFORMATION WITH A PACKET 有权
    包含安全信息的方法和系统

    公开(公告)号:US20110119752A1

    公开(公告)日:2011-05-19

    申请号:US13012432

    申请日:2011-01-24

    IPC分类号: G06F21/20

    CPC分类号: H04L63/20

    摘要: A method and system for including security information with a packet is disclosed. A packet is detected as it exits a first network and enters a second network. The first network is configured to support a network security technique, and the second network is not configured to support the network security technique. Network security information associated with the network security technique is included with the packet. A network device is configured to include network security information in overhead of a packet. A method for identifying a first network device in a network is also disclosed. Identification information of the first network is communicated to a second network device.

    摘要翻译: 公开了一种包含安全信息与分组的方法和系统。 当数据包离开第一个网络并进入第二个网络时被检测到。 第一个网络被配置为支持网络安全技术,而第二个网络没有被配置为支持网络安全技术。 与网络安全技术相关联的网络安全信息包括在包中。 网络设备被配置为在分组的开销中包括网络安全信息。 还公开了一种用于识别网络中的第一网络设备的方法。 第一网络的识别信息被传送到第二网络设备。

    Method and system for including security information with a packet
    25.
    发明授权
    Method and system for including security information with a packet 有权
    包含安全信息的方法和系统

    公开(公告)号:US07877601B2

    公开(公告)日:2011-01-25

    申请号:US10999343

    申请日:2004-11-30

    CPC分类号: H04L63/20

    摘要: A method and system for including security information with a packet is disclosed. A packet is detected as it exits a first network and enters a second network. The first network is configured to support a network security technique, and the second network is not configured to support the network security technique. Network security information associated with the network security technique is included with the packet. A network device is configured to include network security information in overhead of a packet. A method for identifying a first network device in a network is also disclosed. Identification information of the first network is communicated to a second network device.

    摘要翻译: 公开了一种包含安全信息与分组的方法和系统。 当数据包离开第一个网络并进入第二个网络时被检测到。 第一个网络被配置为支持网络安全技术,而第二个网络没有被配置为支持网络安全技术。 与网络安全技术相关联的网络安全信息包括在包中。 网络设备被配置为在分组的开销中包括网络安全信息。 还公开了一种用于识别网络中的第一网络设备的方法。 第一网络的识别信息被传送到第二网络设备。

    Multi-Tier Employment Model for Human Capital Management
    26.
    发明申请
    Multi-Tier Employment Model for Human Capital Management 有权
    人力资本管理多层次就业模式

    公开(公告)号:US20090125486A1

    公开(公告)日:2009-05-14

    申请号:US12268836

    申请日:2008-11-11

    IPC分类号: G06F7/06 G06F17/30

    CPC分类号: G06Q10/06 G06Q10/067

    摘要: A three-tier employment model provides flexibility when modeling even moderately complex relationships, such as where an employee has multiple job tasks or assignments for an employer. In such an example, a top level can store information for each employee defining the type of relationship that exists between the employee and the employer, such as where the employee works for multiple entities of the employer. A middle level can capture employment terms and conditions that are associated with the relationship(s), as well as one or many work assignments, such as salary information for each assignment. A bottom level can store the actual details of the work to be performed. A three-tier approach thus provides significant flexibility in modeling the employment of a person for an enterprise, and allows companies and enterprises to easily record the reality of their complex work relationships.

    摘要翻译: 三层就业模式在建模甚至中等复杂关系时提供灵活性,例如员工拥有多个工作任务或为雇主分配任务。 在这样一个例子中,最顶层可以存储定义雇员和雇主之间存在的关系类型的每个雇员的信息,例如雇员为雇主的多个实体工作。 中等水平可以捕获与关系相关联的就业条款和条件,以及一项或多项工作任务,如每项任务的工资信息。 底层可以存储要执行的工作的实际细节。 因此,三层方式在为企业雇用人员建模方面提供了极大的灵活性,并允许公司和企业轻松记录其复杂工作关系的现实。

    Method and apparatus for securely disseminating security server contact information in a network
    27.
    发明申请
    Method and apparatus for securely disseminating security server contact information in a network 有权
    用于在网络中安全地传播安全服务器联系信息的方法和装置

    公开(公告)号:US20060200670A1

    公开(公告)日:2006-09-07

    申请号:US11069857

    申请日:2005-03-01

    IPC分类号: H04L9/00

    摘要: Various systems and method are disclosed for disseminating security server contact information in a network. For example, one method (e.g., performed by a security server) involves determining that a network device is a secure network device, in response to participating in a security exchange with the network device; and then sending a server list to the network device. The server list includes the network address of at least one security server. Another method (e.g., performed by a network device) involves initiating an authentication exchange; receiving a server list, which includes the network address of a security server, as part of the authentication exchange; and communicating with the security server by sending a packet to the network address included in the server list.

    摘要翻译: 公开了用于在网络中传播安全服务器联系信息的各种系统和方法。 例如,响应于参与与网络设备的安全交换,一种方法(例如由安全服务器执行)涉及确定网络设备是安全网络设备; 然后将服务器列表发送到网络设备。 服务器列表包括至少一个安全服务器的网络地址。 另一种方法(例如,由网络设备执行)涉及启动认证交换; 作为认证交换的一部分,接收包括安全服务器的网络地址的服务器列表; 并通过向包括在服务器列表中的网络地址发送分组来与安全服务器通信。

    Method for maintaining a correct time in a distributed processing system
    29.
    发明授权
    Method for maintaining a correct time in a distributed processing system 失效
    在分布式处理系统中维持正确时间的方法

    公开(公告)号:US4894846A

    公开(公告)日:1990-01-16

    申请号:US213746

    申请日:1988-06-30

    申请人: Michael Fine

    发明人: Michael Fine

    IPC分类号: G06F1/14 H04J3/06

    CPC分类号: H04J3/0667

    摘要: A method for maintaining a correct time in a distributed processing system involves clerk nodes maintaining their local clocks by requesting time intervals from server nodes, and server nodes maintaining their local clocks either by requesting time intervals from other server nodes or by receiving time information from an outside source. Server nodes also provide time intervals to requesting clerk nodes and requesting server nodes with such a method. System time is always increasing and monotonic and faulty servers are detected periodically.

    Method and apparatus for policy-based network access control with arbitrary network access control frameworks
    30.
    发明授权
    Method and apparatus for policy-based network access control with arbitrary network access control frameworks 有权
    用于具有任意网络访问控制框架的基于策略的网络访问控制的方法和装置

    公开(公告)号:US08713639B2

    公开(公告)日:2014-04-29

    申请号:US13549244

    申请日:2012-07-13

    IPC分类号: H04L29/06

    CPC分类号: H04L63/20 H04L63/102

    摘要: A method and apparatus for integrating various network access control frameworks under the control of a single policy decision point (PDP). The apparatus supports pluggable protocol terminators to interface to any number of access protocols or backend support services. The apparatus contains Trust and Identity Mediators to mediate between the protocol terminators and a canonical policy subsystem, translating attributes between framework representations, and a canonical representation using extensible data-driven dictionaries.

    摘要翻译: 一种用于在单个策略决策点(PDP)的控制下集成各种网络访问控制框架的方法和装置。 该设备支持可插拔协议终结器,以连接任何数量的访问协议或后端支持服务。 该设备包含信任和身份调解员,以协调协议终结者和规范性策略子系统之间的转换,在框架表示之间翻译属性,以及使用可扩展数据驱动的字典进行规范化表示。