System and method for tracking movement of individuals

    公开(公告)号:US06992582B2

    公开(公告)日:2006-01-31

    申请号:US10677272

    申请日:2003-10-03

    CPC classification number: G07C9/00111

    Abstract: A device for monitoring movement of an object is provided. A first module is configured to secure to the object. A second module, capable of electrically connecting to the first module, includes at least a rechargeable battery and a memory capable of storing a history of movement data. A third module, capable of electrically connecting with the second module, includes a data modem capable of connecting to a remote station, and a battery charger. When the second module is connected to the first module, the memory periodically records available location data representing a position of the device at the time of recording. When the second module is connected to the third module, the memory downloads through the data modem and the battery charger charges the battery.

    Multi-packet transport structure and method for sending network data over satellite network
    26.
    发明申请
    Multi-packet transport structure and method for sending network data over satellite network 有权
    用于通过卫星网络发送网络数据的多分组传输结构和方法

    公开(公告)号:US20050099991A1

    公开(公告)日:2005-05-12

    申请号:US11018999

    申请日:2004-12-21

    Abstract: A method for encoding network data, such as Internet Protocol (IP) data, into a format for transmission over a satellite system is described. The network data is configured in a packet having a data block and header information. The network data packet is encoded into a variable-length multi-packet transport (MPT) frame. The MPT frame comprises a data frame to hold data and header information. The IP packet in inserted its entirety into the data frame of the MPT frame. The variable-length MTP frame is then encoded into one or more fixed-length MTP packets. Each MPT packet has a data fragment block comprising a portion of the MTP frame and associated header information to designate what portion of the MTP frame is contained in the data fragment block. The MPT packets are sized to be embedded as a specific size payload of the satellite packet that is transmitted over a satellite network. Using this method, data received over a data network (i.e., Ethernet or Internet) in large network data packets are broken into smaller packets defined by the mult-packet transport. These smaller packets are then inserted as the data payload within standard fixed-size packets suitable for transmission across a particular distribution medium, such as satellite network. The network data remains independent of the underlying network and can be easily extracted at the receiver for use by computer applications.

    Abstract translation: 描述了将诸如因特网协议(IP)数据的网络数据编码为用于通过卫星系统传输的格式的方法。 网络数据被配置在具有数据块和头信息的分组中。 网络数据分组被编码成可变长度的多分组传输(MPT)帧。 MPT帧包括用于保存数据和头信息的数据帧。 IP数据包整体插入到MPT帧的数据帧中。 然后将可变长度的MTP帧编码成一个或多个固定长度的MTP分组。 每个MPT分组具有包括MTP帧的一部分和相关联的报头信息的数据片段块,以指定MTP帧的哪一部分包含在数据片段块中。 MPT分组的大小被确定为通过卫星网络传输的卫星分组的特定大小有效载荷。 使用该方法,通过数据网络(即,以太网或因特网)在大型网络数据分组中接收的数据被分解成由多分组传输定义的较小分组。 然后,将这些较小的分组作为数据有效载荷插入适用于穿过诸如卫星网络的特定分布介质进行传输的标准固定大小分组内。 网络数据保持独立于底层网络,并且可以容易地在接收机处提取以供计算机应用使用。

    Transmission announcement system and method for announcing upcoming data transmissions over a broadcast network
    27.
    发明授权
    Transmission announcement system and method for announcing upcoming data transmissions over a broadcast network 失效
    用于通过广播网络通知即将到来的数据传输的传输通知系统和方法

    公开(公告)号:US06628625B1

    公开(公告)日:2003-09-30

    申请号:US09620173

    申请日:2000-07-19

    Abstract: In a broadcast system in which computer data and other content are delivered from multiple content servers to multiple clients at least partly over a broadcast network, a transmission announcement system announces upcoming broadcast transmissions and instructs the clients on how to receive the broadcast transmissions. Announcement servers (which may or may not be the same as the content servers which serve the data for the broadcast transmissions) generate announcements containing information specifying how associated upcoming transmissions are to be delivered over the broadcast network. The announcement server makes the announcements available to the clients over the broadcast network or over a secondary link other than the broadcast network. As possible examples of the secondary link, the announcement servers might send the announcements to a multicast address over a public network, such as the Internet, or post the announcements at a publicly accessible site on a data network, such as a Web site on the Internet. The clients receive the announcements via the broadcast network or the secondary link. The clients filter the announcements according to predetermined criteria, keeping the announcements satisfying the criteria and discarding the rest. The client searches the announcements that are kept to extract information pertaining to retrieval of the broadcast transmission (e.g., a broadcast protocol, a broadcast locator, a transmission time, etc.). The client then tunes a broadcast receiver to the broadcast locator and launches a receiving application to receive the transmission according to the broadcast protocol.

    Abstract translation: 在其中计算机数据和其他内容至少部分地通过广播网络从多个内容服务器传送到多个客户端的广播系统中,传输通知系统通知即将到来的广播传输,并指示客户端如何接收广播传输。 公告服务器(其可能与服务于广播传输的数据的内容服务器可能不一样)生成包含指定如何通过广播网络传递相关的即将到来的传输的信息的通知。 通告服务器通过广播网络或广播网络以外的辅助链路向客户端发布通知。 作为辅助链路的可能示例,通告服务器可以通过诸如因特网的公共网络将通知发送到多播地址,或者在数据网络上的可公开访问的站点上发布公告,诸如网络上的网站 互联网。 客户端通过广播网络或辅助链路接收通知。 客户端根据预先确定的标准对公告进行过滤,保持公告满足标准,弃权。 客户端搜索保留的公告来提取与广播传输的检索有关的信息(例如,广播协议,广播定位器,传输时间等)。 然后,客户端将广播接收机调谐到广播定位器,并启动接收应用以根据广播协议接收传输。

    Multi-packet transport structure and method for sending network data over satellite network
    28.
    发明授权
    Multi-packet transport structure and method for sending network data over satellite network 失效
    用于通过卫星网络发送网络数据的多分组传输结构和方法

    公开(公告)号:US06172972B2

    公开(公告)日:2001-01-09

    申请号:US08728066

    申请日:1996-10-09

    Abstract: A method for encoding network data, such as Internet Protocol (IP) data, into a format for transmission over a satellite system is described. The network data is configured in a packet having a data block and header information. The network data packet is encoded into a variable-length multi-packet transport (MPT) frame. The MPT frame comprises a data frame to hold data and header information. The IP packet in inserted its entirety into the data frame of the MPT frame. The variable-length MTP frame is then encoded into one or more fixed-length MTP packets. Each MPT packet has a data fragment block comprising a portion of the MTP frame and associated header information to designate what portion of the MTP frame is contained in the data fragment block. The MPT packets are sized to be embedded as a specific size payload of the satellite packet that is transmitted over a satellite network. Using this method, data received over a data network (i.e., Ethernet or Internet) in large network data packets are broken into smaller packets defined by the mult-packet transport. These smaller packets are then inserted as the data payload within standard fixed-size packets suitable for transmission across a particular distribution medium, such as satellite network. The network data remains independent of the underlying network and can be easily extracted at the receiver for use by computer applications.

    Abstract translation: 描述了将诸如因特网协议(IP)数据的网络数据编码为用于通过卫星系统传输的格式的方法。 网络数据被配置在具有数据块和头信息的分组中。 网络数据分组被编码成可变长度的多分组传输(MPT)帧。 MPT帧包括用于保存数据和头信息的数据帧。 IP数据包整体插入到MPT帧的数据帧中。 然后将可变长度的MTP帧编码成一个或多个固定长度的MTP分组。 每个MPT分组具有包括MTP帧的一部分和相关联的报头信息的数据片段块,以指定MTP帧的哪一部分包含在数据片段块中。 MPT分组的大小被确定为通过卫星网络传输的卫星分组的特定大小有效载荷。 使用该方法,通过数据网络(即,以太网或因特网)在大型网络数据分组中接收的数据被分解成由多分组传输定义的较小分组。 然后,将这些较小的分组作为数据有效载荷插入适用于穿过诸如卫星网络的特定分布介质进行传输的标准固定大小分组内。 网络数据保持独立于底层网络,并且可以容易地在接收机处提取以供计算机应用使用。

    Data packet header compression for unidirectional transmission
    29.
    发明授权
    Data packet header compression for unidirectional transmission 失效
    用于单向传输的数据包头压缩

    公开(公告)号:US6032197A

    公开(公告)日:2000-02-29

    申请号:US937476

    申请日:1997-09-25

    CPC classification number: H04L12/18 H04L29/06 H04L69/04 H04L69/22

    Abstract: A broadcast transmission system transmits data packets from a server to a client over a unidirectional broadcast network. The system transmits both full-length data packets, which have uncompressed headers, and reduced-length data packets, which have compressed headers derived from associated uncompressed headers. The server compresses the data packets by compressing the packet header. Compressed packet headers contain fewer header fields than their associated uncompressed headers. The server transmits a series of intermixed full-length and reduced-length packets to the client. As the packets are received, the client determines whether the packets are full-length or reduced-length. If the packet is full-length, the client stores the uncompressed header in a header table. If the packet is reduced-length, the client rebuilds the compressed header from its corresponding uncompressed headers in the header table.

    Abstract translation: 广播传输系统通过单向广播网络将数据分组从服务器发送到客户端。 系统传输具有未压缩报头的全长数据分组和具有从相关联的未压缩报头导出的压缩报头的缩减长度数据分组。 服务器通过压缩包头压缩数据包。 压缩包头包含的标题字段少于其关联的未压缩标题。 服务器向客户端发送一系列混合的全长和缩减的数据包。 当接收到数据包时,客户端确定数据包是全长还是缩小。 如果数据包是全长的,则客户端将未压缩的头部存储在头表中。 如果数据包是缩减长度,则客户机从其表中的相应的未压缩报头重建压缩报头。

    Adjusting DDoS protection based on traffic type
    30.
    发明授权
    Adjusting DDoS protection based on traffic type 有权
    根据流量类型调整DDoS保护

    公开(公告)号:US09060020B2

    公开(公告)日:2015-06-16

    申请号:US13869691

    申请日:2013-04-24

    CPC classification number: H04L63/1458 H04L63/101

    Abstract: A system, method and computer readable storage medium that receives traffic/packets from external devices attempting to access protected devices in a protected network. A determination is made to whether a received packet belongs to one of a plurality of packet classifications. Each packet classification indicative of different classes of IP traffic. Countermeasures are applied to a received packet to prevent attack upon the protected devices. Applying a countermeasure to a received packet determined to belong to one of the plurality of packet classifications includes countermeasure modification/selection contingent upon the determined packet classification for the received packet.

    Abstract translation: 一种系统,方法和计算机可读存储介质,其从外部设备接收来自受保护网络中受保护设备的流量/分组。 确定接收到的分组是否属于多个分组分类中的一个。 每个分组分类表示不同类别的IP流量。 对策应用于接收到的数据包,以防止对受保护设备的攻击。 对确定属于多个分组分类中的一个的接收分组应用对策包括根据所确定的接收分组分组的对策修改/选择。

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