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    • 3. 发明授权
    • Apparatus and methods for automatically rerouting packets in the event of a link failure
    • 系统,用于在检测到第一链路故障时,经由第二双向链路自动重新路由在第一链路上通常接收的分组
    • US06286058B1
    • 2001-09-04
    • US08833198
    • 1997-04-14
    • Scott E. HrastarTodd A. MerrillRoy A. Bowcutt
    • Scott E. HrastarTodd A. MerrillRoy A. Bowcutt
    • G06F1314
    • H04L61/2015H04L12/2801H04L29/06H04L45/00H04L45/22H04L69/14H04L69/22H04L69/40H04M11/06
    • An asymmetrical network for coupling customer-premises Internet hosts such as personal computers to the Internet. The head end of a CATV system has a high-bandwidth connection to the Internet. The down link connecting the personal computers to the Internet is the cables provided by the CATV system; the up link is a telephone connection to the head end. A router is connected to the down link by means of an RF modem, to the up link by means of an analog modem, and to a LAN which is connected to the Pcs. The router routes IP packets for the hosts that are received on the CATV cable to the hosts via the LAN; it routes IP packets from the hosts that are destined for the Internet to the head end via the telephone line. The asymmetrical network conserves IP addresses and addresses on the CATV cable by dynamically allocating the IP addresses for an RF modem's hosts and an address on the CATV cable for the RF modem in response to a request made by the RF modem via the telephone line. It further saves IP addresses by assigning a non-unique IP address to the router for use inside the LAN. When the CATV system fails, the asymmetrical network automatically begins to use the telephone line as both the up link and the down link, and when the CATV system is restored, the asymmetrical network automatically returns to using the CATV cable as the down link and the telephone line as the up link. A further feature of the asymmetrical network is that the head end components and the RF modem have IP addresses, so that standard TCP/IP protocols can be used to control the asymmetrical network.
    • 用于将客户端互联网主机(如个人计算机)连接到Internet的不对称网络。 CATV系统的前端具有与因特网的高带宽连接。 将个人计算机连接到因特网的下行链路是由CATV系统提供的电缆; 上行链路是到头端的电话连接。 路由器通过RF调制解调器连接到下行链路,通过模拟调制解调器连接到上行链路,并连接到连接到Pcs的LAN。 路由器将经CATV电缆接收的主机的IP数据包通过LAN路由到主机; 它将通过电话线路将来自Internet的主机的IP数据包路由到头端。 不对称网络通过动态分配RF调制解调器主机的IP地址和RF调制解调器的CATV电缆上的地址,通过电话线响应RF调制解调器的请求,节省了CATV电缆上的IP地址和地址。 它通过为路由器分配非唯一的IP地址来进一步保存IP地址,以便在LAN内使用。 当CATV系统发生故障时,不对称网络自动开始使用电话线作为上行链路和下行链路,当CATV系统恢复时,不对称网络自动返回到使用CATV电缆作为下行链路, 电话线作为上行链路。 不对称网络的另一个特征是头端组件和RF调制解调器具有IP地址,使得可以使用标准TCP / IP协议来控制非对称网络。
    • 5. 发明授权
    • Router for use with a link that has a set of concurrent channels
    • 路由器用于具有一组并发通道的链路
    • US06618353B2
    • 2003-09-09
    • US08838833
    • 1997-04-11
    • Todd A. MerrillMark E. SchutteScott E. HrastarRoy A. Bowcutt
    • Todd A. MerrillMark E. SchutteScott E. HrastarRoy A. Bowcutt
    • G01R3108
    • H04L29/12216H04H20/79H04H60/84H04L12/2801H04L12/2856H04L12/2863H04L12/2872H04L12/2874H04L12/5692H04L29/06H04L29/12207H04L29/12283H04L29/12801H04L29/12839H04L41/0213H04L41/0663H04L41/0677H04L61/20H04L61/2015H04L61/2061H04L61/6004H04L61/6022H04L63/08H04L69/40H04N7/17309H04N21/25816H04N21/42676H04N21/6118H04N21/6168
    • An asymmetrical network for coupling customer-premises Internet hosts such as personal computers to the Internet. The head end of a CATV system has a high-bandwidth connection to the Internet. The down link connecting the personal computers to the Internet is the cables provided by the CATV system; the up link is a telephone connection to the head end. A router is connected to the down link by means of an RF modem, to the up link by means of an analog modem, and to a LAN which is connected to the Pcs. The router routes IP packets for the hosts that are received on the CATV cable to the hosts via the LAN; it routes IP packets from the hosts that are destined for the Internet to the head end via the telephone line. The asymmetrical network conserves IP addresses and addresses on the CATV cable by dynamically allocating the IP addresses for an RF modem's hosts and an address on the CATV cable for the RF modem in response to a request made by the RF modem via the telephone line. It further saves IP addresses by assigning a non-unique IP address to the router for use inside the LAN. When the CATV system fails, the asymmetrical network automatically begins to use the telephone line as both the up link and the down link, and when the CATV system is restored, the asymmetrical network automatically returns to using the CATV cable as the down link and the telephone line as the up link. A further feature of the asymmetrical network is that the head end components and the RF modem have IP addresses, so that standard TCP/IP protocols can be used to control the asymmetrical network.
    • 用于将客户端互联网主机(如个人计算机)连接到Internet的不对称网络。 CATV系统的前端具有与因特网的高带宽连接。 将个人计算机连接到因特网的下行链路是由CATV系统提供的电缆; 上行链路是到头端的电话连接。 路由器通过RF调制解调器连接到下行链路,通过模拟调制解调器连接到上行链路,并连接到连接到Pcs的LAN。 路由器将经CATV电缆接收的主机的IP数据包通过LAN路由到主机; 它将通过电话线路将来自Internet的主机的IP数据包路由到头端。 不对称网络通过动态分配RF调制解调器主机的IP地址和RF调制解调器的CATV电缆上的地址,通过电话线响应RF调制解调器的请求,节省了CATV电缆上的IP地址和地址。 它通过为路由器分配非唯一的IP地址来进一步保存IP地址,以便在LAN内使用。 当CATV系统发生故障时,不对称网络自动开始使用电话线作为上行链路和下行链路,当CATV系统恢复时,不对称网络自动返回到使用CATV电缆作为下行链路, 电话线作为上行链路。 不对称网络的另一个特征是头端组件和RF调制解调器具有IP地址,使得可以使用标准TCP / IP协议来控制非对称网络。
    • 6. 发明授权
    • Method of using routing protocols to reroute packets during a link failure
    • 在链路故障期间使用路由协议重新路由数据包的方法
    • US06301223B1
    • 2001-10-09
    • US08837073
    • 1997-04-11
    • Scott E. HrastarTodd A. MerrillRoy A. Bowcutt
    • Scott E. HrastarTodd A. MerrillRoy A. Bowcutt
    • G01R3108
    • H04L29/12216H04H20/79H04H60/84H04L12/2801H04L12/2856H04L12/2863H04L12/2872H04L12/2874H04L12/5692H04L29/06H04L29/12207H04L29/12283H04L29/12801H04L29/12839H04L41/0213H04L41/0663H04L41/0677H04L61/20H04L61/2015H04L61/2061H04L61/6004H04L61/6022H04L63/08H04L69/40H04N7/17309H04N21/25816H04N21/42676H04N21/6118H04N21/6168
    • An asymmetrical network for coupling customer-premises Internet hosts such as personal computers to the Internet. The head end of a CATV system has a high-bandwidth connection to the Internet. The down link connecting the personal computers to the Internet is the cables provided by the CATV system; the up link is a telephone connection to the head end. A router is connected to the down link by means of an RF modem, to the up link by means of an analog modem, and to a LAN which is connected to the Pcs. The router routes IP packets for the hosts that are received on the CATV cable to the hosts via the LAN; it routes IP packets from the hosts that are destined for the Internet to the head end via the telephone line. The asymmetrical network conserves IP addresses and addresses on the CATV cable by dynamically allocating the IP addresses for an RF modem's hosts and an address on the CATV cable for the RF modem in response to a request made by the RF modem via the telephone line. It further saves IP addresses by assigning a non-unique IP address to the router for use inside the LAN. When the CATV system fails, the asymmetrical network automatically begins to use the telephone line as both the up link and the down link, and when the CATV system is restored, the asymmetrical network automatically returns to using the CATV cable as the down link and the telephone line as the up link. A further feature of the asymmetrical network is that the head end components and the RF modem have IP addresses, so that standard TCP/IP protocols can be used to control the asymmetrical network.
    • 用于将客户端互联网主机(如个人计算机)连接到Internet的不对称网络。 CATV系统的前端具有与因特网的高带宽连接。 将个人计算机连接到因特网的下行链路是由CATV系统提供的电缆; 上行链路是到头端的电话连接。 路由器通过RF调制解调器连接到下行链路,通过模拟调制解调器连接到上行链路,并连接到连接到Pcs的LAN。 路由器将经CATV电缆接收的主机的IP数据包通过LAN路由到主机; 它将通过电话线路将来自Internet的主机的IP数据包路由到头端。 不对称网络通过动态分配RF调制解调器主机的IP地址和RF调制解调器的CATV电缆上的地址,通过电话线响应RF调制解调器的请求,节省了CATV电缆上的IP地址和地址。 它通过为路由器分配非唯一的IP地址来进一步保存IP地址,以便在LAN内使用。 当CATV系统发生故障时,不对称网络自动开始使用电话线作为上行链路和下行链路,当CATV系统恢复时,不对称网络自动返回到使用CATV电缆作为下行链路, 电话线作为上行链路。 不对称网络的另一个特征是头端组件和RF调制解调器具有IP地址,使得可以使用标准TCP / IP协议来控制非对称网络。
    • 7. 发明授权
    • Usage statistics collection for a cable data delivery system
    • 电缆数据传输系统的使用统计信息收集
    • US06308328B1
    • 2001-10-23
    • US08835917
    • 1997-04-10
    • Roy A. BowcuttScott E. Hrastar
    • Roy A. BowcuttScott E. Hrastar
    • H04N1173
    • H04L29/12216H04H20/79H04H60/84H04L12/2801H04L12/2856H04L12/2863H04L12/2872H04L12/2874H04L12/5692H04L29/06H04L29/12207H04L29/12283H04L29/12801H04L29/12839H04L41/0213H04L41/0663H04L41/0677H04L61/20H04L61/2015H04L61/2061H04L61/6004H04L61/6022H04L63/08H04L69/40H04N7/17309H04N21/25816H04N21/42676H04N21/6118H04N21/6168
    • Apparatus for recording and collecting usage and other statistical data from components of a cable data network comprises a network manager for maintaining and collecting the statistics. Internet protocol addresses are associated with components of the network. The component maintains a software agent that manages a statistics database. Responsive to a manager request generated at a service provider defined time interval, the component software agent provides the usage statistics to the network manager in real-time during an Internet session with a host. When the host to Internet or other data connection is torn down due to failure, disconnect or inactivity time-out, remaining usage statistics data is collected and the session duration updated with the time of tear down. Usage statistics collected include the amount of data transferred to/from a host, the amount of data that is discarded due to insufficient resource capacity and amount of data that cannot be corrected despite forward error correction used in a downstream high capacity channel to the host. Data traps may be defined and downloaded to components of the network for implementation. As a result, billing of users of the cable data network can be usage sensitive and determined based on actual data transferred (including credit given for errored data) and/or time sensitive based on session duration.
    • 用于从电缆数据网络的组件记录和收集使用和其他统计数据的装置包括用于维护和收集统计信息的网络管理器。 互联网协议地址与网络的组件相关联。 该组件维护一个管理统计数据库的软件代理。 响应于在服务提供商定义的时间间隔产生的管理员请求,组件软件代理在与主机的因特网会话期间实时地向网络管理器提供使用统计信息。 当因互联网或其他数据连接的主机由于故障,断开连接或不活动超时而被拆除时,会收集剩余的使用统计数据,并随着拆卸时间更新会话持续时间。 收集的使用统计数据包括传送到/从主机的数据量,由于资源容量不足而丢弃的数据量,以及尽管在向主机的下游高容量通道中使用前向纠错,无法纠正的数据量。 可以将数据陷阱定义并下载到网络的组件以实现。 因此,有线数据网络用户的计费可以根据实际的数据传输(包括错误数据给定的信用)和/或基于会话持续时间敏感的用户敏感并确定。
    • 9. 发明授权
    • Method of dynamically assigning a logical network address and a link address
    • 动态分配逻辑网络地址和链接地址的方法
    • US06295298B1
    • 2001-09-25
    • US08832714
    • 1997-03-11
    • Scott E. HrastarDavid A. Sedacca
    • Scott E. HrastarDavid A. Sedacca
    • H04Q1100
    • H04L61/2015H04L29/12283H04L29/12801H04L29/12839H04L61/2061H04L61/6004H04L61/6022
    • An asymmetrical network for coupling customer-premises Internet hosts such as personal computers to the Internet. The head end of a CATV system has a high-bandwidth connection to the Internet. The down ink conning the personal computers to the Internet is the cables provided by the CATV system; the up link is a telephone connection to the head end. A router is connected to the down link by means of an RF modem, to the up link by means of an analog modem, and to a LAN which is connected to the Pcs. The router routes IP packets for the hosts that are received on the CATV cable to the hosts via the LAN; it routes IP packets from the hosts that are destined for the Internet to the head end via the telephone line. The asymmetrical network conserves IP addresses and addresses on the CATV cable by dynamically allocating the IP addresses for an RF modem's hosts and an address on the CATV cable for the RF modem in response to a request made by the RF modem via the telephone line. It further saves IP addresses by assigning a non-unique IP address to the router for use inside the LAN. When the CATV system fails, the asymmetrical network automatically begins to use the telephone line as both the up link and the down link, and when the CATV system is restored, the asymmetrical network automatically returns to using the CATV cable as the down link and the telephone line as the up link. A further feature of the asymmetrical network is that the head end components and the RF modem have IP addresses, so that standard TCP/IP protocols can be used to control the asymmetrical network.
    • 用于将客户端互联网主机(如个人计算机)连接到Internet的不对称网络。 CATV系统的前端具有与因特网的高带宽连接。 将个人计算机连接到互联网的下墨是CATV系统提供的电缆; 上行链路是到头端的电话连接。 路由器通过RF调制解调器连接到下行链路,通过模拟调制解调器连接到上行链路,并连接到连接到Pcs的LAN。 路由器将经CATV电缆接收的主机的IP数据包通过LAN路由到主机; 它将通过电话线路将来自Internet的主机的IP数据包路由到头端。 不对称网络通过动态分配RF调制解调器主机的IP地址和RF调制解调器的CATV电缆上的地址,通过电话线响应RF调制解调器的请求,节省了CATV电缆上的IP地址和地址。 它通过为路由器分配非唯一的IP地址来进一步保存IP地址,以便在LAN内使用。 当CATV系统发生故障时,不对称网络自动开始使用电话线作为上行链路和下行链路,当CATV系统恢复时,不对称网络自动返回到使用CATV电缆作为下行链路, 电话线作为上行链路。 不对称网络的另一个特征是头端组件和RF调制解调器具有IP地址,使得可以使用标准TCP / IP协议来控制非对称网络。