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1. 发明授权

US07099308B2 Router for use with a link that has a set of concurrent channels 有权
标题翻译：路由器用于具有一组并发通道的链路
公开(公告)号：US07099308B2
公开(公告)日：2006-08-29
申请号：US10457124
申请日：2003-06-09
申请人： Todd A. Merrill , Mark E. Schutte , Scott E. Hrastar , Roy A. Bowcutt
发明人： Todd A. Merrill , Mark E. Schutte , Scott E. Hrastar , Roy A. Bowcutt
IPC分类号： H04L12/56
CPC分类号： H04L29/12216 , H04H20/79 , H04H60/84 , H04L12/2801 , H04L12/2856 , H04L12/2863 , H04L12/2872 , H04L12/2874 , H04L12/5692 , H04L29/06 , H04L29/12207 , H04L29/12283 , H04L29/12801 , H04L29/12839 , H04L41/0213 , H04L41/0663 , H04L41/0677 , H04L61/20 , H04L61/2015 , H04L61/2061 , H04L61/6004 , H04L61/6022 , H04L63/08 , H04L69/40 , H04N7/17309 , H04N21/25816 , H04N21/42676 , H04N21/6118 , H04N21/6168
摘要： An asymmetrical network is disclosed 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 CATV system supports a plurality of concurrent channels to which an RF modem is capable of tuning. The RE modem is capable of receiving information from the head end that specifies the channel to which the RF modem should tune. Once tuned to the specified channel, the RF modem is capable of utilizing the CATV system for carrying high-speed data traffic. The high-speed data traffic can support Internet access using the Internet Protocol (IP).
摘要翻译：公开了一种不对称网络，用于将诸如个人计算机的客户端互联网主机与因特网相连。 CATV系统的前端具有与因特网的高带宽连接。 CATV系统支持RF调制解调器能够进行调谐的多个并发信道。 RE调制解调器能够从头端接收指定RF调制解调器应调谐的信道的信息。一旦调谐到指定的通道，RF调制解调器就能利用CATV系统来承载高速数据流量。高速数据流量可以使用互联网协议（IP）支持Internet访问。

2. 发明授权

US06519224B2 Method of using routing protocols to reroute packets during a link failure 有权
标题翻译：在链路故障期间使用路由协议重新路由数据包的方法
公开(公告)号：US06519224B2
公开(公告)日：2003-02-11
申请号：US09903281
申请日：2001-07-11
申请人： Scott E. Hrastar , Todd A. Merrill , Roy A. Bowcutt
发明人： Scott E. Hrastar , Todd A. Merrill , Roy A. Bowcutt
IPC分类号： G01R3108
CPC分类号： H04L29/12216 , H04H20/79 , H04H60/84 , H04L12/2801 , H04L12/2856 , H04L12/2863 , H04L12/2872 , H04L12/2874 , H04L12/5692 , H04L29/06 , H04L29/12207 , H04L29/12283 , H04L29/12801 , H04L29/12839 , H04L41/0213 , H04L41/0663 , H04L41/0677 , H04L61/20 , H04L61/2015 , H04L61/2061 , H04L61/6004 , H04L61/6022 , H04L63/08 , H04L69/40 , H04N7/17309 , H04N21/25816 , H04N21/42676 , H04N21/6118 , H04N21/6168
摘要： The preferred embodiment of the present invention is a cable modem apparatus for reliably providing a personal computer access to the Internet through a cable television link and a public switched telephone network link. The invention includes: a cable television link failure detector connected to the cable television link; a message generator connected to the cable television link failure detector, where the message generator is configured to generate at least one message responsive to the cable television link failure detector; and a message transmitter connected to the message generator, where the message transmitter is configured to transmit the at least one message through the public switched telephone network link to cause Internet communications to be communicated to the personal computer through the public switch telephone network link.
摘要翻译：本发明的优选实施例是一种电缆调制解调器装置，用于通过有线电视链路和公共交换电话网络链路可靠地提供个人计算机访问因特网。本发明包括：连接到有线电视链路的有线电视链路故障检测器; 连接到有线电视链路故障检测器的消息发生器，其中消息发生器被配置为响应于有线电视链路故障检测器生成至少一个消息; 以及连接到消息发生器的消息发送器，其中消息发送器被配置为通过公共交换电话网络链路发送至少一个消息，以使得互联网通信通过公共交换机电话网络链路传送到个人计算机。

3. 发明授权

US06324267B1 Two-tiered authorization and authentication for a cable data delivery system 失效
标题翻译：电缆数据传输系统的两层授权和认证
公开(公告)号：US06324267B1
公开(公告)日：2001-11-27
申请号：US08835916
申请日：1997-04-10
申请人： Scott E. Hraster , Roy A. Bowcutt
发明人： Scott E. Hraster , Roy A. Bowcutt
IPC分类号： H04M1108
CPC分类号： H04L29/12216 , H04H20/79 , H04H60/84 , H04L12/2801 , H04L12/2856 , H04L12/2863 , H04L12/2872 , H04L12/2874 , H04L12/5692 , H04L29/06 , H04L29/12207 , H04L29/12283 , H04L29/12801 , H04L29/12839 , H04L41/0213 , H04L41/0663 , H04L41/0677 , H04L61/20 , H04L61/2015 , H04L61/2061 , H04L61/6004 , H04L61/6022 , H04L63/08 , H04L69/40 , H04N7/17309 , H04N21/25816 , H04N21/42676 , H04N21/6118 , H04N21/6168
摘要： Apparatus for a cable television subscriber to log onto a computer network with a modem over an upstream path using a USERID and password. The network validates the subscriber USERID and subscriber password with a stored database of valid USERIDs and associated passwords. After the USERID and password are validated, the modem then provides its electronic serial number to the network for validation against a stored database of authorized serial numbers. Upon additional validation of the modem's serial number, the subscriber is authorized to use the network.
摘要翻译：用于有线电视用户使用USERID和密码通过上游路径使用调制解调器登录到计算机网络的装置。网络使用存储的有效USERID数据库和相关密码来验证用户USERID和订户密码。在验证了USERID和密码后，调制解调器然后将其电子序列号提供给网络，以便针对存储的授权序列号的数据库进行验证。在对调制解调器序列号进行额外验证后，用户有权使用该网络。

4. 发明授权

US06286058B1 Apparatus and methods for automatically rerouting packets in the event of a link failure 失效
标题翻译：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
公开(公告)号：US06286058B1
公开(公告)日：2001-09-04
申请号：US08833198
申请日：1997-04-14
申请人： Scott E. Hrastar , Todd A. Merrill , Roy A. Bowcutt
发明人： Scott E. Hrastar , Todd A. Merrill , Roy A. Bowcutt
IPC分类号： G06F1314
CPC分类号： H04L61/2015 , H04L12/2801 , H04L29/06 , H04L45/00 , H04L45/22 , H04L69/14 , H04L69/22 , H04L69/40 , H04M11/06
摘要： 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.
摘要翻译：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

US06282208B1 Data traffic control in a data modem system 失效
标题翻译：数据调制解调器系统中的数据流量控制
公开(公告)号：US06282208B1
公开(公告)日：2001-08-28
申请号：US08992711
申请日：1997-12-17
申请人： Roy A. Bowcutt , Brett Black , Jeffery L. Thompson
发明人： Roy A. Bowcutt , Brett Black , Jeffery L. Thompson
IPC分类号： G08C1500
CPC分类号： H04L29/12216 , H04H20/79 , H04H60/84 , H04L12/2801 , H04L12/2856 , H04L12/2863 , H04L12/2872 , H04L12/2874 , H04L12/5692 , H04L29/06 , H04L29/12207 , H04L29/12283 , H04L29/12801 , H04L29/12839 , H04L41/0213 , H04L41/0663 , H04L41/0677 , H04L61/20 , H04L61/2015 , H04L61/2061 , H04L61/6004 , H04L61/6022 , H04L63/08 , H04L69/40 , H04N7/17309 , H04N21/25816 , H04N21/42676 , H04N21/6118 , H04N21/6168
摘要： Method and apparatus for monitoring data traffic through a cable data network in order to guarantee a minimum and maximum bandwidth and burst length. Traffic statistics are kept as credits that are only updated as needed. Each cable modem in the network is assigned a limit on the maximum amount of traffic that it may transmit and receive depending on the service level that the subscriber has purchased. When that limit is exceeded, traffic for that modem will no longer allowed to pass through the system.
摘要翻译：用于通过有线数据网络监视数据流量的方法和装置，以便保证最小和最大带宽和突发长度。流量统计信息保存为仅在需要时更新的信用额度。根据用户购买的服务级别，网络中的每个电缆调制解调器都可以分配其可能发送和接收的最大流量限制。当超出该限制时，该调制解调器的流量将不再允许通过系统。

6. 发明授权

US06308328B1 Usage statistics collection for a cable data delivery system 失效
标题翻译：电缆数据传输系统的使用统计信息收集
公开(公告)号：US06308328B1
公开(公告)日：2001-10-23
申请号：US08835917
申请日：1997-04-10
申请人： Roy A. Bowcutt , Scott E. Hrastar
发明人： Roy A. Bowcutt , Scott E. Hrastar
IPC分类号： H04N1173
CPC分类号： H04L29/12216 , H04H20/79 , H04H60/84 , H04L12/2801 , H04L12/2856 , H04L12/2863 , H04L12/2872 , H04L12/2874 , H04L12/5692 , H04L29/06 , H04L29/12207 , H04L29/12283 , H04L29/12801 , H04L29/12839 , H04L41/0213 , H04L41/0663 , H04L41/0677 , H04L61/20 , H04L61/2015 , H04L61/2061 , H04L61/6004 , H04L61/6022 , H04L63/08 , H04L69/40 , H04N7/17309 , H04N21/25816 , H04N21/42676 , H04N21/6118 , H04N21/6168
摘要： 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.
摘要翻译：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。

7. 发明授权

US06301223B1 Method of using routing protocols to reroute packets during a link failure 失效
标题翻译：在链路故障期间使用路由协议重新路由数据包的方法
公开(公告)号：US06301223B1
公开(公告)日：2001-10-09
申请号：US08837073
申请日：1997-04-11
申请人： Scott E. Hrastar , Todd A. Merrill , Roy A. Bowcutt
发明人： Scott E. Hrastar , Todd A. Merrill , Roy A. Bowcutt
IPC分类号： G01R3108
CPC分类号： H04L29/12216 , H04H20/79 , H04H60/84 , H04L12/2801 , H04L12/2856 , H04L12/2863 , H04L12/2872 , H04L12/2874 , H04L12/5692 , H04L29/06 , H04L29/12207 , H04L29/12283 , H04L29/12801 , H04L29/12839 , H04L41/0213 , H04L41/0663 , H04L41/0677 , H04L61/20 , H04L61/2015 , H04L61/2061 , H04L61/6004 , H04L61/6022 , H04L63/08 , H04L69/40 , H04N7/17309 , H04N21/25816 , H04N21/42676 , H04N21/6118 , H04N21/6168
摘要： 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.
摘要翻译：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。

8. 发明授权

US6052819A System and method for detecting correcting and discarding corrupted data packets in a cable data delivery system 失效
标题翻译：用于检测在电缆数据传送系统中校正和丢弃损坏的数据分组的系统和方法
公开(公告)号：US6052819A
公开(公告)日：2000-04-18
申请号：US835966
申请日：1997-04-11
申请人： James E Barker , Roy A. Bowcutt , Scott E. Hrastar , Todd A. Merrill , David A. Sedacca
发明人： James E Barker , Roy A. Bowcutt , Scott E. Hrastar , Todd A. Merrill , David A. Sedacca
IPC分类号： G06F15/16 , G06F15/173 , G08C15/00 , H03M13/00 , H04H20/79 , H04H60/84 , H04L12/24 , H04L12/28 , H04L12/54 , H04L29/06 , H04L29/12 , H04L29/14 , H04M11/00 , H04M11/08 , H04N7/10 , H04N7/173 , H04N9/00 , H04N21/258 , H04N21/426 , H04N21/61
CPC分类号： H04L29/12216 , H04H20/79 , H04L12/2801 , H04L12/2856 , H04L12/2863 , H04L12/2872 , H04L12/2874 , H04L12/5692 , H04L29/06 , H04L29/12283 , H04L29/12801 , H04L29/12839 , H04L41/0213 , H04L41/0663 , H04L41/0677 , H04L61/2015 , H04L61/2061 , H04L61/6004 , H04L61/6022 , H04L63/08 , H04L69/40 , H04N21/25816 , H04N21/42676 , H04N21/6118 , H04N21/6168 , H04N7/17309 , H04H60/84 , H04L29/12207 , H04L61/20
摘要： A method for transporting digital data from a sender to a receiver in a system where the digital data is broken into data packets for transmission over radio frequency channels, each data packet including forward error-correcting code, the method comprising the steps of receiving the data packets at the receiver; reconstructing the data packets to the digital data, the forward error-correcting code for fixing corrupted data packets; and halting the data packet reconstructing step if a data packet is uncorrectable.
摘要翻译：一种在数字数据被分解成用于通过射频信道传输的数据分组的系统中将数字数据从发送方传送到接收机的方法，每个数据分组包括前向纠错码，所述方法包括以下步骤：接收数据接收器上的数据包; 将数据包重建为数字数据，用于修复损坏的数据包的前向纠错码; 以及如果数据分组是不可校正的，则停止所述数据分组重建步骤。

9. 发明授权

US06618353B2 Router for use with a link that has a set of concurrent channels 失效
标题翻译：路由器用于具有一组并发通道的链路
公开(公告)号：US06618353B2
公开(公告)日：2003-09-09
申请号：US08838833
申请日：1997-04-11
申请人： Todd A. Merrill , Mark E. Schutte , Scott E. Hrastar , Roy A. Bowcutt
发明人： Todd A. Merrill , Mark E. Schutte , Scott E. Hrastar , Roy A. Bowcutt
IPC分类号： G01R3108
CPC分类号： H04L29/12216 , H04H20/79 , H04H60/84 , H04L12/2801 , H04L12/2856 , H04L12/2863 , H04L12/2872 , H04L12/2874 , H04L12/5692 , H04L29/06 , H04L29/12207 , H04L29/12283 , H04L29/12801 , H04L29/12839 , H04L41/0213 , H04L41/0663 , H04L41/0677 , H04L61/20 , H04L61/2015 , H04L61/2061 , H04L61/6004 , H04L61/6022 , H04L63/08 , H04L69/40 , H04N7/17309 , H04N21/25816 , H04N21/42676 , H04N21/6118 , H04N21/6168
摘要： 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.
摘要翻译：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。

10. 发明授权

US5450416A Apparatus and method for testing multifunction communications networks 失效
标题翻译：用于测试多功能通信网络的装置和方法
公开(公告)号：US5450416A
公开(公告)日：1995-09-12
申请号：US935072
申请日：1992-08-25
申请人： Roy A. Bowcutt , Stephen M. Igel , Walter P. Krapohl , Pankaj S. Lunia
发明人： Roy A. Bowcutt , Stephen M. Igel , Walter P. Krapohl , Pankaj S. Lunia
IPC分类号： G06F11/22 , G06F11/273 , G06F13/00 , H04L1/24 , H04L12/26 , H04L12/413 , G06F11/00 , H04J1/16
CPC分类号： G06F11/2294 , H04L1/24 , H04L12/2697 , H04L43/50 , H04L12/413
摘要： An improved apparatus and method for isolating faults in a complex communications network such as a collision-detection network. A wrap plug connected to a communications adapter of a computer system simulates multiple functions of the network environment, rather than a single, hardwired function. A method performs a comprehensive yet convenient diagnostic test of multiple functions of the adapter while a terminal is disconnected from the network.
摘要翻译：一种用于隔离诸如碰撞检测网络的复杂通信网络中的故障的改进的装置和方法。连接到计算机系统的通信适配器的环绕插件模拟网络环境的多个功能，而不是单个硬连线功能。当终端与网络断开连接时，一种方法可以对适配器的多种功能进行全面而便利的诊断测试。

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