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1. 发明授权

US5953340A Adaptive networking system 失效
标题翻译：自适应网络系统
公开(公告)号：US5953340A
公开(公告)日：1999-09-14
申请号：US759139
申请日：1996-12-02
申请人： Craig M. Scott , Arthur T. Bennett
发明人： Craig M. Scott , Arthur T. Bennett
IPC分类号： G06F13/00 , H04L12/413 , H04L12/44 , H04L12/46 , H04L12/56 , H04L29/06 , H04Q1/00
CPC分类号： H04L29/06 , H04L12/44 , H04L12/462 , H04L12/5693 , H04L47/6225 , H04L49/90 , H04L49/9063 , H04L12/4625 , H04L69/08 , H04L69/18
摘要： An adaptive networking device including a switch module having several ports and operable according to a first protocol and a repeater module also having several ports and operable according to a second protocol. The adaptive networking device preferably includes several connector ports for coupling to external data devices, such as computers, work stations, file servers, modems, printers, repeaters, switches, routers, hubs, concentrators, or the like, for establishing a networking system. Also, the adaptive networking device preferably includes an interface circuit for each connector port for detecting communication from a data device on the corresponding connector port and for coupling that data device to either the switch module or the repeater module. The interface circuit preferably senses the protocol of the communication and automatically couples the data device to the corresponding and compatible communication module. In a second embodiment, the adaptive networking device includes a converter coupled between the switch module and the repeater module for converting the protocols between the switch and repeater modules. In a more particular embodiment, the first and second protocols operate at first and second data rates, respectively.
摘要翻译：一种自适应网络设备，包括具有多个端口并可根据第一协议操作的交换机模块和还具有若干端口并且可根据第二协议操作的中继器模块。自适应网络设备优选地包括用于耦合到外部数据设备（诸如计算机，工作站，文件服务器，调制解调器，打印机，中继器，交换机，路由器，集线器，集中器等）的几个连接器端口，用于建立网络系统。此外，自适应网络设备优选地包括用于每个连接器端口的接口电路，用于检测来自相应连接器端口上的数据设备的通信，并且用于将该数据设备耦合到交换模块或中继器模块。接口电路优选地感测通信的协议，并且将数据设备自动地耦合到相应和兼容的通信模块。在第二实施例中，自适应网络设备包括耦合在交换机模块和中继器模块之间的转换器，用于转换交换机和中继器模块之间的协议。在更具体的实施例中，第一和第二协议分别以第一和第二数据速率操作。

2. 发明授权

US4468665A Downhole digital power amplifier for a measurements-while-drilling telemetry system 失效
标题翻译：井下数字功率放大器，用于测量同时钻探遥测系统
公开(公告)号：US4468665A
公开(公告)日：1984-08-28
申请号：US229799
申请日：1981-01-30
申请人： S. Tom Thawley , Craig M. Scott
发明人： S. Tom Thawley , Craig M. Scott
IPC分类号： E21B47/12 , G01V1/40
CPC分类号： E21B47/122
摘要： A downhole digital power amplifier comprises a device which, through digital means, provides a sinusoidal, variable frequency, variable power and variably phase-shift modulated output for the transmission of data from a downhole sensor arrangement to an uphole receiver. Selection and variation of frequency, power and modulation are made through digital inputs. The device provides these functions at extra low frequencies (ELF) low-to-high power output, and varying phase-shift keying. The downhole digital power amplifier (68) comprises, in a preferred embodiment, an input shift register (81) for receiving a digital bit stream, a programmable frequency divider (82), a dead man timer circuit (84), a counter (86), a sync circuit (88), a PROM (90) (programmable read-only memory) for generating a digital sinusoidal output, a DAC (92) (digital-to-analog converter) for converting the digital sinusoidal output to an analog sinusoidal output, a power supply control circuit (94), an analog divider (96), and a conventional power amplifier (98). The dead man timer circuit detects normal operation and a fault condition, and controls the power supply control circuit to "power down" the amplifier when reception of a digital bit stream is not imminent during normal operation, and controls the power supply control circuit to periodically generate a "failure informant" message during a fault condition.
摘要翻译：井下数字功率放大器包括通过数字装置提供用于从井下传感器装置向井上接收器传输数据的正弦，可变频率，可变功率和可变相移调制输出的装置。通过数字输入进行频率，功率和调制的选择和变化。该器件以超低频（ELF）低功耗输出提供这些功能，并提供不同的相移键控功能。井下数字功率放大器（68）在优选实施例中包括用于接收数字位流的输入移位寄存器（81），可编程分频器（82），死人定时器电路（84），计数器（86 ），用于产生数字正弦输出的同步电路（88），PROM（90）（可编程只读存储器），用于将数字正弦输出转换为模拟信号的DAC（92）（数模转换器）正弦输出，电源控制电路（94），模拟分频器（96）和常规功率放大器（98）。死人定时器电路检测正常操作和故障状态，并且在正常操作期间接收到数字比特流不立即控制电源控制电路“放大”放大器，并且将电源控制电路周期性地控制在故障状态期间生成“故障通知者”消息。

3. 发明授权

US5854790A Method and apparatus for networking data devices using an uplink module 失效
标题翻译：使用上行链路模块联网数据设备的方法和装置
公开(公告)号：US5854790A
公开(公告)日：1998-12-29
申请号：US891511
申请日：1997-07-11
申请人： Craig M. Scott , Li Tung Wang , Arthur T. Bennett , Ahmad Nouri
发明人： Craig M. Scott , Li Tung Wang , Arthur T. Bennett , Ahmad Nouri
IPC分类号： H04L12/44 , H04L12/46 , H04L12/56 , H04L12/28 , G06F15/16 , H04L12/413
CPC分类号： H04L12/46 , H04L12/44 , H04L49/25 , H04L49/351
摘要： A network (10) includes several local networks (32, 34, 36). Each local network (32, 34, 36) includes a repeater (12, 16, 20) coupled to data devices (14, 18, 22). The combination of the repeater (12, 16, 20) and the data devices (14, 18, 22) form a collision domain for managing communications within the local network (32, 34, 36). Uplink modules (40, 44) manage communications between the local networks (32, 34, 36) by isolating collision domains and generating collision indications when messages cannot be transmitted. The uplink modules (40, 44) may also implement bridging, routing, or filtering capabilities that inhibit transmission of an intra-network message beyond its local network (32, 34, 36).
摘要翻译：网络（10）包括多个本地网络（32,34,36）。每个本地网络（32,34,36）包括耦合到数据设备（14,18,22）的中继器（12,16,20）。中继器（12,16,20）和数据设备（14,18,22）的组合形成用于管理本地网络（32,34,36）内的通信的冲突域。上行链路模块（40,44）通过隔离冲突域来管理本地网络（32,34,36）之间的通信，并且当不能发送消息时产生冲突指示。上行链路模块（40,44）还可以实现阻止网络内消息超出其本地网络（32,34,36）的传输的桥接，路由或过滤能力。

4. 发明授权

US5796738A Multiport repeater with collision detection and jam signal generation 失效
标题翻译：具有碰撞检测和堵塞信号生成的多端口中继器
公开(公告)号：US5796738A
公开(公告)日：1998-08-18
申请号：US403206
申请日：1995-03-13
申请人： Craig M. Scott , Li Tung Wang , Arthur T. Bennett , Ahmad Nouri
发明人： Craig M. Scott , Li Tung Wang , Arthur T. Bennett , Ahmad Nouri
IPC分类号： H04L12/44 , H04L12/46 , H04L12/56 , H04L12/28
CPC分类号： H04L12/46 , H04L12/44 , H04L49/25 , H04L49/351
摘要： A network (10) includes several local networks (32, 34, 36). Each local network (32, 34, 36) includes a repeater (12, 16, 20) coupled to data devices (14, 18, 22). The combination of the repeater (12, 16, 20) and the data devices (14, 18, 22) form a collision domain for managing communications within the local network (32, 34, 36). Uplink modules (40, 44) manage communications between the local networks (32, 34, 36) by isolating collision domains and generating collision indications when messages cannot be transmitted. The uplink modules (40, 44) may also implement bridging, routing, or filtering capabilities that inhibit transmission of an intra-network message beyond its local network (32, 34, 36).
摘要翻译：网络（10）包括多个本地网络（32,34,36）。每个本地网络（32,34,36）包括耦合到数据设备（14,18,22）的中继器（12,16,20）。中继器（12,16,20）和数据设备（14,18,22）的组合形成用于管理本地网络（32,34,36）内的通信的冲突域。上行链路模块（40,44）通过隔离冲突域来管理本地网络（32,34,36）之间的通信，并且当不能发送消息时产生冲突指示。上行链路模块（40,44）还可以实现阻止网络内消息超出其本地网络（32,34,36）的传输的桥接，路由或过滤能力。

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