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    • 4. 发明授权
    • Low cost, high speed track and hold circuit
    • 低成本,高速跟踪和保持电路
    • US5736878A
    • 1998-04-07
    • US667557
    • 1996-06-21
    • Scott Cameron McLeod
    • Scott Cameron McLeod
    • G11C27/02H03M1/12
    • G11C27/026
    • A very fast circuit for tracking an input signal and holding the value for digitization comprises a holding capacitor, two charging circuits connected to either side of the capacitor and extending between a constant current generator and a supply voltage. Each charging circuit has an input transistor responsive to an analog input signal and a load including the capacitor, as well as a series switching transistor responsive to a sample signal to permit a tracking mode or forcing a hold mode. The load includes a diode to effect a low resistance during the tracking mode when the capacitor is charging and a very high resistance during the hold mode when the capacitor is discharging.
    • 用于跟踪输入信号并保持数字化值的非常快的电路包括保持电容器,两个充电电路连接到电容器的任一侧并在恒定电流发生器和电源电压之间延伸。 每个充电电路具有响应于模拟输入信号和包括电容器的负载的输入晶体管,以及响应于采样信号以允许跟踪模式或强制保持模式的串联开关晶体管。 负载包括二极管,以在电容器充电期间在跟踪模式期间产生低电阻,并且在电容器放电时在保持模式期间具有非常高的电阻。
    • 8. 发明申请
    • Comparative Ice Drift and Tow Model Analysis for Target Marine Structure
    • 目标海洋结构的比较冰漂和拖曳模型分析
    • US20160001856A1
    • 2016-01-07
    • US14741455
    • 2015-06-17
    • Dave GentleScott CameronTerry Kennedy
    • Dave GentleScott CameronTerry Kennedy
    • B63B43/18B63B49/00G08G3/02
    • B63B43/18B63B49/00B63B2211/06G01V1/38G08G3/02
    • A marine threat monitoring and defense system and method protects a target vessel in icy or other marine regions. The system uses communications, user interfaces, and data sources to identify marine obstacles (e.g., icebergs, ice floes, pack ice, etc.) near a target vessel performing set operations (e.g., a stationed structure performing drilling or production operations or a seismic survey vessel performing exploration operations with a planned route). The system monitors positions of these identified marine obstacles over time relative to the target vessel and predicts any potential threats. When a threat is predicted, the system plans deployment of support vessels, beacons, and the like to respond to the threat. For example, the system can direct a support vessel to divert the path or break up ice threatening the target vessel.
    • 海洋威胁监测和防御系统和方法保护目标船只在冰冷或其他海洋地区。 该系统使用通信,用户界面和数据源来识别执行设定操作的目标船舶附近的海洋障碍(例如,冰山,冰川,包冰等)(例如,执行钻井或生产操作的驻地结构或地震 勘测船舶按照规划路线进行勘探作业)。 该系统监测这些识别的海洋障碍物相对于目标船只的位置,并预测任何潜在的威胁。 当预测到威胁时,系统计划部署支持船只,信标等来应对威胁。 例如,该系统可以引导支撑船只转移路径或破坏威胁目标船的冰。