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    • 2. 发明申请
    • PULSE CONTROLLED SOFT START SCHEME FOR BUCK CONVERTER
    • 用于变换器的脉冲控制软启动方案
    • US20090315530A1
    • 2009-12-24
    • US12141085
    • 2008-06-18
    • SHAILENDRA KUMAR BARANWAL
    • SHAILENDRA KUMAR BARANWAL
    • G05F1/56
    • H02M3/1588H02M1/36Y02B70/1466
    • A pulse controlled soft start scheme for a buck converter using a low value of on-chip capacitor is disclosed. In one embodiment, a system for generating a ramped reference voltage to soft start a buck converter, includes a current source coupled to a positive power supply, a capacitor coupled to a ground, a pass transistor device coupled to the current source and the capacitor in series, and a control pulse generator for generating a control pulse forwarded to the pass transistor device. The ramped reference voltage forwarded to the buck converter includes a voltage across the capacitor. The control pulse regulates a flow of a current from the current source to the capacitor via the pass transistor device for generating the ramped reference voltage.
    • 公开了一种使用片上电容器的低值的降压转换器的脉冲控制软启动方案。 在一个实施例中,用于产生斜坡参考电压以软启动降压转换器的系统包括耦合到正电源的电流源,耦合到地的电容器,耦合到电流源的传输晶体管器件和耦合到电流源的电容器 串联和控制脉冲发生器,用于产生转发到传输晶体管器件的控制脉冲。 转移到降压转换器的斜坡参考电压包括电容器两端的电压。 控制脉冲通过传输晶体管器件调节电流从电流源到电容器的电流,以产生斜坡参考电压。
    • 5. 发明申请
    • DELETING A CONTINUOUS QUERY FROM A DATA STREAM MANAGEMENT SYSTEM CONTINUING TO OPERATE ON OTHER QUERIES
    • 从数据流管理系统中删除连续查询,继续运行其他查询
    • US20090106215A1
    • 2009-04-23
    • US11874850
    • 2007-10-18
    • Namit JainAnand SrinivasanShailendra Kumar Mishra
    • Namit JainAnand SrinivasanShailendra Kumar Mishra
    • G06F17/30
    • G06F17/30516
    • A first continuous query is deleted from several continuous queries that are being executed, by performing different actions that depend on how resources are shared therebetween. As an example, a second continuous query is deleted if a view is referenced by the first continuous query, and if the view is built on the second continuous query, and if the view is not referenced by any query other than the first continuous query. Such deletion is followed by compiling the second continuous query, followed by updating the view to refer to a newly-compiled version of the second continuous query. As another example, if an operator in the first continuous query is not used by any other query, this operator is de-scheduled from execution, and any exclusively-owned resources are released. Also, data to be read by the operator and data generated by the operator, if present in shared resources, are deleted therefrom.
    • 通过执行取决于资源如何共享的不同动作,从正在执行的几个连续查询中删除第一个连续查询。 作为示例,如果第一连续查询引用了视图,并且视图是建立在第二连续查询上,并且视图没有被第一连续查询之外的任何查询引用,则删除第二连续查询。 这样的删除之后是编译第二连续查询,随后更新视图以引用第二连续查询的新编译版本。 作为另一示例,如果第一连续查询中的运算符不被任何其他查询使用,则该运算符从执行中去调度,并且释放任何专有资源。 此外,由用户读取的数据和由运营商产生的数据(如果存在于共享资源中)将被删除。
    • 6. 发明申请
    • Support for sharing computation between aggregations in a data stream management system
    • 支持在数据流管理系统中的聚合之间共享计算
    • US20090106198A1
    • 2009-04-23
    • US11977440
    • 2007-10-20
    • Anand SrinivasanNamit JainShailendra Kumar Mishra
    • Anand SrinivasanNamit JainShailendra Kumar Mishra
    • G06F17/30
    • G06F17/30516G06F17/30489
    • A computer is programmed to process a continuous query that is known to perform a new aggregation on one or more stream(s) of data, using one or more other aggregations on the stream(s). The computer creates an operator to execute the continuous query, and schedules the operator for execution in a specific order. In several embodiments, the computer determines the order based on dependency of the new aggregation on other aggregation(s), and on the order of performance of the other aggregation(s). The new aggregation is scheduled for performance after performance of each of the other aggregations. The computer is further programmed to pass results of the other aggregations to the new aggregation, by execution of a predetermined function. Support for use of the other aggregations results within the new aggregation eliminates redundant computation of the other aggregations within the new aggregation. The new aggregation may be user defined or built-in.
    • 计算机被编程为处理已知的在一条或多条数据流上执行新聚合的连续查询,使用流上的一个或多个其他聚合。 计算机创建一个运算符来执行连续查询,并按照特定顺序安排运营商执行。 在几个实施例中,计算机基于新聚合对其他聚合的依赖性以及其他聚合的性能的顺序来确定顺序。 新的聚合计划在执行每个其他聚合后执行性能。 计算机还被编程为通过执行预定功能将其他聚合的结果传递给新聚合。 在新集合中支持使用其他聚合结果可以消除新聚合中其他聚合的冗余计算。 新聚合可以是用户定义的或内置的。