公开(公告)号：US08508208B2

公开(公告)日：2013-08-13

申请号：US12830074

申请日：2010-07-02

申请人： Jonathan Klein

发明人： Jonathan Klein

IPC分类号： G05F1/00

CPC分类号： H02M3/1582

摘要： This document provides methods and apparatus configured to efficiently regulate an output voltage near a desired voltage level, for example, under varying input or load conditions. An example apparatus can include a regulator having a boost controller configured to provide voltage to an output of the regulator when at least one of the output voltage or the input voltage is below a first threshold voltage and a buck controller configured to provide voltage to the output of the regulator when at least one of the output voltage or the input voltage is above a second threshold voltage. Further, the regulator can be configured to provide the input voltage at the output of the regulator when at least one of the input voltage or the output voltage is between the first and second threshold voltages. In some examples, the first threshold is below the second threshold.

摘要翻译： 该文献提供了被配置为有效地调节在期望电压电平附近的输出电压的方法和装置，例如在变化的输入或负载条件下。 示例性装置可以包括具有升压控制器的调节器，该升压控制器被配置为当输出电压或输入电压中的至少一个低于第一阈值电压时提供电压到调节器的输出，并且降压控制器被配置为向输出提供电压 当输出电压或输入电压中的至少一个高于第二阈值电压时。 此外，当输入电压或输出电压中的至少一个在第一和第二阈值电压之间时，调节器可被配置为在调节器的输出处提供输入电压。 在一些示例中，第一阈值低于第二阈值。

公开(公告)号：US08326816B2

公开(公告)日：2012-12-04

申请号：US12775322

申请日：2010-05-06

申请人： Romain Colle ,  Benoit Dageville ,  Karl Dias ,  Leonidas Galanis ,  Supiti Buranawatanachoke ,  Jonathan Klein ,  Efstratios Papadomanolakis ,  Yujun Wang

发明人： Romain Colle ,  Benoit Dageville ,  Karl Dias ,  Leonidas Galanis ,  Supiti Buranawatanachoke ,  Jonathan Klein ,  Efstratios Papadomanolakis ,  Yujun Wang

IPC分类号： G06F17/30

CPC分类号： G06F17/3056 ,  G06F17/303

摘要： A method, apparatus, and computer readable medium for preserving data dependency during replay of database commands without strictly preserving a global ordering of the database commands is provided. A capture process captures a workload of database commands executed by a production system. The captured workload includes object identifiers that identify database objects that were referenced directly or indirectly during execution of the database commands by the production system. The captured workload also includes an indication of whether the database objects were potentially read or written during execution of the commands. The workload is processed to determine that an object accessed during execution of a command was previously modified during execution of one or more other commands. A replay process on a test database system prevents the command from being replayed until after the one or more other commands have been replayed to modify the object.

摘要翻译： 提供了一种用于在数据库命令重放期间保持数据依赖性而不严格保留数据库命令的全局排序的方法，装置和计算机可读介质。 捕获过程捕获生产系统执行的数据库命令的工作负载。 捕获的工作负载包括标识在生产系统执行数据库命令期间直接或间接引用的数据库对象的对象标识符。 捕获的工作负载还包括在执行命令期间是否可能读取或写入数据库对象的指示。 处理工作负载以确定在执行一个或多个其他命令期间先前修改了在执行命令期间访问的对象。 测试数据库系统上的重播过程可以防止在重播一个或多个其他命令以修改对象之后重播该命令。

公开(公告)号：US08161323B2

公开(公告)日：2012-04-17

申请号：US12252128

申请日：2008-10-15

申请人： Balasubrahmanya Kuchibhotla ,  Jonathan Klein ,  Karl Dias ,  Uri Shaft

发明人： Balasubrahmanya Kuchibhotla ,  Jonathan Klein ,  Karl Dias ,  Uri Shaft

IPC分类号： G06F11/00

CPC分类号： G06F11/0778 ,  G06F11/0748 ,  G06F11/0781 ,  H04L41/0681 ,  H04L41/16

摘要： Techniques for proactively and reactively running diagnostic functions. These diagnostic functions help to improve diagnostics of conditions detected in a monitored system and to limit/quarantine the damages caused by the detected conditions. In one embodiment, a health monitor infrastructure is provided that is configured to perform one or more health checks in a monitored system for diagnosing and/or gathering information related to the system. The one or more health checks may be invoked pro-actively on a scheduled basis, reactively in response to a condition detected in the system, or may even be invoked manually by a user such as a system administrator.

摘要翻译： 主动和反应地运行诊断功能的技术。 这些诊断功能有助于改善在受监控系统中检测到的条件的诊断，并限制/检疫由检测到的条件引起的损害。 在一个实施例中，提供健康监视器基础设施，其被配置为在受监视的系统中执行一个或多个健康检查以诊断和/或收集与该系统有关的信息。 响应于在系统中检测到的状况，或者甚至可以由诸如系统管理员的用户手动地调用一个或多个健康检查，可以在调度的基础上主动地调用。

公开(公告)号：US08138739B1

公开(公告)日：2012-03-20

申请号：US12245231

申请日：2008-10-03

申请人： Gabriel Eirea ,  Jonathan Klein

发明人： Gabriel Eirea ,  Jonathan Klein

IPC分类号： G05F1/00

CPC分类号： H02M3/1588 ,  H02M2001/0003 ,  Y02B70/1466

摘要： A hysteretic DC-DC converter includes an observer circuit configured to generate an observer control signal for injection into the control loop of the converter. The observer circuit may be configured to differentiate the output voltage of the converter to generate a differentiated output voltage. A transconductance amplifier may be configured to output the observer control signal from the differentiated output voltage. The observer control signal may be injected into the control loop in a summing node.

摘要翻译： 迟滞DC-DC转换器包括观察器电路，其被配置为产生用于注入到转换器的控制环路中的观察者控制信号。 观察器电路可以被配置为区分转换器的输出电压以产生微分输出电压。 跨导放大器可以被配置为从差分输出电压输出观察者控制信号。 观察者控制信号可以被注入到求和节点中的控制回路中。

公开(公告)号：US20110295801A1

公开(公告)日：2011-12-01

申请号：US13207763

申请日：2011-08-11

申请人： Karl DIAS ,  Leonidas GALANIS ,  Jonathan KLEIN ,  Venkateshwaran VENKATARAMANI ,  Yujun WANG

发明人： Karl DIAS ,  Leonidas GALANIS ,  Jonathan KLEIN ,  Venkateshwaran VENKATARAMANI ,  Yujun WANG

IPC分类号： G06F17/30

CPC分类号： G06F17/30286

摘要： A method and apparatus for capturing database system workload and replaying that workload in a database system is provided. According to one aspect, in order to subject a test database system to the same workload to which the production database system actually would be subjected, a database server in the production system captures and records workload that the database server receives from external entities. This captured workload is processed. Processes external to a database server in the test database system send the processed workload to that database server. As a result, the test database system is subjected to the same workload to which the production database system originally was subjected. The foregoing technique permits a database administrator to determine how the production database system will fare if the difference that is present in the test database system is introduced into the production database system.

摘要翻译： 提供了一种用于捕获数据库系统工作负载并在数据库系统中重播该工作负载的方法和装置。 根据一个方面，为了使测试数据库系统处于生产数据库系统实际受到的相同工作负载，生产系统中的数据库服务器捕获并记录数据库服务器从外部实体接收的工作负载。 处理此捕获的工作负载。 测试数据库系统中数据库服务器外部的进程将处理的工作负载发送到该数据库服务器。 因此，测试数据库系统受到生产数据库系统最初遭受的相同工作量的影响。 如果将测试数据库系统中存在的差异引入到生产数据库系统中，则上述技术允许数据库管理员确定生产数据库系统将如何展示。

公开(公告)号：US20110276550A1

公开(公告)日：2011-11-10

申请号：US12775322

申请日：2010-05-06

申请人： Romain Colle ,  Benoit Dageville ,  Karl Dias ,  Leonidas Galanis ,  Supiti Buranawatanachoke ,  Jonathan Klein ,  Efstratios Papadomanolakis ,  Yujun Wang

发明人： Romain Colle ,  Benoit Dageville ,  Karl Dias ,  Leonidas Galanis ,  Supiti Buranawatanachoke ,  Jonathan Klein ,  Efstratios Papadomanolakis ,  Yujun Wang

IPC分类号： G06F17/30

CPC分类号： G06F17/3056 ,  G06F17/303

摘要： A method, apparatus, and computer readable medium for preserving data dependency during replay of database commands without strictly preserving a global ordering of the database commands is provided. A capture process captures a workload of database commands executed by a production system. The captured workload includes object identifiers that identify database objects that were referenced directly or indirectly during execution of the database commands by the production system. The captured workload also includes an indication of whether the database objects were potentially read or written during execution of the commands. The workload is processed to determine that an object accessed during execution of a command was previously modified during execution of one or more other commands. A replay process on a test database system prevents the command from being replayed until after the one or more other commands have been replayed to modify the object.

摘要翻译： 提供了一种用于在数据库命令重放期间保持数据依赖性而不严格保留数据库命令的全局排序的方法，装置和计算机可读介质。 捕获过程捕获生产系统执行的数据库命令的工作负载。 捕获的工作负载包括标识在生产系统执行数据库命令期间直接或间接引用的数据库对象的对象标识符。 捕获的工作负载还包括在执行命令期间是否可能读取或写入数据库对象的指示。 处理工作负载以确定在执行一个或多个其他命令期间先前修改了在执行命令期间访问的对象。 测试数据库系统上的重播过程可以防止在重播一个或多个其他命令以修改对象之后重播该命令。

公开(公告)号：US07782038B2

公开(公告)日：2010-08-24

申请号：US11726939

申请日：2007-03-23

申请人： Jonathan Klein

发明人： Jonathan Klein

IPC分类号： G05F1/00

CPC分类号： H02M1/36 ,  Y10S323/901

摘要： In one embodiment, a soft start circuit includes a slew rate controller to limit inrush current to a voltage regulator during start up. The output voltage of the regulator may be compared to a previous sampled value to determine the slew rate of the output voltage. The slew rate of the output voltage may be controlled by adjusting the current limit of the regulator. The current limit of the regulator may be adjusted using digital circuits, such as a counter and a digital to analog converter, or analog circuits using a pulsed current source, for example. The slew rate may be controlled to exceed a target slew rate or to stay within a range of slew rate limits.

摘要翻译： 在一个实施例中，软启动电路包括转换速率控制器，以在启动期间限制到电压调节器的浪涌电流。 调节器的输出电压可以与先前的采样值进行比较，以确定输出电压的转换速率。 输出电压的转换速率可以通过调节调节器的电流限制来控制。 调节器的电流限制可以使用诸如计数器和数模转换器之类的数字电路或使用脉冲电流源的模拟电路进行调整。 压摆率可以被控制到超过目标转换速率或者保持在压摆率限制的范围内。

公开(公告)号：US07752181B2

公开(公告)日：2010-07-06

申请号：US10984113

申请日：2004-11-08

申请人： Jonathan Klein ,  Bipul Sinha ,  Amit Ganesh

发明人： Jonathan Klein ,  Bipul Sinha ,  Amit Ganesh

IPC分类号： G06F17/30

CPC分类号： G06F17/30312 ,  G06F17/30371

摘要： Embodiments of the present invention include a method for performing a data uniqueness check in a set of sorted data blocks comprising accessing data to be inserted into the set of sorted data blocks, determining a proper data block of the set of sorted data blocks for which the data to be inserted should be located based on a first sorting key. The method further includes examining the proper data block for an existing data entry and if the proper data block is empty, the method further includes inserting the data to be inserted into the proper data block of the set of sorted data blocks.

摘要翻译： 本发明的实施例包括一种用于在一组分类数据块中执行数据唯一性检查的方法，包括访问要插入到该排序数据块集合中的数据，确定该排序数据块集合中的适当数据块， 应插入的数据应基于第一个排序键来定位。 该方法还包括检查现有数据条目的正确数据块，如果正确的数据块为空，则该方法还包括将要插入的数据插入到该排序数据块集合的正确数据块中。

公开(公告)号：US07675281B1

公开(公告)日：2010-03-09

申请号：US11606462

申请日：2006-11-30

申请人： James Holt ,  Jonathan Klein

发明人： James Holt ,  Jonathan Klein

IPC分类号： G05F1/00

CPC分类号： H02M3/1588 ,  Y02B70/1466

摘要： In one embodiment, in a power converter system having first and second switches connected in a half-bridge arrangement at a common node from which current flows through an inductor to a regulated output terminal, wherein the regulated output terminal is connectable to a load, wherein the first and second switches are turned on and off in cycles, a method is provided for synchronous rectification. The method includes: initiating a cycle in which the first switch is turned on; developing a timer based on the on-time of the first switch during the cycle; turning off the first switch and turning on the second switch during the cycle; and outputting a control signal to turn off the second switch when either the timer expires or a new cycle is initiated to turn on the first switch, thereby providing synchronous rectification in the power converter system.

摘要翻译： 在一个实施例中，在具有第一和第二开关的功率转换器系统中，第一和第二开关以半桥布置连接在电流流过电感器到公共节点的公共节点上，其中调节输出端子可连接到负载，其中 第一和第二开关的周期性接通和断开，提供了用于同步整流的方法。 该方法包括：启动第一开关导通的周期; 在周期期间基于第一开关的导通时间开发定时器; 在循环中关闭第一个开关并打开第二个开关; 并且当定时器期满或启动新周期以导通第一开关时输出控制信号以关闭第二开关，从而在功率转换器系统中提供同步整流。

公开(公告)号：US20080232144A1

公开(公告)日：2008-09-25

申请号：US11726939

申请日：2007-03-23

申请人： Jonathan Klein

发明人： Jonathan Klein

IPC分类号： H02M1/00

CPC分类号： H02M1/36 ,  Y10S323/901

摘要： In one embodiment, a soft start circuit includes a slew rate controller to limit inrush current to a voltage regulator during start up. The output voltage of the regulator may be compared to a previous sampled value to determine the slew rate of the output voltage. The slew rate of the output voltage may be controlled by adjusting the current limit of the regulator. The current limit of the regulator may be adjusted using digital circuits, such as a counter and a digital to analog converter, or analog circuits using a pulsed current source, for example. The slew rate may be controlled to exceed a target slew rate or to stay within a range of slew rate limits.

摘要翻译： 在一个实施例中，软启动电路包括转换速率控制器，以在启动期间限制到电压调节器的浪涌电流。 调节器的输出电压可以与先前的采样值进行比较，以确定输出电压的转换速率。 输出电压的转换速率可以通过调节调节器的电流限制来控制。 调节器的电流限制可以使用诸如计数器和数模转换器之类的数字电路或使用脉冲电流源的模拟电路进行调整。 压摆率可以被控制到超过目标转换速率或者保持在压摆率限制的范围内。