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1. 发明申请

US20120158805A1 NON-DISRUPTIVE DATA MOVEMENT AND NODE REBALANCING IN EXTREME OLTP ENVIRONMENTS 有权
标题翻译：非破坏性数据移动和极端OLTP环境中的节点重新分配
公开(公告)号：US20120158805A1
公开(公告)日：2012-06-21
申请号：US12970219
申请日：2010-12-16
申请人： Mihnea ANDRE , Xun Cheng , Yanhong Wang , Elton Philip Wildermuth , Heping Shang , Stephen C. Shepherd
发明人： Mihnea ANDRE , Xun Cheng , Yanhong Wang , Elton Philip Wildermuth , Heping Shang , Stephen C. Shepherd
IPC分类号： G06F17/30
CPC分类号： G06F17/30584 , G06F17/3048
摘要： Systems and methods for non-disruptive cache startup, shutdown, data partition movement, and node rebalancing for a data fabric within a data grid in a database environment. The data grid is a clustered in-memory database (IMDB) cache comprising one or more data fabrics including multiple IMDB cache nodes. The method takes a time tag and moves data from source to destination nodes while allowing updates to data on the source nodes. The method propagates updates occurring after the time tag to destination nodes from source nodes and switches applications and ownership to the destination nodes. Another method slices data for a partitioned fabric and stores slices on nodes. Another method starts a data fabric by moving data from a grid backend to the nodes. In an embodiment, another method rebalances nodes in a non-disruptive manner. When a fabric is shutdown, the method saves data from the nodes to the grid backend.
摘要翻译：用于数据库环境中数据网格内数据结构的非中断缓存启动，关闭，数据分区移动和节点重新平衡的系统和方法。数据网格是包含一个或多个包括多个IMDB缓存节点的数据结构的聚簇内存数据库（IMDB）缓存。该方法采用时间标签，并将数据从源节点移动到目标节点，同时允许更新源节点上的数据。该方法将时间标签之后发生的更新从源节点传播到目标节点，并将应用程序和所有权交换到目标节点。另一种方法为分区结构分割数据，并在节点上存储切片。另一种方法是通过将数据从网格后端移动到节点来启动数据结构。在一个实施例中，另一种方法以非破坏性方式重新平衡节点。当结构关闭时，该方法将数据从节点保存到网格后端。

2. 发明授权

US09075858B2 Non-disruptive data movement and node rebalancing in extreme OLTP environments 有权
标题翻译：极端OLTP环境中的非破坏性数据移动和节点重新平衡
公开(公告)号：US09075858B2
公开(公告)日：2015-07-07
申请号：US12970219
申请日：2010-12-16
申请人： Mihnea Andre , Xun Cheng , Yanhong Wang , Elton Philip Wildermuth , Heping Shang , Stephen C. Shepherd
发明人： Mihnea Andre , Xun Cheng , Yanhong Wang , Elton Philip Wildermuth , Heping Shang , Stephen C. Shepherd
IPC分类号： G06F17/30
CPC分类号： G06F17/30584 , G06F17/3048
摘要： Systems and methods for non-disruptive cache startup, shutdown, data partition movement, and node rebalancing for a data fabric within a data grid in a database environment. The data grid is a clustered in-memory database (IMDB) cache comprising one or more data fabrics including multiple IMDB cache nodes. The method takes a time tag and moves data from source to destination nodes while allowing updates to data on the source nodes. The method propagates updates occurring after the time tag to destination nodes from source nodes and switches applications and ownership to the destination nodes. Another method slices data for a partitioned fabric and stores slices on nodes. Another method starts a data fabric by moving data from a grid backend to the nodes. In an embodiment, another method rebalances nodes in a non-disruptive manner. When a fabric is shutdown, the method saves data from the nodes to the grid backend.
摘要翻译：用于数据库环境中数据网格内数据结构的非中断缓存启动，关闭，数据分区移动和节点重新平衡的系统和方法。数据网格是包含一个或多个包括多个IMDB缓存节点的数据结构的聚簇内存数据库（IMDB）缓存。该方法采用时间标签，并将数据从源节点移动到目标节点，同时允许更新源节点上的数据。该方法将时间标签之后发生的更新从源节点传播到目标节点，并将应用程序和所有权交换到目标节点。另一种方法为分区结构分割数据，并在节点上存储切片。另一种方法是通过将数据从网格后端移动到节点来启动数据结构。在一个实施例中，另一种方法以非破坏性方式重新平衡节点。当结构关闭时，该方法将数据从节点保存到网格后端。

3. 发明授权

US09454574B2 Bloom filter costing estimation 有权
标题翻译：布鲁姆滤波器成本估算
公开(公告)号：US09454574B2
公开(公告)日：2016-09-27
申请号：US14229211
申请日：2014-03-28
申请人： Xun Cheng
发明人： Xun Cheng
IPC分类号： G06F17/30
CPC分类号： G06F17/30469
摘要： Bloom filter cost estimation engine for improved performance and accuracy is described. An example method includes building an execution plan for a join operation having a plurality of levels, where the execution plan includes a top join operator at a top level, a leaf scan operator on a bottom level, and one or more intermediate operators between the top level and the bottom level. A row reduction effect of applying a Bloom filter is determined by simulating a semi-join operation over table statistic representation at each of the plurality of levels of the execution plan. A cost savings of the join operation is calculated based on the row reduction effect at the each of the plurality of the levels.
摘要翻译：描述了用于提高性能和精度的布鲁姆滤波器成本估计引擎。示例性方法包括为具有多个级别的联接操作构建执行计划，其中执行计划包括顶层的顶部连接运算符，底层的叶扫描运算符以及顶部的一个或多个中间运算符水平和底层。通过在执行计划的多个级别中的每一个级别上的表统计表示上模拟半连接操作来确定应用布隆过滤器的行减少效果。基于在多个级别中的每一个级别的行减少效果来计算加入操作的成本节省。

4. 发明授权

US07777248B1 Semiconductor device for latch-up prevention 有权
标题翻译：用于防止闩锁的半导体装置
公开(公告)号：US07777248B1
公开(公告)日：2010-08-17
申请号：US12242413
申请日：2008-09-30
申请人： Graeme B. Boyd , Xun Cheng , Ariel D. E. Sibley
发明人： Graeme B. Boyd , Xun Cheng , Ariel D. E. Sibley
IPC分类号： H01L29/74
CPC分类号： H01L29/7436 , H01L29/0692
摘要： A semiconductor device is provided for preventing Latch-up in Silicon Controlled Rectifiers (SCRs) when these SCRs become activated. Embodiments of the invention use a natively doped region having high resistance to separate the NPN transistor from the PNP transistor that form the SCR, and/or to isolate the entire SCR from the injector source in order to prevent latch-up. The high resistance of the natively doped region allows to achieve the separation resistance needed in a smaller space, as compared to the space required to achieve the same separation resistance in a well. Accordingly, the invention provides for more robust and cost effective latch-up prevention devices.
摘要翻译：提供一种半导体器件，用于在这些SCR变为激活状态时防止硅控制整流器（SCR）中的锁存。本发明的实施例使用具有高电阻的本地掺杂区域将NPN晶体管与形成SCR的PNP晶体管分离，和/或将整个SCR与注入源隔离，以防止闭锁。与在井中实现相同的分离电阻所需的空间相比，本地掺杂区域的高电阻允许在更小的空间中实现所需的分离电阻。因此，本发明提供了更加鲁棒和具有成本效益的闩锁防止装置。

5. 发明申请

US20150261820A1 SPLITTING OF A JOIN OPERATION TO ALLOW PARALLELIZATION 有权
标题翻译：分开操作以允许并行化
公开(公告)号：US20150261820A1
公开(公告)日：2015-09-17
申请号：US14210239
申请日：2014-03-13
申请人： Xun Cheng , Peter Schneider
发明人： Xun Cheng , Peter Schneider
IPC分类号： G06F17/30
CPC分类号： G06F17/30466
摘要： A system and method for processing a database query is described. In response to detection that a database query involves a star or snowflake join operation, a join operator in a preliminary query plan can be split into a build operator and a probe operator. The probe operator can be placed in a final query plan in the same place as the join operator in the preliminary query plan, while the build operator can be placed beneath the probe operator in the final query plan, between an exchange operator and the exchange operator's child from the preliminary query plan.
摘要翻译：描述用于处理数据库查询的系统和方法。响应于检测到数据库查询涉及星形或雪花连接操作，初步查询计划中的连接运算符可以分为构建运算符和探测运算符。探测操作员可以在初步查询计划中与加入运算符相同的位置放置在最终查询计划中，而构建运算符可以放置在最终查询计划中的探测运算符之下，交换运算符和交换运算符小孩从初步查询计划。

6. 发明授权

US07719806B1 Systems and methods for ESD protection 失效
标题翻译： ESD保护的系统和方法
公开(公告)号：US07719806B1
公开(公告)日：2010-05-18
申请号：US11672304
申请日：2007-02-07
申请人： Graeme B. Boyd , Xun Cheng , Bijit Patel
发明人： Graeme B. Boyd , Xun Cheng , Bijit Patel
IPC分类号： H02H9/00 , H02H1/00
CPC分类号： H01L27/027
摘要： A negative electrostatic discharge (ESD) protection network or circuit is described. The circuit can provide protection against a negative-going ESD transient. One embodiment, along with standard positive ESD protection networks, can discharge ESD currents in both polarities and is able to tolerate a positive/negative voltage that is higher than the maximum voltage allowed for the given fabrication process. It can be used to protect an I/O pin that can be exposed to a relatively wide signal swing range.
摘要翻译：描述了负静电放电（ESD）保护网络或电路。该电路可以提供防止负向ESD瞬变的保护。一个实施例，连同标准的正ESD保护网络可以放电两个极性的ESD电流，并且能够容忍高于给定制造工艺允许的最大电压的正/负电压。它可以用于保护可以暴露在相对宽的信号摆幅范围内的I / O引脚。

7. 发明授权

US07646063B1 Compact CMOS ESD layout techniques with either fully segmented salicide ballasting (FSSB) in the source and/or drain regions 有权
标题翻译：紧凑型CMOS ESD布局技术，在源极和/或漏极区域具有完全分段的自对准沉积（FSSB）
公开(公告)号：US07646063B1
公开(公告)日：2010-01-12
申请号：US11451610
申请日：2006-06-12
申请人： Graeme B. Boyd , William M. Lye , Xun Cheng
发明人： Graeme B. Boyd , William M. Lye , Xun Cheng
IPC分类号： H01L23/62
CPC分类号： H01L27/027 , H01L29/665 , H01L29/7833 , H01L2924/0002 , H01L2924/00
摘要： Transistor structures for relatively even current balancing within a device and methods for fabricating the same are disclosed. These devices can be used in relatively compact MOSFET Electrostatic Discharge (ESD) protection structures, such as in snapback devices. One embodiment utilizes a salisided exclusion layer for segmentation of the source and/or drain diffusion areas, while the others utilize poly for segmentation of the source and/or drain area. Also, diffusion is used generically herein and, for example, includes implants. These techniques provide relatively good ESD tolerance while consuming a relatively small amount of area, and provide significant area and parasitic capacitance reduction over the state of the art without sacrificing ESD performance. These techniques are also applicable to current balancing within relatively high current devices, such as drivers.
摘要翻译：公开了一种用于器件内相对均匀电流平衡的晶体管结构及其制造方法。这些器件可用于相对紧凑的MOSFET静电放电（ESD）保护结构，例如快速恢复器件。一个实施例使用取向排除层来分割源极和/或漏极扩散区域，而另一个实施例使用多晶硅来分离源极和/或漏极区域。此外，扩散通常在本文中使用，并且例如包括植入物。这些技术在消耗相对较小的面积的同时提供相对良好的ESD耐受性，并且在不牺牲ESD性能的情况下，在现有技术领域提供显着的面积和寄生电容减小。这些技术也适用于相对较高的当前设备（如驱动器）内的电流平衡。

8. 发明授权

US09213740B2 System and methodology for automatic tuning of database query optimizer 有权
标题翻译：自动调整数据库查询优化器的系统和方法
公开(公告)号：US09213740B2
公开(公告)日：2015-12-15
申请号：US11871022
申请日：2007-10-11
申请人： Mihnea Andrei , Xun Cheng , Edwin Anthony Seputis , Xiao Ming Zhou
发明人： Mihnea Andrei , Xun Cheng , Edwin Anthony Seputis , Xiao Ming Zhou
IPC分类号： G06F17/30
CPC分类号： G06F17/30442 , G06F17/30424 , G06F17/30463
摘要： System and methodology for automatic tuning of database query optimizer is described. In one embodiment, in a database system having an optimizer for selecting a query plan for executing a database query, a method of the present invention is described for automatically tuning query performance to prevent query performance regression that may occur during upgrade of the database system from a prior version to a new version, the method comprises steps of: in response to receiving a given database query for execution, specifying a query plan generated by the prior version's optimizer as a baseline best plan for executing the given database query; generating at least one new query plan using the new version's optimizer; learning performance for each new query plan generated by recording corresponding query execution metrics; if a given new query plan is observed to have better performance than the best plan previously specified, specifying that given new query plan to be the best plan for executing the given database query; if a given new query plan is observed to have worse performance than the best plan previously specified, specifying that given new query plan to be a bad plan to be avoided in the future; and automatically tuning future execution of the given database query by using the query plan that the system learned was the best plan.
摘要翻译：描述了数据库查询优化器自动调优的系统和方法。在一个实施例中，在具有用于选择用于执行数据库查询的查询计划的优化器的数据库系统中，描述了本发明的方法，用于自动调整查询性能以防止在数据库系统升级期间可能发生的查询性能回归该方法包括以下步骤：响应于接收给定的数据库查询以执行，将由先前版本的优化器生成的查询计划指定为用于执行给定数据库查询的基准最佳计划; 使用新版本的优化器生成至少一个新的查询计划; 通过记录相应的查询执行指标生成的每个新查询计划的学习性能; 如果观察到给定的新查询计划具有比先前指定的最佳方案更好的性能，则指定给定的新查询计划是执行给定数据库查询的最佳计划; 如果观察到给定的新查询计划的性能比先前指定的最佳方案更差，则指定给定的新查询计划是将来避免的坏计划; 并通过使用系统学到的查询计划来自动调整给定数据库查询的未来执行情况。

9. 发明申请

US20150261819A1 STAR AND SNOWFLAKE JOIN QUERY PERFORMANCE 有权
标题翻译： STAR AND SNOWFLAKE加入查询性能
公开(公告)号：US20150261819A1
公开(公告)日：2015-09-17
申请号：US14210153
申请日：2014-03-13
申请人： Xun Cheng , Peter Schneider
发明人： Xun Cheng , Peter Schneider
IPC分类号： G06F17/30
CPC分类号： G06F17/30466 , G06F17/30979
摘要： A system and method for processing a database query is described. The method can, in response to detection that a database query involves a star or snowflake join operation, determine a selectivity ratio for each of a plurality of dimension tables. The selectivity ratio having a lower value can correspond to a more restrictive dimension table. Thereafter, a table ordering can be created beginning with a fact table and continuing with each of the dimension tables in ascending order of their corresponding selectivity ratios. Then a query plan involving join operations between successive tables in the table ordering can be created.
摘要翻译：描述用于处理数据库查询的系统和方法。响应于检测到数据库查询涉及星形或雪花连接操作，该方法可以确定多个维度表中的每一个的选择率。具有较低值的选择比可对应于更严格的维度表。此后，可以从事实表开始创建表排序，并按其相应的选择比率的升序继续每个维度表。然后，可以创建一个涉及表顺序中连续表之间的连接操作的查询计划。

10. 发明授权

US07985644B1 Methods for forming fully segmented salicide ballasting (FSSB) in the source and/or drain region 有权
标题翻译：在源极和/或漏极区域形成完全分段的自杀化合物镇流器（FSSB）的方法
公开(公告)号：US07985644B1
公开(公告)日：2011-07-26
申请号：US12606691
申请日：2009-10-27
申请人： Graeme B. Boyd , William M. Lye , Xun Cheng
发明人： Graeme B. Boyd , William M. Lye , Xun Cheng
IPC分类号： H01L21/8234
CPC分类号： H01L27/027 , H01L29/665 , H01L29/7833 , H01L2924/0002 , H01L2924/00
摘要： Transistor structures for relatively even current balancing within a device and methods for fabricating the same are disclosed. These devices can be used in relatively compact MOSFET Electrostatic Discharge (ESD) protection structures, such as in snapback devices. One embodiment utilizes a salisided exclusion layer for segmentation of the source and/or drain diffusion areas, while the others utilize poly for segmentation of the source and/or drain area. Also, diffusion is used generically herein and, for example, includes implants. These techniques provide relatively good ESD tolerance while consuming a relatively small amount of area, and provide significant area and parasitic capacitance reduction over the state of the art without sacrificing ESD performance. These techniques are also applicable to current balancing within relatively high current devices, such as drivers.
摘要翻译：公开了一种用于器件内相对均匀电流平衡的晶体管结构及其制造方法。这些器件可用于相对紧凑的MOSFET静电放电（ESD）保护结构，例如快速恢复器件。一个实施例使用取向排除层来分割源极和/或漏极扩散区域，而另一个实施例使用多晶硅来分离源极和/或漏极区域。此外，扩散通常在本文中使用，并且例如包括植入物。这些技术在消耗相对较小的面积的同时提供相对良好的ESD耐受性，并且在不牺牲ESD性能的情况下，在现有技术领域提供显着的面积和寄生电容减小。这些技术也适用于相对较高的当前设备（如驱动器）内的电流平衡。

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