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1. 发明申请

US20060004758A1 An Efficient Locking Protocol for Sub-Document Concurrency Control Using Prefix Encoded Node Identifiers in XML Databases 有权
标题翻译：使用XML数据库中的前缀编码节点标识符进行子文档并发控制的高效锁定协议
公开(公告)号：US20060004758A1
公开(公告)日：2006-01-05
申请号：US10709416
申请日：2004-05-04
申请人： James Teng , Brian Vickery , Guogen Zhang
发明人： James Teng , Brian Vickery , Guogen Zhang
IPC分类号： G06F17/30
CPC分类号： G06F17/30362
摘要： A system and method for concurrency control of hierarchically structured data is provided. Lock requests on a target node are processed by exploiting ancestor-descendant information encoded into prefix encoded node identifiers (IDs). A set of implicit locks on ancestor nodes along a path from an immediate parent of a target node to a root node is derived from an explicit lock request on a target node. A logical lock tree describing existing lock modes for ancestor nodes is consulted to determine compatibility with the derived set of implicit locks. If existing lock modes for ancestor nodes are compatible with the derived set of implicit locks, a lock request on a target node is granted. Otherwise, the lock request is denied. A lock release request follows the reverse process; a target node in a particular transaction is released, as are subsequent locks on its ancestors made by the same transaction.
摘要翻译：提供了一种用于分级结构化数据并发控制的系统和方法。通过利用编码为前缀编码节点标识符（ID）的祖先 - 后代信息来处理目标节点上的锁定请求。从目标节点的直接父节点到根节点的路径上的祖先节点上的一组隐式锁派生自目标节点上的显式锁定请求。查询描述祖先节点的现有锁模式的逻辑锁树，以确定与导出的隐式锁定集的兼容性。如果祖先节点的现有锁定模式与导出的隐式锁定集合兼容，则会授予目标节点上的锁定请求。否则，锁请求被拒绝。锁定释放请求遵循相反的过程; 特定事务中的目标节点被释放，同一事务由其祖先的后续锁也被释放。

2. 发明申请

US20070043751A1 Scalable storage schemes for native XML column data of relational tables 有权
标题翻译：关系表的本机XML列数据的可扩展存储方案
公开(公告)号：US20070043751A1
公开(公告)日：2007-02-22
申请号：US11209598
申请日：2005-08-22
申请人： Yao-Ching Chen , Fen-Ling Lin , Jerry Mukai , Kalpana Shyam , James Teng , Guogen Zhang
发明人： Yao-Ching Chen , Fen-Ling Lin , Jerry Mukai , Kalpana Shyam , James Teng , Guogen Zhang
IPC分类号： G06F7/00
CPC分类号： G06F17/30595 , G06F17/30923
摘要： A method and system for providing a scalable storage scheme for native hierarchically structured data of relational tables, includes a base table with indicator columns with information pertaining to hierarchically structured data of a document, data tables for storing the hierarchically structured data corresponding to the indicator columns, and node identifier indexes corresponding to the data tables for mapping between the indicator columns and the hierarchically structured data in the data tables. In an embodiment, actual data for each hierarchically structured data (such as XML) column is stored in a separate data table, and each data table has a separate node identifier index. The node identifier index is searched with a key containing the document identifier and a logical node identifier is used, and a record identifier of a record in the data table containing the node assigned the logical node identifier is retrieved.
摘要翻译：提供用于关系表的本机分层结构化数据的可伸缩存储方案的方法和系统包括具有与文档的分层结构化数据有关的信息的指示符列的基表，用于存储对应于指示符列的分层结构化数据的数据表，以及与数据表对应的节点标识符索引，用于在指标列与数据表中的分层结构化数据之间进行映射。在一个实施例中，每个分级结构化数据（例如XML）列的实际数据被存储在单独的数据表中，并且每个数据表具有单独的节点标识符索引。使用包含文档标识符的密钥搜索节点标识符索引，并且使用逻辑节点标识符，并且检索包含分配有逻辑节点标识符的节点的数据表中的记录的记录标识符。

3. 发明申请

US20090174485A1 OVER-CURRENT SENSING DURING NARROW GATE DRIVE OPERATION OF CLASS D OUTPUT STAGES 有权
标题翻译： N型门驱动期间的超电流感测D类输出级的操作
公开(公告)号：US20090174485A1
公开(公告)日：2009-07-09
申请号：US11970289
申请日：2008-01-07
申请人： James Teng , Qiong M. Li , Cetin Kaya
发明人： James Teng , Qiong M. Li , Cetin Kaya
IPC分类号： H03F1/52 , H03F3/217
CPC分类号： H03F3/2173 , H03F1/523 , H03F2200/03 , H03F2200/351
摘要： Two transistors of a class D output stage are driven by complementary, variable duty cycle signals PWM+ and PWM−. When the pulse width of the PWM+ signal becomes too narrow for reliable operation of prior art over-current protection circuits sensing the drain to source voltage of FET1 driven by PWM+, a Narrow Pulse Detector generates a signal indicative of this narrow pulse condition. A Negative Current Sense circuit measures the drain to source voltage across FET2 during the much longer conduction time of FET2 driven by PWM−. Because of the energy stored in the series inductor coupled to the output of the class D stage, a negative current flows through this FET2 during its conduction time. The resulting drain to source voltage of FET2 is measured and compared to a threshold. If the voltage indicative of current is over the threshold, and the Narrow Pulse Detector output indicates a narrow pulse condition, then an inhibit signal is generated which reduces current. A second Negative Current Sense circuit is utilized to similarly detect over-current conditions when the pulse width of PWM− becomes too narrow for reliable operation of prior art over-current protection circuits, thus protecting both FETs in the class D output stage from excessive current.
摘要翻译： D类输出级的两个晶体管由互补的可变占空比信号PWM +和PWM-驱动。当PWM +信号的脉冲宽度变得太窄，以便于感测由PWM +驱动的FET1的漏极 - 源极电压的现有技术的过电流保护电路的可靠操作时，窄脉冲检测器产生指示该窄脉冲条件的信号。在由PWM驱动的FET2的更长的导通时间内，负电流检测电路测量FET2两端的漏源电压。由于存储在串联电感器中的能量耦合到D级的输出端，所以在其导通时间期间，负电流流过该FET2。测量FET2的所得到的源极到源极电压并将其与阈值进行比较。如果指示电流的电压超过阈值，并且窄脉冲检测器输出指示窄脉冲条件，则产生减少电流的禁止信号。使用第二负电流检测电路来类似地检测当PWM的脉冲宽度变得太窄以致于现有技术的过电流保护电路的可靠操作时的过电流状况，从而保护D类输出级中的两个FET免受过大的电流。

4. 发明申请

US20070055687A1 System and method for minimizing data outage time and data loss while handling errors detected during recovery 失效
标题翻译：减少数据中断时间和数据丢失的系统和方法，同时处理在恢复期间检测到的错误
公开(公告)号：US20070055687A1
公开(公告)日：2007-03-08
申请号：US11219409
申请日：2005-09-02
申请人： Jeffrey Josten , Laura Kunioka-Weis , Thomas Majithia , Haakon Roberts , James Teng
发明人： Jeffrey Josten , Laura Kunioka-Weis , Thomas Majithia , Haakon Roberts , James Teng
IPC分类号： G06F7/00
CPC分类号： G06F17/30371 , Y10S707/99953
摘要： A system, method and a computer usable medium tangibly embodying a program of instructions executable by the computer to perform a computer-based method for restoration of a database from a failed data recovery. For each failed data recovery the method generates a log error data set having log records of a faulty transaction unapplied to data due to inconsistency. Log error data set is directly useable by a log analysis tool to regenerate and redo the unapplied faulty transaction to recover the data and by a print log tool to diagnose the faulty transaction. Log records mimic format of records of an archive log data set and identify data objects, faulty transactions on the data objects and a range of the unapplied data objects' updates.
摘要翻译：一种系统，方法和计算机可用介质，其有形地体现由计算机执行的指令程序，以执行用于从故障数据恢复恢复数据库的基于计算机的方法。对于每个失败的数据恢复，该方法生成一个日志错误数据集，其中由于不一致性而导致的错误事务的日志记录未应用于数据。日志错误数据集可以由日志分析工具直接使用，以重新生成并重做未应用的故障事务以恢复数据，并通过打印日志工具来诊断故障事务。日志记录模拟存档日志数据集记录的格式，并识别数据对象，数据对象上的故障事务和一系列未应用的数据对象的更新。

5. 发明申请

US20060230013A1 System and method for performing just-in-time priming of a database cache 有权
标题翻译：用于执行数据库高速缓存的即时启动的系统和方法
公开(公告)号：US20060230013A1
公开(公告)日：2006-10-12
申请号：US11303714
申请日：2005-12-16
申请人： Namik Hrle , James Teng
发明人： Namik Hrle , James Teng
IPC分类号： G06F17/30
CPC分类号： G06F17/30442 , G06F17/3048 , G06F17/30492
摘要： A system for retrieving stored data and/or index pages, receives a database request, generates an access plan for the database request for accessing data rows and/or index entries according to the statement, and generates a priming process by selecting a set of data and/or index pages. The set of data and/or index pages is a super-set or the exact set of the pages needed for accessing data rows and/or index entries according to the access plan. The present system retrieves the data and/or index pages of the set before executing the database request according to the access plan. The execution of the database request is performed by scanning the index and data pages preloaded into the cache. This reduces the number of necessary disk reads during execution.
摘要翻译：一种用于检索存储的数据和/或索引页面的系统，接收数据库请求，根据该语句生成访问数据行和/或索引条目的数据库请求的访问计划，并通过选择一组数据来生成启动过程和/或索引页。一组数据和/或索引页是根据访问计划访问数据行和/或索引条目所需的超集或精确的页面集合。根据访问计划，本系统在执行数据库请求之前检索该集合的数据和/或索引页。通过扫描预先加载到缓存中的索引和数据页执行数据库请求。这样可以减少执行期间所需的磁盘读取次数。

6. 发明申请

US20050091233A1 Method and system for preserving an original table schema 失效
标题翻译：用于保留原始表模式的方法和系统
公开(公告)号：US20050091233A1
公开(公告)日：2005-04-28
申请号：US10693184
申请日：2003-10-24
申请人： Craig Friske , Regina Liu , James Ruddy , James Teng , Julie Watts
发明人： Craig Friske , Regina Liu , James Ruddy , James Teng , Julie Watts
IPC分类号： G06F7/00 , G06F17/30
CPC分类号： G06F17/30297 , G06F11/1435 , G06F17/30477 , G06F2201/80 , Y10S707/99933 , Y10S707/99954
摘要： The present invention is related to a method and system for preserving an original table schema for a table in a database system that supports dynamic table schema changes. The method and system includes storing the original table schema for the table in a designated table prior to performing a schema change on the table. By storing the original table schema in the designated table, a backup copy of the table that includes rows which are not self-describing can be used for data recovery.
摘要翻译：本发明涉及一种用于维护支持动态表模式改变的数据库系统中的表的原始表模式的方法和系统。所述方法和系统包括在对表进行模式更改之前将表的原始表模式存储在指定的表中。通过将原始表模式存储在指定表中，可以使用包含不自描述行的表的备份副本进行数据恢复。

7. 发明授权

US4035572A Method of making chewing gum base 失效
标题翻译：制作口香糖基的方法
公开(公告)号：US4035572A
公开(公告)日：1977-07-12
申请号：US576170
申请日：1975-05-09
申请人： Marcella C. Stubits , James Teng
发明人： Marcella C. Stubits , James Teng
IPC分类号： A23G4/00 , A23G4/06 , A23G4/10 , C08B31/16
CPC分类号： A23G4/06 , A23G4/10 , C08B31/16
摘要： This application involves a process of making chewing gum base which is basically hydroxypropyl starch acetate. This process involves preparation of the hydroxypropyl starch acetate gum and separation and purification of the gum from an emulsion state.
摘要翻译：本申请涉及制造基本上是羟丙基淀粉乙酸酯的口香糖胶基的方法。该方法包括制备羟丙基淀粉乙酸酯胶，并从乳液状态分离和纯化胶。

8. 发明申请

US20100257152A1 ENHANCED IDENTIFICATION OF RELEVANT DATABASE INDICES 有权
标题翻译：增强相关数据库指标的识别
公开(公告)号：US20100257152A1
公开(公告)日：2010-10-07
申请号：US12418146
申请日：2009-04-03
申请人： Namik Hrle , Johannes Schuetzner , James Teng
发明人： Namik Hrle , Johannes Schuetzner , James Teng
IPC分类号： G06F7/00
CPC分类号： G06F17/30442 , G06F17/30336
摘要： According to one embodiment of the present invention, a method for identifying relevant database indexes is provided. According to one embodiment of the present invention, a method includes determining the importance of a particular database transaction and storing an index name related to the transaction along with an indicator of the importance. A database transaction is initiated and the importance indicator is received in an index advisor. The index advisor then makes an index recommendation based on the index importance.
摘要翻译：根据本发明的一个实施例，提供了一种用于识别相关数据库索引的方法。根据本发明的一个实施例，一种方法包括确定特定数据库事务的重要性并存储与事务相关的索引名称以及重要性的指标。启动数据库事务，并在索引顾问中接收重要性指标。然后，指数顾问根据指标的重要性提出指数推荐。

9. 发明授权

US07693875B2 Method for searching a data page for inserting a data record 失效
标题翻译：用于搜索数据页以插入数据记录的方法
公开(公告)号：US07693875B2
公开(公告)日：2010-04-06
申请号：US11620187
申请日：2007-01-05
申请人： Namik Hrle , Johannes Schuetzner , James Teng
发明人： Namik Hrle , Johannes Schuetzner , James Teng
IPC分类号： G06F12/00 , G06F17/30 , G06F9/26 , G06F9/34
CPC分类号： G06F17/30598 , G06F17/30492
摘要： A method of searching a data page in a table space of a database for inserting a data record to a first table, wherein the table space comprises space map pages and sets of data pages, wherein each space map page comprises information about the available storage space of one set of data pages, wherein each space map page and the corresponding set of data pages is further assigned to a table range for each table to which at least one data page in the set of data pages belongs to, wherein the database further comprises a clustering index for the first table in the database management system, wherein the database management system comprises a space usage information database, and wherein the space usage information database holds space usage information for each table range.
摘要翻译：一种在数据库的表空间中搜索用于将数据记录插入到第一表的数据页的方法，其中所述表空间包括空间图页和数据页组，其中每个空间图页包括关于可用存储空间的信息一组数据页面，其中每个空间地图页面和对应的数据页面集合进一步分配给数据页组中的至少一个数据页面所属的每个表的表范围，其中数据库还包括数据库管理系统中的第一表的聚类索引，其中所述数据库管理系统包括空间使用信息数据库，并且其中所述空间使用信息数据库保存每个表范围的空间使用信息。

10. 发明授权

US07317355B2 Over-current detection for a power field-effect transistor (FET) 有权
标题翻译：功率场效应晶体管（FET）的过电流检测
公开(公告)号：US07317355B2
公开(公告)日：2008-01-08
申请号：US11125968
申请日：2005-05-10
申请人： Shifeng Zhao , Cetin Kaya , James Teng , Claus Neesgaard , Lieyi Fang , Jeff Berwick
发明人： Shifeng Zhao , Cetin Kaya , James Teng , Claus Neesgaard , Lieyi Fang , Jeff Berwick
IPC分类号： H03F3/217
CPC分类号： H03K17/0822 , H03K17/162
摘要： A system and method is provided for detecting an over-current condition in a power field-effect transistor (FET). In one embodiment, an over-current detection circuit for detecting an over-current condition in a power FET comprises a current generator circuit operative to generate a reference current and a plurality of matched FETs operative to receive the reference current and provide a reference voltage, the matched FETs being matched to each other and to the power FET. The over-current detection circuit also comprises a comparator operative to measure a drain-to-source voltage of the power FET and to provide an output that indicates that the drain-to-source voltage of the power FET has exceeded the reference voltage.
摘要翻译：提供了用于检测功率场效应晶体管（FET）中的过电流状态的系统和方法。在一个实施例中，用于检测功率FET中的过电流状态的过电流检测电路包括用于产生参考电流的电流发生器电路和用于接收参考电流并提供参考电压的多个匹配FET，匹配的FET彼此匹配并连接到功率FET。过电流检测电路还包括比较器，用于测量功率FET的漏极 - 源极电压，并提供指示功率FET的漏极 - 源极电压已经超过参考电压的输出。

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