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| Number | Title | Issue Date |
| 7562154 | System and method for filtering stale messages resulting from membership changes in a distributed computing environment A cluster computer system capable of filtering stale messages resulting from changes in a cluster membership. The system has interconnected nodes each hosting one or more applications and having a node filter for filtering messages to and from other nodes based on a... | 07/14/2009 |
| 7120759 | Storage system and method for prestaging data in a cache for improved performance A storage system and method for prestaging data in a cache based on relative changes in the frequency of data access and relative changes in the effectiveness of previous prestage operations. The relative changes in the frequency of data access are determined by sto... | 10/10/2006 |
| 7107403 | System and method for dynamically allocating cache space among different workload classes that can have different quality of service (QoS) requirements where the system and method may maintain a history of recently evicted pages for each class and may determine a future cache size for the class based on the history and the QoS requirements A method and system for dynamically allocating cache space in a storage system among multiple workload classes each having a unique set of quality-of-service (QoS) requirements. The invention dynamically adapts the space allocated to each class depending upon the ob... | 09/12/2006 |
| 7038553 | Scalable computer system having surface-mounted capacitive couplers for intercommunication A scalable and compact computer system of three-dimensional subsystems each having capacitive couplers on its external surfaces for transmitting and receiving electrical signals to and from adjacent subsystems. Each surface having an electrically non-conducting subs... | 05/02/2006 |
| 7010645 | System and method for sequentially staging received data to a write cache in advance of storing the received data The invention provides a method and system for staging write data to improve a storage system's performance. The method includes providing a write cache on the medium. The write cache includes a plurality of cache lines. Each of the cache lines includes a plurality ... | 03/07/2006 |
| 6963959 | Storage system and method for reorganizing data to improve prefetch effectiveness and reduce seek distance A data storage system and method for reorganizing data to improve the effectiveness of data prefetching and reduce the data seek distance. A data reorganization region is allocated in which data is reorganized to service future requests for data. Sequences of data u... | 11/08/2005 |
| 6952758 | Method and system for providing consistent data modification information to clients in a storage system A data storage system and method for providing consistent data to multiple clients based on data modification information as existing data is updated and new data is written to the system. The information indicates the modification status of each data block and iden... | 10/04/2005 |
| 6886129 | Method and system for trawling the World-wide Web to identify implicitly-defined communities of web pages A method and system for identifying groups of pages of common interest from a collection of hyper-linked pages are disclosed. A plurality of community cores are identified from the collection where each core includes first and second sets of pages, and each page in ... | 04/26/2005 |
| 6622161 | Information transfer applications The present invention relates to a means, system and method for controlling the storage space required by a storage means which contains information items associated with an information transfer application. The information transfer application is typical... | 09/16/2003 |
| 6446234 | Method and apparatus for updating cyclic redundancy check information for data storage A method and apparatus for ensuring the integrity of data that can detect errors that remain when the data correction scheme fails to correct at least some of the errors, or has added additional errors. Reed-Solomon check symbols are used for error correc... | 09/03/2002 |
| 6324533 | Integrated database and data-mining system A method and apparatus for mining data relationships from an integrated database and data-mining system are disclosed. A set of frequent 1-itemsets is generated using a group-by query on data transactions. From these frequent 1-itemsets and the transactio... | 11/27/2001 |
| 6201653 | By-pass write drivers for high-performance data recording A magnetic-head write-driver circuit includes a write-driver circuit and a by-pass driver circuit coupled in parallel to a signal path between the input and the output of the magnetic-head write-driver circuit. The write-driver circuit receives an input s... | 03/13/2001 |
| 6199072 | Method for creating archives on removable mass storage media and archive server A method for creating archives on removable mass storage media, comprising steps of: digitizing data to be archived into digitized archives; extracting record information representing details about the archives; storing the record information in archive d... | 03/06/2001 |
| 6173292 | Data recovery in a transactional database using write-ahead logging and file caching A method, apparatus, and article of manufacture for providing transaction control for a computer-implemented database management system. The database management system manages one or more databases, wherein each of the databases contains one or more docum... | 01/09/2001 |
| 6148295 | Method for computing near neighbors of a query point in a database A method for determining k nearest-neighbors to a query point in a database in which an ordering is defined for a data set P of a database, the ordering being based on l one-dimensional codes C1, . . . , C1. A single relation R is cr... | 11/14/2000 |
| 6138115 | Method and system for generating a decision-tree classifier in parallel in a multi-processor system A method and system are disclosed for generating a decision-tree classifier in parallel in a multi-processor system, from a training set of records. The method comprises the steps of: partitioning the records among the processors, each processor generatin... | 10/24/2000 |
| 6125005 | Altitude insensitive air bearing using pitch compensation for data storage application An air bearing slider for supporting a magnetic read/write head on a moving disk includes at least one front force carrying pad located in front of a suspension pivot point of an air bearing slider, at least one rear force-carrying pad located behind the ... | 09/26/2000 |
| 6112202 | Method and system for identifying authoritative information resources in an environment with content-based links between information resources A system and method are provided for searching for desired items from a network of information resources. In particular, the system and method have advantageous applicability to searching for World Wide Web pages having desired content. An initial set of ... | 08/29/2000 |
| 6101056 | Electronic magnetoresistive voltage biasing using a circuit and current mirrors A magnetoresistive transducer biasing technique that provides a uniform transducer biasing in a product. The technique provides biasing for transducer constant power dissipation, constant sensor current density biasing, constant sensor bias voltage, const... | 08/08/2000 |
| 6094651 | Discovery-driven exploration of OLAP data cubes A method for locating data anomalies in a k dimensional data cube that includes the steps of associating a surprise value with each cell of a data cube, and indicating a data anomaly when the surprise value associated with a cell exceeds a predetermined e... | 07/25/2000 |
| 6089749 | Byte synchronization system and method using an error correcting code A byte synchronization detection system and method in which a vector subtractor circuit determines an error vector between a current read data pattern and a synchronization bit pattern, and an offset adder circuit determines a Hamming Distance of the next... | 07/18/2000 |
| 6029230 | Data storage library with media destaging and prestaging for improved response time A method for improving the response time of a data storage library of removable media is disclosed. The library includes a media storage rack with multiple slots for storing data media, a storage drive for writing data to or reading data from one of the m... | 02/22/2000 |
| 6014281 | Using a read element and a read/write coupling path to detect write-safe conditions A circuit and method for detecting write-safe conditions for a magnetic storage device The circuit includes an electrical interconnect, a write-safe circuit, a write-driver circuit, a read amplifier and a read/write element. The electrical interconnect ha... | 01/11/2000 |
| 5995334 | Rotary electrostatic microactuator with area-efficient comb electrode arrangement A rotary microactuator that includes a stationary structure formed on a substrate and a movable structure attached to the stationary structure by a flexure. The stationary structure has at least one branch, with each branch of the stationary structure hav... | 11/30/1999 |
| 5991752 | Method and apparatus for deriving association rules from data and for segmenting rectilinear regions The present application discloses a method and apparatus for extracting association rules from data having two or more numeric attributes and a true-false attribute, and for presenting the rules in an easily understandable form. The method comprises the s... | 11/23/1999 |
| 5991825 | System for handling missed revolution in a disk drive by aborting the execution of primary command and executing secondary command if a missed revolution occurs A method and disk controller for handling missed revolutions in a disk drive having a rotating data media are disclosed. The method is based on a Rotational Positioning Optimization (RPO) algorithm and comprises the steps of: selecting a primary and a sec... | 11/23/1999 |
| 5986839 | Electronic magnetoresistive sensor biasing using a transducer equivalent circuit and current sources A magnetoresistive transducer biasing technique that provides a uniform transducer biasing in a product. The technique provides biasing for transducer constant power dissipation, constant sensor current density biasing, constant sensor bias voltage, const... | 11/16/1999 |
| 5982585 | Rotary electrostatic microactuator with optimum flexure arrangement A rotary microactuator includes a movable structure having a center of rotation about which the movable structure rotates, a stationary structure formed on a substrate, and a flexure member attaching the movable structure to the attachment structure of th... | 11/09/1999 |
| 5983222 | Method and apparatus for computing association rules for data mining in large database A method is disclosed for computing an association rule in a database having numerical attributes and 0-1 attributes. First, a numerical attribute is divided into a plurality of intervals (or buckets), and each data set is placed into a single bucket acco... | 11/09/1999 |
| 5978794 | Method and system for performing spatial similarity joins on high-dimensional points A method and system are disclosed for performing spatial similarity joins on high-dimensional points that represent data objects of a database. The method comprises the steps of: generating a data structure based on the similarity distance &3xb5; for orga... | 11/02/1999 |
| 5959808 | Shielded electrostatic microactuators for magnetic-head positioning such devices A rotary microactuator includes a plurality of stationary electrodes formed on a substrate, an electrically conducting bottom layer formed on the substrate that is electrically isolated from the stationary electrodes, a plurality of movable electrode, and... | 09/28/1999 |
| 5960185 | Method and apparatus for wafer disposition based on systematic error modeling A wafer-disposition method and apparatus are disclosed where the disposition is based on a model of systematic misalignment errors. The method comprises the steps of: modeling the misalignment errors between the mask and wafer as a mathematical model usin... | 09/28/1999 |
| 5953173 | High CMRR and sensor-disk short-circuit protection device for dual element magnetoresistive heads A magnetoresistive transducer biasing technique that provides high common mode rejection ratio (CMRR) for a dual MR sensor head, while providing for short-circuit protection of the sensor elements within the head for short-circuits between the head and a ... | 09/14/1999 |
| 5936466 | Differential operational transconductance amplifier A low-power dual-gm differential operational transconductance amplifier (OTA) having a differential input for improved common-mode noise rejection, a high transconductance for power savings, and circuitry for controlling its output conductance.... | 08/10/1999 |
| 5931947 | Secure array of remotely encrypted storage devices A network storage device is disclosed for use in a secure array of such devices to support a distributed file system. Each device is an independent repository of remotely encrypted data objects to be accessed by authorized network clients. All encryption ... | 08/03/1999 |
| 5926820 | Method and system for performing range max/min queries on a data cube A method for performing a range max/min query in a database, in which the data is represented as a multi-dimensional data cube, is disclosed. The method comprises the steps of: partitioning the data cube into multi-level multi-dimensional blocks which are... | 07/20/1999 |
| 5923831 | Method for coordinating membership with asymmetric safety in a distributed system A method is disclosed for coordinating membership subject to an asymmetric safety condition from multiple processes in a distributed system. Each is callable by a distributed application for system status or for executing tasks of the application. Initial... | 07/13/1999 |
| 5890151 | Method and system for performing partial-sum queries on a data cube Disclosed is a method and system for performing a partial-sum query in a database in which the data is represented as a multi-dimensional data cube. The data cube is partitioned into multi-dimensional blocks. One or more covering codes are then selected f... | 03/30/1999 |
| 5884320 | Method and system for performing proximity joins on high-dimensional data points in parallel A method and system for performing spatial proximity joins on high-dimensional points representing data objects of a database in parallel in a multiprocessor system. The method comprises the steps of: partitioning the data points among the processors; cre... | 03/16/1999 |
| 5877718 | Differential analog-to-digital converter with low power consumption An analog-to-digital (A/D) converter capable of receiving a differential input for improved noise rejection and having two static resistive ladders for reducing power consumption. The resistive ladders are anti-parallel and have a high impedance, each div... | 03/02/1999 |
