Kabushiki Kaisha Toshiba

Toshiba Solutions Corporation

Yosuke Kuroda

Masakazu Hattori

Shinichi Kanno

Toshio Shirakihara

Takuya Kanawa

Minoru Inata

A sensor data management apparatus according to an embodiment stores pieces of sensor data in data areas provided corresponding to prescribed data units and manages the pieces of sensor data. The pieces of sensor data have been input from a plurality of sensors. The sensor data management apparatus includes a group determining unit and a data storing unit. The group determining unit is configured to analyze the pieces of stored sensor data and determine groups of sensors based on a result of the analysis. The data storing unit is configured to determine a storage location of a newly input piece of sensor data to store pieces of sensor data from sensors belonging to the same one of the groups in the same one of the data areas, and store the piece of sensor data at the storage location.

Sensor data management apparatus, sensor data management method, and computer program product

According to an embodiment, a structured document management device includes a query data receiving unit; a structural condition dividing unit; a structural condition rewriting unit; and a query execution unit. The query data receiving unit is configured to receive query data for searching a structured document. The structural condition dividing unit is configured to divide the query data into elements including a structural condition. The structural condition rewriting unit is configured to rewrite the structural condition into a rewritten query when a type of the structural condition is other than a descendant structural condition. The rewritten query is predetermined to include a joining process with a descendant structural condition so as not to affect structural conditions appearing before and after the structural condition. The query execution unit is configured to output a search result in response to query data that includes the structural condition and the rewritten query.

Device and method for managing structured document, and computer program product

According to an embodiment, a structured document management device includes a parser; a constraint acquiring unit; and a parse tree rewriting unit. The structured document receiving unit is configured to receive an input of a structured document having a layered logical structure. The parser is configured to parse the syntax of received query data to acquire a parse tree in which the query data is decomposed so as to meet a static single assignment form which is defined such that each variable is assigned exactly once. The constraint acquiring unit is configured to acquire a hierarchical condition that the variables of the parse tree need to meet and constraints that include conditions for values of the respective variables. The parse tree rewriting unit is configured to rewrite the query data in such a form that the structured document is refinable by the constraints.

A memory controller controls a semiconductor storage device including nonvolatile memory cells. The controller includes a generating circuit, and a selection circuit. The generating circuit generates first data based on a second data. The selection circuit retains a cumulative value whose each digit is a cumulative result in each bit of data which is already written in the memory cells. The selection circuit selects one of the first data. A selected first data has a better average of digits in a sum of each bit of the selected first data and each digit of the cumulative value than an unselected first data. The selection circuit retains the sum concerning the selected first data as the new cumulative value.

Memory controller controlling semiconductor storage device and semiconductor device

a structured data storage apparatus inputs a given number of structured data items each including respective hierarchical structures of element data items, stores structured data items in first memory, extracts common hierarchical structure of first group of element data items, which is included in and common to structured data items, from the structured data items, based on frequencies of occurrence of first group in structured data items, inputs structured data item to be stored, which includes common hierarchical structure of first group, assigns element IDs corresponding to respective element data items of first group to storage areas allocated to respective element data items of first group in memory location of first memory, the memory location being allocated to structured data item to be stored, stores first group included in structured data item to be stored in respective storage areas in memory location.

Growing community of inventors

Kawasaki, Japan

Yosuke Kuroda