Matsushita Electric Industrial Co., Ltd.

Takamasa Oyama

Chuichi Kikuchi

Tetsuya Kinoshita

Masao Kato

Michio Miwa

Tomoko Fujita

Hirobumi Shinoki

Hironobu Suzuki

Toru Kawaguchi

Yasuyo Shirasaki

Osamu Katayama

Noriyuki Enomoto

All two-character chains including two general characters and all three-character chains including one special character between two general characters are detected from a registration character string in which a large number of special characters not having any meaning are frequently arranged, or all two-character chains including two general or symbolic characters are detected from a converted registration character string produced by changing each special character of the registration character string to one type of symbolic character determined in correspondence to one general character adjacent to the special character. Also, occurrence frequencies of the general or symbolic characters of each chain are counted and stored in a recording medium with the registration character chains. When a retrieval character chain is input, occurrence frequencies of particular character chains corresponding to all retrieval character chains detected from the retrieval character string in the same manner are read out from the recording medium and are collated with each other, and a particular character string agreeing with the retrieval character chain is retrieved from the registration character string. Because an occurrence frequency of any special character is not counted or the special characters are changed to various types of symbolic characters, a recording area required for the occurrence frequencies of the registration character chains can be reduced.

Recording medium and character string collating apparatus for full-text character data

A data searching apparatus is disclosed which comprises: a request receiving portion for receiving a searching request including searching data and a registering request; a record number providing portion responsive to the registering request for providing record number data to each record which is a unit of data to be registered; a relatively-numbering portion for grouping the record number data into groups and converting the record number data into group number data and relative record number data within each of the groups; an index file generation portion for generating an index file from the data and the relative record number data; an index file storing portion for storing the index file; an index file searching portion for searching one of records indicated by the searching data in accordance with the index file in the index file storing portion in response to the searching request from the request receiving portion; an absolutely-numbering portion for converting the relative number data and group number data of the searched one of record into the record number data; and a searching result outputting portion for outputting a searching result in accordance with the record number data from the absolutely-numbering portion.

Data searching apparatus

A division code is added to both ends of a group of pieces of data registered in an item of a data record L and between each pair of adjacent data, so that a piece of code-added data is produced. Thereafter, a character chain pattern (C1,C2) of each pair of adjacent characters C1 and C2 in the code-added data is prepared, an occurrence frequency Fi of each character Ci in each piece of data H is calculated, and character chain information (F1,F2,H,L) corresponding to each character chain pattern (C1,C2) is prepared. Therefore, a index file in which pieces of character chain information prepared for the same item of a plurality of data records are listed is prepared. When a keyword is input by a user, the division code is added to both ends of the keyword to produce a code-added keyword, and a series of keyword character chain patterns is prepared from the code-added keyword in the same manner. Thereafter, a series of particular character chain information (F1,F2,H,L) corresponding to the series of keyword character chain patterns on condition that F2 of first information equals to F1 of second information following the first information and data numbers H and record numbers L are respectively the same value. Therefore, a particular data record L in which a piece of particular data H including the keyword is registered can be quickly retrieved.

Information retrieval system for retrieving a record of data including a

A plurality of characters arranged in a text are numbered in order of occurrence for each character type, and an occurrence number table in which one or more occurrence numbers are listed for each character type is prepared in an occurrence number preparing unit. Also, a set of two character types is defined as a character pattern, and a set of two occurrence numbers of two adjacent characters of which types correspond to one character pattern is defined as an occurrence number pattern. One or more occurrence number patterns respectively corresponding to one character pattern are arranged for each character pattern, and a list of occurrence number patterns is prepared as an index file in an index file preparing unit. Thereafter, a series of specified character patterns indicated by a key word is prepared, and a series of particular occurrence number patterns corresponding to the series of specified character patterns is selected on condition that a series of particular characters indicated by the series of particular occurrence number patterns agrees with the particular character stream. Therefore, because the characters of the text is converted to the occurrence number patterns and all occurrence number patterns are not searched, a searching operation can be performed at a high speed.

Information searching apparatus for searching text to retrieve character

An apparatus for measuring a figure distance between first and second points of a solid figure with a measuring device having first and second panels and an axis connecting the panels is provided with a measuring device data storing section for storing attribute data and constitutional data of the measuring device, a solid figure data storing section for storing solid figure data, and a display section for displaying the measuring device and the solid figure according to the data stored in the storing sections, a moving section for positioning the first and second panels at the first and second points according to a motion mode, and a renewing section for renewing the data according to an editing mode. In the moving section, the axis is extended or shortened, translation movement is performed for the measuring device, and/or the panels is deformed in a stick shape according to the motion mode. In the renewing section, the measuring device is rotated or jointed to a second measuring device, one of the panels is overlapped with a surface or an edge of the solid figure, and/or the axis is curved to measure a curved outline length of the solid figure according to the editing mode.

Method and apparatus for measuring a distance of a route in a solid

There is disclosed an evaluating apparatus for evaluating a manipulation performance of a commodity with operating parts. Three dimensional position and orientation of a first body like an operator's fingertip is detected to virtually display the first body. Also, configuration and functions of operating parts planned to be attached to a commodity are set, and three dimensional position and orientation of a second body like a commodity model having the same external shape as that of the commodity is detected to virtually display the commodity with the operating parts. When a planned area of the second body is manipulated by the first body, a contact of the second body with the first body is detected, and an operating part Po placed at a position corresponding to the planned area is detected. Thereafter, the operating part Po of which an external shape is virtually changed by the manipulation of the first body is displayed according to the configuration and function of the operating part Po. Accordingly, an operator can actually feel a state that the external shape of the commodity is changed when the operator virtually manipulates the commodity, without making the commodity on an experimental basis.

Growing community of inventors

Kamakura, Japan

Takamasa Oyama