Patents by Inventor Hisamitsu Kawaguchi

Hisamitsu Kawaguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6745202
    Abstract: A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data included in already-analyzed-text data of each text to be cataloged, and context identifie
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: June 1, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Toru Takahashi, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Patent number: 6724477
    Abstract: An inspection method that enables efficient inspection operations before the shipment of a sheet lens product. A sheet-like Fresnel lens sheet having a masking material bonded on its light-incidence surface is placed on an operation surface equipped with a black color system of background with the light-incidence surface up. On the operation surface the masking material is exfoliated. At the same time the Fresnel lens sheet is inspected by the reflected light to thereby make an inspection of the presence or absence of a white color system of defects. Thereafter, the Fresnel lens sheet is inspected by a the transmission light.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: April 20, 2004
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Masatoshi Kitamura, Hisamitsu Kawaguchi
  • Publication number: 20030078920
    Abstract: A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data included in already-analyzed-text data of each text to be cataloged, and context identifie
    Type: Application
    Filed: November 26, 2002
    Publication date: April 24, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Toru Takahashi, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Patent number: 6535875
    Abstract: A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data included in already-analyzed-text data of each text to be cataloged, and context identifie
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: March 18, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Toru Takahashi, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Patent number: 6510425
    Abstract: A document search method and apparatus and a portable medium used therefor are described, in which when registering a document in a data base, the logic structures of each document to be registered are superposed one on another to generate a structure index in which the structure elements having the same position of occurrence in the document are represented by a single meta-node. At the time of document search, a mass of the meta-nodes meeting a specified structural condition is determined with reference to the structure index. A string index is searched with the meta-node identifiers as a key thereby to determine a mass of documents meeting the specified condition. As a result, a highly accurate structure-specified search is made possible on a document data base including a mass of structured documents.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: January 21, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Takuya Okamoto, Toru Takahashi, Hisamitsu Kawaguchi, Katsumi Tada, Noriyuki Yamasaki
  • Patent number: 6434551
    Abstract: A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data included in already-analyzed-text data of each text to be cataloged, and context identifie
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: August 13, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Toru Takahashi, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Publication number: 20020095409
    Abstract: A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data included in already-analyzed-text data of each text to be cataloged, and context identifie
    Type: Application
    Filed: March 13, 2002
    Publication date: July 18, 2002
    Applicant: Hitachi Ltd.
    Inventors: Toru Takahashi, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Publication number: 20020095410
    Abstract: A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data included in already-analyzed-text data of each text to be cataloged, and context identifie
    Type: Application
    Filed: March 13, 2002
    Publication date: July 18, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Toru Takahashi, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Publication number: 20020077989
    Abstract: Digital contents are distributed from a center side distribution apparatus to a terminal apparatus via a shop side distribution apparatus, an audiovisual fee for digital contents with limited time is collected from a user, all digital contents capable of being accessed only at a limited place are allowed to be viewed and listened during a limited time period, the number of audiovisual times of digital contents viewed and listened at the terminal apparatus is managed, the numbers of audiovisual times of digital contents are totaled, and a copyright fee is calculated in accordance with the totalized number of audiovisual times. It is therefore possible to reliably collect a copyright fee even in the shop such as a manga tea shop and a compound cafe at which the copyright fee was not able to be collected to date. It is also possible to strictly manage viewing and listening digital contents.
    Type: Application
    Filed: August 8, 2001
    Publication date: June 20, 2002
    Inventors: Nobuya Okayama, Hiroya Onimaru, Masayuki Orimo, Jun?apos; ichi Kinoshita, Hisamitsu Kawaguchi, Tatsuro Arai, Hiroshi Koike
  • Publication number: 20020063862
    Abstract: Provided is an inspection method that enables highly efficient inspection operations that are necessary before the shipment of a sheet lens product. A sheet-like Fresnel lens sheet having bonded on its light-incidence surface a masking material is placed on an operation surface equipped with a black color system of background with that light-incidence surface up. On the operation surface the masking material is exfoliated. Along with this, the Fresnel lens sheet is inspected based on the reflected light to thereby make an inspection of the presence or absence of a white color system of defects. Thereafter, the Fresnel lens sheet is inspected based on the transmission light.
    Type: Application
    Filed: October 24, 2001
    Publication date: May 30, 2002
    Inventors: Masatoshi Kitamura, Hisamitsu Kawaguchi
  • Patent number: 6389413
    Abstract: A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data included in already-analyzed-text data of each text to be cataloged, and context identifie
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: May 14, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Toru Takahashi, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Patent number: 6377946
    Abstract: A document search method and apparatus and a portable medium used therefor are described, in which when registering a document in a data base, the logic structures of each document to be registered are superposed one on another to generate a structure index in which the structure elements having the same position of occurrence in the document are represented by a single meta-node. At the time of document search, a mass of the meta-nodes meeting a specified structural condition is determined with reference to the structure index. A string index is searched with the meta-node identifiers as a key thereby to determine a mass of documents meeting the specified condition. As a result, a highly accurate structure-specified search is made possible on a document data base including a mass of structured documents.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: April 23, 2002
    Assignee: Hitachi LTD
    Inventors: Takuya Okamoto, Toru Takahashi, Hisamitsu Kawaguchi, Katsumi Tada, Noriyuki Yamasaki
  • Publication number: 20010011271
    Abstract: A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data included in already-analyzed-text data of each text to be cataloged, and context identifie
    Type: Application
    Filed: March 15, 2001
    Publication date: August 2, 2001
    Applicant: Hitachi, Ltd.
    Inventors: Toru Takahashi, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Patent number: 6226632
    Abstract: A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data included in already-analyzed-text data of each text to be cataloged, and context identifie
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: May 1, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Toru Takahashi, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Patent number: 6105022
    Abstract: A text cataloging method includes a step of cataloging already-analyzed-text data obtained from an analysis of a logical structure of a text to be cataloged in a text database, a step of creating a structure index by sequentially superposing logical structures of texts to be cataloged, wherein a single metaelement is used for representing a group of elements in the texts having the same position of appearance in one of the texts and the same element type, a single piece of meta-character-string data is used for representing a group of pieces of character-string data in the texts having the same position of appearance in one of the texts, and a context identifier is assigned to each metanode composing a tree-like structure of the structure index for uniquely identifying the metanode; a step of generating structured-full-text data composed of definitions of associative relations between all pieces of character-string data-included in already-analyzed-text data of each text to be cataloged, and context identifie
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: August 15, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Toru Takahashi, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Patent number: 6094647
    Abstract: A method for making document information searches. In performing a document search with respect to the desired key word, two stages of presearch are carried out. In a first stage of presearch, a character component table in which an existence of character codes for every document is stated with respect to all the character codes contained in the group of document text data of stored documents is generated, and the character component table is searched for all the character strings constituting a desiredly designated search subject key word to thereby extract all the documents each containing all the character codes constituting the search subject key word. In a second stage of presearch, contracted text data for every document in which adjuncts and duplication of repeatedly stated words contained in advance in the text data are eliminated is generated, and the documents each containing the search subject key words by word are extracted from the documents extracted by the first presearch.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: July 25, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Kanji Kato, Hiromichi Fujisawa, Mitsuo Ooyama, Hisamitsu Kawaguchi, Atsushi Hatakeyama, Noriyuki Kaneoka, Mitsuru Akizawa, Masaaki Fujinawa, Hidefumi Masuzaki, Masaharu Murakami
  • Patent number: 5970485
    Abstract: A method of fast clipping, despite of large number of users, can be achieved through analyzing query expressions, storing the number of query terms included in the query expressions in a term number count table, generating a finite automaton for matching the terms occurring in text data with all terms included in the query expressions, generating a user identifier table for storing the identifiers of users in association with the terms included in the query expressions, matching the terms by scanning the text data by the finite automaton, calculating for each user the occurrence count of terms occurring in the text data as substrings coincident with the terms included in the query expressions made to the user identifier table, storing the calculated occurrence count in the term occurrence count region of the table, comparing the calculated term occurrence count of the table with the number of terms included the query expressions, and when a match is found from the comparison, delivering the text data to the u
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: October 19, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Natsuko Sugaya, Hisamitsu Kawaguchi, Noriyuki Yamasaki
  • Patent number: 5757983
    Abstract: A document retrieval method and system for retrieving, from a document database storing document data in the form of character codes, a document which contains given search terms and which meets a given search query condition. From documents loaded from the document database, a document containing terms which match the search terms is searched to generate document identification (ID) information including a document identifier of the searched document and containing match terms found to match with the search terms as well as term identifiers of the match terms and position information of the match terms in the searched document. A decision is then made as to whether or not the position information of the match terms satisfies a positional condition specified in the search query condition concerning a positional relation between the search terms, and match information is then generated indicating satisfaction of the search query condition when the positional condition is satisfied.
    Type: Grant
    Filed: August 21, 1995
    Date of Patent: May 26, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Hisamitsu Kawaguchi, Mitsuru Akizawa, Kanji Kato, Atsushi Hatakeyama, Hiromichi Fujisawa
  • Patent number: 5748953
    Abstract: A neighboring plural-character occurrence bitmap of a practical capacity capable of eliminating noises by hashing is realized, and a high speed full text search is realized equivalently, by greatly reducing the number of documents to be searched even if a search term constituted by a combination of English characters and words is used. Text data is segmented into words, and n-character strings at every (m+l)-th character positions are extracted from each word. A neighboring plural-character occurrence bitmap is created which stores data representing a presence of each neighboring plural-character string at a certain entry thereof. N-character strings at every (m+l)-th character positions are extracted from a search term and the neighboring plural-character occurrence bitmap is searched by using a search control program.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: May 5, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Natsuko Mizutani, Atsushi Hatakeyama, Hisamitsu Kawaguchi, Katsumi Tada, Kanji Kato, Satoshi Asakawa
  • Patent number: 5745745
    Abstract: A text search method for structured documents and apparatus wherein structured document database to be searched is created by adding logical structure length information to logical structure discriminating information on the basis of a structured document constituted by a plurality of logical structures and logical structure discriminator information, and in searching the structured document database in accordance with an entered search key constituted by a logical structure and a search character string, the search of a logical structure other than the entered logical structure is skipped based upon the data length information.
    Type: Grant
    Filed: June 27, 1995
    Date of Patent: April 28, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Katsumi Tada, Atsushi Hatakeyama, Hisamitsu Kawaguchi, Natsuko Mizutani, Kanji Kato, Satoshi Asakawa