Patents by Inventor Hiromichi Fujisawa

Hiromichi Fujisawa 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: 6182062
    Abstract: A multi-lingual information retrieval system which includes an information storage section for storing information, a data storage section for storing data for language conversion and for converting the stored information to strings of characters in natural language expressions in order to enable a person's interpretation, an interface section for user's interaction operations for information retrieval, a retrieval section for retrieving information from the information storage section in response to a request for a retrieval from the interface section, and an output section for outputting a retrieved result of the retrieval section. The data storage section coexistently stores the information therein in a plurality of different languages, thereby making possible to retrieve identical information by use of the plurality of different languages.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: January 30, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Hiromichi Fujisawa, David Cohn, Atsushi Hatakeyama, Itsuko Kiuchi
  • Patent number: 6181778
    Abstract: A sign language telephone device is offered which enables an aurally handicapped person who uses the sign language to converse with a normal person at a distant place who does not know the sign language. The sign language telephone device is placed on the side of the aurally handicapped person, and hand gestures of the sign language inputted from a sign language input means are recognized as the sign language, and the recognized sign language is translated to Japanese. The translated Japanese word train is converted to synthesized voices and it is transmitted to a videophone on the side of a normal person. The voices from the videophone are recognized, and the recognized Japanese is translated to the sign language to generate sign language animations and they are displayed on the screen of a TV set on the side of the aurally handicapped person.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: January 30, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Masaru Ohki, Hirohiko Sagawa, Tomoko Sakiyama, Hisashi Ikeda, Hiromichi Fujisawa, Nobuo Hataoka, Youichi Kaneko
  • 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: 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: 5696916
    Abstract: An information storage and retrieval system which permits storage of fact information represented in terms of conceptual concepts expressing things and relational concepts expressing relations therebetween on a knowledge base, easy inputting and correction of the fact information, easy browsing and retrieval of the fact information and display of the fact information with effective use of a limited view area, and also to provide a display method used in the information storage and retrieval system.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: December 9, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Naoko Yamazaki, Itsuko Kiuchi, Hiromichi Fujisawa, Tetsuya Hashimoto
  • Patent number: 5628003
    Abstract: A document storage and retrieval system is provided with means for storing a document body in the form of image, means for storing text information in the form of a character code string for retrieval, means for executing a retrieval with reference to the text information, and means for displaying a document image relating thereto on a retrieval terminal according to the retrieval result. Such a form of the system is available for retrieving the full contents of a document and also for displaying the document body printed in a format easy to read straight in the form of image. Accordingly, users are capable of retrieving documents with arbitrary words and also capable of reading even such a document as is complicated to include mathematical expressions and charts through a terminal in the form of image, the same as on paper. Further, the invention provides a system wherein the text information for retrieval is extracted automatically from the document image through character recognition.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: May 6, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Hiromichi Fujisawa, Atsushi Hatakeyama, Yasuaki Nakano, Junichi Higashino, Toshihiro Hananoi
  • Patent number: 5576849
    Abstract: Monochrome multi-color, and full-color documents are automatically discriminated from each other, and character and photograph regions are also determined in an automatic manner, thereby producing appropriate binary image data according to the operation results. An image data transformation apparatus includes a binarizing section for converting image data inputted thereto into binary image data associated with a plurality of different colors, binary image data buffers for temporarily storing therein the binary image data, a decision section for deciding based on the input image data whether the monochrome, color, or multi-color output is to be produced and whether an intermediate-tone or particular color pixel is to be processed, and a binary image data selection/output section for selecting as output therefrom binary image data according to the decision results.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: November 19, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Murakami, Eiichi Hadano, Kazuyuki Kodama, Hiromichi Fujisawa, Masaaki Fujinawa
  • Patent number: 5574881
    Abstract: A fast access high capacity data storage system and method are disclosed, the data storage system including a disk-based storage system employing a plurality of storage surfaces. Selected storage surfaces have a plurality of independently controlled data access heads in data communication therewith, and circuitry is provided for allowing concurrent data transfers through the plurality of data access heads. Performance is further improved by monitoring frequently accessed data records and transferring them to a copy recording surface or recording surfaces less frequently used, and by moving a data access head of the plurality of data access heads to other recording surfaces to decrease access bottlenecks. The storage system further includes circuitry for averaging at least one of record length data, transfer timing data, access timing data and address data.
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: November 12, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Yasuoka, Yoshito Tsunoda, Takeshi Maeda, Yoshihisa Kamo, Hiromichi Fujisawa, Zenji Tsutsumi, Shunichi Torii
  • Patent number: 5572699
    Abstract: A file system including an input/output unit for inputting data from and outputting data to an external system; a controller connected to the input/output unit for dividing the data into an optional number of parallel data; a management table for storing the number of divisions of the data; a head group for writing the divided parallel data into a storage medium at the same time; and a unit for reading the data from the storage medium while referring to information stored in management device.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: November 5, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Yoshihisa Kamo, Hajime Aoi, Hitoshi Kakuta, Yoshito Tsunoda, Hiromichi Fujisawa, Yosuke Seo, Yasuhide Ouchi
  • Patent number: 5555408
    Abstract: An information retrieval system with good human-interface methods to give the system ease-of-use having two distinctive features with the first being visual interface and the second being natural language interpretation. The visual interface provides for one is visual interaction for local search and natural language interpretation provides for linguistic interaction for global search. The visual interface provides versatile views onto the contents of the knowledge base that the system has, controlling mechanisms for browsing through the knowledge base, a capability of showing relevant information for the users, and a mechanism for editing a query expression that describes information to retrieve. By using the visual interface for information retrieval, the users can easily create query expressions, by consulting and reacting with the system. The natural language interpretation makes use of a conceptual network as a knowledge-base that stores important concepts and relationships among these concepts.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: September 10, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Hiromichi Fujisawa, David Cohn, Atsushi Hatakeyama, Itsuko Kiuchi
  • Patent number: 5553226
    Abstract: When a network representing the relationship among immense concepts is indicated using a multi-window function, a concept network display system simultaneously displays a superconcept for a current concept in the network, a network representing the subsumption relation of the current concept, and a network representing generic and instance relations of the current concept in a dynamically linked relationship. The concept network display system also edits the displays of the networks by rewriting displayed networks in response to selection of a new current concept, and displays a history of the current concepts without repetition.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: September 3, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Itsuko Kiuchi, Hiromichi Fujisawa, Atsushi Hatakeyama, Minoru Wakabayashi
  • Patent number: 5539843
    Abstract: An image processing system wherein for an inputted composite image composed of a line image and a dither image, both a line image processing and a dither image processing are carried out in parallel, and one of the processed results as selected in accordance with the image region discrimination result. The dither image processing is carried out through data conversion for calculating multivalued gray scale image from the inputted image data, gray scale data conversion for adjusting the gray scale image data so as to match an output device and obtaining such adjusted gray scale image data, and re-binarization for re-binarizing the gray scale image data after subjected to the gray scale conversion. The image region discrimination for discriminating if an image region is of a line image of a dither image is carried out based on a ratio of the number of black or white pixels within the region to the contour line length within the range.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: July 23, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Murakami, Masaaki Fujinawa, Hiromichi Fujisawa, Hidefumi Masuzaki, Yasuo Kurosu
  • Patent number: 5519857
    Abstract: A method and apparatus for performing a document information search to uncover specified text data containing a given search subject key word from a group of document text data stored in a memory. In the document information search method, two stages of presearch are carried out to perform the document search with respect to a desired subject key word. In a first stage of presearch, a character component table is generated in which the existence of character codes for every document is set forth with respect to all the character codes contained in the group of document text data of stored documents. The character component table is searched for all the character codes comprising a designated search subject key word to thereby extract all documents containing all the character codes comprising the search subject key word. Further, in the presearch step, all texts without the possibility of containing the search subject key word are eliminated.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: May 21, 1996
    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: 5471549
    Abstract: A document is scanned by an optical scanner to be converted into digital image data to be transmitted to an image memory. Characters are extracted from the digital image data one by one and features are extracted from each of the extracted characters. The features as standard patterns stored in a character recognition dictionary are read out to be subjected to 90 degree rotation, 180 degree rotation and 270 degree rotation by a feature rotator, thereby to produce standard patterns of the four directions. Similarity measures are individually calculated between the standard patterns of the four directions and the features of each extracted character, with respect to the four directions. This processing is repeated for a plurality of characters recorded in the document to select a direction having the maximum add value of the similarity measures, thereby to detect an input direction of the document.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: November 28, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Yasuo Kurosu, Hidefumi Masuzaki, Hiromichi Fujisawa
  • Patent number: 5469354
    Abstract: High-speed full document retrieval method and system capable of providing result of retrieval within practically acceptable short search time. Upon registration of documents in a document database, condensed texts are created by decomposing each of textual character strings of the documents to be registered into fragmental character strings in dependence on character species and by checking mutual inclusion relations existing among the fragmental character strings. A component character table is created in which characters occurring in each of the condensed texts are registered without duplication. The condensed texts and the component character table are registered in the data base together with the texts of the documents to be registered.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: November 21, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Atsushi Hatakeyama, Hiromichi Fujisawa, Kanji Kato, Hisamitsu Kawaguchi, Naoki Minegishi, Katsumi Tada, Satoshi Asakawa
  • Patent number: 5452451
    Abstract: A parallel comparator for performing a parallel and high-speed processing for collation of partial character strings which are partially taken out of a plurality of character strings of interest to be searched out with a character string to be searched in which document data to be searched is arranged sequentially from a leading character, is provided in a front stage of an automaton executing device. Only when a part of the character string to be searched coincides with the partial character string set in the comparator, the collation of the remaining portion of the character string to be searched is performed by the automaton executing device. Also, it is possible to set "don't care" in which a character at any position in the partial character string is ignored at the time of comparison by the comparator and to set a negation condition in which the comparison by the comparator is made taking the negation of a character at any position in the partial character string.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: September 19, 1995
    Assignees: Hitachi, Ltd., Hitachi Maxell, Ltd.
    Inventors: Mitsuru Akizawa, Hisamitsu Kawaguchi, Kanji Kato, Atsushi Hatakeyama, Kouki Noguchi, Hiromichi Fujisawa
  • Patent number: 5404506
    Abstract: An information retrieval system with good human-interface methods to give the system ease-of-use having two distinctive features with the first being visual interface and the second being natural language interpretation. The visual interface provides for visual interaction for local search and natural language interpretation provides for linguistic interaction for global search. The visual interface provides versatile views onto the contents of the knowledge base that the system has, controlling mechanisms for browsing through the knowledge base, a capability of showing relevant information for the users, and a mechanism for editing a query expression that describes information to retrieve. By using the visual interface for information retrieval, the users can easily create query expressions, by consulting and reacting with the system. The natural language interpretation makes use of a conceptual network as a knowledge-base that stores important concepts and relationships among these concepts.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: April 4, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Hiromichi Fujisawa, David Cohn, Atsushi Hatakeyama, Itsuko Kiuchi
  • Patent number: 5390034
    Abstract: Color image processing method and apparatus for suppressing side effects of a chrominance emphasizing process are provided. A chrominance C of an original color image is detected by a chrominance detector. A luminousness V of the original color image is detected by a luminousness detector. A parameter selector selects chrominance conversion parameters on the basis of the chrominance C and luminousness V to generate a selected parameter. A chrominance converter executes the chrominance conversion by chrominance conversion parameters a to i. It is possible to suppress a side effect such that the color deviation becomes conspicuous in a portion of small chrominance and luminousness due to the execution of the chrominance emphasizing process. Thus, image data of a high quality can be obtained.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: February 14, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Murakami, Eiichi Hadano, Kazuyuki Kodama, Kazunori Kinoshita, Masaaki Fujinawa, Hiromichi Fujisawa
  • Patent number: 5388167
    Abstract: A file document image input can have shading removed to produce a deshaded image that is useful for highly efficient compression encoding, to be thereafter stored and transmitted in such efficient encoded form. When the image is retrieved or received, the decoded and deshaded image may have shading returned to it by combining with a shaded template image stored in the template image memory or by synthesizing shading in specified regions. By removing shading from regions, optical character recognition, shading identification or other processing such as smear prevention can be enhanced.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: February 7, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Koga, Hiroshi Sakou, Masaaki Fujinawa, Hiromichi Fujisawa, Tatsuya Murakami, Yoshihiro Shima, Tsugio Takahashi, Kazunori Kinoshita, Kiyomichi Kurino, Hidefumi Masuzaki
  • Patent number: 5278981
    Abstract: A character stream search system using an FSA for determining at a time whether or not a plurality of character streams as search objects exist in a search character stream which undergoes a search operation and which comprises a plurality of characters expressed with codes. In the system, a collation is conducted between the search character stream and a search object character. In a case where there exists a matched search object character as a result of the collation, a state transition is carried out to a predetermined state indicated by the FSA. In a case where there does not exist a matched search object character, a failure processing to effect a state transition to a transition destination which is determined in association with the configuration of the FSA. The failure processing is completed at a count which is a predetermined upper-limit value for each character undergone the search operation.
    Type: Grant
    Filed: September 18, 1991
    Date of Patent: January 11, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Hisamitsu Kawaguchi, Kanji Kato, Hiromichi Fujisawa, Masaaki Fujinawa, Atsushi Hatakeyama