1
Mitsuru Akizawa, Hirofumi Yamashita, Hisamitsu Kawaguchi, Katsumi Tada, Kanji Kato, Akira Kito, Hidenori Yamada: File server system and file access control method of the same. Hitachi, Hitachi Computer Engineering, Fay Sharpe Beall Fagan Minnich & McKee, August 20, 1996: US05548724 (278 worldwide citation)

A typical structure of a file server system is a file server system having a plurality of file servers connected in parallel on a network and sharing files placed distributedly in the file servers among a plurality of client computers, and there are provided in a specific file server among the plura ...


2
Katsumi Tada, Kanji Kato, Satoshi Asakawa, Akio Azuma: Document searching method using forward and backward citation tables. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, November 3, 1998: US05832476 (108 worldwide citation)

A document searching system searches for other documents having a user-specified document cited therein as its referred document to thereby uncover the latest document associated with the user-specified document. In related document searching method, document information is registered in a text stor ...


3
Katsumi Tada, Kazuhiro Hashimoto, Shigeru Kameda, Noriyuki Yamasaki, Yoshiki Matsuda, Tetsuya Hashimoto, Akio Azuma: Document management system integrating an environment for executing an agent and having means for changing an agent into an object. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, March 23, 1999: US05887171 (85 worldwide citation)

A document management system a high extendability, flexibility, and stability capable of solving a problem that, as an agent-oriented paradigm system extends, the number of agents increases and indefinite factors increase. In the system configuration with an object execution environment implemented ...


4
Itaru Mimura, Hirotada Ueda, Shigeo Sumino, Mitsuru Ikezawa, Toshiaki Suzuki, Taizo Kinoshita, Katsumi Tada: Apparatus for integrally controlling audio and video signals in real time and multi-site communication control method. Hitachi, Antonelli Terry Stout & Kraus, August 20, 1996: US05548346 (80 worldwide citation)

A real time visual communication system capable of improving a correspondence between a received video signal and a received audio signal in real time and improving reality. An AV signal is separated into a video signal and an audio signal, and the output state of the video or audio signal is contro ...


5
Natsuko Sugaya, Katsumi Tada, Tadataka Matsubayashi, Akihiko Yamaguchi, Yasuhiko Inaba, Yousuke Ushiroji: Document retrieval method and system and computer readable storage medium. Hitachi, Antonelli Terry Stout & Kraus, December 16, 2003: US06665668 (75 worldwide citation)

A document retrieval system is provided which has a document display interface which is easy to recognize the important portions even if a document retrieved by using a query expression designated by a document or a long sentence is displayed. When a text is registered, predetermined character strin ...


6
Atsushi Hatakeyama, Hiromichi Fujisawa, Kanji Kato, Hisamitsu Kawaguchi, Naoki Minegishi, Katsumi Tada, Satoshi Asakawa: Document data processing method and apparatus for document retrieval. Hitachi, Antonelli Terry Stout & Kraus, November 21, 1995: US05469354 (72 worldwide citation)

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 re ...


7
Katsumi Tada, Itaru Mimura, Mitsuru Ikezawa, Taizo Kinoshita: Conference multimedia summary support system and method. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, November 5, 1996: US05572728 (64 worldwide citation)

A system and a user interface make it possible to easily edit important items of a program, such as a conference, in a short time using multimedia information.


8
Natsuko Mizutani, Atsushi Hatakeyama, Hisamitsu Kawaguchi, Katsumi Tada, Kanji Kato, Satoshi Asakawa: Document search method wherein stored documents and search queries comprise segmented text data of spaced, nonconsecutive text elements and words segmented by predetermined symbols. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, May 5, 1998: US05748953 (47 worldwide citation)

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 ...


9
Tadataka Matsubayashi, Katsumi Tada, Takuya Okamoto, Natsuko Sugaya, Yasushi Kawashimo: METHOD AND SYSTEM FOR EXTRACTING CHARACTERISTIC STRING, METHOD AND SYSTEM FOR SEARCHING FOR RELEVANT DOCUMENT USING THE SAME, STORAGE MEDIUM FOR STORING CHARACTERISTIC STRING EXTRACTION PROGRAM, AND STORAGE MEDIUM FOR STORING RELEVANT DOCUMENT SEARCHING PROGRAM. Hitachi, Antonelli Terry Stout & Kraus, October 29, 2002: US06473754 (47 worldwide citation)

A method for extracting features in contents of a document without using a word dictionary and a system using the method for accurately searching for a relevant document or documents at high speed. The method includes steps of storing character strings present in a text in a text database and possib ...


10
Takuya Okamoto, Toru Takahashi, Hisamitsu Kawaguchi, Katsumi Tada, Noriyuki Yamasaki: Document search method for registering documents, generating a structure index with elements having position of occurrence in documents represented by meta-nodes. Hitachi, Antonelli Terry Stout & Kraus, January 21, 2003: US06510425 (43 worldwide citation)

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 ...



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