1
Hiroshi Matsumoto: Active matrix liquid crystal display having a peripheral driving circuit element. Casio Computer, Frishauf Holtz Goodman & Woodward, June 21, 1994: US05323042 (265 worldwide citation)

In the case of an LDD-structure thin film transistor, an on-current becomes large as impurity concentration of low level impurity source and drain regions is increased. Then, when the impurity concentration is increased to a first impurity concentration, the on-current reaches to a substantially max ...


2
Hiroshi Matsumoto, Kazuo Takaragi, Seiichi Susaki, Hiroyuki Maezawa, Shinobu Koizumi: Electronic document processing system and method of forming digital signature. Hitachi, Hitachi Chubu Software, Fay Sharpe Beall Fagan Minnich & McKee, November 7, 1995: US05465299 (234 worldwide citation)

In a terminal which received an electronic document with at leastone digital signature, when a user changes the contents of the received electronic document, a new digital signature is produced by enciphering signature data by using a secret key of the user, the signature data including a hash total ...


3
Masahide Nomura, Tadayoshi Saito, Hiroshi Matsumoto, Makoto Shimoda, Masakazu Kondoh, Hisanori Miyagaki, Akira Sugano, Nobuyuki Yokokawa: Process control method and system for performing control of a controlled system by use of a neural network. Hitachi, Antonelli Terry Stout & Kraus, May 10, 1994: US05311421 (144 worldwide citation)

A method for controlling a controlled system by a controller such that a controlled variable can be brought into conformity with a desired value. With respect to at least one of input/output variables for a combined controlling-controlled system, which includes in combination the controller and the ...


4
Hiroshi Matsumoto, Masahide Nomura, Makoto Shimoda, Tadayoshi Saito, Hiroshi Yokoyama, Kenji Baba, Junzo Kawakami, Yasunori Katayama, Akira Kaji, Seiitsu Nigawara: Neural network state diagnostic system for equipment. Hitachi, Antonelli Terry Stout & Kraus, July 26, 1994: US05333240 (118 worldwide citation)

A state diagnostic system for equipment is disclosed. The system is constructed of a neural network model for learning in advance one or more samples of information on vibrations, which are produced in a specific operation state of the equipment, in association with the corresponding operation state ...


5
Hiroshi Matsumoto, Makoto Shimoda, Masahide Nomura, Tadayoshi Saito, Hiroshi Yokoyama, Akira Kaji, Hisanori Miyagaki, Seiitsu Nigawara, Hiroshi Hanaoka: Process control system and power plant process control system. Hitachi, Antonelli Terry Stout & Kraus, April 19, 1994: US05305230 (102 worldwide citation)

A process control system controls a large scale plant such as thermal power plant. This process control system includes a target setting unit for setting an operation target, a control unit for receiving a signal indicating the operation target and for outputting a controlled variable to operate the ...


6
Hiroshi Matsumoto: Semiconductor device in which wiring layer is formed below bonding pad. Kabushiki Kaisha Toshiba, Finnegan Henderson Farabow Garrett and Dunner, January 8, 1991: US04984061 (77 worldwide citation)

In a semiconductor device wherein a bonding pad is formed on an electrode through an insulating interlayer and a bonding wire is bonded to the bonding pad by thermocompression bonding, a through hole for connecting the bonding pad and the electrode is formed in the insulating interlayer above a cont ...


7
Hiroshi Matsumoto: Thin film transistor device having driving circuit and matrix circuit. Casio Computer, Frishauf Holtz Goodman & Woodward, March 7, 1995: US05396084 (67 worldwide citation)

A thin film semiconductor device comprises a matrix circuit portion and a peripheral circuit portion. An NMOS thin film transistor included in the peripheral circuit portion comprises as an active layer a polysilicon thin film formed on a substrate, leading to a high on-current and an improved switc ...


8
Kazuo Takaragi, Seiichi Susaki, Hiroshi Matsumoto, Tsutomu Nakamura: Group cipher communication method and group cipher communication system. Hitachi, Hitachi Chubu Software, Antonelli Terry Stout & Kraus, May 3, 1994: US05309516 (59 worldwide citation)

Method and system which permit, among a plurality of terminals, group cipher communication from a desired terminal to a number of desired terminals while ensuring safety of security. A plurality of secret values called master keys which are common to a predetermined subset of IC cards are stored in ...


9
Hisanori Miyagaki, Akira Sugano, Atsushi Takita, Eiji Toyama, Katsuhito Shimizu, Haruya Tobita, Hiroshi Matsumoto, Masahide Nomura, Tooru Kimura: Process controller for controlling a process to a target state. Hitachi, Antonelli Terry Stout & Kraus, December 7, 1993: US05268835 (57 worldwide citation)

A process controller having a setting section for giving a target value for a fixed period of time, a control section including a predicting section for predicting a process response for the fixed time period in accordance with a current value of a process control amount and a virtual value of an op ...


10
Tadayoshi Saito, Junzo Kawakami, Susumu Takahashi, Testuo Suehiro, Hiroshi Matsumoto, Kouji Tachibana: Pid controller system. Hitachi, Antonelli Terry & Wands, February 20, 1990: US04903192 (50 worldwide citation)

A PID controller system comprises a PID controller for PID controlling a process standing for an object to be controlled, and an automatic adjuster being responsive to a variable relating to the manipulation of the PID controller and the response shape of the control variable from the process to obt ...