Patents by Inventor Kazuo Iguchi

Kazuo Iguchi 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: 5539743
    Abstract: In a multiple access system for a communication network in which a main station (M) is coupled to a plurality of sub stations (S1-Sn) via lines, each sub station (S1-Sn) comprises a data buffer (1) for storing data (DATA-TE) which is to be transmitted, and a request information forming part (2) for sending to the main station (M) transmission request information (REQ) which includes reservation information obtained based on a data quantity (IN) stored within the data buffer, and the main station (M) comprises a control part (5) for forming a time table (3) of a data transmission reservation time and a corresponding sub station number based on the reservation information included in the transmission request information from each sub station and for giving authority to transmit data to each sub station by transmitting a data transmission enable signal (TENO) to each sub station depending on the data transmission reservation time and the sub station number of the time table.
    Type: Grant
    Filed: May 17, 1991
    Date of Patent: July 23, 1996
    Assignee: Fujitsu Limited
    Inventors: Shigeo Amemiya, Hiroshi Takeo, Koji Tezuka, Kazuo Iguchi
  • Patent number: 5475383
    Abstract: A cross-point type switch includes a plurality of basic elements arranged in rows and columns so as to form a matrix arrangement of the basic elements. Each of the basic elements includes a plurality of input ports, output ports, expanded input ports and expanded output ports. A write/read part is connected to a common memory and has the function of writing data into the common memory and reading out the data from the common memory. A selector part selectively outputs either the data read out from the common memory or data from the expanded input ports to the output ports. The expanded output ports are directly connected to the input ports.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: December 12, 1995
    Assignees: Fujitsu Limited, Nippon Telegraph and Telephone Corp.
    Inventors: Shinji Ohta, Tomohiro Shinomiya, Hiroshi Takeo, Misao Fukuda, Kazuo Iguchi
  • Patent number: 5432713
    Abstract: A usage parameter control circuit for effecting a policing control in an ATM transmission network, comprising a time interval measuring unit for measuring a time interval between a current arrival time of a cell to be judged, and an arrival time of a cell which arrived a reference threshold number of cells before the currently arriving cell arrives; and a judging unit for judging whether or not the measured time interval is shorter than a reference threshold time interval, whereby a longer accessing time is allowed and the circuit construction has a flexible expandability.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: July 11, 1995
    Assignees: Fujitsu Limited, Nippon Telegraph and Telephone Corporation
    Inventors: Hiroshi Takeo, Michio Kusayanagi, Kazuo Iguchi, Naoaki Yamanaka, Youichi Sato
  • Patent number: 5414415
    Abstract: In a cross-connect apparatus for use in selectively connecting a plurality of input transmission paths to a plurality of output transmission paths, each of the input and the output transmission paths is divided into first through m-th groups each of which is composed of first through n-th transmission paths, first through m-th elementary switch modules are located between the input and the output transmission paths, n in number, of the first through the m-th groups and are connected to a connection switch module through first to m-th input internal path groups each of which is composed of n internal paths and which are extended into first through m-th switch units each of which has input terminals, n(m-1) in number, and output terminals, n in number, where n and m are natural numbers. An i-th one of the switch units in the connection switch module is connected to the input path groups, (m-1) in number, except an i-th internal path group, where i is a natural number between unity and m, both inclusive.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: May 9, 1995
    Assignees: Nippon Telegraph and Telephone Corp., Fujitsu Limited, NEC Corporation
    Inventors: Hiromi Ueda, Ikuo Tokizawa, Kazuo Iguchi, Haruo Yamashita, Takatoshi Kurano, Motoo Nishihara
  • Patent number: 5233452
    Abstract: In order to enhance the reliability of conduction between a connecting pin and an electrode terminal, glass beads and/or glass fibers are added to a molding agent. After the connecting pin is inserted into an electrode terminal portion of a glass substrate onto which the connecting pin abuts, the molding agent having the glass beads and/or glass fibers is formed and applied around the connecting pin so that the connecting pin is coated and secured to the electrode terminal.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: August 3, 1993
    Assignee: Seiko Epson Corporation
    Inventor: Kazuo Iguchi
  • Patent number: 5233451
    Abstract: A liquid crystal display device having a chamfer formed along at least one of the ends of a substrate having a terminal electrode disposed thereon for producing a substantially unimpeded flow of an electric current between a connect pin clip and the terminal electrode. The chamfer is a planar chamfer or an R chamfer and has a chamfer angle and chamfer quantity which can be optimized depending on the substrate thickness. After the connect pin is inserted and disposed, molding agents are applied to cover the connect pin clip.
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: August 3, 1993
    Assignee: Seiko Epson Corporation
    Inventor: Kazuo Iguchi
  • Patent number: 5185741
    Abstract: An inter-network connecting system comprising a main network having an exchange function and a subnetwork having no exchange function, to improve the expandability, economy, and efficiency of the subnetwork. When an extension line communication which is a communication in the subnetwork is to be carried out, a call setting processing processor in the main network gives a calling terminal a first special signal so as to operate lookback means in a connection control unit in the subnetwork to set a physical communication paths for an extension line between terminals in the subnetwork; and when an outer line communication which is a communication between the main network and a terminal in the subnetwork is to be carried out, the call setting processing processor gives a calling terminal a second signal so as to stop the operation of the loopback means in the connection control unit to set a physical communication path for an outer line between the exchange and the terminal in the subnetwork.
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: February 9, 1993
    Assignee: Fujitsu Limited
    Inventors: Kazuo Iguchi, Hiroshi Takeo, Shigeo Amemiya, Koji Tezuka
  • Patent number: 5166675
    Abstract: A communication system containing a master station and a plurality of slave stations. The master station receives a request from one of the plurality of slave stations and memorizes one or more requests from one or more slave stations. The master station also sends a request sending allowance signal which addresses one of the plurality of slave stations to give an allowance to send a request for sending data, and sends a data sending allowance signal which addresses one of the plurality of slave stations to give an allowance to send data, according to a request which is memorized. Each of the slave stations detects a request sending allowance signal which addresses its own slave station, and a data sending allowance signal which addresses its own slave station. Each of the slave stations also sends a request for sending data to the master station when its own slave station detects a request sending allowance signal which addresses its own slave station.
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: November 24, 1992
    Assignee: Fujitsu Limited
    Inventors: Shigeo Amemiya, Koji Tezuka, Tomohiro Shinomiya, Hiroshi Takeo, Tetsuo Soejima, Kazuo Iguchi
  • Patent number: 5132680
    Abstract: A communication system including a master station, a plurality of slave stations each for communicating with the master station, a two-way transmission line connecting the master station and the plurality of slave stations. Each of the slave stations sends a request for further communication with the master station, to the master station when its own slave station is allowed to communicate with the master station and its own slave station has the above request. The master station detects the request for further communication with the master station in a signal sent from a slave station, and memorizes the slave station from which the request for further communication with the master station is detected, until an allowance signal is sent to the slave station from the master station corresponding to the memorizing of the slave station.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: July 21, 1992
    Assignee: Fujitsu Limited
    Inventors: Koji Tezuka, Tomohiro Shinomiya, Shigeo Amemiya, Kazuo Iguchi, Tetsuo Soejima
  • Patent number: 5122158
    Abstract: A method and device for speeding-up and enhancing the cleaning of soiled parts of clothes by rub-coating with an enzyme-containing liquid detergent by means of a porous body made of heated and sintered synthetic plastic material.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: June 16, 1992
    Assignee: Kao Corporation
    Inventors: Muthumi Kuroda, Akira Suzuki, Kazuo Iguchi, Yumio Nakasone
  • Patent number: 5086436
    Abstract: A coded transmission system wherein each bit of transmitted data having a logical value is coded depending on a coded result of a preceding bit. The coded transmission system contains a sender-side apparatus, a transmission line, and a receiver-side apparatus. In the sender-side apparatus, a resetting bit and a message are generated; a code of a bit last transmitted which is necessary to code a bit which is to be transmitted next is memorized in a first preceding code memorizing circuit; and the content of the first preceding code memorizing circuit is reset to an initial code responding to the resetting bit. A coding circuit receives the resetting bit and the message, codes each bit of the message in accordance with a predetermined coding rule and the content of the first preceding code memorizing circuit, and codes the resetting bit to a predetermined resetting code which is different from the codes used in the coding of the message.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: February 4, 1992
    Assignee: Fujitsu Limited
    Inventors: Koji Tezuka, Shigeo Amemiya, Tomohiro Shinomiya, Kazuo Iguchi, Tetsuo Soejima
  • Patent number: 4984238
    Abstract: A frame synchronization method in which a synchronization detection of a frame synchronization signal using one of n-multiplexed frame synchronization signals derived from a sequence of frame synchronization signals each delayed by one bit from the preceding frame synchronization signal, a synchronization confirmation as synchronization guard by detecting a repetition of the synchronization detections of the frame synchronization signal, a confirmation of the subsequent frame identification signal based on the synchronization confirmation; and a separation of the received multiplexed signals into a plurality of channels based on the synchronization confirmed frame synchronization signal and the confirmed frame identification signal are carried out.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: January 8, 1991
    Assignee: Fujitsu Limited
    Inventors: Toshiaki Watanabe, Kazuo Iguchi, Tetsuo Soejima
  • Patent number: 4977204
    Abstract: A non-aqueous shade enhancing agent composition comprises (a) a copolymer obtained by graft-polymerizing a main chain polymer being substantially insoluble in a non-aqueous solvent having a solubility parameter in the range of 6.5 t0 10.0 with a branch polymer being soluble in said solvent at a weight ratio of the main chain polymer to the branch polymer in the range between 90/10 and 10/90 and (b) a specific quaternary ammonium salt.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: December 11, 1990
    Assignee: Kao Corporation
    Inventors: Tsutomu Nebashi, Kazuo Iguchi, Moriyasu Murata
  • Patent number: 4977558
    Abstract: A circuit which operates at the fixed timing and discriminates the control signal is provided and the timing pulse for demultiplexing is controlled in accordance with the discriminated control signal in the receiving part of the synchronized multiplexing system in which the basic signals are generated by inserting the control signal required for multiplexing on the frame structure of basic signal rate and the high level multiplexing signal is formed by multiplexing such basic signals, thereby stable correspondence between the channel at the time of multiplexing in the sending side and the channel after the demultiplexing in the receiving side can be ensured.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: December 11, 1990
    Assignee: Fujitsu Limited
    Inventors: Kazuo Iguchi, Tetsuo Soejima, Toshiaki Watanabe, Shigeo Amemiya
  • Patent number: 4924461
    Abstract: In a sequential polling type communication network system including a master station, a first channel, a second channel, and at least two slave stations, the master station includes request registration units for registering data transmission requests from slave stations during a data transmission by another slave station, and an interrupt polling unit for polling the slave station which has issued the data transmission request after completion of the data transmission or completion of a polling of a slave station, and the slave station includes a unit for responding to a polling during the data transmission, and transitting a data transmission request when data to be transmitted exists, and for responding to the interrupt polling from the master station, and transmitting the data to the master station until the data transmission is completed.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: May 8, 1990
    Assignee: Fujitsu Limited
    Inventors: Shigeo Amemiya, Hiroaki Komine, Tomohiro Shinomiya, Kazuo Iguchi, Tetsuo Soejima
  • Patent number: 4920535
    Abstract: A demultiplexing circuit includes a frame synchronization circuit which simultaneously detects the occurrence of a predetermined frame synchronization pattern and the occurrence of a predetermined identification byte within the frame synchronization pattern. Since the pattern and identification bit are detected simultaneously and from the same data, the circuit is simplified and the demultiplexing is performed more quickly and efficiently.
    Type: Grant
    Filed: December 14, 1988
    Date of Patent: April 24, 1990
    Assignee: Fujitsu Limited
    Inventors: Toshiaki Watanabe, Kazuo Iguchi, Tetsuo Soejima, Shinji Ohta
  • Patent number: 4920546
    Abstract: Disclosed is a frame synchronizing apparatus in a receiving equipment for receiving digital signals for PCM communication. The digital signals consists serial signals at a rate of f.sub.0 (bps). The serial signals include a frame synchronizing signal consituting n bits or a part of the frame synchronizing signal, collectively arranged in one frame. To attain a high-speed operation and a shorter synchronization establishing time, the apparatus comprises a latching circuit for converting the serial signals into parallel signals and for latching the parallel signals, and a circuit for detecting a plural number of times of synchronization during the n bit interval in one frame.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: April 24, 1990
    Assignee: Fujitsu Limited
    Inventors: Kazuo Iguchi, Tetsuo Soejima, Kazuo Murano, Shigeo Amemiya, Hiroaki Komine, Toshiaki Watanabe, Tomohiro Shinomiya
  • Patent number: 4850047
    Abstract: An optical bus type communication system comprises a bus type transmission line consisting of an optical fiber, a light source provided at the one end of the bus type transmission line for sending an optical signal having a constant level to the bus type transmission line, a plurality of optical switches mounted on the bus type transmission line, and a plurality of terminal interfaces. Each terminal interface sends data by switching the corresponding optical switch so that the optical signals on the transmission line are modulated with the data.
    Type: Grant
    Filed: August 19, 1987
    Date of Patent: July 18, 1989
    Assignee: Fujitsu Limited
    Inventors: Kazuo Iguchi, Tetsuo Soejima, Shigeo Amemiya, Hiroaki Komine
  • Patent number: 4207459
    Abstract: In an optical communication system, wherein light intensity modulation with no carrier is performed using a light emitting diode with linear relation of the drive signal current vs. optical output power over a range which changes with frequency of the drive signal, the input signal is modulated for relatively larger amplification of frequencies higher than a predetermined frequency, above the thermal response frequency of the light emitting diode, than for frequencies lower than the predetermined frequency.
    Type: Grant
    Filed: September 9, 1977
    Date of Patent: June 10, 1980
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Nakamura, Naomasa Hanano, Kazuo Iguchi
  • Patent number: 3984493
    Abstract: A non-crystalline resin composition possessing rubberlike elasticity, prepared by homogeneously mixing (1) 100 parts by weight of a vinyl chloride polymer, with (2) 110 to 160 parts by weight of a thermoplastic polyester-urethane formed by reacting an organic diisocyanate with a polyester diol having a molecular weight of at least 4000, said polyester diol having been formed by reacting a polyol component comprising 1,6-hexanediol and a low molecular weight diol having a side-chain methyl group at a mixing molar ratio of from 70 : 30 to 90 : 10, with a saturated aliphatic dicarboxylic acid having 5 to 8 carbon atoms.
    Type: Grant
    Filed: January 23, 1975
    Date of Patent: October 5, 1976
    Assignee: Kao Soap Co., Ltd.
    Inventors: Yoshiteru Kazama, Yasuo Miura, Yuji Suzuki, Kazuo Iguchi, Kenji Kawabuchi