Patents by Inventor Tohru Hoshi

Tohru Hoshi 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: 7145901
    Abstract: By adopting a method of requesting a band for each plurality of calls, or a method of requesting a band independently of origination or termination of a call, a method of reducing the frequency of origination of a call is provided. A first aspect may provide that a gate keeper requests security and release of a band not every call, but collectively for a plurality of calls, and the security and the release of a band are requested at frequency less than that of origination or termination of calls. A second aspect may provide that an estimated value of a time series change in necessary band is previously set in a gate keeper, and security and release of a band required for communication are requested depending on a time, but independently of origination and termination of a call.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: December 5, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Koji Tsukada, Tohru Hoshi, Keiko Tanigawa
  • Patent number: 6826167
    Abstract: A communication relay system is connected to a line switched mobile communication system adapted to accommodate therein mobile terminals through radio channels and a packet switched mobile communication system adapted to accommodate therein the mobile terminals through radio channels. When a connection request has been made to a portable terminal, the communication relay system judges whether the portable terminal of interest is connected either to the line switched mobile communication system or to the packet switched mobile communication system.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: November 30, 2004
    Assignee: Hitachi, Ltd
    Inventors: Tatsuaki Osafune, Katsuyoshi Kitai, Tohru Hoshi, Tomohiro Hotta, Koji Hirayama
  • Publication number: 20020176406
    Abstract: By adopting a method of requesting a band for each plurality of calls, or a method of requesting a band independently of origination or termination of a call, a method of reducing the frequency of origination of a call is provided. A first aspect may provide that a gate keeper requests security and release of a band not every call, but collectively for a plurality of calls, and the security and the release of a band are requested at frequency less than that of origination or termination of calls. A second aspect may provide that an estimated value of a time series change in necessary band is previously set in a gate keeper, and security and release of a band required for communication are requested depending on a time, but independently of origination and termination of a call.
    Type: Application
    Filed: May 14, 2002
    Publication date: November 28, 2002
    Inventors: Koji Tsukada, Tohru Hoshi, Keiko Tanigawa
  • Patent number: 6483835
    Abstract: A gateway (GW) for relaying a communication between a public telephone network and a routing server for managing use status of the GW and a network are provided on the internet. When a connection request is received, the GW issues a request to retrieve a route in which the costs are minimum and a necessary bandwidth can be reserved. The routing server retrieves the route of the minimum costs using the bandwidth reservation status of the internet and the partner's telephone number and notifies the request issued GW of the address of the partner GW. The costs at that time point may be notified to the user and the user selects whether the communication is performed or not. By managing the current connection information established by each GW, if a necessary bandwidth cannot be reserved, an audio compression ratio may be changed.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: November 19, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Keiko Tanigawa, Susumu Matsui, Koji Tsukada, Tohru Hoshi
  • Publication number: 20020133380
    Abstract: A plan and information of a status making an obstacle to the execution of the plan are successively collected in advance by use of radio communication means and the collected information and the plan are compared with each other so that an impediment in executing the plan is extracted to support the formulation of a new plan.
    Type: Application
    Filed: December 13, 2000
    Publication date: September 19, 2002
    Inventors: Masataka Okayama, Tohru Hoshi
  • Publication number: 20020072367
    Abstract: A communication relay system is connected to a line switched mobile communication system adapted to accommodate therein mobile terminals through radio channels and a packet switched mobile communication system adapted to accommodate therein the mobile terminals through radio channels. When a connection request has been made to a portable terminal, the communication relay system judges whether the portable terminal of interest is connected either to the line switched mobile communication system or to the packet switched mobile communication system.
    Type: Application
    Filed: August 2, 2001
    Publication date: June 13, 2002
    Inventors: Tatsuaki Osafune, Katsuyoshi Kitai, Tohru Hoshi, Tomohiro Hotta, Koji Hirayama
  • Patent number: 6249767
    Abstract: A portable information terminal including a self-positioning measuring device is provided to make reservations and obtain status information of available services from a plurality of reservation centers and a plurality of status information providers, via a communication network.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: June 19, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Masataka Okayama, Tohru Hoshi
  • Patent number: 6228240
    Abstract: An apparatus for producing deionized water consisting essentially of an electrodialyzer having cation exchange membranes and anion exchange membranes alternately arranged between a cathode and an anode to form demineralizing compartments and concentrating compartments, and ion exchangers accommodated in the demineralizing compartments, wherein a pressure of from 0.1 to 20 kg/cm2 is exerted between the ion exchangers accommodated in the demineralizing compartments and the cation exchange membranes and anion exchange membranes defining the demineralizing compartments.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: May 8, 2001
    Assignees: Asahi Glass Company Ltd., Glegg Water Conditioning, Incorporated
    Inventors: Ichiro Terada, Hiroshi Toda, Junjiro Iwamoto, Kazuo Umemura, Ken Komatsu, Tohru Hoshi, Mark Philip Huehnergard, David Florian Tessier, Ian Glenn Towe
  • Patent number: 6078583
    Abstract: A communication system and communication method adapted so that the user of one of the communication terminals can more easily communicate with another one connected to the internet through the public network. Connection management servers for relay and manage the communication are provided at nodes between the internet and the public network. Each of the connection management servers assigns an IP address to the communication terminal connected to the internet through the public network, and registers the IP address and the telephone number. When receiving a communication request, the connection management server specifies a communication route to the communication terminal on the basis of the telephone number of the called-side communication terminal set in the communication request. The server checks if the called-side communication terminal is connected to the internet on the basis of the above registration. If it is connected to the internet, the server relays the communication request.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: June 20, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Keiko Takahara, Tohru Hoshi, Toshiaki Koyama
  • Patent number: 5961805
    Abstract: An apparatus for producing deionized water consisting essentially of an electrodialyzer having cation exchange membranes and anion exchange membranes alternately arranged between a cathode and an anode to form demineralizing compartments and concentrating compartments, and ion exchangers accommodated in the demineralizing compartments, wherein a pressure of from 0.1 to 20 kg/cm.sup.2 is exerted between the ion exchangers accommodated in the demineralizing compartments and the cation exchange membranes and anion exchange membranes defining the demineralizing compartments.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: October 5, 1999
    Assignees: Ashai Glass Company Ltd., Glegg Water Conditioning, Incorporated
    Inventors: Ichiro Terada, Hiroshi Toda, Junjiro Iwamoto, Kazuo Umemura, Ken Komatsu, Tohru Hoshi, Mark Philip Huehnergard, David Florian Tessier, Ian Glenn Towe
  • Patent number: 5944972
    Abstract: A method for producing deionized water by self-regenerating type electrodialysis deionization, which comprises (i) using a deionized water-producing apparatus containing an electrodialyzer comprising cation exchange membranes and anion exchange membranes alternately arranged between an anode compartment provided with an anode and a cathode compartment provided with a cathode, demineralizing compartments compartmentalized with anion exchange membranes on the anode side and compartmentalized with cation exchange membranes on the cathode side, and concentrating compartments compartmentalized with cation exchange membranes on the anode side and compartmentalized with anion exchange membranes on the cathode side, the electrodialyzer having ion exchangers accommodated in the demineralizing compartments, and (ii) applying a voltage while supplying water to be treated to the demineralizing compartments to remove impurity ions in the water to be treated, wherein at least a part of the untreated water or already treate
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: August 31, 1999
    Assignees: Asahi Glass Company Ltd., Glegg Water Conditioning, Incorporated
    Inventors: Hiroshi Toda, Tohru Hoshi, David Florian Tessier
  • Patent number: 5905495
    Abstract: A communication system which can communicate with a party user even when an originator user of a communication terminal does not know the terminal address of a communication terminal of the party user with whom the originator user wants to communicate. When its own user A does not know the terminal address of a communication terminal of a user B, a communication terminal of the user A sends an outgoing file having its own terminal address stored therein as an electronic mail directed to the user B. When receiving the outgoing file as the electronic mail, the communication terminal of the user B displays an icon on its display unit to prompt the user B to enter an instruction of performing reply communication. In response to it, when the user B clicks a mouse on the icon, the communication terminal of the user B can perform the reply communication to the communication terminal corresponding to terminal address stored in the outgoing file.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: May 18, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Noriyuki Tanaka, Keiko Takahara, Kazuma Yumoto, Naoko Iwami, Tohru Hoshi, Toshiaki Koyama, Susumu Matsui
  • Patent number: 5831000
    Abstract: The improved hybrid calcitonin has a peptide segment in human calcitonin and a peptide segment in calcitonin derived from animals other than humans, such as eel, salmon and chicken. Each of the human or human analog calcitonins and the calcitonins derived from animals other than humans may be either native calcitonin or an analog thereof. The hybrid calcitonin has the outstanding advantage that it exhibits biological activities as strong as eel, salmon and chicken calcitonin while causing no side effects including nausea, disorders in the functions of the digestive tract or antigenicity.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: November 3, 1998
    Assignees: Chugai Seiyaku Kabushiki Kaisha, Asahi Glass Co., Ltd.
    Inventors: Eigoro Murayama, Tohru Hoshi
  • Patent number: 5758082
    Abstract: In mail terminal equipment for receiving and reproducing a mail which has been produced using multi-media data containing a plurality of continuous audio data and a plurality of drawing data synchronized with at least a part of the audio data and has been transmitted thereto. Where reproduction of the drawing data is later than that if the audio data, the drawing data is synchronized with the audio data without interrupting reproduction of the audio data. When the drawing data still remains which at certain timing (e.g., timing when supplementing the audio data to a audio buffer for storing the audio data waiting for reproduction), should be reproduced until that time point, but is not reproduced resulting from the delay of reproduction of the drawing data due to the drawing processing, the loading situation and the like, the drawing data of interest is skipped so as not to be reproduced, and the next drawing data is reproduced.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: May 26, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Kazuma Yumoto, Naoko Iwami, Tohru Hoshi, Toshiaki Koyama
  • Patent number: 5550978
    Abstract: In a multiprocessor system including a plurality of processors and asynchronous transfer mode (ATM) switches in the number corresponding to a bit width of internal buses of respective processors each processor has an interface for connecting in parallel to each of the plurality of ATM switches. Each interface splits a transmission data block into a plurality of bit data blocks at every bit position, converts them into a plurality of cells by adding a header including routing information determined by a destination processor to each bit data block, and sends these cells in parallel to the plurality of ATM switches. The plurality of cells are transferred in parallel to the destination processors by the ATM switches and reassembled into an original data block in the interface of the destination processor.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: August 27, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Yasuhiro Takahashi, Tohru Hoshi
  • Patent number: 4837816
    Abstract: In a telephone switching apparatus having an inter-office interface consisting of a plurality of communication circuits having different priorities and a control line for transfer of call control signals, a first circuit having the highest priority is hunted from the idle one of said communication circuits upon setting of a call and the communication is started. During the communication, if a second circuit having a higher priority than that of the first circuit becomes idle, by communicating a control signal to switch the circuit between the switching apparatuses, the busy circuit for the call is switched from the first circuit of a low priority to the second circuit of a high priority.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: June 6, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Noboru Mizuhara, Tohru Hoshi, Jiro Kashio, Takashi Morita
  • Patent number: 4771424
    Abstract: In a communication network, in which a plurality of switching nodes are connected with each other through a plurality of relay lines and one of the switching nodes acts as a center node for network routing, the center node estimates the state of delay of data for every relay line on the basis of information previously inputted, indicating the communication network configuration, and the state of delay of data reported by each of the switching nodes, and informs each of the switching nodes of said estimated state of delay of data. Each of the switching nodes determines and selects the relay line giving the shortest delay of data for every destination, to which it outputs data, on the basis of the state of delay at the relevant switching node itself and that received from the center node.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: September 13, 1988
    Assignees: Hitachi, Ltd., Hitachi Seibu Soft Ware Co.
    Inventors: Michio Suzuki, Takashi Kanoh, Tohru Hoshi, Jiro Kashio, Yasushi Takeuchi
  • Patent number: 4024352
    Abstract: A plurality of cross-point matrices each having a plurality of holding circuits respectively associated with a corresponding cross point are arranged in multiple stages, which are linked with each other to form a multi-stage switching network. Each switch matrix is provided with an associated NAND gate connected to gates capable of being selectively impressed with the signals representing the state of the holding circuits within the particular switch matrix. The output of the NAND gate is connected to an OR gate for each stage.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: May 17, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Takuji Mukaemachi, Tohru Hoshi