Patents by Inventor Kazuya Asano

Kazuya Asano 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: 7471690
    Abstract: There are provided a packet transfer device, a semiconductor device, and a packet transfer system, which can provide a DMZ constructed in a simple configuration. A LAN is connected to a first port. A public server is connected to a second port. A WAN is connected to a third port. A filtering section performs filtering processing according to attributes of each packet inputted via any one of the first to third ports. A routing section carries out routing processing on the packet which was not discarded by the filtering section.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: December 30, 2008
    Assignee: Fujitsu Limited
    Inventors: Kazuya Asano, Teruhiko Nagatomo, Tomokazu Aoki, Junichi Hashida
  • Patent number: 7457292
    Abstract: A packet identification device which is capable of achieving high-speed packet identification while suppressing an increase in circuit size. A lookup table stores a plurality of reference data each divided into unit data associated with respective attributes, in a distributed manner in respective storage areas having addresses defined on an attribute-by-attribute basis, and is operable when a reading address is input, to output a plurality of unit data associated with one of the attributes corresponding to the reading address. An analysis circuit analyzes an attribute of a comparison data item in the input packet. An address control circuit outputs an address corresponding to the attribute of the comparison data item analyzed by the analysis circuit to the lookup table, as the reading address.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: November 25, 2008
    Assignee: Fujitsu Limited
    Inventor: Kazuya Asano
  • Publication number: 20080028210
    Abstract: A packet cipher processor and method for realizing fast packet cipher processing. A packet identification unit analyzes a received target packet to identify an applicable policy to the target packet. Then the packet identification unit creates and gives policy information of the identified policy together with the target packet to a header processing unit. The header processing unit converts the header of the target packet according to the policy information and passes the processing of the target packet to a cipher unit. The cipher unit performs a prescribed cipher process according to the policy on the target packet with the converted header, and outputs the ciphered packet. The packet identification unit, the header processing unit, and the cipher unit operate independently to perform the above processes in a pipeline manner.
    Type: Application
    Filed: July 23, 2007
    Publication date: January 31, 2008
    Applicant: Fujitsu Limited
    Inventor: Kazuya Asano
  • Patent number: 7197035
    Abstract: In a packet transfer apparatus for transferring packets between first and second networks, a translated network address is assigned to a first node in the first network and having a first private network address when the first packet from the first node is transferred to a second node in the second network, and said translated network address is stored in an address management circuit associated with said first and second network addresses. Thereafter, address translation for realizing an NAT function is performed on subsequent packets transferred between the first and second nodes, by a dedicated hardware circuit and reference to the address management circuit, while performing processing for receiving the packets.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: March 27, 2007
    Assignee: Fujitsu Limited
    Inventor: Kazuya Asano
  • Patent number: 7154890
    Abstract: A packet transfer device has a layer 2 switch and performs switching by referring to header information of a 3rd layer and higher layers. Input/output ports receives packets from and transmits packets to other devices connected to the packet transfer device. A header information extracting circuit extracts header information belonging to a 3rd layer (network layer) and higher layers of a network protocol from packets inputted from the respective input/output ports. A table stores header information and control information corresponding to the header information in association with each other. A control information acquiring circuit acquires control information corresponding to the header information extracted by the header information extracting circuit from the table. A processing circuit processes packets based on the control information acquired by the control information acquiring circuit.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: December 26, 2006
    Assignee: Fujitsu Limited
    Inventors: Teruhiko Nagatomo, Kazuya Asano, Junichi Hashida
  • Patent number: 6950877
    Abstract: In a packet transmission system including host apparatuses and a router which transfers a packet from host apparatuses in a first host group to host apparatuses in a second host group, each host apparatus in the first host group inserts in a packet an IP address and a link-layer address of a destination host apparatus in the second host group before transmitting the packet. When the router receives the packet, the router determines an output port connected to at least one host apparatus in the second host group including the destination host apparatus, based on the IP address of the destination host apparatus inserted in the packet, and transmits the received packet from the determined output port.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: September 27, 2005
    Assignee: Fujitsu Limited
    Inventors: Kazuya Asano, Teruhiko Nagatomo
  • Publication number: 20050175231
    Abstract: A decision algorithm of discriminating a defect type and/or a defect level is automatically produced in a short time. The accuracy of defect classification in terms of a defect type or a defect level is improved.
    Type: Application
    Filed: May 16, 2003
    Publication date: August 11, 2005
    Inventors: Takehide Hirata, Kazuya Asano, Yasuo Tomura
  • Publication number: 20050163121
    Abstract: A packet identification device which is capable of achieving high-speed packet identification while suppressing an increase in circuit size. A lookup table stores a plurality of reference data each divided into unit data associated with respective attributes, in a distributed manner in respective storage areas having addresses defined on an attribute-by-attribute basis, and is operable when a reading address is input, to output a plurality of unit data associated with one of the attributes corresponding to the reading address. An analysis circuit analyzes an attribute of a comparison data item in the input packet. An address control circuit outputs an address corresponding to the attribute of the comparison data item analyzed by the analysis circuit to the lookup table, as the reading address.
    Type: Application
    Filed: March 18, 2005
    Publication date: July 28, 2005
    Applicant: FUJITSU LIMITED
    Inventor: Kazuya Asano
  • Publication number: 20030076830
    Abstract: In a packet transfer apparatus for transferring packets between first and second networks, a translated network address is assigned to a first node in the first network and having a first private network address when the first packet from the first node is transferred to a second node in the second network, and said translated network address is stored in an address management circuit associated with said first and second network addresses. Thereafter, address translation for realizing an NAT function is performed on subsequent packets transferred between the first and second nodes, by a dedicated hardware circuit and reference to the address management circuit, while performing processing for receiving the packets.
    Type: Application
    Filed: March 22, 2002
    Publication date: April 24, 2003
    Applicant: Fujitsu Limited
    Inventor: Kazuya Asano
  • Publication number: 20020176426
    Abstract: There are provided a packet transfer device, a semiconductor device, and a packet transfer system, which can provide a DMZ constructed in a simple configuration. A LAN is connected to a first port. A public server is connected to a second port. A WAN is connected to a third port. A filtering section performs filtering processing according to attributes of each packet inputted via any one of the first to third ports. A routing section carries out routing processing on the packet which was not discarded by the filtering section.
    Type: Application
    Filed: September 26, 2001
    Publication date: November 28, 2002
    Inventors: Kazuya Asano, Teruhiko Nagatomo, Tomokazu Aoki, Junichi Hashida
  • Publication number: 20020159459
    Abstract: A packet transfer device has a layer 2 switch and performs switching by referring to header information of a 3rd layer and higher layers. Input/output ports receives packets from and transmits packets to other devices connected to the packet transfer device. A header information extracting circuit extracts header information belonging to a 3rd layer (network layer) and higher layers of a network protocol from packets inputted from the respective input/output ports. A table stores header information and control information corresponding to the header information in association with each other. A control information acquiring circuit acquires control information corresponding to the header information extracted by the header information extracting circuit from the table. A processing circuit processes packets based on the control information acquired by the control information acquiring circuit.
    Type: Application
    Filed: February 22, 2002
    Publication date: October 31, 2002
    Applicant: Fujitsu Limited
    Inventors: Teruhiko Nagatomo, Kazuya Asano, Junichi Hashida
  • Publication number: 20020161918
    Abstract: In a packet transmission system including host apparatuses and a router which transfers a packet from host apparatuses in a first host group to host apparatuses in a second host group, each host apparatus in the first host group inserts in a packet an IP address and a link-layer address of a destination host apparatus in the second host group before transmitting the packet. When the router receives the packet, the router determines an output port connected to at least one host apparatus in the second host group including the destination host apparatus, based on the IP address of the destination host apparatus inserted in the packet, and transmits the received packet from the determined output port.
    Type: Application
    Filed: July 25, 2001
    Publication date: October 31, 2002
    Applicant: Fujitsu Limited of Kawasaki, Japan
    Inventors: Kazuya Asano, Teruhiko Nagatomo
  • Patent number: 6196672
    Abstract: A hot-melt type ink jet printer includes a nozzle head for ejecting a hot-melt type ink onto a sheet. The printer has a sheet feed passage defined by, in order from an upstream side in a sheet feeding direction, a sheet supply roller, a preheat platen, a sheet feed roller, a main platen, a cooling platen, discharge roller and a sheet discharge opening. The preheat platen and main platen have preheater and main heater, respectively, and these platen and the cooling platen are supported on a frame. A first suction port is formed between the main platen and the cooling platen and a second suction port is formed between the cooling platen and the frame. A power board and a cooling fan is provided within the frame for cooling the power board. By rotation of the cooling fan, air is introduced from the sheet discharge opening into the frame through the first and second suction ports to also cool the cooling platen and the heating platen.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: March 6, 2001
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Noritsugu Ito, Hiroshi Igarashi, Kazuya Asano, Shogo Suzuki, Shinji Kimura, Takashi Nakata, Naoya Kamimura
  • Patent number: 6161930
    Abstract: Before print is made by letting hot melt ink gush out from the nozzle head, paper is heated rapidly to its required temperature, thus enhancing the ink fixing performance of the print. Relative to paper carrying rollers, a preheat platen with preheater on its back side is located upstream in the carriage passage and a main platen with main heater on its back side is located downstream in the carriage passage. Downstream of the main platen are installed a cooling platen, which is cooled by first and second air intake openings to allow air to pass into the printer, and paper ejecting rollers. The surface temperature of the preheat platen is set higher than that of the main platen so that the temperature required for unprinted paper will be reached rapidly.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: December 19, 2000
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Kazuya Asano
  • Patent number: 6109806
    Abstract: A hot melt ink jet printing device 1 includes guides 27 disposed on a printing surface 11 of a platen 12 at both sides of a print area and guides 28 disposed downstream side of the platen 12 in a sheet feed direction F. Heaters 21, 25 are mounted on an under surface of the platen 12 for applying heat to a recording sheet 7 placed on the printing surface 11. The print head 13 is disposed away from the platen 12 such that a nozzle surface 13a of the print head 13 confront the printing surface 11. The guides 27, 28 effectively prevent the recording sheet 7 from rising off the printing surface 11 toward the print head 13 when the recording sheet 7 is supplied with heat from the heater 21, 25. In this way, the recording sheet 7 is prevented from contacting the nozzle surface 13a.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: August 29, 2000
    Assignee: Brother Kogyo Kabushikik Kaisha
    Inventor: Kazuya Asano
  • Patent number: 6007178
    Abstract: A postage meter includes a printing device for printing a dot-matrix postal indicia on a mailpiece; and a drive train system having a moveable platen for positioning the mailpiece in fixed relationship to the printing device; a priming pump operatively connectable to the printing device for priming the printing device; a gear train; and a motor engaged with the gear train for driving into operation, via the gear train, both the platen and the priming pump. A method for driving components of a postage meter, includes energizing a motor in a first direction for driving, via a gear train, a platen into a fixed position relative to a printhead used for printing a postage indicia; driving, via the gear train, a priming pump into operation for priming the printhead; and during driving of the priming pump utilizing the gear train for effectuating moving of a wiper blade into a position for wiping the printhead.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: December 28, 1999
    Assignee: Pitney Bowes Inc.
    Inventor: Kazuya Asano
  • Patent number: 5680784
    Abstract: A method of controlling a form of a strip in a rolling mill. A plurality of paired data of manipulation amounts of form control actuators, and amounts of variations in the form of the strip corresponding to the manipulation amounts are prepared, as prototype manipulation examples. Calculation is performed to obtain a degree of similarity between an actual form error representing difference between an actual form of the strip and a target form, and variations in the form of the prototype manipulation examples. Then, actuator manipulation amounts of the prototype manipulation examples are weighted in accordance with calculated degree of the similarity, and the actuators are manipulated based on weighted actuator manipulation amounts.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: October 28, 1997
    Assignee: Kawasaki Steel Corporation
    Inventors: Junichi Tateno, Kazuya Asano, Takayuki Kaji, Masashi Hoshino, Satoshi Tsuzuki, Motoji Shiozumi, Akinobu Kamimaru, Chikara Osaka
  • Patent number: 5660066
    Abstract: An interstand tension controller for a continuous rolling mill having a plurality of rolling stands and provided with a looper between the adjacent rolling stands controls two controlled variables, i.e., the interstand tension of the workpiece and the looping angle of the looper, to adjust the measured interstand tension and the measured looping angle to desired values, has control loops that control the rotating speed of the rolls of the rolling stand and the looping torque or the looping speed of the looper to regulate the interstand tension and the looping angle, estimates disturbances acting on the control loops, the variation of the characteristics of the controlled system and the interference between the control loops, and operates manipulated variables to offset the disturbances.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: August 26, 1997
    Assignee: Kawasaki Steel Corporation
    Inventors: Kazuya Asano, Kazuhiro Yamamoto
  • Patent number: 5393152
    Abstract: A print head is supported on an upper frame of a printing device and a platen and a feeding device are supported on a lower frame. Further, a circuit substrate, a print head moving motor, and a feeding device driving motor are also supported on the upper frame. The upper and the lower frame are connected by a connection member around a rotating axis which is substantially orthogonal to the feeding direction of the print medium. The rotating axis is near a side of the platen in order to easily open and shut the upper frame. When a lock arm is released, the upper frame is pushed up by only a small angle through operation of a pre-open lever and is held in a pre-open position. When upper frame is further opened in an opening direction, the upper frame is held in a fully open position by the operation of an open lock lever. When in the fully open state, the exchange of print paper and/or the removal of the jammed paper can be done easily and safely.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: February 28, 1995
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yoshiteru Hattori, Kazuya Asano, Susumu Misu
  • Patent number: 5311924
    Abstract: A method and apparatus is provided for stabilizing the molten metal surface in a mold. The invention is used to improve the quality of the casting slab by modifying a controlling parameter according to the detected slab drawing speed and the actual nozzle flowing characteristics calculated by the measured molten metal surface level and the nozzle opening degree.
    Type: Grant
    Filed: March 18, 1993
    Date of Patent: May 17, 1994
    Assignee: Kawasaki Steel Corporation
    Inventors: Kazuya Asano, Takayuki Kaji, Kazuo Arai, Shuji Tanaka, Michio Ibaraki, Yuki Nabeshima, Hiromitsu Yamanaka, Masaki Takashi, Saburo Moriwaki, Mototatsu Sugizawa, Hiroshi Nomura, Masayuki Onishi