Patents by Inventor Takashi Yoshikawa

Takashi Yoshikawa 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: 9639489
    Abstract: An I/O device sharing system characterized by comprising: an I/O device (50) shared by a plurality of hosts (20-1 to 20-N); a system manager (10) which sets the I/O device (50); a virtual bridge (40) which virtualizes the I/O device (50); and a network (3) which connects the I/O device (50), the system manager (10), the plurality of hosts (20-1 to 20-N) and the virtual bridge (40) to each other, wherein the virtual bridge (40) includes a connection virtualization unit (41) by which it is detected that an address setting of a plurality of virtual functions provided in the I/O device (50) that is set by the system manager (10) is performed, the virtual function is enabled, or both of them are performed and each host is permitted to access each virtual function.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: May 2, 2017
    Assignee: NEC CORPORATION
    Inventors: Jun Suzuki, Youichi Hidaka, Masato Yasuda, Takashi Yoshikawa, Junichi Higuchi
  • Publication number: 20170087839
    Abstract: A liquid ejection apparatus is disclosed. One apparatus includes a piezoelectric element. The piezoelectric element includes an upper electrode and a lower electrode. The lower electrode has a partial overlapping portion and a non-overlapping portion. The partial overlapping portion at least partially overlaps the pressure chamber. The partial overlapping portion of the lower electrode has two ends in the transverse direction. The upper electrode has two ends in the transverse direction. A distance from the center of the pressure chamber in the transverse direction to one of the two ends of the upper electrode in the transverse direction is smaller than a distance from the center of the pressure chamber in the transverse direction to a corresponding one of the two ends of the partial overlapping portion in the transverse direction.
    Type: Application
    Filed: September 8, 2016
    Publication date: March 30, 2017
    Inventors: Taiki TANAKA, Takashi YOSHIKAWA
  • Publication number: 20160246239
    Abstract: A print control apparatus includes a generating unit that generates clear-toner plane data based on gloss-control plane data, which contains a gloss control value for specifying a type of a surface effect being a visual or a tactile effect applied to the recording medium and for specifying a region to which the surface effect is applied in the recording medium, and clear plane data, which contains a density value for specifying a transparent image other than the surface effect; and an outputting unit that outputs the clear-toner plane data. When a region where the gloss control value is specified in the gloss-control plane data and a region where the density value is specified in the clear plane data overlap each other, the generating unit sets a value of the clear-toner plane data to the gloss control value or the density value, based on a predetermined condition.
    Type: Application
    Filed: May 3, 2016
    Publication date: August 25, 2016
    Inventors: Takashi YOSHIKAWA, Hiroaki SUZUKI, Hiroo KITAGAWA
  • Publication number: 20160227072
    Abstract: An image processing apparatus serving as a master device and a plurality of local image processing apparatus serving as local devices are connected to one another via a network, and each of the devices includes an authentication information storage unit and an authentication unit. The master device stores, as master authentication information, authentication information necessary for an authentication on each of users who are able to use each of the devices, for each of the devices, and allows editing of the master authentication information. When the authentication information on the local device in the master authentication information is edited, the edited authentication information is transmitted to the local device, and the authentication information stored in local device is updated. When a user login operation is performed on the local device, an authentication is performed by using the authentication information in the local device.
    Type: Application
    Filed: September 2, 2014
    Publication date: August 4, 2016
    Inventors: Takashi YOSHIKAWA, Takuya INOUE, Takahiko UNO
  • Publication number: 20160170398
    Abstract: A PLC compares previously acquired device data with currently acquired device data when collecting device data on a control target device over three or more times within one polling time, and stores changed device data as changed data when they are different from each other. When transmitting the changed data to a PC in each polling, the PLC compares the changed data with collected device data. When the total amount of changed data is equal to or larger than the total amount of collected device data, the PLC restores collected device data by using the changed data and transmits the restored device data to the PC, and, when the total amount of changed data is smaller than the total amount of collected device data, the PLC transmits the changed data to the PC.
    Type: Application
    Filed: March 17, 2014
    Publication date: June 16, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventor: Takashi YOSHIKAWA
  • Patent number: 9354582
    Abstract: A print control apparatus includes a generating unit that generates clear-toner plane data based on gloss-control plane data, which contains a gloss control value for specifying a type of a surface effect being a visual or a tactile effect applied to the recording medium and for specifying a region to which the surface effect is applied in the recording medium, and clear plane data, which contains a density value for specifying a transparent image other than the surface effect; and an outputting unit that outputs the clear-toner plane data. When a region where the gloss control value is specified in the gloss-control plane data and a region where the density value is specified in the clear plane data overlap each other, the generating unit sets a value of the clear-toner plane data to the gloss control value or the density value, based on a predetermined condition.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: May 31, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takashi Yoshikawa, Hiroaki Suzuki, Hiroo Kitagawa
  • Patent number: 9280498
    Abstract: A CPU 80 controls data transfer from a first device to a second device in a kernel mode. A main memory 90 stores data to be transferred from the first device to the second device. The CPU 80 has: a first device control means 81 which controls the first device; a second device control means which controls the second device; and a data transfer control means 83 which makes a read instruction which instructs the first device control means 81 to store data read from the first device in the main memory 3, and makes a write instruction which instructs the second device control means 82 to write the data stored in the main memory 3 in the second device.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: March 8, 2016
    Assignee: NEC CORPORATION
    Inventors: Jun Suzuki, Masahiko Takahashi, Youichi Hidaka, Teruyuki Baba, Takashi Yoshikawa
  • Publication number: 20160033665
    Abstract: A technique facilitates seismic wave detection with a seismic receiver. The seismic receiver has a tool body, a vibrationally isolated sensor package mounted in the tool body, and a plurality of contact shoes. The contact shoes are mounted around the sensor package in a distribution which enables three-point contact with a surrounding wellbore wall regardless of the azimuthal orientation of the sensor package.
    Type: Application
    Filed: July 22, 2015
    Publication date: February 4, 2016
    Inventors: Toru Ikegami, Ryo Imai, Takashi Yoshikawa
  • Patent number: 9178665
    Abstract: Any packet loss is detected very quickly by means of only a series of sequence number in a multi-path environment where a transmitter and a receiver are connected to each other by way of a plurality of networks when no inversion of sequence arises in any of the networks. A communication apparatus includes a plurality of sequence buffers arranged at each network to accumulate packets until a sequence acknowledgement and an absence detecting section adapted to determine the occurrence of an absence of a packet when one or more packets are accumulated in all the sequence buffers. With this arrangement, the absence detecting section of the receiver monitors the packets staying in the sequence guaranteeing buffer arranged in each of the network, paying attention to the characteristic that packets are stored in the sequence buffers of all the networks when a packet loss takes place.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: November 3, 2015
    Assignee: NEC CORPORATION
    Inventors: Nobuyuki Enomoto, Hideyuki Shimonishi, Junichi Higuchi, Youichi Hidaka, Jun Suzuki, Takashi Yoshikawa
  • Publication number: 20150104210
    Abstract: A print control apparatus includes a generating unit that generates clear-toner plane data based on gloss-control plane data, which contains a gloss control value for specifying a type of a surface effect being a visual or a tactile effect applied to the recording medium and for specifying a region to which the surface effect is applied in the recording medium, and clear plane data, which contains a density value for specifying a transparent image other than the surface effect; and an outputting unit that outputs the clear-toner plane data. When a region where the gloss control value is specified in the gloss-control plane data and a region where the density value is specified in the clear plane data overlap each other, the generating unit sets a value of the clear-toner plane data to the gloss control value or the density value, based on a predetermined condition.
    Type: Application
    Filed: December 19, 2014
    Publication date: April 16, 2015
    Inventors: Takashi Yoshikawa, Hiroaki SUZUKI, Hiroo KITAGAWA
  • Publication number: 20150095518
    Abstract: An I/O device sharing system characterized by comprising: an I/O device (50) shared by a plurality of hosts (20-1 to 20-N); a system manager (10) which sets the I/O device (50); a virtual bridge (40) which virtualizes the I/O device (50); and a network (3) which connects the I/O device (50), the system manager (10), the plurality of hosts (20-1 to 20-N) and the virtual bridge (40) to each other, wherein the virtual bridge (40) includes a connection virtualization unit (41) by which it is detected that an address setting of a plurality of virtual functions provided in the I/O device (50) that is set by the system manager (10) is performed, the virtual function is enabled, or both of them are performed and each host is permitted to access each virtual function.
    Type: Application
    Filed: April 3, 2013
    Publication date: April 2, 2015
    Inventors: Jun Suzuki, Youichi Hidaka, Masato Yasuda, Takashi Yoshikawa, Junichi Higuchi
  • Patent number: 8934827
    Abstract: A print control apparatus includes a generating unit that generates clear-toner plane data based on gloss-control plane data, which contains a gloss control value for specifying a type of a surface effect being a visual or a tactile effect applied to the recording medium and for specifying a region to which the surface effect is applied in the recording medium, and clear plane data, which contains a density value for specifying a transparent image other than the surface effect; and an outputting unit that outputs the clear-toner plane data. When a region where the gloss control value is specified in the gloss-control plane data and a region where the density value is specified in the clear plane data overlap each other, the generating unit sets a value of the clear-toner plane data to the gloss control value or the density value, based on a predetermined condition.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: January 13, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Takashi Yoshikawa, Hiroaki Suzuki, Hiroo Kitagawa
  • Publication number: 20140379994
    Abstract: A local-memory side data transfer unit increments the number of addresses, reads out data from a local memory, and stores the data into a cache memory of a remote-memory side data transfer unit. For preventing data mismatching with the local memory from being stored into the cache memory, a cache clearing operation is executed in units of an elapse of a round trip time period for data transfer between the local memory and the remote memory. Alternatively, the cache clearing operation is executed upon receipt of a signal notifying data transfer of data stored at a specified address.
    Type: Application
    Filed: September 5, 2014
    Publication date: December 25, 2014
    Applicant: NEC CORPORATION
    Inventors: Takashi YOSHIKAWA, Jun Suzuki, Youichi Hidaka, Junichi Higuchi, Atsushi Iwata
  • Patent number: 8868814
    Abstract: Fault tolerance is improved, a functional limitation at the time of start-up of an I/O system is avoided, and a start-up time is shortened. A downstream PCI Express bridge sets a PCI Express device connected to the downstream PCI Express bridge itself, among a plurality of single root-compatible PCI Express devices shared by a plurality of root complexes connected to a plurality of upstream PCI Express bridges that exchange data with the downstream PC Express bridge itself through a network, controls and monitors a state of a physical link with the PCI Express device connected to the downstream PCI Express bridge itself, and performs monitoring and notification of an error of the PCI Express device connected to the downstream PCI Express bridge itself.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: October 21, 2014
    Assignee: NEC Corporation
    Inventors: Junichi Higuchi, Youichi Hidaka, Jun Suzuki, Takashi Yoshikawa
  • Publication number: 20140281053
    Abstract: A plurality of bridge units which connect a computer, a data movement source I/O device, and a data movement destination I/O device to a network, a memory unit which relays movement of data between the data movement source I/O device and the data movement destination I/O device outside the computer, and an I/O data movement control unit which causes the data movement source I/O device to write data to the memory unit and causes the data movement destination I/O device to read the data from the memory unit are included.
    Type: Application
    Filed: October 26, 2012
    Publication date: September 18, 2014
    Inventors: Jun Suzuki, Youichi Hidaka, Junichi Higuchi, Takashi Yoshikawa, Teruyuki Baba, Yoshikazu Watanabe
  • Publication number: 20140245053
    Abstract: A local computer (20) and a remote I/O device (30) are interconnected on a network (40) through an upstream side bridge (21) and a downstream side bridge (31). The upstream side bridge (21) and the downstream side bridge (31) each include a register (216, 316) for referring to or writing a signal aside from a primary data stream that runs through the network (40) from both sides, and a mechanism (217, 317) for transmitting and receiving the signal aside from the primary data stream inband when referring to or writing the signal in the register (216, 316).
    Type: Application
    Filed: June 13, 2012
    Publication date: August 28, 2014
    Applicant: NEC CORPORATION
    Inventors: Takashi Yoshikawa, Youichi Hidaka, Jun Suzuki, Junichi Higuchi
  • Patent number: 8775712
    Abstract: A detecting unit detects a connection of an external device to a connection port and stores the connection in a bridge state storage unit. This setting is autonomously completed by a device before an initial configuration is started by a host. A data transfer unit receives initial configuration data of a link-connection bridge from the host. Data is transferred to the linked-uplink-connection bridge with reference to the bridge state storage unit, data to a bridge which is not linked up is wasted, or an Unsupported Request is returned to the host to represent the absence of the link-connection bridge.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: July 8, 2014
    Assignee: NEC Corporation
    Inventors: Jun Suzuki, Youichi Hidaka, Takashi Yoshikawa
  • Patent number: 8719615
    Abstract: A semiconductor device performs operation in synchronization with a certain clock signal. The semiconductor device includes a control unit for outputting operation control information, a storage unit for storing data, a first operation unit for performing operation on first data in accordance with first operation control information, and a second operation unit for performing operation on second data in accordance with second operation control information. The first operation unit includes a plurality of operation circuits. The number of logic gates constituting the entire operation circuits is m. The second operation unit includes at least one operation circuit in which the number of logic gates is n (n>m). Each of the total delay of the operation unit or the total delay of the operation unit is set at a value equal to or less than the cycle of the clock signal.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: May 6, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yohei Hasegawa, Yutaka Yamada, Takashi Yoshikawa, Shigehiro Asano
  • Patent number: D746303
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: December 29, 2015
    Assignee: HITACHI, LTD.
    Inventors: Daisuke Nogami, Junko Suzuki, Tomoki Kimura, Tsutomu Fujii, Masahide Ban, Takashi Yoshikawa, Mami Sasaki
  • Patent number: D746335
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: December 29, 2015
    Assignee: HITACHI, LTD.
    Inventors: Daisuke Nogami, Junko Suzuki, Tomoki Kimura, Tsutomu Fujii, Masahide Ban, Takashi Yoshikawa, Mami Sasaki