Patents Assigned to Fujitsu
  • Patent number: 8803840
    Abstract: A touch panel includes: a first conductive film divided into regions insulated from each other; a second conductive film facing and located away from the first conductive film; a pair of electrodes provided to the second conductive film, the electrodes facing each other; another pair of electrodes provided to the second conductive film, the electrodes facing each other; and a control unit configured to determine whether the first conductive film contacts with the second conductive film in each region, detect one of an X-coordinate and a Y-coordinate of a point where the first conductive film contacts with the second conductive film by applying a voltage to the pair of electrodes in a case where the first conductive film contacts with the second conductive film, discharge the voltage applied to the pair of electrodes after detecting one of the X-coordinate and the Y-coordinate in each region, and detects the other of the X-coordinate and the Y-coordinate in each region by applying a voltage to the another pair
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Component Limited
    Inventors: Satoshi Sakurai, Kazuyuki Yoshifusa, Daisuke Ichikawa, Masanobu Hayama
  • Patent number: 8805447
    Abstract: A base station includes a received signal power measurement unit that calculates a radio signal power of a radio signal received from a mobile station which is connected by radio connection, a measurement period decision unit that decides a measurement period based on a first index representing a transmission rate of received data transmitted from the mobile station and one of a second index representing a resource assigned to the mobile station and a third index representing an amount of data buffered in the mobile station and to be transmitted, an interference power measurement unit that calculates an interference power over the measurement period, a received signal quality measurement unit that calculates signal quality of the radio signal based on the radio signal power and the interference power and a transmission power decision unit that decides a transmission power control value to the mobile station based on the signal quality.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Limited
    Inventor: Mamoru Takahashi
  • Patent number: 8805207
    Abstract: A distortion compensator, an optical receiver and a transmission system including an operation selectively compensating for linear waveform distortion exerted on an optical signal via a plurality of distortion compensators and compensating for nonlinear waveform distortion exerted on the optical signal using nonlinear distortion compensators.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Limited
    Inventors: Takahito Tanimura, Takeshi Hoshida, Hisao Nakashima, Shoichiro Oda
  • Patent number: 8805665
    Abstract: For each input variable value set, an indicator value associated with dispersion of actually measured output variable values is calculated from data including, for each input variable value set, the actually measured output variable values. Then, a processing to cause a simulator to compute a calculated output variable value for each combination of a candidate input parameter value sets and one input variable value set, and a processing to calculate, for each candidate input parameter value set, an entire error obtained by taking into consideration, with respect to all input variable value sets, partial errors obtained respectively by evaluating, by the indicator value for a corresponding input variable value set, difference between the calculated and actually measured output variable values for the corresponding input variable value set are repeated to identify the candidate input parameter value set making the entire error minimum.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Limited
    Inventor: Kazuhiro Matsumoto
  • Patent number: 8800142
    Abstract: A semiconductor chip mounting layer of a package substrate unit includes an insulation layer, a conductive seed metal layer formed on the top surface of the insulation layer, conductive pads formed on the top surface of the conductive seed metal layer, metal posts formed substantially in the central portion on the top surface of the conductive pads, and a solder resist layer that is formed to surround the conductive pads and the metal posts.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Limited
    Inventors: Hnin Nway San Nang, Kazuya Arai, Kei Fukui, Shinpei Ikegami, Yasuhito Takahashi, Hideaki Yoshimura, Hitoshi Suzuki
  • Patent number: 8803923
    Abstract: A display apparatus includes: an acceptance unit that accepts a first input image and a second input image; a light control unit that outputs a display image; a plurality of light sources that irradiate the light control unit; a light emitting amount computation unit that computes a first light emitting amount based on a luminance of the first input image and computes a tentative light emitting amount based on a luminance of the second input image, on a basis of a comparison result between the first light emitting amount and the tentative light emitting amount, imposes a limit on a change range from the first light emitting amount to a second light emitting amount, and decide the second light emitting amount; and a light source control unit that controls each of the plurality of light sources based on the second light emitting amount.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Limited
    Inventor: Masayoshi Shimizu
  • Patent number: 8805194
    Abstract: An optical transmission device includes a signal generator configured to generate a first signal corresponding to an amount of residual chromatic dispersion that occurs in a light signal transmitted from the optical transmission device to a downstream device, and a superimposer configured to superimpose the first signal on the light signal transmitted from the optical transmission device and transmit the light signal superimposed by the first signal to the downstream device.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Limited
    Inventor: Takashi Toyomaki
  • Patent number: 8804543
    Abstract: A load test method for a network system in which a plurality of node devices exchange packets via a first switch device by way of a second switch device, includes transmitting a plurality of first packets to the first switch device by a first node device, the plurality of first packets being addressed to the first node device via the second switch device, transmitting a plurality of second packets to the first switch device by a second node device, the plurality of second packets being addressed to the first node device via the first switch device, storing the first packets and the second packets in a queue buffer and thereafter transferring the first packets and the second packets to the first node device by the first switch device, and monitoring state information based on the number of packets waiting to be exchanged in the second switch device.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Limited
    Inventor: Kazunari Gotou
  • Publication number: 20140220997
    Abstract: A radio communication system includes a first base station that communicates with a mobile station and a second base station. The first base station includes a transmitting unit. The transmitting unit transmits a result of resource assignment relative to the mobile station to the second base station. The second base station includes a receiving unit and a controller. The receiving unit receives the result of the resource assignment performed by the first base station and transmitted by the transmitting unit. The controller identifies a resource suffering interference from the mobile station among resources assignable by the second base station based on the result of the resource assignment and stops assignment of the resource relative to the mobile station.
    Type: Application
    Filed: April 10, 2014
    Publication date: August 7, 2014
    Applicant: FUJITSU LIMITED
    Inventor: Takato EZAKI
  • Publication number: 20140219699
    Abstract: A printer apparatus includes a printing part including a platen roller and a print head for printing objects onto a recording sheet, and a feeding part for feeding the recording sheet to the printing part. The feeding part includes a first feed port and a second feed port for feeding the recording sheet, a first roller for conveying a first recording sheet fed through the first feed port, a second roller for conveying a second recording sheet fed through the second feed port, a delivery port for feeding the recording sheet conveyed by the first roller and the second roller, a tension member having elasticity, a third roller rotatably connected to the tension member and being pressed toward the first roller by the tension member, and a fourth roller rotatably connected to the tension member and being pressed toward the second roller by the tension member.
    Type: Application
    Filed: January 28, 2014
    Publication date: August 7, 2014
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Tetsuhiro Ishikawa, Sumio Watanabe, Yukihiro Mori, Masahiro Tsuchiya
  • Publication number: 20140222771
    Abstract: A management device includes a memory and a processor coupled to the memory. The processor executes a process including: acquiring, from a plurality of devices, group information indicating a management group used to manage the devices and setting information indicating a setting item and setting content that are set in each of the devices; extracting a setting item corresponding to setting content that is common to devices included in a same management group indicated by the acquired group information; and creating, for the extracted setting item, a rule indicating that a common setting content is set to the devices included in the same management group.
    Type: Application
    Filed: April 10, 2014
    Publication date: August 7, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Atsuji SEKIGUCHI, Kuniaki Shimada, Yuji Wada, Akiko Matsumoto, Akio Oba, Ryouji Yoshimi
  • Publication number: 20140223097
    Abstract: A storage system has a plurality of control modules for controlling a plurality of storage devices, which make mounting easier with maintaining low latency response even if the number of control modules increases. A plurality of storage devices are connected to the second interface of each control module using back end routers, so that redundancy for all the control modules to access all the storage devices is maintained. Also the control modules and the first switch units are connected by a serial bus, which has a small number of signals, constituting the interface by using the back panel. By this, mounting on the printed circuit board becomes possible.
    Type: Application
    Filed: April 9, 2014
    Publication date: August 7, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Shigeyoshi OHARA, Kazunori MASUYAMA
  • Publication number: 20140222229
    Abstract: A power control apparatus includes a processor configured to collect first information related to operation of a performing unit configured to perform data processing and information related to operation of a bus configured to transfer data; determine an operating frequency and an operating voltage for the performing unit, based on the collected information; estimate based on the collected information, a period elapsing until the performing unit suspends operation and a period elapsing until the bus suspends operation; derive a discriminant that obtains a difference of total power consumption and power consumption pre-switching; and execute a switching of an operating frequency and an operating voltage of the performing unit, based on a value of the discriminant.
    Type: Application
    Filed: April 9, 2014
    Publication date: August 7, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Yuta TERANISHI, Koichiro YAMASHITA, Takahisa SUZUKI, Hiromasa YAMAUCHI, Koji KURIHARA, Toshiya OTOMO
  • Publication number: 20140219662
    Abstract: A signal detection circuit includes: a first optical filter configured to filter an optical signal carrying a frequency modulated signal with a first transmission band; a second optical filter configured to filter the optical signal with a second transmission band; a first photo detector configured to convert the output light of the first optical filter into a first electrical signal; a second photo detector configured to convert the output light of the second optical filter into a second electrical signal; a difference circuit configured to output a signal representing a difference between the first electrical signal and the second electrical signal; and a detector configured to detect the frequency modulated signal based on the output signal of the difference circuit.
    Type: Application
    Filed: December 16, 2013
    Publication date: August 7, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Kazuo HIRONISHI, Shoichiro ODA, Takeshi HOSHIDA
  • Publication number: 20140218854
    Abstract: A tilt mechanism for an information device including a body and a display is capable of changing a tilt angle of the display after the display is tilted on the body by pulling up an upper end of the display laid on the body and sliding a lower end of the display over the body. One of two links is rotatably connected to the display, the other of the links to the body, the two links engage each other. Until a roller provided at the lower end of the display engages a support provided on the body, the two links firmly engage each other so as to maintain the total length of the two links, and after the roller engages the support, the two kinks are capable to change the tilt angle by changing the total length of the two links.
    Type: Application
    Filed: January 16, 2014
    Publication date: August 7, 2014
    Applicant: FUJITSU LIMITED
    Inventor: Nobuhiko ONDA
  • Publication number: 20140222905
    Abstract: Upon reception of a connection request from a client terminal, a control device couples a providing server that provides a virtual desktop environment to the client terminal. The control device then causes the client terminal to transfer a file maintained in the client terminal to the providing server to which the client terminal is coupled, according to correspondence information in which path information in the client terminal is associated with path information in the virtual desktop environment for each file used by the client terminal for executing an application in the virtual desktop environment. This facilitates file transfer on the client terminal side for transferring the file to a server in the virtual desktop environment.
    Type: Application
    Filed: April 11, 2014
    Publication date: August 7, 2014
    Applicant: FUJITSU LIMITED
    Inventor: Kouitirou TAKAHASI
  • Publication number: 20140223367
    Abstract: A method of controlling an operation menu executed by a computer, the method includes: extracting a plurality of operation objects located within a certain range from a cursor position on a display screen; and on the basis of a distance between each of the plurality of operation objects and a corresponding one of a plurality of items displayed as the operation menu, setting corresponding relationships between the plurality of operation objects and the plurality of items.
    Type: Application
    Filed: December 6, 2013
    Publication date: August 7, 2014
    Applicant: FUJITSU LIMITED
    Inventor: Koki Hatada
  • Publication number: 20140217567
    Abstract: A semiconductor package includes a semiconductor chip, a protruding pillar electrode provided on the semiconductor chip, and resin covering the semiconductor chip and the pillar electrode. The resin has a concave part and exposes a front edge portion of the pillar electrode from the resin at the bottom face of the concave part. The front edge portion of the pillar electrode is exposed from the concave part of the resin, which makes it possible to suppress increase in the height of the pillar electrode and to form the pillar electrodes having fine patterns or a narrow pitch.
    Type: Application
    Filed: January 17, 2014
    Publication date: August 7, 2014
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventor: Koichi Nakamura
  • Publication number: 20140221050
    Abstract: A disclosed portable apparatus includes: a first touch switch that is installed on a first surface of a housing of the portable apparatus; a second touch switch that is installed on a second surface of the housing, which is opposite to the first surface; and a determination unit configured to determine whether or not the first surface and the second surface are simultaneously touched, based on outputs of the first touch switch and the second touch switch. The portable apparatus may further include a first controller configured to release a lock function upon determining that the first surface and the second surface are simultaneously touched, and to activate the lock function upon determining that the first surface and the second surface are not simultaneously touched.
    Type: Application
    Filed: October 31, 2013
    Publication date: August 7, 2014
    Applicant: Fujitsu Mobile Communications Limited
    Inventor: Masataka KATO
  • Publication number: 20140219209
    Abstract: A node device includes a transmitter, processor, and a receiver. The receiver receives a packet from an adjacent node device. The processor generates a cluster list and a first hello packet. The cluster list records device identification information of a node device included in a cluster. The cluster is a group of node devices for which route information is stored. The first hello packet reports the route information with cluster identification information of the cluster. The transmitter broadcasts the first hello packet. Upon receipt of, from a free-node device that does not belong to a cluster, a second hello packet that includes information that associates the cluster identification information with device identification information of the free-node device, the processor adds the device identification information of the free-node device to the cluster list until a number of node devices recorded in the cluster list reaches a threshold.
    Type: Application
    Filed: April 7, 2014
    Publication date: August 7, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Tatsuya Soneda, Tadashige IWAO, Tetsu Yamamoto, NORIHITO NISHIMOTO