Patents Assigned to Fujitsu Limted
  • Patent number: 10367665
    Abstract: A radio analyzer includes a memory configured to store a first reference signal, and a processor coupled to the memory and configured to calculate a first correlation value between a received wave and a non-modulated wave, calculate a second correlation value between the received wave and the first reference signal in a target section of the received wave, the first correlation value being smaller than a first threshold value in the target section, and detect a modulated wave from the received wave based on the second correlation value.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: July 30, 2019
    Assignee: FUJITSU LIMTED
    Inventors: Tatsuya Kikuzuki, Teruhisa Ninomiya
  • Publication number: 20180173172
    Abstract: A disclosed policy introduced effect prediction apparatus includes a memory storing a set of instructions of a policy introduced effect prediction program, and processors programed to execute the instructions to perform a policy introduced effect prediction process. The policy introduced effect prediction process includes calculating at least one calculation model based on first difference data calculated based on time series data of an objective variable and second difference data calculated based on time series data of an explanatory variable, calculating a difference amount of the objective variable by inputting a difference amount of the explanatory variable for introducing a policy into the calculated calculation model, and calculating a predicted value of the objective variable in response to introduction of the policy by adding the calculated difference amount of the objective variable to a predicted value of the objective variable in the absence of the introduction of the policy.
    Type: Application
    Filed: December 14, 2017
    Publication date: June 21, 2018
    Applicant: FUJITSU LIMTED
    Inventor: Katsuhito Nakazawa
  • Patent number: 9153278
    Abstract: A storage system includes a storage apparatus, a control apparatus, and a host apparatus. The storage apparatus includes a recording medium. The control apparatus includes a detection unit and a control unit. The detection unit detects whether a recording medium loaded in the storage apparatus is a stand-alone-only recording medium that is used in a stand-alone mode. When the recording medium is the stand-alone-only recording medium, the control unit registers a physical volume of the stand-alone-only recording medium as a logical volume and automatically switches the operation mode of the control apparatus to the stand-alone mode.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: October 6, 2015
    Assignee: FUJITSU LIMTED
    Inventors: Yukio Taniyama, Hiroaki Nishijo, Kazuki Sasaki, Kenji Uchiyama, Yusuke Inai
  • Patent number: 9002360
    Abstract: There is provided a reception quality measurement method that measures reception quality of a measurement target cell with a mobile terminal apparatus. The method includes performing reception quality measurements in a certain bandwidth with respect to each of a plurality of frequencies in a frequency band of the measurement target cell when the frequency band of the measurement target cell and a frequency band of a neighboring cell overlap with each other, and averaging results of the reception quality measurements at the plurality of frequencies to obtain an averaged value as the reception quality of the measurement target cell.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: April 7, 2015
    Assignee: Fujitsu Limted
    Inventor: Satoshi Mikami
  • Patent number: 8930485
    Abstract: By generating second data transfer status managing information for managing a data transfer status between the first storing unit and a third storing unit provided in the second storage apparatus, and third data transfer status managing information for managing data transfer status between the second storing unit and a fourth storing unit provided in the second storage apparatus based on the first data transfer status managing information; and transferring data between the first storing unit and the third storing unit based on the second data transfer status managing information, transferring data between the second storing unit and the fourth storing unit based on the third data transfer status managing information, and transferring the first data transfer status managing information, the data transfer status between multiple storing units in a migrating storage apparatus may be reproduced in another migrated storage apparatus.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: January 6, 2015
    Assignee: Fujitsu Limted
    Inventor: Akihiro Ueda
  • Patent number: 8634454
    Abstract: A receiver circuit includes: an equalization circuit that equalizes a first signal to obtain a second signal, and adjusts a characteristic of an equalization in accordance with an error between the second signal and a third signal; and a first offset adjustment circuit that adjusts an offset of the first signal in accordance with an error signal indicating the error.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: January 21, 2014
    Assignee: Fujitsu Limted
    Inventors: Masaya Kibune, Hirotaka Tamura
  • Patent number: 8396500
    Abstract: A connection destination base station determination device is disclosed that includes: a storage part configured to store information indicating a radio base station that has transmitted a signal received with intensity at or above a certain level in a mobile terminal, and information indicating the amount of available resources in the radio base station; a selection part configured to select, of radio base stations having the amount of available resources greater than or equal to the amount of resources requested by the mobile terminal, a radio base station different from a radio base station having the largest amount of available resources as a connection destination radio base station; and a notification part configured to notify the selected radio base station that the mobile terminal is to be connected thereto.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: March 12, 2013
    Assignee: Fujitsu Limted
    Inventors: Hiroshi Fujita, Yoshiharu Tajima, Atsuya Tanaka
  • Patent number: 8379690
    Abstract: A wireless receiver receives a signal obtained by multiplexing a plurality of signals that include a synchronization signal that is spread using a non-orthogonal code not orthogonal to a code for spreading other signals other than the synchronization signal. Then, in a case when the signals other than the synchronization signal are the target signals for decoding, the wireless receiver performs despreading with respect to the received signal using the synchronization signal and estimates the signal amplitude of the non-orthogonal code. Subsequently, the wireless receiver eliminates the spread synchronization signal from the received signal using the estimated signal amplitude of the non-orthogonal code and using the synchronization signal. Eventually, the wireless receiver performs despreading and demodulation with respect to the signal having the spread synchronization signal eliminated therefrom and decodes the target signals for decoding.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: February 19, 2013
    Assignee: Fujitsu Limted
    Inventor: Tsuyoshi Hasegawa
  • Publication number: 20130005375
    Abstract: A method for implementing coordinated resource allocations includes establishing one or more wireless connections using a first channel with one or more endpoints via at least one remote transceiver. The method further includes determining a schedule that assigns a first number of resource blocks to each endpoint of the one or more endpoints. The method additionally includes receiving one or more neighboring transceiver schedules determined by one or more neighboring base stations. Each neighboring transceiver schedule indicating a different number of resource blocks assigned to each neighboring remote transceiver connected to the respective neighboring base station. The method also includes determining one or more time slots and subcarriers within the first channel to assign to each resource block for each endpoint of the one or more endpoints based on the schedule and the neighboring transceiver schedules.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 3, 2013
    Applicant: Fujitsu Limted
    Inventor: Wei-Peng Chen
  • Publication number: 20120320427
    Abstract: An image processing method generally includes: obtaining a vanishing point on a curved surface in a two-dimension image; extracting all the straight line segments between a top contour line and a bottom contour line of the curved surface by the vanishing point; removing a perspective distortion to get parallel straight line segments; obtaining the lengths of the straight line segments, obtaining the true width of each of the straight line segments in a three-dimension space and the depth increment of the straight line segments according to the lengths; obtaining the expanded width of each straight line segment according to the true width and the depth increment; obtaining the total expanded width of the curved surface to transform it into a flat surface; transforming image contents on the curved surface onto the flat surface.
    Type: Application
    Filed: May 15, 2012
    Publication date: December 20, 2012
    Applicant: FUJITSU LIMTED
    Inventors: Danian ZHENG, Jun SUN, Satoshi NAOI
  • Patent number: 8320335
    Abstract: A wireless communication system is disclosed including a MIMO wireless communication apparatus that can communicate through multiple antennas and a non-MIMO wireless communication apparatus that can communicate through a single antenna or multiple antennas. The MIMO wireless communication apparatus includes a communication unit configured to transmit and receive control information divided into a second control information containing information related to the demodulation and decoding of traffic channel and a first control information containing information related to the MIMO separation of the second control information.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: November 27, 2012
    Assignee: Fujitsu Limted
    Inventors: Takashi Dateki, Tetsuya Yano
  • Patent number: 8306369
    Abstract: An optical hybrid circuit includes a multimode interference coupler; a first 2:2 optical coupler; a second 2:2 optical coupler; a third 2:2 optical coupler; and a phase controlling region. The first 2:2 optical coupler, the second 2:2 optical coupler, and the third 2:2 optical coupler are coupled to one of the pair of first output channels, the pair of second output channels, the pair of third output channels, and the pair of fourth output channels of the multimode interference coupler. The phase controlling region is provided in one or both of each pair of at least two pairs of output channels from among three pairs of output channels to which the first 2:2 optical coupler, the second 2:2 optical coupler, and the third 2:2 optical coupler are coupled, respectively.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: November 6, 2012
    Assignee: Fujitsu Limted
    Inventor: Seok Hwan Jeong
  • Publication number: 20120070084
    Abstract: An image processing apparatus calculates luminances for pixels that make up an image and calculates the average luminance of the calculated luminances. From among pixels of the calculated luminances, the image processing apparatus identifies each of the luminances that has a value equal to or greater than a distinguishing value and calculates a bright-portion ratio of the identified luminance in the image. The image processing apparatus creates a luminance histogram and calculates a distribution value indicating a distribution level of the luminance distribution in a region corresponding to a luminance having a value equal to or greater than the distinguishing value in the created luminance histogram. The image processing apparatus determines whether the average luminance is equal to or less than a first threshold, whether the bright-portion ratio is equal to or greater than a second threshold, and whether the distribution value is equal to or greater than a third threshold.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 22, 2012
    Applicant: FUJITSU LIMTED
    Inventor: Shanshan YU
  • Patent number: 8068744
    Abstract: In an optical transmitter comprising a directly modulated laser and a wavelength filter provided on a post-stage of the directly modulated laser, the wavelength filter has a modulated light input port for inputting modulated light output from the directly modulated laser, a filter transmitted light output port for outputting light having a wavelength included in a filter transmission band among the modulated light as filter transmitted light, and a filter cutoff light output port provided separately from the modulated light input port and the filter transmitted light output port and outputting light having a wavelength included in a filter cutoff band among the modulated light as filter cutoff light, and the peak of the filter transmission band is set on a shorter-wave side from the peak of the spectrum of modulated light output from the directly modulated laser.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: November 29, 2011
    Assignee: Fujitsu Limted
    Inventors: Suguru Akiyama, Tsuyoshi Yamamoto
  • Publication number: 20110254608
    Abstract: A level control circuit that generates output signal for level control includes: a control information storage that stores control information corresponding to a signal level, a control information circuit that outputs the output signal for level control corresponding to the signal level of a first input signal based on the control information stored in the control information storage; and an information update circuit that updates the control information of the control information storage according to the signal level of a second input signal.
    Type: Application
    Filed: April 14, 2011
    Publication date: October 20, 2011
    Applicant: FUJITSU LIMTED
    Inventors: Yutaka KAI, Setsuo YOSHIDA, Taku YOSHIDA, Keisuke HARADA
  • Publication number: 20110239209
    Abstract: A system for performing remote maintenance an electronic network serving a plurality of clients may comprise a central server, a first client system hosting first virtual machine, and a receiver associated with the first client system. The central server may broadcast a list of updated software modules available for delivery to the plurality of client systems. The first client system may including a plurality of nodes, each one of the plurality of processing resources having a respective set of processing instructions stored on an respective associated computer readable memory. The receiver may be operable to receive the list broadcast by the central server. The first virtual machine may be operable to determine whether to request any of the updated software modules on the received list based at least in part on the identity of the plurality of nodes of the first client system. The receiver may be operable to receive any updated software module requested by the first virtual machine.
    Type: Application
    Filed: September 10, 2010
    Publication date: September 29, 2011
    Applicant: Fujitsu Limted
    Inventors: Seigo Kotani, Masato Suzuki
  • Patent number: 7974448
    Abstract: A personal authentication system using biometrics information, which identifies or authenticates an individual by verifying to-be-verified biometrics characteristic data against previously registered biometrics characteristic data. The system includes a biometrics information inputting section having a function to acquire the to-be-verified biometrics information; a biometrics information converting section converting said to-be-verified biometrics information, acquired through said biometrics information inputting section, into a state to be acquired on a predetermined acquisition condition, said predetermined acquisition condition being a same condition under which the registered biometric information was acquired; and a biometrics characteristic data extracting section extracting to-be-verified biometrics characteristics data from the to-be-verified biometrics information obtained by the conversion in said biometrics information converting section.
    Type: Grant
    Filed: January 23, 2006
    Date of Patent: July 5, 2011
    Assignee: Fujitsu Limted
    Inventors: Takashi Shinzaki, Yusaku Fujii
  • Publication number: 20100134162
    Abstract: A clock signal generation apparatus includes a clock signal generation circuit generating a plurality of clock signals, and a self-test circuit measuring a phase difference of one pair of clock signals. The self-test circuit includes a clock signal selection circuit selecting the pair of clock signals among the plurality of clock signals, a phase detection circuit generating a phase difference pulse signal, a test signal generation circuit generating a test signal having a frequency which is lower than the phase difference pulse signal, and a counter circuit counting the pulse number of the test signal.
    Type: Application
    Filed: October 27, 2009
    Publication date: June 3, 2010
    Applicant: FUJITSU LIMTED
    Inventor: Masafumi KONDOU
  • Publication number: 20100124529
    Abstract: A method of manufacturing carbon cylindrical structures, as represented by carbon nanotubes, by growing them on a substrate using a chemical vapor deposition (CVD) method, comprising the steps of implanting metal ions to the substrate surface and then growing the carbon cylindrical structures using the metal ions as a catalyst. A method of manufacturing carbon nanotubes comprising a step of using nano-carbon material as seed material for growing carbon nanotubes is also disclosed. A biopolymer detection device comprising vibration inducing part for inducing vibration, binding part capable of resonating with the vibration induced by the vibration inducing part and capable of binding or interacting with a target biopolymer, and detection part for detecting whether or not the binding part have bound or interacted with the target biopolymer, is also disclosed.
    Type: Application
    Filed: June 19, 2009
    Publication date: May 20, 2010
    Applicant: FUJITSU LIMTED
    Inventors: Yuji Awano, Akio Kawabata, Shozo Fujita
  • Publication number: 20100080397
    Abstract: A decoded sound analysis unit (104) calculates, regarding the frequency-region stereo signals L(b) and R(b) decoded by the PS decoding unit (103), a second degree of similarity (109) and a second intensity difference (110) from the decoded sound signals. A spectrum correction unit (105) detects a distortion added by the parametric-stereo conversion by comparing the second degree of similarity (109) and the second intensity difference (110) calculated at the decoding side with the first degree of similarity (107) and the first intensity difference (108) calculated and transmitted from the encoding side, and corrects the spectrum of the frequency-region stereo decoded signals L(b) and R(b).
    Type: Application
    Filed: September 21, 2009
    Publication date: April 1, 2010
    Applicant: FUJITSU LIMTED
    Inventors: Masanao Suzuki, Miyuki Shirakawa, Yoshiteru Tsuchinaga