Patents Assigned to Fujitsu
  • Patent number: 8942619
    Abstract: A relay device includes a receiver, an information obtaining unit, a parameter storage unit, and a parameter setting unit, and relays a packet which is transmitted from a first network to a second network. The receiver receives the packet from the first network. The information obtaining unit obtains data type information for identifying a type of data which is transmitted and received by the packet. The parameter storage unit stores a control parameter which is used for controlling communication quality in the second network, so as to be associated with a type of transfer data indicating data transferred to the second network. The parameter setting unit sets to the packet the control parameter which is associated with transfer data of a same type as data identified by the data type information, and outputs the packet to which the control parameter is set to the second network.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventors: Kiyomi Hasesaka, Takuji Oyama, Keiichiro Yamakawa
  • Patent number: 8941093
    Abstract: A first electrode, an intrinsic first compound semiconductor layer over the first electrode, a second compound semiconductor layer whose band gap is smaller than that of the first compound semiconductor layer on the first compound semiconductor layer, and a second electrode over the second compound semiconductor layer are provided.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventor: Tadahiro Imada
  • Patent number: 8942699
    Abstract: A base station communicates with a mobile station that receives downlink data from the base station and that transmits uplink data to a second base station. The base station includes a data transmitter configured to transmit the downlink data to the mobile station; and a control information receiver configured to receive from the mobile station through a path passing through the second base station, feedback information concerning the downlink data transmitted by the data transmitter.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventor: Junji Otonari
  • Patent number: 8942494
    Abstract: An image processing apparatus including a decoding unit configured to decode encoded stereoscopic dynamic image data containing a consecutive picture pair having a disparity, for each block into which the picture has been divided, and to detect a decoding error, an estimation unit configured to perform first estimation processing of estimating, as a disparity of an error block between an error picture including an error block in which the decoding error has been detected and a paired picture thereof, a disparity of a corresponding-location corresponding to the error block between an approximate picture and a paired picture thereof, and a correction unit configured to correct the decoding error by applying, to the error block, a block located at a position shifted by an amount of the estimated disparity from the corresponding-location in the paired picture of the error picture.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Yoichi Azukizawa
  • Patent number: 8943487
    Abstract: Particular embodiments optimize a C++ function comprising one or more loops for symbolic execution, comprising for each loop, if there is a branching condition within the loop, then rewrite the loop to move the branching condition outside the loop. Particular embodiments may further optimize the C++ function through simplified symbolic expressions and adding constructs forcing delayed interpretation of symbolic expressions during the symbolic execution.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventors: Guodong Li, Sreeranga P. Rajan, Indradeep Ghosh
  • Patent number: 8942093
    Abstract: In a transmission apparatus, a shaping circuit shapes a packet output from a switch in a band of predetermined granularity. A packet generation circuit generates a band correction packet in a band smaller than the band of the predetermined granularity of the shaping circuit and inputs the band correction packet to the shaping circuit.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventor: Masahiro Yoshimoto
  • Patent number: 8942569
    Abstract: An optical transmission/reception system includes a modulator for modulating light based on data to output signal light; a transmission-side signal processor performing transmission-side digital signal processing which imparts a polarization change to the signal light by the optical modulation with respect to an input signal; an optical transmitter in which the modulator performs the optical modulation based on the input signal subjected to the transmission-side digital signal processing in the transmission-side signal processor; and an optical receiver including a converter converting the signal light inputted from the optical transmitter via a transmission path to a digital electric signal for each polarization component, and a reception-side signal processor performing reception-side digital signal processing which imparts a polarization change having a property substantially inverse to a property of the polarization change in the transmission-side signal processor with respect to the digital electric sign
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventors: Takahito Tanimura, Takeshi Hoshida, Hisao Nakashima
  • Patent number: 8942114
    Abstract: A system and method are provided for monitoring traffic in a network comprising a plurality of links, wherein each of the plurality of links comprises a plurality of neighboring pairs of slots. The system and method may include identifying a first usage status and a second usage status, calculating a utilization entropy value based at least on the difference between the first and second usage status, iteratively calculating a set of utilization entropy values for a portion of the network, and calculating an overall utilization entropy value for the portion of the network under analysis based at least on a statistical analysis of the set of utilization entropy values.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventors: Xi Wang, Inwoong Kim, Qiong Zhang, Paparao Palacharla, Motoyoshi Sekiya
  • Patent number: 8943484
    Abstract: An information processing apparatus generates first and second operation trees representing a dependency relationship among the instructions included in a first code, and computes first and second operation sequences from the first and second operation trees. Then, the information processing apparatus computes the longest ones of operation subsequences common to the first and second operation sequences, evaluates, for each longest operation subsequence, the utilization of computing resources used for executing the combinations of instructions of the first and second operation trees corresponding to the operations included in the longest operation subsequence, and selects a combination pattern of instructions indicated by any one of the longest operation subsequences on the basis of the evaluation results.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventors: Takashi Arakawa, Shuichi Chiba, Toshihiro Konda
  • Patent number: 8942238
    Abstract: Tunnels are established between nodes along a packet transfer route in a communication network so that a packet is transferred from a first relay node to a second relay node via one or more intermediate relay nodes using the established tunnels. An intermediate relay node receives, from an adjacent downstream relay node, a reply message storing relay-node addresses identifying the downstream relay node and at least one intermediate relay node between the downstream relay node and the first relay node. The intermediate relay node establishes a tunnel to the downstream relay node in association with the relay-node address of the downstream relay node, updates the reply message by removing the relay-node address of the down stream relay node from the reply message, and transfers the updated reply message to an adjacent upstream relay node along the packet transfer route.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventor: Shinya Kano
  • Patent number: 8942276
    Abstract: There is provided a transmission apparatus which includes a transmitting circuit that receives a bit string in which an input bit string expressed as combination of 0 and 1 is preceded by a 1-bit value 0, computes a difference value between two bits adjacent to each other in the bit string, the difference value being one of among +1, 0, or ?1, and sends the computed difference value, and a receiving circuit that stores a 1-bit value with an initial value of 0, receives the difference value +1, 0, or ?1 sent by the transmitting circuit, calculates a sum of the received difference value and the stored 1-bit value, outputs, as a value of a receiving signal, 1 if the sum is 1 or more or 0 if the sum is 0 or less, and updates the stored 1-bit value to the value of the output receiving signals.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventor: Tatsuya Usuki
  • Patent number: 8940583
    Abstract: In a semiconductor device, a lead frame made of a copper alloy prevents exfoliation occurring near the surface of the lead frame. A copper oxide layer is formed on the base material made of a copper alloy by immersing the base material into a solution of a strong oxidizer. The copper oxide layer serves as an outermost layer and consists of a copper oxide other than a copper oxide in the form of needle crystals.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Takahiro Yurino
  • Patent number: 8941841
    Abstract: A displacement measurement device includes a plurality of light receiving elements each of which outputs a signal corresponding to illuminance of interference fringe, the elements being arranged in a range of two periods of the interference fringe and arranged with an interval based on the period of the interference fringe in a movement direction of the interference fringe, a differential processing unit configured to perform differential processing on predetermined combinations of the signals output from the elements to generate four signals, a phase calculation unit configured to calculate a phase of the interference fringe on the basis of the signals output from the elements; and an output signal selection unit configured to select two signals from among the four signals on the basis of the phase of the interference fringe and select a signal of which absolute value is larger from among the two selected signals.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventors: Katsuki Shirai, Taizan Kobayashi, Kouji Uesaka
  • Patent number: 8942574
    Abstract: A light receiving device includes: a converter digitalizing an analog signal with a given sampling clock frequency, the analog signal being obtained through a photoelectric conversion of a received optical signal; a plurality of fixed distortion compensators compensating an output signal of the converter for waveform distortion with a fixed compensation amount that is different from each other; a plurality of phase shift detector circuits detecting a sampling phase shift from an output signal of the plurality of the fixed distortion compensators; a phase-adjusting-amount determiner determining a sampling phase adjusting amount with use of an output signal of the plurality of the phase shift detector circuits; and a phase adjusting circuit reducing a phase difference between the sampling clock frequency and the received optical signal based on a determination result of the phase-adjusting-amount determiner.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventors: Hisao Nakashima, Takeshi Hoshida
  • Patent number: 8941116
    Abstract: In an aspect of a semiconductor device, there are provided a substrate, a transistor including an electron transit layer and an electron supply layer formed over the substrate, a nitride semiconductor layer formed over the substrate and connected to a gate of the transistor, and a controller controlling electric charges moving in the nitride semiconductor layer.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventor: Tadahiro Imada
  • Patent number: 8942759
    Abstract: A detected information correction apparatus configured to correct detected information, includes: a usage status detecting configured to detect status information on the basis of detected information detected by one or more sensors, the status information indicating how a portable apparatus is being used; a correction data acquiring configured to acquire correction data at specific timing intervals, the correction data being used to correct the detected information; and a detected information correcting configured to correct the detected information with the correction data.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventors: Ai Yano, Ryuichi Matsukura, Jun Kakuta
  • Patent number: 8941146
    Abstract: A compound semiconductor device includes an electron transit layer; an electron supply layer formed over the electron transit layer; a first recessed portion and a second recessed portion formed in the electron supply layer; a chemical compound semiconductor layer including impurities that buries the first recessed portion and the second recessed portion and covers over the electron supply layer; a source electrode formed over the chemical compound semiconductor layer which buries the first recessed portion; a drain electrode formed over the chemical compound semiconductor layer which buries the second recessed portion; and a gate electrode formed over the electron supply layer between the source electrode and the drain electrode, wherein, in the chemical compound semiconductor layer, a concentration of impurities included below the source electrode and the drain electrode is higher than a concentration of impurities included near the gate electrode.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventor: Masahito Kanamura
  • Patent number: 8940571
    Abstract: P-type semiconductor sheets and n-type semiconductor sheets formed by mixing a powder of semiconductor material, a binder resin, a plasticizer, and a surfactant are prepared. In addition, separator sheets formed by mixing a resin such as PMMA and a plasticizer are prepared. Through holes are formed in each of the separator sheets and then filled with a conductive material. Thereafter, the p-type semiconductor sheet, the separator sheet, the n-type semiconductor sheet and the separator sheet are stacked. The resultant laminated body is cut into a predetermined size and then subjected to a baking process.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventors: Kazuaki Kurihara, Masaharu Hida, Kazunori Yamanaka
  • Patent number: 8941714
    Abstract: A transmitting device includes a partial-image-generator that identifies a certain region from image data, the partial-image-generator generating a certain partial image including the certain region identified from the image data, associating region information indicating the certain region with the certain partial image, and causing the region information and the certain partial image to be stored in a data-storage-unit, an image-processing-unit that executes, on the certain partial image associated with the region information and stored in the data-storage-unit, predetermined image processing associated with the region information, a difference-determining-unit that determines whether or not there is a difference between the certain partial image after the image processing and another partial image generated before a generation of the certain partial image and subjected to the image processing, and a transmitter that transmits the certain partial image subjected to the image processing by the image-processi
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventor: Keiji Kurakagi
  • Patent number: 8941437
    Abstract: A bias circuit includes: a reference current generation circuit that has a first reference-current element disposed in a first current path and has a second reference-current element disposed in a second current path; a first current mirror circuit that has a first transistor connected in series with the first reference-current element and has a second transistor connected in series with the second reference-current element; a third reference-current element disposed in a third current path disposed between the power supply terminal and the reference-current element; a third transistor connected in series with the third reference-current element; a bypass capacitor connected between the power supply terminal and a second node connected to a control terminal of the third transistor; an activation circuit connected to the first node; and a first switch connected between the first node and the second node.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventor: Hiroyuki Nakamoto