Patents Assigned to Fujitsu
  • Publication number: 20240137127
    Abstract: An optical transmitter includes a signal processor and transmission circuit. The signal processor modulates a first signal to generate a first modulated signal, determines a modulo amplitude that is larger than an amplitude of the first modulated signal, inserts a second modulated signal into the first modulated signal to generate a transmission signal, corrects a symbol of the transmission signal by using an amplitude of one or a plurality of previous symbols to generate a pre-equalized signal, and performs modulo calculation based on the modulo amplitude on the pre-equalized signal. The transmission circuit generates a modulated optical signal based on an output signal of the signal processor and transmits the modulated optical signal to a reception node. An amplitude of the second modulated signal is equal to the modulo amplitude.
    Type: Application
    Filed: July 17, 2023
    Publication date: April 25, 2024
    Applicant: Fujitsu Limited
    Inventors: GUOXIU HUANG, Hisao NAKASHIMA
  • Patent number: 11968667
    Abstract: Embodiments of this disclosure provide sidelink resource multiplexing and indication methods and apparatuses thereof. The method includes: receiving by a second device length information indicating a length of a first part in a slot transmitted by a terminal equipment or a network device; and performing transmission and/or reception of sidelink information by the second device with a first device according to the length information. Hence, the second device is able to process the first part according to the length information, thereby improving performance of sidelink transmission.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: April 23, 2024
    Assignee: FUJITSU LIMITED
    Inventors: Jian Zhang, Pengyu Ji, Guorong Li, Lei Zhang, Xin Wang
  • Patent number: 11968695
    Abstract: A communication device includes a processor that selects a first resource such that the first resource that is used to transmit data by the communication device does not overlap with a second resource that is used to transmit data by another communication device located in vicinity of the communication device and a transmitter that transmits the data by using the first resource selected by the processor.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: April 23, 2024
    Assignee: FUJITSU LIMITED
    Inventors: Jianming Wu, Hiroshi Aoki
  • Patent number: 11967539
    Abstract: A heat dissipation sheet includes a first sheet composed of a plurality of first carbon nanotubes, and a second sheet composed of a plurality of second carbon nanotubes, wherein the first sheet and the second sheet are coupled in a stacked state, and the first carbon nanotubes and the second carbon nanotubes are different in an amount of deformation when pressure is applied.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: April 23, 2024
    Assignee: FUJITSU LIMITED
    Inventors: Shinichi Hirose, Daiyu Kondo
  • Patent number: 11968731
    Abstract: A processing method includes: determining at least one of first conditions in a first situation, by a second wireless apparatus in a system which includes a first wireless apparatus and a plurality of the second wireless apparatuses, the first situation being when the wireless apparatus operates in an idle mode and when communication between the wireless apparatus and the one other second wireless apparatus is performed via a first channel, the first conditions including whether a quality of the first channel is lower than a predetermined quality and whether a switching instruction is received; and executing a first process by the second wireless apparatus when the at least one of first conditions is met, the first process including establishing a second channel between the second wireless apparatus and the first wireless apparatus, and switching from communication via the first channel to communication via the second channel.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: April 23, 2024
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Ohta, Shinichiro Aikawa, Takayoshi Ode
  • Patent number: 11967108
    Abstract: A recording medium stores a program for causing a computer to execute processing including acquiring a captured image and a depth image that represents a distance from an imaging position, identifying a road region and another region in contact with the road region from the captured image, calculating a change in a depth of a first region that corresponds to the road region and a change in a depth of a second region that corresponds to the another region included in the depth image, determining whether or not the another region is a detection target based on the change in the depth of the first region and the change in the depth of the second region, and identifying a position of a subject included in the another region based on the depth of the second region and the imaging position when the another region is the detection target.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: April 23, 2024
    Assignee: FUJITSU LIMITED
    Inventor: Shun Kohata
  • Patent number: 11968033
    Abstract: Optical transmission system transmits WDM signal from first node to second node via optical fiber. The optical transmission system includes: first OCM that detects optical power of each wavelength channel of the WDM signal in the first node; second OCM that detects optical power of each wavelength channel of the WDM signal in the second node; first processor that calculates linear SNR of each wavelength channel based on the optical power of each wavelength channel detected by the second OCM; second processor that calculates non-linear SNR of each wavelength channel based on the optical power of each wavelength channel detected by the first OCM; third processor that calculates GSNR for each wavelength channel using the linear SNR and the non-linear SNR; and fourth processor that controls transmission power of each wavelength channel of the WDM signal based on the GSNR of each wavelength channel.
    Type: Grant
    Filed: July 28, 2022
    Date of Patent: April 23, 2024
    Assignee: FUJITSU LIMITED
    Inventors: Tomohiro Yamauchi, Takafumi Terahara, Goji Nakagawa
  • Patent number: 11964839
    Abstract: A conveyance route switching mechanism and a paper sheet handling apparatus that includes the conveyance route switching mechanism include a driving source, a gate, a first gear, and an internal gear. The driving source includes a driving shaft. The gate includes a gate shaft, and a blade that is provided on the gate shaft, and switches conveyance routes of paper sheets. The first gear is provided on the gate shaft. The internal gear meshes with the first gear. According to rotation of the driving shaft, the gate shaft rotates on an axis of the gate shaft, and revolves with the driving shaft as a rotation center while the first gear meshes with the internal gear.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: April 23, 2024
    Assignee: FUJITSU FRONTECH LIMITED
    Inventors: Takashi Wada, Tomoyuki Tamahashi, Satoshi Hayashi, Atsushi Ando, Shohei Koizumi, Shoichi Deguchi, Akira Yamada
  • Publication number: 20240126992
    Abstract: A non-transitory computer-readable recording medium storing an information processing program for causing a computer to execute processing including: selecting a sentence of a second vector similar to a first vector, based on the first vector of a sentence that belongs to a first domain and the second vector of a sentence that belongs to a second domain; determining whether or not the selected sentence is the sentence that belongs to the first domain, by inputting the selected sentence into a classifier trained by using the sentence that belongs to the first domain; and extracting the sentence that belongs to the first domain, from among a plurality of the selected sentences, based on a determination result.
    Type: Application
    Filed: July 13, 2023
    Publication date: April 18, 2024
    Applicant: Fujitsu Limited
    Inventor: Jun LIANG
  • Publication number: 20240129034
    Abstract: A forward Raman amplifier includes a plurality of pumping light sources with different wavelengths and the forward Raman amplifier, according to a fiber type or a zero-dispersion wavelength of the fiber, changes the number of pumping light sources to be emitted, changes a power ratio between the plurality of pumping light sources with the different wavelengths or changes wavelength characteristics of a gain, according to a fiber type.
    Type: Application
    Filed: July 12, 2023
    Publication date: April 18, 2024
    Applicant: Fujitsu Limited
    Inventors: Hiroshi NAKAMOTO, GOJI NAKAGAWA, Kentaro KAWANISHI, Hiroki OI, Tomohiro YAMAUCHI, Takafumi TERAHARA, Teppei OHATA
  • Publication number: 20240125561
    Abstract: A cooling device includes: a container in which a refrigerant is sealed; an evaporating part that evaporates the refrigerant in a liquid phase by heat reception inside the container; a condensing part that condenses the refrigerant in a gas phase by heat dissipation inside the container; and a plate-shaped or block-shaped flow path member in which a plurality of flow paths configured to transport the refrigerant in a liquid phase from the condensing part to the evaporating part by surface tension inside the container is formed in parallel.
    Type: Application
    Filed: December 21, 2023
    Publication date: April 18, 2024
    Applicant: FUJITSU LIMITED
    Inventors: Kento OHGA, Hideo KUBO, Kenji SASABE, Masahide KODAMA, Atsushi ENDO, Keita HIRAI, Nobumitsu AOKI, Takashi URAI
  • Publication number: 20240129049
    Abstract: A method and an apparatus for evaluating transmission impairments of a multiplexing converter. According to the method, impairments of a multiplexing converter are equivalent to the equivalent multiplicative noise and the equivalent additive noise, so as to allow evaluation of transmission impairments of the multiplexing converter, thereby to allow evaluation of the performance of a communication system. The multiplexing converter is a multiplexing analog-to-digital converter, or a multiplexing digital-to-analog converter. According to the present application, impairments of a multiplexing converter can be evaluated accurately, the performance evaluation of a communication system using the multiplexing converter is given, without being affected by an amplitude, a modulation format and a transmission rate of an input signal.
    Type: Application
    Filed: October 10, 2023
    Publication date: April 18, 2024
    Applicant: FUJITSU LIMITED
    Inventors: Xiaofei SU, Tong YE, Zhenning TAO
  • Publication number: 20240126835
    Abstract: A computer-readable recording medium stores a sampling program for causing a computer to execute a process. The process includes: performing sampling of a second probability distribution obtained by adding an inverse temperature parameter based on an inverse temperature that is a physical amount to a first probability distribution and training a first variational model based on first data obtained through sampling; performing sampling of a third probability distribution obtained by increasing a value of the inverse temperature parameter, by using the trained first variational model and training a second variational model based on sampled second data; and outputting a sample that corresponds to the first probability distribution, based on a result of the sampling of the third probability distribution by using the trained second variational model.
    Type: Application
    Filed: July 18, 2023
    Publication date: April 18, 2024
    Applicant: Fujitsu Limited
    Inventor: Yuma ICHIKAWA
  • Publication number: 20240126828
    Abstract: A non-transitory computer-readable recording medium stores a detection program for causing a computer to execute a process. In the process, the computer generates weighted graph structure data for a plurality of pieces of time-series data, with a partial correlation specified based on a matrix calculated by solving an optimization problem about a precision matrix for the plurality of pieces of time-series data, as a weight of a side in a graph; and detects a sign of an anomaly, based on distribution of data points in a predetermined region in a persistence diagram obtained by a persistent homology transformation for the weighted graph structure data.
    Type: Application
    Filed: July 28, 2023
    Publication date: April 18, 2024
    Applicant: Fujitsu Limited
    Inventor: Hiroaki KURIHARA
  • Publication number: 20240127051
    Abstract: A non-transitory computer-readable recording medium stores a machine learning program for causing a computer to execute a process including: for a machine learning model that includes a plurality of preliminarily trained layers, a first output layer formed according to a downstream task and coupled to a final layer of the plurality of layers, and a plurality of second output layers that is coupled to respective outputs of layers other than the final layer of the plurality of layers and has a same configuration as the first output layer, training only the first output layer and the second output layer of the machine learning model using the downstream task; and training the entire machine learning model that includes the first output layer and the second output layer using the downstream task.
    Type: Application
    Filed: July 26, 2023
    Publication date: April 18, 2024
    Applicant: Fujitsu Limited
    Inventor: Yasufumi SAKAI
  • Publication number: 20240126671
    Abstract: A non-transitory computer-readable recording medium stores a performance monitoring program for causing a computer to execute processing including: in collection of a plurality of pieces of performance information of a processor when a program that operates in the processor is executed, associating and accumulating an operation characteristic of the program for each of the plurality of pieces of performance information; and selecting, in a case where the number of performance monitoring counters (PMCs) included in the processor is smaller than a total number of the plurality of pieces of performance information, performance information that has the operation characteristic of the program most separated from a current value of the operation characteristic of the program from the plurality of pieces of performance information, and allocating the performance information to the PMC.
    Type: Application
    Filed: June 26, 2023
    Publication date: April 18, 2024
    Applicant: Fujitsu Limited
    Inventor: Akira HIRAI
  • Publication number: 20240129169
    Abstract: A training method for causing a computer to execute process, the process includes measuring an inter-symbol interference value generated in a transmission path of double data rate (DDR) transmission that uses a decision feedback equalizer (DFE) circuit, based on a control result of a training pattern, a voltage reference value of a dynamic random access memory (DRAM), and a tap value of the DFE circuit, and obtaining a set tap value to be set in the DFE circuit, based on the measured inter-symbol interference value.
    Type: Application
    Filed: July 12, 2023
    Publication date: April 18, 2024
    Applicant: Fujitsu Limited
    Inventor: Yasumasa OTA
  • Patent number: 11963039
    Abstract: A base station includes, in an aspect, a first reception unit, a first transmission unit, and a second transmission unit. The first reception unit receives information related to a communication processing state of another base station from the other base station. The first transmission unit transmits duplication of data to be transmitted to a terminal device to the other base station. The second transmission unit transmits the data to the terminal device by using radio communication. Furthermore, the first transmission unit transmits, after the transmission of the data performed by the second transmission unit has been completed, in accordance with the information related to the communication processing state of the other base station, a transmission completion notification that indicates that the transmission of the data has been completed to the other base station.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: April 16, 2024
    Assignee: FUJITSU LIMITED
    Inventor: Akira Hirata
  • Patent number: 11958286
    Abstract: A printer includes a transport part that transports a sheet, a printing part that prints on the sheet, a cutting part that cuts the sheet by moving a movable blade toward a stationary blade, and a controller that controls the transport part and the cutting part. When the sheet is label paper having an adhesive layer, the controller controls the transport part and the cutting part to transport the sheet rearward before moving the movable blade that cut the sheet, move the movable blade in a direction away from the stationary blade in a state where the sheet is fed in rearward, and thereafter transport the sheet frontward.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: April 16, 2024
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Katsuhisa Beniya, Hiroyuki Kataoka, Taichi Sakakura
  • Patent number: 11960449
    Abstract: A recording medium stores an information processing program for managing a plurality of storage devices and a plurality of servers. The program causes a computer to execute a process including: while changing a compression ratio setting, obtaining an actual compression ratio by using some of data pieces to be used by the plurality of servers and a decompression rate at which the servers decompress a compressed dataset in which the some data pieces are compressed; and determining the compression ratio setting to be used based on a maximum total bandwidth of the plurality of storage devices and a number of the plurality of servers by using the obtained actual compression ratio and the decompression rate for each of the compression ratio settings.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: April 16, 2024
    Assignee: FUJITSU LIMITED
    Inventors: Hiroki Ohtsuji, Eiji Yoshida