Patents by Inventor Takao Naito

Takao Naito 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: 8831012
    Abstract: According to particular embodiments, determining paths in a network with asymmetric switches includes receiving a graph representing the network. Each asymmetric switch has defined degree connectivity between one or more pairs of degrees of the asymmetric switch. The graph is transformed to yield a transformed graph that accounts for the asymmetric switches. A routing process is applied to the transformed graph to yield one or more paths through the network.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: September 9, 2014
    Assignee: Fujitsu Limited
    Inventors: Min He, Kevin Zhu, Srinivas Vobilisetti, Takao Naito, Paparao Palacharla, Xi Wang, Qiong Zhang
  • Patent number: 8750127
    Abstract: Systems and methods for multi-domain routing are provided. In some embodiments, a method for determining a path calculation from a source node to a destination node over a multi-domain network is provided. The method may include steps for receiving a predetermined sequence of domains for communicating information from the source node to the destination node, determining a link type for each of a plurality of links in the predetermined sequence of domains, modifying the link type of one or more of the plurality of links such that the plurality of links are unidirectional links towards a destination node, and determining a path along the predetermined sequence of domains based on the modified plurality of links.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: June 10, 2014
    Assignee: Fujitsu Limited
    Inventors: Qiong Zhang, Mohammad Masud Hasan, Xi Wang, Paparao Palacharla, Takao Naito, Fredrick S. Gruman
  • Patent number: 8719380
    Abstract: A method for facilitating remote downloading includes receiving, at a home media gateway associated with at least a first endpoint, a remote download request generated by a web browser running on the first endpoint. The remote download request is relayed to the home media gateway via at least one component of a wireless service provider's network. The wireless service provider provides user authentication for the remote download request. The remote download request includes an address associated with at least one file hosted by a remote server. The method also includes downloading the at least one file from the remote server to the home media gateway. The method further includes, upon detecting a presence of the first endpoint, uploading the at least one file from the home media gateway to the endpoint.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: May 6, 2014
    Assignee: Fujitsu Limited
    Inventors: Chenxi Zhu, Wei-Peng Chen, Takao Naito
  • Patent number: 8719550
    Abstract: Source code to be processed is analyzed and configuration data in implementing in accordance with each of plural implementation systems is created and is stored in a local memory of a DRP incorporating system. When execution of target processing is started, the implementation system determination processing calculates estimated processing time when the configuration of each of the implementation systems is adopted and determines the optimum one of the implementation systems based on a combination of the estimated processing time and the circuit scale of the configuration.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: May 6, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takao Naito, Kazuo Yamada
  • Patent number: 8699518
    Abstract: A system and method are provided for dynamically reconfiguring an optical circuit between a first node and a second node of a communication network. The system and method may include establishing a scheduling window for receiving a plurality of optical traffic demands, classifying the plurality of optical traffic demands into at least a set of bandwidth adjustable demands and a set of fixed bandwidth demands, provisioning a first set of provisioned wavelengths from the plurality of wavelengths to carry the set of fixed bandwidth demands during the scheduling window, allocating the bandwidth remaining on the first set of provisioned wavelengths to the set of bandwidth adjustable demands, and if necessary, provisioning a second set of provisioned wavelengths from the plurality of wavelengths to carry the bandwidth required by the set of bandwidth adjustable demands that could not be allocated to the first set of provisioned wavelengths.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: April 15, 2014
    Assignee: Fujitsu Limited
    Inventors: Xi Wang, Qiong Zhang, Paparao Palacharla, Takao Naito
  • Patent number: 8681634
    Abstract: Systems and methods for determining multiple paths in a multi-domain network are provided. In some embodiments, a method for determining multiple paths in a network is provided. The method may include determining a first path between a source node and a destination node and determining a second path disjoint from the first path. In some embodiments, to determine the second path includes determining which ingress nodes are available in a domain that includes the destination node, where the available ingress nodes are not part of the first path, and implementing a disjoint path algorithm for each of the available ingress nodes. To determine the first path includes implementing forward path calculations.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: March 25, 2014
    Assignee: Fujitsu Limited
    Inventors: Qiong Zhang, Mohammad Masud Hasan, Xi Wang, Paparao Palacharla, Takao Naito, Fredrick S. Gruman
  • Patent number: 8656140
    Abstract: An internal buffer is provided for a DRP core. A selector SEL switches input/output destination of the DRP core between external memory and an internal buffer. Control software executed by a CPU core receives information a pipeline of configurations for a sequence of target processing and generates combinations as to whether the processing result is transferred between the configurations via the external memory or via the internal buffer as transfer manners. Next, for each manner, bandwidth and performance of the external memory used by the DRP core in the manner are calculated. The manner of the best performance satisfying a previously specified bandwidth restriction is selected among the manners and the selector SEL is switched in accordance with the manner.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: February 18, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuo Yamada, Takao Naito
  • Patent number: 8639120
    Abstract: A system is provided for electrical domain optical spectrum shaping. The system may include a laser, a modulator, a first electrical filter, and a second electrical filter. The laser may be configured to output an optical carrier signal. The modulator may be configured to modulate the optical carrier signal to output a modulated optical signal based on a first filtered input signal and a second filtered input signal received by the modulator. The first electrical filter may be configured to filter a first input signal to produce the first filtered input signal. The second electrical filter may be configured to filter a second input signal to produce the second filtered input signal.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: January 28, 2014
    Assignee: Fujitsu Limited
    Inventors: Inwoong Kim, Paparao Palacharla, Takao Naito
  • Patent number: 8634715
    Abstract: In accordance with embodiments of the present disclosure, a method for demand aggregation is provided. The method may include routing demands in a ring network such that a length for each routed demand does not exceed a route length maximum, and a load imbalance at each node in the ring network is minimized. The method may also include maximizing optical line card sharing by assigning routed demands sharing common ends to the same wavelength.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: January 21, 2014
    Assignee: Fujitsu Limited
    Inventors: Xi Wang, Qiong Zhang, Paparao Palacharla, Takao Naito
  • Patent number: 8587793
    Abstract: A print image processing apparatus, includes N image processing circuits; a selection unit that estimates, every N pages, a necessary time corresponding to each of (i) a page-based parallel method for allocating image processing of the N pages to the image processing circuits in units of pages to perform the image processing of the N pages in parallel, and (ii) a paginal-object-based parallel method for allocating image processing of each single page to the image processing circuits in units of objects to perform the image processing of the objects of each single page in parallel, and selects one of the page-based parallel method and the paginal-object-based parallel method such that the estimated necessary time corresponding to the selected one of the parallel methods is shorter than the estimated necessary time; and an allocation unit that allocates image processing of the N pages to the N image processing circuit, respectively.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: November 19, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takao Naito, Kazuo Yamada
  • Patent number: 8554003
    Abstract: An image data processing apparatus includes the following elements. A lossless compression device performs lossless compression. A configuration controller performs control so that a first configuration including a first line memory set and a decompression circuit set and a second configuration including a second line memory set are selectively set in a reconfigurable circuit. A maximum size determining device determines the maximum size of lines of the compressed image data. An output controller performs control so that, when the maximum size is equal to or smaller than a predetermined threshold, the first configuration is set and the compressed image data is output to an image processing circuit via the first line memory set, and so that, when the maximum size is greater than the predetermined threshold, the second configuration is set and the non-compressed image data is output to the image processing circuit via the second line memory set.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: October 8, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takao Naito, Kazuo Yamada
  • Patent number: 8553326
    Abstract: In accordance with one embodiment of the present disclosure, an optical signal bidirectional transmission system comprises a bi-directional port configured to receive and output optical beams, an input port configured to receive beams and an output port configured to output beams, and only one birefringent crystal. A first beam manipulation system configured to adjust polarization of the beams, and direct the beams from the bi-directional port to the birefringent crystal. A second beam manipulation system configured to adjust polarization of the beams, and direct the beams from the input port to the birefringent crystal. The birefringent crystal is configured to direct the beams received from the first beam manipulation system such that the beams may exit the second beam manipulation system through the output port and direct the beams received from the second beam manipulation system such that the beams may exit the first beam manipulation system through the bi-directional port.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: October 8, 2013
    Assignee: Fujitsu Limited
    Inventors: Alexander Umnov, Takao Naito
  • Publication number: 20130253878
    Abstract: A non-transitory computer readable medium stores a movement situation determining program for causing a computer to function as a two-axial direction correlation value calculating portion that calculates a correlation value indicating a relationship between motions in two axial directions of a plurality of axial directions on the basis of information obtained by detecting motions of a moving target in the plurality of axial directions, and a movement situation determining portion that determines a movement situation of the moving target on the basis of the correlation value.
    Type: Application
    Filed: July 3, 2012
    Publication date: September 26, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro SATO, Takayuki TAKEUCHI, Kyotaro TOMODA, Minoru MITSUI, Tsutomu ISHII, Shigehiko SASAKI, Akira ICHIBOSHI, Takao NAITO
  • Patent number: 8488979
    Abstract: An apparatus for use with an optical computation system may comprise a monolithic device with no free space optical components and may include a phase modulator and a polarization modulator. The phase modulator may be configured to receive a beam of light and two digital data streams and operable to modulate the phase of the beam of light to at least four phase states, the at least four phase states representing the two digital data streams. The polarization modulator may be configured to receive two additional digital data streams and the modulated beam of light from the phase modulator and operable to modulate the polarization of the beam of light to at least four polarization states, the at least four polarization states representing the two additional digital data streams.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: July 16, 2013
    Assignee: Fujitsu Limited
    Inventors: Inwoong Kim, Takao Naito
  • Patent number: 8467690
    Abstract: Methods and systems are provided for cancellation of chromatic dispersion combined laser phase noise. A method may include measuring a differential of laser phase noise using two optical pilot signals, the pilot signals each having a different optical frequency, or using an optical carrier and a pilot signal. The method may also include determining an approximate laser phase noise present in an optical system based on the measured differential of laser phase noise. The method may further include compensating for laser phase noise based on the determined approximate laser phase noise.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: June 18, 2013
    Assignee: Fujitsu Limited
    Inventors: Inwoong Kim, Takao Naito, Olga I. Vassilieva
  • Patent number: 8447182
    Abstract: According to one embodiment, a system for transmitting an optical signal comprises a traffic distribution circuit configured to distribute traffic to a plurality of wavelength division multiplexer (WDM) modules. The system further comprises a first WDM module and a second WDM module. The first and second WDM modules each comprise a plurality of tunable optical transmitters, with each transmitter associated with a different wavelength band of a plurality of wavelength bands. Each transmitter in the first and second WDM modules is also tuned to transmit optical signals in channels included within the associated wavelength band of the transmitter. The first and second WDM modules each comprise a multiplexer configured to combine the optical signals transmitted from the plurality of transmitters into optical signals. The system further comprises a cyclic multiplexer configured to combine the optical signals from the first and second WDM modules into an optical output signal.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: May 21, 2013
    Assignee: Fujitsu Limited
    Inventors: Martin Bouda, Inwoong Kim, Takao Naito
  • Patent number: 8437273
    Abstract: According to one embodiment, allocating demand includes receiving a demand graph that describes demands of a network. One or more weights are calculated for each demand. The demands are allocated according to the weights of the demands to optimize optical line card sharing.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: May 7, 2013
    Assignee: Fujitsu Limited
    Inventors: Xi Wang, Paparao Palacharla, Takao Naito
  • Publication number: 20130093698
    Abstract: A contact detecting device includes a plurality of detecting elements, a generating unit, and a determining unit. The plurality of detecting elements are related to one another in a two-dimensional configuration on a predetermined contacted surface, and respectively detect a contact of an object with the contacted surface. The generating unit generates, on the basis of the result of detection by the plurality of detecting elements, feature information representing a feature of a trajectory drawn on the basis of a contact of an object with the contacted surface. The determining unit determines whether or not the feature information generated by the generating unit corresponds to previously registered specific contact feature information representing a feature of a trajectory drawn on the basis of a specific contact of an object with the contacted surface.
    Type: Application
    Filed: April 27, 2012
    Publication date: April 18, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Akira ICHIBOSHI, Tsutomu ISHII, Takayuki TAKEUCHI, Shigehiko SASAKI, Masahiro SATO, Kyotaro TOMODA, Takao NAITO, Minoru MITSUI
  • Publication number: 20130080170
    Abstract: An audio analysis apparatus includes the following components. A main body includes a discrimination unit and a transmission unit. A strap is used for hanging the main body from a user's neck. A first audio acquisition device is provided to the strap or the main body. A second audio acquisition device is provided to the strap at a position where a distance between the second audio acquisition device and the user's mouth is smaller than the distance between the first audio acquisition device and the user's in a state where the strap is worn around the user's neck. The discrimination unit discriminates whether an acquired sound is an uttered voice of the user or of another person by comparing audio signals of the sound acquired by the first and second audio acquisition devices. The transmission unit transmits information including the discrimination result to an external apparatus.
    Type: Application
    Filed: March 5, 2012
    Publication date: March 28, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Haruo HARADA, Hirohito YONEYAMA, Kei SHIMOTANI, Yohei NISHINO, Kiyoshi IIDA, Takao NAITO
  • Publication number: 20130080169
    Abstract: An audio analysis system includes a terminal apparatus and a host system. The terminal apparatus acquires an audio signal of a sound containing utterances of a user and another person, discriminates between portions of the audio signal corresponding to the utterances of the user and the other person, detects an utterance feature based on the portion corresponding to the utterance of the user or the other person, and transmits utterance information including the discrimination and detection results to the host system. The host system detects a part corresponding to a conversation from the received utterance information, detects portions of the part of the utterance information corresponding to the user and the other person, compares a combination of plural utterance features corresponding to the portions of the part of the utterance information of the user and the other person with relation information to estimate an emotion, and outputs estimation information.
    Type: Application
    Filed: February 10, 2012
    Publication date: March 28, 2013
    Applicant: FUJI XEROX Co., Ltd.
    Inventors: Haruo HARADA, Hirohito YONEYAMA, Kei SHIMOTANI, Yohei NISHINO, Kiyoshi IIDA, Takao NAITO