Patents by Inventor Naoki Kuwata

Naoki Kuwata 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: 8867099
    Abstract: A method for image processing image data having a plurality of picture elements. While scanning the image data, a scanned picture element is determined to be sampled or not according to a plurality of sampling methods until the scanned picture element is displaced to a next picture element (to be scanned) of the image data.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: October 21, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Naoki Kuwata, Yoshihiro Nakami
  • Patent number: 8737848
    Abstract: An optical receiver includes: an optical amplifier amplifying an optical signal fed thereinto according to an operating current fed thereinto, the optical signal being a wavelength-multiplexed optical signal, a demultiplexer demultiplexing an optical signal output from the optical amplifier; and an operating-current control circuit selecting a monitoring target from a plurality of wavelength signals output from the demultiplexer and controlling the operating current of the optical amplifier so that optical power of the monitoring target is controlled to be a predetermined value.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: May 27, 2014
    Assignees: Fujitsu Limited, Fujitsu Optical Components Limited
    Inventors: Tadashi Ikeuchi, Naoki Kuwata
  • Publication number: 20140126025
    Abstract: A CPU selects multiple objective image data to be pasted on ornamental image data, analyzes the selected multiple objective image data, and rates the image qualities of the respective image data. The CPU specifies the number of plural layout locations included in the ornamental image data and the priority order of the plural layout locations, and allocates the multiple objective image data to the plural layout locations in the ornamental image data, based on the specified priority order and the ratings of the multiple objective image data. The CPU executes image quality adjustment with regard to the multiple objective image data allocated to the plural layout locations and pastes the quality-adjusted image data on the ornamental image data according to layout control information, so as to generate resulting output image data.
    Type: Application
    Filed: January 9, 2014
    Publication date: May 8, 2014
    Inventor: Naoki Kuwata
  • Patent number: 8681380
    Abstract: A computer calculates an edginess, which is an image variation from a differential value of data for adjacent picture elements, and determines object picture elements by selecting only images with a large variation. As optimum parameters for contrast correction and lightness compensation are calculated from image data for object picture elements, image processing indicators based on object picture elements are determined, and optimum imago processing can be performed automatically. After summing a luminance Distribution for each area of the image, which is a feature amount, while uniformly selecting picture elements, a reevaluation is performed by a weighting determined for each area, and a luminance distribution, strongly influenced by the luminance distribution of the photographed object is thus obtained with uniform sampling.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: March 25, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Naoki Kuwata, Yoshihiro Nakami
  • Patent number: 8645818
    Abstract: A CPU selects multiple objective image data to be pasted on ornamental image data, analyzes the selected multiple objective image data, and rates the image qualities of the respective image data. The CPU specifies the number of plural layout locations included in the ornamental image data and the priority order of the plural layout locations, and allocates the multiple objective image data to the plural layout locations in the ornamental image data, based on the specified priority order and the ratings of the multiple objective image data. The CPU executes image quality adjustment with regard to the multiple objective image data allocated to the plural layout locations and pastes the quality-adjusted image data on the ornamental image data according to layout control information, so as to generate resulting output image data.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: February 4, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Naoki Kuwata
  • Patent number: 8582670
    Abstract: A receiving apparatus receives parallel data signals including a plurality of channels from a transmitting apparatus. The receiving apparatus includes a receiver, a detector, and a switch. The receiver receives the parallel data signals. The detector detects a first skew between channels within the receiving apparatus, and a second skew between channels prior to reception by the receiver. The switch interchanges the plurality of channels of the parallel data signals so as to reduce a total skew as a sum of the first skew and the second skew.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: November 12, 2013
    Assignee: Fujitsu Limited
    Inventor: Naoki Kuwata
  • Patent number: 8553285
    Abstract: In image processing according to the prior art, the important part of photographic image data (referred to herein as the object) could not be determined and therefore required human participation. A computer 21 which is the core of image processing calculates an edginess which is an image variation from a differential value of data for adjacent picture elements in a step SA110, and determines object picture elements by selecting only images with a large variation in steps SA120, SA130. As optimum parameters for contrast correction and lightness compensation are calculated from image data for object picture elements in steps SA310-SA330, image processing indicators based on object picture elements are determined, and optimum image processing can be performed automatically.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: October 8, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Naoki Kuwata, Yoshihiro Nakami
  • Patent number: 8446978
    Abstract: According to an aspect of an embodiment, a communication system includes a transmission apparatus with a coding section that generates multi-level-coded signals and transmits the multi-level-coded signals; and a deskew signal generation section that generates and transmits a deskew signal related to the multi-level-coded signals. The communication system also includes a receiving apparatus with a decoding section that decodes the multi-level-coded signals to generate decoded signals, and a deskew processing section that performs deskew processing for compensating skew among the decoded signals of the multiple channels. The deskew signal generation section generates the deskew signal that has been framed by extracting a part of the data from each of the channels of the input signals, adding framing data for enabling a receiving apparatus to recognize which channel the extracted data has been extracted from, and performing rate conversion.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: May 21, 2013
    Assignee: Fujitsu Limited
    Inventor: Naoki Kuwata
  • Patent number: 8306439
    Abstract: A communication apparatus in accordance with an embodiment comprises a reception unit configured to demodulate a received signal to output a first demodulated signal in dependence on a reception condition. The communication apparatus further comprises a pattern detection unit configured to detect a characteristic pattern in the first demodulated signal to output a pattern detection signal, and a pitch detection unit configured to detect a pitch of the characteristic pattern based on the pattern detection signal to output a first signal detection signal indicating that the first demodulated signal is one of an in-phase signal and a quadrature signal, or an inverted version of the one of the in-phase signal and the quadrature signal.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: November 6, 2012
    Assignee: Fujitsu Limited
    Inventors: Naoki Kuwata, Tadashi Ikeuchi, Toru Katagiri
  • Publication number: 20120237225
    Abstract: According to an aspect of an embodiment, a communication system includes a transmission apparatus with a coding section that generates multi-level-coded signals and transmits the multi-level-coded signals; and a deskew signal generation section that generates and transmits a deskew signal related to the multi-level-coded signals. The communication system also includes a receiving apparatus with a decoding section that decodes the multi-level-coded signals to generate decoded signals, and a deskew processing section that performs deskew processing for compensating skew among the decoded signals of the multiple channels. The deskew signal generation section generates the deskew signal that has been framed by extracting a part of the data from each of the channels of the input signals, adding framing data for enabling a receiving apparatus to recognize which channel the extracted data has been extracted from, and performing rate conversion.
    Type: Application
    Filed: May 2, 2012
    Publication date: September 20, 2012
    Applicant: Fujitsu Limited
    Inventor: Naoki KUWATA
  • Patent number: 8270526
    Abstract: According to an aspect of an embodiment, a communication system includes a transmission apparatus with a coding section that generates multi-level-coded signals and transmits the multi-level-coded signals; and a deskew signal generation section that generates and transmits a deskew signal related to the multi-level-coded signals. The communication system also includes a receiving apparatus with a decoding section that decodes the multi-level-coded signals to generate decoded signals, and a deskew processing section that performs deskew processing for compensating skew among the decoded signals of the multiple channels. The deskew signal generation section generates the deskew signal that has been framed by extracting a part of the data from each of the channels of the input signals, adding framing data for enabling a receiving apparatus to recognize which channel the extracted data has been extracted from, and performing rate conversion.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: September 18, 2012
    Assignee: Fujitsu Limited
    Inventor: Naoki Kuwata
  • Publication number: 20120229871
    Abstract: A method for image processing image data having a plurality of picture elements. While scanning the image data, a scanned picture element is determined to be sampled or not according to a plurality of sampling methods until the scanned picture element is displaced to a next picture element (to be scanned) of the image data.
    Type: Application
    Filed: April 25, 2012
    Publication date: September 13, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Naoki Kuwata, Yoshihiro Nakami
  • Patent number: 8243328
    Abstract: A printing method includes obtaining scene information concerning image data from supplemental data that is appended to the image data; classifying a scene of an image represented by the image data, based on the image data; comparing the classified scene with a scene indicated by the scene information; and printing a printout that is used to urge a user to make a continuation when a mismatch between the classified scene and the scene indicated by the scene information exists.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: August 14, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Tsuneo Kasai, Kaori Matsumoto, Hirokazu Kasahara, Kenji Fukasawa, Naoki Kuwata
  • Publication number: 20120121259
    Abstract: An optical transmission device includes a first power monitor to monitor a first signal into which second signals with respectively different wavelengths are multiplexed so as to measure received power of the first signal; an amplifier to amplify the first signal, to generate a third signal; a driver to drive the amplifier; a demultiplexer to separate the third signal into fourth signals with the different respectively wavelengths; second power monitors each to monitor each of the fourth signals so as to measure received power of each of the fourth signals; a memory to store therein data related to gain in the amplifier, the data corresponding to each of wavelengths of the second signals, with respect to parameters which are the received power measured by the first power monitor and driving condition; and a processor to calculate power of each of the second signals.
    Type: Application
    Filed: September 19, 2011
    Publication date: May 17, 2012
    Applicant: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventors: Naoki Kuwata, Koji Otsubo
  • Publication number: 20120082465
    Abstract: A phase shift unit provides a prescribed phase difference (?/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit. A low-frequency signal f0 is superimposed on one of the optical signals. A signal of which phase is shifted by ?/2 from the low-frequency signal f0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode. 2f0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit is controlled by feedback control so that the 2f0 component becomes the minimum.
    Type: Application
    Filed: September 10, 2010
    Publication date: April 5, 2012
    Applicant: Fujitsu Limited
    Inventors: Yuichi Akiyama, Takeshi Hoshida, Akira Miura, Yutaka Kai, Hiroki Ooi, Jens Rasmussen, Kentaro Nakamura, Naoki Kuwata, Yoshinori Nishizawa, Tomoo Takahara, Masahiro Yuki
  • Publication number: 20110294308
    Abstract: There is provided a substrate that includes a base substrate, a socket that has a step where the step has a first surface and a second surface, the socket being electrically coupled with the base substrate at the first surface; and a connection substrate that is disposed between the second surface and the base substrate, where the connection substrate is electrically coupled with the socket at the second surface.
    Type: Application
    Filed: May 25, 2011
    Publication date: December 1, 2011
    Applicant: FUJITSU LIMITED
    Inventors: Naoki KUWATA, Tadashi Ikeuchi, Takatoshi Yagisawa
  • Publication number: 20110188776
    Abstract: In image processing according to the prior art, the important part of photographic image data (referred to herein as the object) could not be determined and therefore required human participation. A computer 21 which is the core of image processing calculates an edginess which is an image variation from a differential value of data for adjacent picture elements in a step SA110, and determines object picture elements by selecting only images with a large variation in steps SA120, SA130. As optimum parameters for contrast correction and lightness compensation are calculated from image data for object picture elements in steps SA310-SA330, image processing indicators based on object picture elements are determined, and optimum image processing can be performed automatically.
    Type: Application
    Filed: April 6, 2011
    Publication date: August 4, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Naoki KUWATA, Yoshihiro NAKAMI
  • Publication number: 20110182591
    Abstract: An optical receiver includes: an optical amplifier amplifying an optical signal fed thereinto according to an operating current fed thereinto, the optical signal being a wavelength-multiplexed optical signal, a demultiplexer demultiplexing an optical signal output from the optical amplifier; and an operating-current control circuit selecting a monitoring target from a plurality of wavelength signals output from the demultiplexer and controlling the operating current of the optical amplifier so that optical power of the monitoring target is controlled to be a predetermined value.
    Type: Application
    Filed: January 21, 2011
    Publication date: July 28, 2011
    Applicants: Fujitsu Limited, Fujitsu Optical Components Limited
    Inventors: Tadashi Ikeuchi, Naoki Kuwata
  • Patent number: 7978247
    Abstract: The focusing information visualization system of the invention extracts an edge having an edge intensity of not less than a first reference value Th1 and an edge width of not greater than a second reference value Th2 in a photographic image and displays the extracted edge in a preset color at a position of the edge extraction to be overlapped with the original photographic image on a screen. A focused area defined by the extracted edge is displayed as N divisional areas. In response to a user's operational specification of one divisional area among the N divisional areas, an enlarged photographic image corresponding to the specified divisional area at a desired magnification ratio is displayed on the screen. This arrangement adopts the automatic rough judgment and the user's final visual check to accurately recognize the focusing status of the photographic image.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: July 12, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Ayahiro Nakajima, Naoki Kuwata, Kenji Matsuzaka, Seiji Aiso
  • Patent number: 7940426
    Abstract: In image processing according to the prior art, the important part of photographic image data (referred to herein as the object) could not be determined and therefore required human participation. A computer 21 which is the core of image processing calculates an edginess which is an image variation from a differential value of data for adjacent picture elements in a step SA110, and determines object picture elements by selecting only images with a large variation in steps SA120, SA130. As optimum parameters for contrast correction and lightness compensation are calculated from image data for object picture elements in steps SA310-SA330, image processing indicators based on object picture elements are determined, and optimum image processing can be performed automatically.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: May 10, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Naoki Kuwata, Yoshihiro Nakami