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).

Focusing information visualization device, and corresponding method, program and recording medium

Publication number: 20080036900

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: Application

Filed: August 13, 2007

Publication date: February 14, 2008

Inventors: Ayahiro Nakajima, Naoki Kuwata, Kenji Matsuzaka, Seiji Aiso
Image processing system via network

Patent number: 7327490

Abstract: The technique of the present invention ensures output of an image subjected to image processing, which does not depend upon the output environment but reflects the color reproduction characteristics of a shooting device and the intention of a photographer in shooting. The process generates an image file that includes picture data generated by a digital still camera, as well as control data and output specification information attached thereto. The control data controls the details of image processing according to the color reproduction characteristics of the camera and the intention of the photographer in shooting. The output specification information specifies, for example, the address of a printing device used as an output resource, the type of printing paper used for printing, and the number of copies. The image file is transmitted to an image processing system on a network.

Type: Grant

Filed: February 8, 2002

Date of Patent: February 5, 2008

Assignee: Seiko Epson Corporation

Inventors: Naoki Kuwata, Yoshihiro Nakami, Satoru Nishio, Kenji Fukasawa, Yasumasa Nakajima
Control method and apparatus for receiving optical signal

Publication number: 20080019463

Abstract: A receiving/processing unit receives signals parallelized by a parallelizing unit, and executes a frame process including frame synchronization process on the signals. A phase comparing circuit and a phase judging circuit judge whether a bit delay is present based on a phase difference between a phase of a clock signal at a clock/data recovering unit and a phase of a clock signal at the parallelizing unit. The receiving/processing unit includes a logic processing circuit that executes a bit delay process based on a result of judgment by the phase comparing circuit and the phase judging circuit.

Type: Application

Filed: November 30, 2006

Publication date: January 24, 2008

Inventors: Tadashi Ikeuchi, Naoki Kuwata, Toru Katagiri
Deskew device and deskew method

Publication number: 20070286612

Abstract: In a receiver, a skew detector detects a skew between two synchronization symbols having different wavelengths among synchronization symbols included in received signals. A skew rough adjustment calculator calculates a delay compensation amount for each received signal based on the skew and a signal delay characteristic in a transmission path. A variable delay processor deskews the received signals based on the delay compensation amount.

Type: Application

Filed: November 1, 2006

Publication date: December 13, 2007

Applicant: FUJITSU LIMITED

Inventors: Naoki Kuwata, Tadashi Ikeuchi, Takatoshi Yagisawa
Image processing apparatus, image processing method, image processing program recording medium, color adjustment method, color adjustment device, and color adjustment control program recording medium

Patent number: 7292371

Abstract: An image processing apparatus inputs photographic image data containing dot-matrix pixels and converts the input pixels according to predetermined correspondence relationship information, so as to produce processed image data. A correspondence relationship holding unit of the apparatus holds correspondence relationship information, including a plurality of correspondence relationships, for the conversion, and applicable object information. The applicable object information includes, for each correspondence relationship, a respective condition. A correspondence relationship judging unit judges, for each of the input pixels, indicating whether a given pixel meets the condition of any of the correspondence relationships. An image data converting unit performs a conversion operation on the pixels of the input image data to produce processed image data.

Type: Grant

Filed: May 11, 2006

Date of Patent: November 6, 2007

Assignee: Seiko Epson Corporation

Inventors: Naoki Kuwata, Yoshihiro Nakami
Image processing apparatus, image processing method, image processing program recording medium, color adjustment method, color adjustment device, and color adjustment control program recording medium

Patent number: 7286265

Abstract: An image processing apparatus inputs photographic image data containing dot-matrix pixels and converts the input pixels according to predetermined correspondence relationship information, so as to produce processed image data. A correspondence relationship holding unit of the apparatus holds correspondence relationship information, including a plurality of correspondence relationships, for the conversion, and applicable object information. The applicable object information includes, for each correspondence relationship, a respective condition. A correspondence relationship judging unit judges, for each of the input pixels, indicating whether a given pixel meets the condition of any of the correspondence relationships. An image data converting unit performs a conversion operation on the pixels of the input image data to produce processed image data.

Type: Grant

Filed: May 11, 2006

Date of Patent: October 23, 2007

Assignee: Seiko Epson Corporation

Inventors: Naoki Kuwata, Yoshihiro Nakami
Output image data generating device & method of generating output image data

Publication number: 20070201740

Abstract: A CPU 200 selects multiple objective image data GD to be pasted on ornamental image data FD, analyzes the selected multiple objective image data GD, and rates the image qualities of the respective image data GD. The CPU 200 specifies the number of plural layout locations included in the ornamental image data FD and the priority order of the plural layout locations, and allocates the multiple objective image data GD to the plural layout locations in the ornamental image data FD, based on the specified priority order and the ratings of the multiple objective image data GD. The CPU 200 executes image quality adjustment with regard to the multiple objective image data GD allocated to the plural layout locations and pastes the quality-adjusted image data GD on the ornamental image data FD according to layout control information, so as to generate resulting output image data.

Type: Application

Filed: September 9, 2004

Publication date: August 30, 2007

Inventor: Naoki Kuwata
Image Processing Method and Image Processing Apparatus

Publication number: 20070201763

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 25, 2007

Publication date: August 30, 2007

Applicant: SEIKO EPSON CORPORATION

Inventors: Naoki KUWATA, Yoshihiro Nakami
Image processing apparatus, an image processing method, a medium on which an image processing control program is recorded, an image evaluation device, an image evaluation method and a medium on which an image evaluation program is recorded

Patent number: 7259894

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: December 22, 2003

Date of Patent: August 21, 2007

Assignee: Seiko Epson Corporation

Inventors: Naoki Kuwata, Yoshihiro Nakami
Image data interpolating apparatus and medium on which data interpolating program is recorded

Patent number: 7230742

Abstract: Even when a jaggy occurs in an original image, the image is accurately enlarged and a good image cannot be obtained as a result. In the case of performing pixel interpolation on an image in a dot matrix state, image data is entered in step 100, the whole image is scanned while shifting a marked pixel, and whether or not an edge exists in the direction of 45 or 135 degrees by using the marked pixel as a reference is detected in step 115. When an edge at 45 or 135 degrees exists, the edge is smoothed in the direction of either 45 degrees in step 120 or 135 degrees in step 125. After that, pixel interpolation is carried out irrespective of the presence or absence of an edge. Consequently, when there are irregular edges, it can be prevented that an image is directly subjected to pixel interpolation and a jaggy occurs.

Type: Grant

Filed: October 8, 1999

Date of Patent: June 12, 2007

Assignee: Seiko Epson Corporation

Inventors: Naoki Kuwata, Yoshihiro Nakami
Processing of moving picture data

Publication number: 20070067723

Abstract: This invention provides a moving picture data processing method for extracting a portion of moving picture data from moving picture data. The method comprises: a frame picture evaluation step of evaluating each of a plurality of frame picture data included in the moving picture data on a basis of a specific condition, for generating first picture evaluation values depending on the evaluations; and a moving picture data extraction step of extracting moving picture data including a plurality of frame picture data that meet a specific condition, in response to the first picture evaluation values.

Type: Application

Filed: March 3, 2005

Publication date: March 22, 2007

Inventors: Tatsuya Hosoda, Naoki Kuwata, Junichiro Shinozaki, Fumiaki Mukaiyama
Optical signal reception device and method of controlling optical signal reception

Publication number: 20070065157

Abstract: An optical signal reception device is disclosed that receives and demodulates an optical signal modulated by DQPSK and performs logical inversion and other controls to transit to the object reception state.

Type: Application

Filed: August 28, 2006

Publication date: March 22, 2007

Applicant: FUJITSU LIMITED

Inventors: Toru Katagiri, Takeshi Hoshida, Tomoo Takahara, Kentaro Nakamura, Naoki Kuwata
DQPSK optical receiver circuit

Publication number: 20070047972

Abstract: A DQPSK optical signal is split by the splitter 1 into Data 1 and Data 2 systems. For each system, a phase-modulated optical signal is converted into an intensity modulated electric signal, and clock reproduction and data reproduction are independently carried out for each system. While a phase difference occurs between the data of each system, a clock signal having an intermediate phase of the reproduced clock of each system is generated to latch data of both systems by using the clock signal. This results in the data of both systems having the same phase.

Type: Application

Filed: November 14, 2005

Publication date: March 1, 2007

Inventors: Tadashi Ikeuchi, Naoki Kuwata
Skew adjusting circuit and method for parallel signals

Publication number: 20070050658

Abstract: The skew adjusting circuit for parallel signals includes: a deskew signal generating circuit which generates a deskew signal by performing a predetermined logical operation and transmits the deskew signal to a receiving circuit; a skew detecting circuit which detects the skew by obtaining correlation between the deskew signal and the data signal and then obtaining an average value of the correlation; and a delay amount adjusting circuit which adjusts the skew by controlling the amount of delay of the data signal in accordance with the average value obtained by the skew detecting circuit. As a result, it is possible to reduce power consumption and circuit size, while suppressing the number of logic processing circuits to be added for skew adjustment, when parallel signals are transmitted in circuits which needs high-speed characteristic.

Type: Application

Filed: November 21, 2005

Publication date: March 1, 2007

Inventor: Naoki Kuwata
Image processing system, image processing method, and medium having an image processing control program recorded thereon

Patent number: 7155060

Abstract: Heretofore, an operator has been required to judge the type of image on a display and select any of various effect processings manually, thus automation has been impossible. By totaling luminance values of pixels into a luminance distribution which pixels have been selected by a thinning-out processing for image data (step S102) it becomes possible to count the number of colors used (step S104). As a result, if the number of colors used in image data is large, it can be judged that the image data is of a natural picture. Besides, a contrast enlarging process (step S110), a saturation highlighting process (step S112) and an edge highlighting process (S114), which are suitable for application to a natural picture on the basis of the results of such judgment, can be selected automatically while changing the respective highlighting degrees.

Type: Grant

Filed: June 14, 2004

Date of Patent: December 26, 2006

Assignee: Seiko Epson Corporation

Inventor: Naoki Kuwata
Image processing apparatus, an image processing method, a medium on which an image processing control program is recorded, an image evaluation device, an image evaluation method and a medium on which an image evaluation program is recorded

Publication number: 20060262354

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: July 24, 2006

Publication date: November 23, 2006

Inventors: Naoki Kuwata, Yoshihiro Nakami
Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them

Publication number: 20060263097

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: October 24, 2005

Publication date: November 23, 2006

Applicant: FUJITSU LIMITED

Inventors: Yuichi Akiyama, Takeshi Hoshida, Akira Miura, Hiroki Ooi, Jens Rasmussen, Kentaro Nakamura, Naoki Kuwata, Yoshinori Nishizawa, Tomoo Takahara
OPTICAL TRANSMITTING APPARATUS, OPTICAL RECEIVING APPARATUS, AND OPTICAL COMMUNICATION SYSTEM COMPRISING THEM

Publication number: 20060263098

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: December 30, 2005

Publication date: November 23, 2006

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
Image processing apparatus, an image processing method, a medium on which an image processing control program is recorded, an image evaluation device, an image evaluation method and a medium on which an image evaluation program is recorded

Publication number: 20060256384

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 SA3 10-SA330, image processing indicators based on object picture elements are determined, and optimum image processing can be performed automatically.

Type: Application

Filed: July 24, 2006

Publication date: November 16, 2006

Inventors: Naoki Kuwata, Yoshihiro Nakami
Code conversion circuit

Publication number: 20060215709

Abstract: A code conversion circuit is disclosed that converts a NRZ data signal into another NRZ data signal. The code conversion circuit includes a demultiplexer to demultiplex a NRZ data signal into plural parallel data signals, a conversion circuit to receive the demultiplexed parallel data signals, and a multiplexer to multiplex plural data signals output from the conversion circuit.

Type: Application

Filed: June 13, 2005

Publication date: September 28, 2006

Applicant: FUJITSU LIMITED

Inventor: Naoki Kuwata

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