Patents by Inventor Naoto Takeda

Naoto Takeda 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).

  • Publication number: 20220292229
    Abstract: A material design apparatus is provided that can derive an optimal solution of a design condition of a polymer that satisfies desired and required physical properties.
    Type: Application
    Filed: September 1, 2020
    Publication date: September 15, 2022
    Inventors: Naoto AONUMA, Shimpei TAKEMOTO, Eriko TAKEDA, Yoshishige OKUNO, Hiroki KURAMOTO, Yasuaki KAWAGUCHI
  • Publication number: 20220261510
    Abstract: A material design system includes an expert terminal capable of using a model learning interface for performing machine learning of a model that inputs and outputs a correspondence between a design condition and a material property value of the material to be designed, and a plurality of general-purpose terminals configured to use a material design interface for estimating the material property value based on the design condition or estimating the design condition based on the material property value, by using a learned model that is created by the expert terminal and is for the material to be designed.
    Type: Application
    Filed: July 17, 2020
    Publication date: August 18, 2022
    Inventors: Shimpei TAKEMOTO, Katsuki OKUNO, Takuya MINAMI, Naoto AONUMA, Eriko TAKEDA, Yoshishige OKUNO
  • Publication number: 20220243126
    Abstract: Provided are a new phosphor having emission characteristics different from the conventional nitride or oxynitride phosphor, a manufacturing method, and a light-emitting device. In an embodiment, the phosphor may include inorganic substance having crystal represented by A26(D, E)51X86 including at least A, D, X (A is at least one kind of element selected from Mg, Ca, Sr, and Ba; and D is Si, and X is at least one kind of element selected from O, N, and F); and further includes, if necessary, E (E is at least one kind of element selected from B, Al, Ga, and In) wherein the crystal further includes M (M is at least one kind of element selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb). Upon irradiation of excitation source, the maximum value of emission peak in a wavelength range from 630 nm to 850 nm may occur.
    Type: Application
    Filed: March 31, 2020
    Publication date: August 4, 2022
    Applicant: National Institute for Materials Science
    Inventors: Naoto HIROSAKI, Takashi TAKEDA, Shiro FUNAHASHI
  • Publication number: 20210215556
    Abstract: A method for cleaning a receptor layer of a surface stress sensor according to an embodiment of the present invention includes, in a surface stress sensor that detects a change in surface stress of a thin film, the change being caused by a receptor layer disposed on a surface of the thin film, causing at least a part of a surface region of the thin film to generate heat or supplying heat to the receptor layer from the outside of the surface stress sensor. This makes it possible to easily perform efficient cleaning of a surface stress sensor such as a sensor that performs detection using a piezoresistor while avoiding structural complications as much as possible.
    Type: Application
    Filed: August 28, 2019
    Publication date: July 15, 2021
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Genki YOSHIKAWA, Takahiro NEMOTO, Makito NAKATSU, Naoto TAKEDA, Kota SHIBA, Kosuke MINAMI
  • Patent number: 7936650
    Abstract: An attenuation-amount adjusting circuit includes: a light irradiating unit that alternately irradiates a laser beam of a writing level and a laser beam of a readout level on an optical disk that has a groove formed by a wobble pattern and plural markers indicating physical positions in the groove; a light receiving unit that receives reflected light of the laser beam irradiated on the optical disk and converts the reflected light into a reproduction signal; and a writing-waveform attenuating unit that attenuates an amplitude level of a writing waveform corresponding to the reflected light of the laser beam of the writing level in the reproduction signal according to a position from a rising edge of the writing waveform.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: May 3, 2011
    Assignee: Sony Corporation
    Inventor: Naoto Takeda
  • Patent number: 7840007
    Abstract: A digital data false alteration detection program causes a computer to execute (a) a step (S1) of dividing digital data into a plurality of smaller block data, (b) a step (S2) of extracting noise inherent to a digital data acquisition device for each of the small block data, (c) a step (S3) of calculating correlation of the noise between adjacent small block data, and (d) a step (S4) of detecting small block data having noise correlation lower than a level predetermined for the surrounding small block data, as falsely altered data.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: November 23, 2010
    Assignees: Fuso Precision Co., Ltd., Naigai Process Co., Ltd.
    Inventors: Naoto Takeda, Masamichi Taniguchi, Kunio Taniguchi, Kiyotaka Yamamoto
  • Patent number: 7321448
    Abstract: In a method for improving the color reproducibility of printed matter to be produced by a printing press in proof print produced by a proof press, a look-up table containing converted values of image data over the entire color space with respect to the proof press is created, the look-up table is corrected based on the color of a printing paper for the printing press and a paper exposed area factor in the proofing, and proof print is created by the use of the corrected look-up table.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: January 22, 2008
    Assignees: Sagawa Printing Co., Ltd., Fuso Precision Co., Ltd.
    Inventors: Nobukatsu Nishida, Kazuyuki Uragami, Makoto Ito, Naoto Takeda
  • Patent number: 7263043
    Abstract: An optical disk drive for optimizing laser power to be used at the time of recording operation. In a DVD-R drive and a DVD-RW drive, a controller performs OPC to set recording power and records RMD serving as recording management data in an RMA serving as a recording management area. The RMD are verified. When the RMD can be read, the number of PI errors in the RMD is detected. If the number of PI errors is equal to or less than an allowable value, data are recorded in a data area at that recording power. If the number of PI errors exceeds the allowable value, OPC is again performed, to thereby reset the recording power.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: August 28, 2007
    Assignee: TEAC Corporation
    Inventors: Mitsuo Watanabe, Naoto Takeda
  • Publication number: 20070189146
    Abstract: An attenuation-amount adjusting circuit includes: a light irradiating unit that alternately irradiates a laser beam of a writing level and a laser beam of a readout level on an optical disk that has a groove formed by a wobble pattern and plural markers indicating physical positions in the groove; a light receiving unit that receives reflected light of the laser beam irradiated on the optical disk and converts the reflected light into a reproduction signal; and a writing-waveform attenuating unit that attenuates an amplitude level of a writing waveform corresponding to the reflected light of the laser beam of the writing level in the reproduction signal according to a position from a rising edge of the writing waveform.
    Type: Application
    Filed: February 7, 2007
    Publication date: August 16, 2007
    Applicant: Sony Corporation
    Inventor: Naoto Takeda
  • Patent number: 7154827
    Abstract: An optical disk apparatus for recording data on an optical disk. Prior to recording data on the optical disk, a controller records test data in a test area of the optical disk, thereby optimizing write power. After having recorded the test data, the controller computes a difference between jitter or an error rate obtained when test data are overwritten at write power higher than that used for recording test data and jitter or an error rate obtained when test data are overwritten at write power lower than that used for recording the test data. A jitter or error rate difference is detected while write power is changed. Write power at which the jitter or error rate difference is smaller than or equal to a predetermined threshold value is selected as optimum write power, and data are recorded in a data area.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: December 26, 2006
    Assignee: TEAC Corporation
    Inventors: Yuhi Tokita, Naoto Takeda
  • Publication number: 20060251296
    Abstract: In a method for improving the color reproducibility of printed matter to be produced by a printing press in proof print produced by a proof press, a look-up table containing converted values of image data over the entire color space with respect to the proof press is created, the look-up table is corrected based on the color of a printing paper for the printing press and a paper exposed area factor in the proofing, and proof print is created by the use of the corrected look-up table.
    Type: Application
    Filed: March 16, 2006
    Publication date: November 9, 2006
    Inventors: Nobukatsu Nishida, Kazuyuki Uragami, Makoto Ito, Naoto Takeda
  • Patent number: 7133340
    Abstract: An optical disc apparatus in which the inclination of an optical axis of laser light relative to an optical disc is adjusted. When data is recorded, laser light is irradiated at recording power in mark periods and irradiated at reproducing power or erasing power in space periods. Immediately after the beginning of the mark periods, no pits are ye formed even though recording power is applied and the amount of reflected light has a level corresponding to the inclination of the optical axis of laser light relative to the optical disc without influence exerted by the pits. Also in the space period, the amount of reflected light has a level corresponding to the inclination of the optical axis of laser light relative to the optical disc. By sampling the reflected light signal at the instant following to the beginning of the mark period or space periods, the inclination is adjusted so as to maximize the sampled signal level.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: November 7, 2006
    Assignee: TEAC Corporation
    Inventor: Naoto Takeda
  • Patent number: 7123379
    Abstract: In a method for improving the color reproducibility of printed matter to be produced by a printing press in proof print produced by a proof press, a look-up table containing converted values of image data over the entire color space with respect to the proof press is created, the look-up table is corrected based on the color of a printing paper for the printing press and a paper exposed area factor in the proofing, and proof print is created by the use of the corrected look-up table.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: October 17, 2006
    Assignees: Sagawa Printing Co., Ltd., Fusoc Precision Co., Ltd.
    Inventors: Nobukatsu Nishida, Kazuyuki Uragami, Makoto Ito, Naoto Takeda
  • Patent number: 7116617
    Abstract: An optical disk device in which the laser light power for writing data onto an optical disk is optimized. Test data is written onto an optical disk while laser light power is varied and the laser light power is optimized based on the quality of replayed signals of the test data. The space value of the replayed signal of the test data is detected and, when the space value is a value which should not exist, it is judged that 3T mark period is missing or excessively written and the laser light power in which such a space value is obtained is removed from the candidates for the optimum laser light power. Also, jitter and error rate of the replayed signal are detected. Even when the jitter is at a desirable value, if the error rate is greater than or equal to a predetermined value, the laser light power in which such an error rate is obtained is removed from consideration as a possible optimum laser light power.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: October 3, 2006
    Assignee: Teac Corporation
    Inventor: Naoto Takeda
  • Patent number: 7106673
    Abstract: An optical disk recording apparatus capable of recording data in an optical disk using an optimized recording power is provided. Data formed beforehand in an embossed part of the optical disk are reproduced with a predetermined reproducing power, using an optical pick up unit, and an evaluation index is determined by an evaluation index determining part of a control unit from an envelope of the signal which is produced with the reproducing power. Test data are recorded in a test area of the optical disk by varying the recording power and the test data thus recorded are reproduced with the reproducing power to determine the evaluation index. A control unit sets the evaluation index obtained from the embossed part as a target evaluation index. Desired data are recorded with the recording power corresponding to the target evaluation index.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: September 12, 2006
    Assignee: TEAC Corporation
    Inventor: Naoto Takeda
  • Patent number: 7095691
    Abstract: The present invention provides a data-recordable optical disk device. Test data is recorded in a predetermined area of an optical disk while varying recording power level, and an optimum recording power level is selected based on reproduced signal quality of the test data. When the optimum recording power level does not exceed an allowable recording power level of the laser diode, data is recorded at that optimum recording power level. When the optimum recording power level exceeds the allowable recording power level of the laser diode, the recording strategy is changed to a low-power strategy. A low-power strategy is, for example, a strategy having an increased recording pulse width compared to that of a standard strategy. An optimum recording power level is selected for the low-power strategy, and data is subsequently recorded.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: August 22, 2006
    Assignee: TEAC Corporation
    Inventor: Naoto Takeda
  • Patent number: 7054237
    Abstract: An optical disk device for driving an optical disk having an emboss section and a data section comprises an optical pickup for replaying address information by irradiating a laser beam onto the emboss section of an optical disk and writing data by irradiating the laser beam onto the data section of the optical disk, and a control unit for controlling the focus position when address information is replayed at the emboss section and the focus position when data are written onto the data section to a common focus position. By using the common focus position as the focus position when the emboss section is replayed and as the focus position when the data are written to the data section, it is possible to eliminate any need for rapidly switching the focus position at the boundary between the emboss section and the data section.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: May 30, 2006
    Assignee: TEAC Corporation
    Inventors: Norihiro Osanai, Naoto Takeda
  • Patent number: 7050372
    Abstract: An optical disk device which reproduces address information embossed and formed on an optical disk. Return light of laser light is detected by a photodetector which is split into at least two components along the radial direction and signals representing the return light are output. Address information is reproduced by selectively switching between a summation signal and a difference signal between two signals. When there is a focus deviation, the summation signal of two signals is used to reproduce the address information and when the optical disk is tilted, the difference signal of two signals is used to reproduce the address information.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: May 23, 2006
    Assignee: TEAC Corporation
    Inventor: Naoto Takeda
  • Patent number: 7035184
    Abstract: An optical disk apparatus which can record data by means of transition between an amorphous state and a crystalline state and enables overwriting of data. Test data are recorded into a test area of an optical disk by radiating a laser beam of recording power. The recorded test data are erased by radiating a laser beam of erasing power to the test area of the optical disk while a rotational speed of the optical disk is varied. An erasure performance for erasing the test data is computed at each rotational speed, and the erasure performance is compared with the predetermined threshold value. The higher the rotational speed, the lower the erasure performance. From among the rotational speeds at which superior erasure performance is achieved, the maximum rotational speed is selected. Data are written over the data area of the optical disk at the thus-selected maximum rotational speed.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: April 25, 2006
    Assignee: TEAC Corporation
    Inventor: Naoto Takeda
  • Patent number: 7012718
    Abstract: An original reference value table containing converted values of image data on the entire color space is made based on known look-up tables of a printer and a correction printer, and a reference value table is wholly or partly corrected adequately so that the results of printing performed by the correction printer by referring to the original reference value table may be similar to the results of printing performed by the printer while the mutual non-linearity of converted values held in the reference value table is maintained, thus making a reference value table with an improved precision of color reproduction.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: March 14, 2006
    Assignees: Fuso Precision Co., Ltd., Sagawa Printing Co., Ltd.
    Inventors: Nobukatsu Nishida, Kazuyuki Uragami, Makoto Ito, Naoto Takeda