Patents by Inventor Kiyotaka Ito

Kiyotaka Ito 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: 20240251799
    Abstract: In an antimicrobial substrate, a cured material of a binder containing a copper compound and a polymerization initiator is fixed onto a surface of a base material. At least a part of the copper compound is exposed on a surface of the cured material of the binder. A surface composition ratio of the cured material of the binder obtained by an energy dispersive X-ray analyzer is calculated on a basis of a peak intensity of a characteristic X-ray of a carbon element and a copper element that are a main constituent element of a resin component, and a weight ratio is C/Cu=28.0/1.0 to 200.0/1.0.
    Type: Application
    Filed: February 6, 2024
    Publication date: August 1, 2024
    Applicant: IBIDEN CO., LTD.
    Inventors: Katsutoshi HORINO, Kozo TAKADA, Kazuhiro ITO, Kohei OTSUKA, Kiyotaka TSUKADA
  • Patent number: 9042002
    Abstract: A phase difference error detecting unit detects a phase difference error component included in a phase difference component; a phase difference correcting unit corrects a first signal having the phase difference component as an angle of a cosine function and a second signal whose angle of the cosine function differs from that of the first signal by approximately ?/2 based on the detected phase difference error component; a phase operating unit operates a phase difference component from the first signal and the second signal corrected by the phase difference correcting unit; and the phase difference correcting unit obtains the corrected first signal and the corrected second signal by rotating a coordinate point represented by the first signal and the second signal on a polar coordinate plane by an angle corresponding to the phase difference error component.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: May 26, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kiyotaka Ito, Yasumori Hino
  • Publication number: 20150124577
    Abstract: When bnt denotes the length adjustment amount of a front edge portion of an nT recording mark (n: integer, T: channel clock length) and cnT denotes the length adjustment amount of a rear edge portion thereof with respect to a channel clock reference, d denotes a minimum value of n and k denotes a maximum value of n, the length adjustment amount bdT of a front edge portion of a shortest recording mark dT, the length adjustment amount cdT of a rear edge portion of the shortest recording mark dT, the length adjustment amount bkT of a front edge portion of a longest recording mark kT and the length adjustment amount ckT of a rear edge portion of the longest recording mark dT satisfy bdT+cdT>bkT+ckT.
    Type: Application
    Filed: October 1, 2013
    Publication date: May 7, 2015
    Applicant: Panasonic Intellectual Property Management Co., Inc.
    Inventors: Kiyotaka Ito, Yasumori Hino, Isao Kobayashi
  • Patent number: 8879375
    Abstract: The laser light source, the PBS, and the reference light mirror are arranged in such a manner as to simultaneously satisfy Lsig+LBS?s (Lld/m) (s: positive integer, m: positive integer), Lref+LBS?t (Lld/m) (t: positive integer), and u(Lld/m)?(?L/2)?Lsig?Lref?u(Lld/m)+(?L/2) (u: integer), where Lld represents an in-vacuum internal resonator length of the laser light source, LBS represents an in-vacuum-converted optical path length of a laser beam between the emission end surface of the laser light source and the PBS, Lsig represents an in-vacuum-converted optical path length of signal light between the PBS and the reflecting unit of the optical disk, Lref represents an in-vacuum-converted optical path length of reference light between the PBS and the reference light mirror, and ?L represents an interference permissible optical path length of the laser beam.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: November 4, 2014
    Assignee: Panasonic Corporation
    Inventors: Kiyotaka Ito, Yasumori Hino
  • Publication number: 20140109117
    Abstract: The laser light source, the PBS, and the reference light mirror are arranged in such a manner as to simultaneously satisfy Lsig+LBS?s (Lld/m) (s: positive integer, m: positive integer), Lref+LBS?t (Lld/m) (t: positive integer), and u(Lld/m)?(?L/2)?Lsig?Lref?u(Lld/m)+(?L/2) (u: integer), where Lld represents an in-vacuum internal resonator length of the laser light source, LBS represents an in-vacuum-converted optical path length of a laser beam between the emission end surface of the laser light source and the PBS, Lsig represents an in-vacuum-converted optical path length of signal light between the PBS, Lsig and the reflecting unit of the optical disk, Lref represents an in-vacuum-converted optical path length of reference light between the PBS and the reference light mirror, and ?L represents an interference permissible optical path length of the laser beam.
    Type: Application
    Filed: March 29, 2013
    Publication date: April 17, 2014
    Applicant: Panasonic Corporation
    Inventors: Kiyotaka Ito, Yasumori Hino
  • Publication number: 20130271823
    Abstract: A phase difference error detecting unit detects a phase difference error component included in a phase difference component; a phase difference correcting unit corrects a first signal having the phase difference component as an angle of a cosine function and a second signal whose angle of the cosine function differs from that of the first signal by approximately ?/2 based on the detected phase difference error component; a phase operating unit operates a phase difference component from the first signal and the second signal corrected by the phase difference correcting unit; and the phase difference correcting unit obtains the corrected first signal and the corrected second signal by rotating a coordinate point represented by the first signal and the second signal on a polar coordinate plane by an angle corresponding to the phase difference error component.
    Type: Application
    Filed: August 16, 2012
    Publication date: October 17, 2013
    Inventors: Kiyotaka Ito, Yasumori Hino
  • Patent number: 8488433
    Abstract: When ld0 denotes an initial optical path length that is a length of an optical path, along which the signal light travels, as converted using a refractive index in vacuum, lm0 denotes an initial optical path length that is a length of an optical path, along which the reference light travels, as converted using a refractive index in vacuum, ?l denotes a fluctuation width of a difference in optical path lengths between the signal light and the reference light as converted using a refractive index in vacuum, ?0 denotes a central oscillation wavelength of the wavelength-variable laser, and ?? denotes an oscillation wavelength variable range of the wavelength-variable laser, then an initial optical path difference |ld0?lm0| satisfies |ld0?lm0|>(?l/??)?0.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: July 16, 2013
    Assignee: Panasonic Corporation
    Inventors: Kiyotaka Ito, Yasumori Hino
  • Publication number: 20130128709
    Abstract: When ld0 denotes an initial optical path length that is a length of an optical path, along which the signal light travels, as converted using a refractive index in vacuum, lm0 denotes an initial optical path length that is a length of an optical path, along which the reference light travels, as converted using a refractive index in vacuum, ?l denotes a fluctuation width of a difference in optical path lengths between the signal light and the reference light as converted using a refractive index in vacuum, ?0 denotes a central oscillation wavelength of the wavelength-variable laser, and ?? denotes an oscillation wavelength variable range of the wavelength-variable laser, then an initial optical path difference |ld0?lm0| satisfies |ld0?lm0|>(?l/??)?0.
    Type: Application
    Filed: June 11, 2012
    Publication date: May 23, 2013
    Inventors: Kiyotaka Ito, Yasumori Hino
  • Patent number: 8400890
    Abstract: An optical information storage medium according to the present invention has at least one information storage layer. The optical information storage medium has a management area that stores at least one unit containing control information about the optical information storage medium. The control information includes a format number, which provides information about at least a write strategy type and a write pre-compensation type, and a write strategy parameter, which provides information about the magnitude of shift in an edge position, or variation in the pulse width, of a write pulse train to form a recording mark. And the value of the format number changes according to a combination of the write strategy type and the write pre-compensation type.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: March 19, 2013
    Assignee: Panasonic Corporation
    Inventors: Atsushi Nakamura, Naoyasu Miyagawa, Kiyotaka Ito, Mamoru Shoji, Yasumori Hino
  • Patent number: 8243571
    Abstract: A reproduction signal evaluation method according to the present invention relates to adjustment of an edge portion between a shortest mark and a shortest space in a data sequence including marks and spaces in combination that is recordable on an information recording medium. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: August 14, 2012
    Assignee: Panasonic Corporation
    Inventors: Kiyotaka Ito, Yasumori Hino, Harumitsu Miyashita, Isao Kobayashi
  • Patent number: 8233362
    Abstract: The present invention provides a measure for getting read/write control information stored within a space of a predetermined size in a format that ensures compatibility with media of a lower order or an older generation even if the size of the read/write control information increases significantly as the storage densities of information storage media rise in the near future. On an information storage medium, a data sequence is writable as a combination of marks and spaces. The medium has at least one information storage layer, which has an information storage area to store information and a control information area for use to perform a read/write operation on the at least one information storage layer. The control information area stores at least one set of control information, which includes a first kind of write pulse information including information to be used as a reference value and a second kind of write pulse information including information to be used as an offset value.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: July 31, 2012
    Assignee: Panasonic Corporation
    Inventors: Kiyotaka Ito, Mamoru Shoji, Yasumori Hino, Atsushi Nakamura, Naoyasu Miyagawa, Motoshi Ito
  • Patent number: 8203922
    Abstract: A reproduction signal evaluation method according to the present invention relates to adjustment of an edge portion between a shortest mark and a shortest space in a data sequence including marks and spaces in combination that is recordable on an information recording medium. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: June 19, 2012
    Assignee: Panasonic Corporation
    Inventors: Kiyotaka Ito, Yasumori Hino, Harumitsu Miyashita, Isao Kobayashi
  • Patent number: 8189322
    Abstract: The solid electrolytic capacitor according to the present invention comprises a capacitor element including an anode section, a cathode section, and a dielectric oxide film provided between the anode section and the cathode section. The solid electrolytic capacitor further comprises an anode lead frame connected to the anode section, a cathode lead frame connected to the cathode section, and an exterior resin covering the capacitor element and a part of the anode lead frame and cathode lead frame respectively. The anode section comprises an anode body including a sintered body of a valve action metal, and an average particle diameter of particles of the valve action metal of the anode body is 0.43 ?m or smaller.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: May 29, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Kenichiro Matsuzaki, Taro Matsuo, Kiyotaka Ito
  • Patent number: 8179760
    Abstract: A reproduction signal evaluation method according to the present invention relates to adjustment of an edge portion between a shortest mark and a shortest space in a data sequence including marks and spaces in combination that is recordable on an information recording medium. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: May 15, 2012
    Assignee: Panasonic Corporation
    Inventors: Kiyotaka Ito, Yasumori Hino, Harumitsu Miyashita, Isao Kobayashi
  • Patent number: 8144566
    Abstract: An information storage medium according to the present invention has n information storage layers (where n is an integer and n?3), on which data can be written with a laser beam and which are stacked one upon the other. Each of the n storage layers has a test write zone for determining the recording power of the laser beam. When those n layers are counted from the one that is located most distant from the surface of the medium on which the laser beam is incident, there is a bigger radial location difference between the outer peripheral end of the inner one of the test write zones of ith and (i+1)th information storage layers (where i is an integer that satisfies 2?i?n?1) and the inner peripheral end of the other outer test write zone than between the outer peripheral end of the inner one of the test write zones of jth and (j+1)th information storage layers (where j is an integer that satisfies 1?j?i?1) and the inner peripheral end of the other outer test write zone.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: March 27, 2012
    Assignee: Panasonic Corporation
    Inventors: Mamoru Shoji, Kiyotaka Ito
  • Publication number: 20120057448
    Abstract: A writing method according to the present invention is a method for writing a data sequence as a combination of marks and spaces on an information recording medium by condensing a laser beam through a lens. The writing method is characterized in that a cooling pulse for recording a mark that is even shorter than the limit of optical resolution of the laser beam and another cooling pulse for recording a mark that is still longer than the limit of the optical resolution of the laser beam are applied under mutually different conditions.
    Type: Application
    Filed: March 7, 2011
    Publication date: March 8, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Kiyotaka Ito, Yasumori Hino, Naoyasu Miyagawa, Atsushi Nakamura
  • Publication number: 20110107134
    Abstract: The present invention provides a measure for getting read/write control information stored within a space of a predetermined size in a format that ensures compatibility with media of a lower order or an older generation even if the size of the read/write control information increases significantly as the storage densities of information storage media rise in the near future. On an information storage medium, a data sequence is writable as a combination of marks and spaces. The medium has at least one information storage layer, which has an information storage area to store information and a control information area for use to perform a read/write operation on the at least one information storage layer. The control information area stores at least one set of control information, which includes a first kind of write pulse information including information to be used as a reference value and a second kind of write pulse information including information to be used as an offset value.
    Type: Application
    Filed: March 5, 2010
    Publication date: May 5, 2011
    Inventors: Kiyotaka Ito, Mamoru Shoji, Yasumori Hino, Atsushi Nakamura, Naoyasu Miyagawa, Motoshi Ito
  • Publication number: 20110085428
    Abstract: An information storage medium according to the present invention has n information storage layers (where n is an integer and n?3), on which data can be written with a laser beam and which are stacked one upon the other. Each of the n storage layers has a test write zone for determining the recording power of the laser beam. When those n layers are counted from the one that is located most distant from the surface of the medium on which the laser beam is incident, there is a bigger radial location difference between the outer peripheral end of the inner one of the test write zones of ith and (i+1)th information storage layers (where i is an integer that satisfies 2?i?n?1) and the inner peripheral end of the other outer test write zone than between the outer peripheral end of the inner one of the test write zones of jth and (j+1)th information storage layers (where j is an integer that satisfies 1?j?i?1) and the inner peripheral end of the other outer test write zone.
    Type: Application
    Filed: December 20, 2010
    Publication date: April 14, 2011
    Inventors: Mamoru Shiji, Kiyotaka Ito
  • Publication number: 20110051592
    Abstract: An optical information storage medium according to the present invention has at least one information storage layer. The optical information storage medium has a management area that stores at least one unit containing control information about the optical information storage medium. The control information includes a format number, which provides information about at least a write strategy type and a write pre-compensation type, and a write strategy parameter, which provides information about the magnitude of shift in an edge position, or variation in the pulse width, of a write pulse train to form a recording mark. And the value of the format number changes according to a combination of the write strategy type and the write pre-compensation type.
    Type: Application
    Filed: March 1, 2010
    Publication date: March 3, 2011
    Inventors: Atsushi Nakamura, Naoyasu Miyagawa, Kiyotaka Ito, Mamoru Shoji, Yasumori Hino
  • Patent number: 7885171
    Abstract: An information storage medium according to the present invention has n information storage layers (where n is an integer and n?3), on which data can be written with a laser beam and which are stacked one upon the other. Each of the n storage layers has a test write zone for determining the recording power of the laser beam. When those n layers are counted from the one that is located most distant from the surface of the medium on which the laser beam is incident, there is a bigger radial location difference between the outer peripheral end of the inner one of the test write zones of ith and (i+1)th information storage layers (where i is an integer that satisfies 2?i?n?1) and the inner peripheral end of the other outer test write zone than between the outer peripheral end of the inner one of the test write zones of jth and (j+1)th information storage layers (where j is an integer that satisfies 1?j?i?1) and the inner peripheral end of the other outer test write zone.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: February 8, 2011
    Assignee: Panasonic Corporation
    Inventors: Mamoru Shoji, Kiyotaka Ito