Patents by Inventor Masakazu Ikeda

Masakazu Ikeda 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: 20140113350
    Abstract: Provided is a technique for enabling a liquid of microbial cells having an enzymatic activity to be easily stored and used. The technique is a method for killing a microorganism while maintaining the enzyme titer of a microbial cell liquid, characterized by including adjusting the pH of a liquid of microbial cells having an enzymatic activity, and then performing a heating treatment of the liquid, and also the technique is a method for killing a microorganism while maintaining the enzyme titer of a microbial cell liquid, characterized by including adding a carbohydrate to a liquid of microbial cells having an enzymatic activity, and then performing a heating treatment of the liquid.
    Type: Application
    Filed: May 18, 2012
    Publication date: April 24, 2014
    Applicant: Kabushiki Kaisha Yakult Honsha
    Inventors: Masakazu Ikeda, Tadashi Sato, Keiko Kasaha, Masahiko Ito
  • Patent number: 8681591
    Abstract: A semiconductor device mounted in an optical disk apparatus controls writing and reading of data in and from an optical disk. The device performs first processing for adjusting a write strategy in such a manner that based on error information corresponding to a shift in the phase of a reproduction signal with respect to a channel clock signal for data reproduction, which is generated based on the reproduction signal read from the optical disk, the value of the error information related to a plurality of recording marks to be evaluated becomes minimum as a whole. The device also performs second processing for adjusting a write strategy in such a manner that the value of the error information related to a desired recording mark becomes small.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: March 25, 2014
    Assignee: Renesas Electronics Corporation
    Inventors: Atsushi Neo, Yasuo Mutsuro, Masakazu Ikeda, Junichi Tanjima
  • Publication number: 20140038269
    Abstract: An object of the present invention is to develop a means capable of maintaining the enzymatic activity of a microorganism even in a dry state. Provided is a method for producing a dry microbial cell powder maintaining an enzyme titer, characterized by comprising adding a carbohydrate to a liquid of microbial cells having an enzymatic activity and then drying the liquid. Also provided is a dry microbial cell powder obtained by the method.
    Type: Application
    Filed: April 12, 2012
    Publication date: February 6, 2014
    Applicant: Kabushiki Kaisha Yakult Honsha
    Inventors: Masakazu Ikeda, Hiroshi Ishikawa, Kisaku Shimura, Yuki Fukuda, Masahiko Ito
  • Patent number: 8593919
    Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: November 26, 2013
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Masakazu Ikeda, Koichiro Nishimura, Yutaka Nagai
  • Patent number: 8593264
    Abstract: A remote lighting control system is for remote lighting control of a plurality of discharge lamps. This system has the installed electronic ballasts of each discharge lamp. Each electronic ballast has a transceiver and a controller, the transceiver exchanges control information with the controller. The control command contains the identifiable information to specify one of a plurality of electronic ballasts. When the transmitter is received the control command, the transceiver transfers the received control command to other electronic ballasts further. Moreover, if the control command is the one that the identifiable information specifies own ballasts, the control information based on the received control command is send to own controller, and the controller control the discharge lamp. According to this system, when a lot of lamps was arranged the factory etc. comparatively widely, the user's remote control is not limited to the narrow scope.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: November 26, 2013
    Assignees: Eye Lighting Systems Corporation, Nippon Antenna Co., Ltd.
    Inventors: Yoshihisa Umezawa, Ichirou Terayama, Masakazu Ikeda, Yusuke Tainaka
  • Patent number: 8588043
    Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: November 19, 2013
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Masakazu Ikeda, Koichiro Nishimura, Yutaka Nagai
  • Patent number: 8582404
    Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: November 12, 2013
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Masakazu Ikeda, Koichiro Nishimura, Yutaka Nagai
  • Publication number: 20130213228
    Abstract: The hydrogen separation membrane module according to the present invention is used for separating hydrogen from a gas to be treated containing hydrogen, and is provided with a tubular hydrogen separation membrane being selectively permeable to hydrogen, a casing for the hydrogen separation membrane, an insertion member being arranged on the inside of the hydrogen separation membrane and having an outer surface that defines a flow path of the gas to be treated together with an inner surface of the hydrogen separation membrane, a gas supply port for supplying the gas to be treated to the inside of the hydrogen separation membrane, a gas discharge port for discharging a non-permeating gas that does not permeate the hydrogen separation membrane, from a downstream side of the flow path, and a hydrogen discharge port provided in the casing, for discharging hydrogen having permeated the hydrogen separation membrane.
    Type: Application
    Filed: May 31, 2011
    Publication date: August 22, 2013
    Applicants: JAPAN PETROLEUM ENERGY CENTER, JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Masakazu Ikeda, Shunsuke Maekawa, Kaori Takano
  • Patent number: 8514681
    Abstract: A recording medium, an address generating method, an address detection method and a recording and reproduction apparatus capable of extending the wobble address without any considerable wobble restructuring are disclosed. Virtual bits not recorded in the disc and expressed by the difference of the rule or the presence or absence of the information embedded in a part or the whole of the wobble address are generated. Thus, the extended address can be obtained without changing the number of bits of the address embedded in the wobble.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: August 20, 2013
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Masakazu Ikeda, Koichiro Nishimura, Yutaka Nagai
  • Patent number: 8488437
    Abstract: In a recording medium, an extension address is obtained without changing the number of bits of the address embedded in the wobble. The wobble address is partially or wholly encoded to embed the address information. At the time of reproducing the address information, the original address information is obtained by restoring the embedded information by the decoding process.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: July 16, 2013
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Akio Fukushima, Masakazu Ikeda, Koichi Hirose, Koichiro Nishimura
  • Publication number: 20130026946
    Abstract: An LED drive circuit is an LED dive circuit that receives an alternating voltage to drive an LED, and includes a current remove portion that removes a current from a current supply line that supplies an LED drive current to the LED. If an input current to the LED drive circuit is an unnecessary current, the LED does not light because of current removal by the current remove portion. If the input current to the LED drive circuit turns into the LED drive current from the unnecessary current, the current remove portion decreases the amount of current removed.
    Type: Application
    Filed: August 6, 2012
    Publication date: January 31, 2013
    Inventors: Yasuhiro MARUYAMA, Hiroyuki SHOJI, Mitsuru MARIYAMA, Masakazu IKEDA, Hirohisa WARITA, Katsumi INABA, Naoki FUKUNAGA
  • Patent number: 8331214
    Abstract: In a recording medium, an extension address is obtained without changing the number of bits of the address embedded in the wobble. The wobble address is partially or wholly encoded to embed the address information. At the time of reproducing the address information, the original address information is obtained by restoring the embedded information by the decoding process.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: December 11, 2012
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Akio Fukushima, Masakazu Ikeda, Koichi Hirose, Koichiro Nishimura
  • Publication number: 20120307607
    Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.
    Type: Application
    Filed: November 10, 2010
    Publication date: December 6, 2012
    Inventors: Masakazu Ikeda, Koichiro Nishimura, Yutaka Nagai
  • Publication number: 20120307608
    Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.
    Type: Application
    Filed: November 10, 2010
    Publication date: December 6, 2012
    Inventors: Masakazu Ikeda, Koichiro Nishimura, Yutaka Nagai
  • Publication number: 20120307609
    Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.
    Type: Application
    Filed: November 10, 2010
    Publication date: December 6, 2012
    Inventors: Masakazu Ikeda, Koichiro Nishimura, Yutaka Nagai
  • Publication number: 20120306394
    Abstract: A switching power supply circuit includes a full-wave rectification circuit that performs full-wave rectification of an AC input voltage so as to generate a primary voltage, a transformer that transforms the primary voltage into a secondary voltage utilizing electromagnetic induction between first and second isolated windings, a rectifying and smoothing circuit that generates a DC output voltage from the secondary voltage so as to supply the DC output voltage to a load, a primary current control circuit that performs on/off control of primary current based on a result of comparison between a primary current detection voltage corresponding to the primary current flowing in the first winding and a first reference voltage, and a reference voltage correction circuit for monitoring an on-duty ratio of secondary current flowing in the second winding so as to correct the first reference voltage.
    Type: Application
    Filed: June 5, 2012
    Publication date: December 6, 2012
    Inventor: Masakazu IKEDA
  • Publication number: 20120300609
    Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.
    Type: Application
    Filed: November 10, 2010
    Publication date: November 29, 2012
    Inventors: Masakazu Ikeda, Koichiro Nishimura, Yutaka Nagai
  • Patent number: 8295134
    Abstract: As a synchronization signal pattern to be added, a pattern is generated (second SYNC pattern), which has a pattern that breaks a maximum run inserted in a pattern excluding a minimum run is used so that intersymbol interference does not occur readily on a high-density disc, and addition processing of a conventional synchronization signal pattern (first SYNC pattern) is switched according to identification information indicating whether or not a high-density disc for generation.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: October 23, 2012
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventor: Masakazu Ikeda
  • Patent number: 8289820
    Abstract: Recording capacity per layer is detected from a disc and bit allocation of wobble addresses in a conventional optical disc and bit allocation in a high-density optical disc are controlled selectively to detect physical position addresses on the disc. Address detection can be performed for two kinds of discs which are equal in structure of addresses embedded in wobbles but different in bit allocation of addresses.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: October 16, 2012
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Masakazu Ikeda, Akio Fukushima, Koichi Hirose
  • Publication number: 20120230173
    Abstract: An optical disk reproducing apparatus is provided which is capable of supporting even a situation in which a reproduction signal characteristic is changed due to a factor other than recording density of an optical disk by using PRML of different constrained length and capable of improving reading accuracy. The optical disk reproducing apparatus includes a PRML circuit of a first constrained length (for example, 4) and a PRML circuit of a second constrained length (for example, 5). Equalization error values obtained during calculation of equalization learning in respective circuits are compared with each other in a determination circuit. Switching control of a switch is performed so that an output of one of the PRML circuits having a smaller equalization error value is selected.
    Type: Application
    Filed: May 17, 2012
    Publication date: September 13, 2012
    Inventors: Yusuke NAKAMURA, Masakazu IKEDA