Patents by Inventor Kentaro Takahashi

Kentaro Takahashi 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: 20090224050
    Abstract: A method for processing a digital signal obtained in a barcode reading operation comprises a step of applying a wavelet transformation to the digital signal. The noise threshold at each level of the wavelet transformation is determined from a total transfer function in the analogue processing stage, and the coefficients are set to be zero if less than the noise threshold.
    Type: Application
    Filed: April 23, 2009
    Publication date: September 10, 2009
    Applicants: Optoelectronics Co., Ltd., Opticon, Inc.
    Inventors: Hiroshi Hayakawa, Susumu Nakano, Kentaro Takahashi
  • Patent number: 7582388
    Abstract: A non-aqueous solvent secondary battery with a high initial charge/discharge capacity and excellent charge/discharge characteristics at high temperature, having a positive electrode containing a positive electrode active material capable of reversibly occluding and releasing lithium, a negative electrode containing a negative electrode active material capable of reversibly occluding and releasing lithium and a non-aqueous solvent electrolyte containing (1) acrylic acid anhydride, and (2) an aromatic compound having at least one electron donating group, wherein the electron donating group comprises at least one member selected from any of the alkyl group, alkoxy group, alkylamino group and amine, provided that each of the alkyl group, alkoxy group and alkylamino group includes a halogen substituted group and a cycloaliphatic group.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: September 1, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Kentaro Takahashi
  • Publication number: 20090181311
    Abstract: The preservation performance of a nonaqueous electrolyte secondary cell charged to high potential is improved while the initial capacity and the cycle property of the cell are also improved. The nonaqueous electrolyte secondary cell includes: a positive electrode having lithium phosphate and a positive electrode active material containing lithium cobalt compound oxide and lithium manganese nickel compound oxide having a layer structure, the lithium cobalt compound oxide having at least zirconium and magnesium added in LiCoO2; a negative electrode having a negative electrode active material; and a nonaqueous electrolyte having a nonaqueous solvent and an electrolytic salt. The potential of the positive electrode is more than 4.3 V and 5.1 V or less based on lithium. The nonaqueous electrolyte contains vinylene carbonate as the nonaqueous solvent and, as the electrolytic salt, at least one of lithium bis(pentafluoroethane sulfonyl)imide and lithium bis(trifluoromethane sulfonyl)imide at 0.1 M or more and 0.
    Type: Application
    Filed: May 30, 2007
    Publication date: July 16, 2009
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Masato Iwanaga, Kentaro Takahashi, Yukihiro Oki, Yoshihiko Ikeda, Akira Kinoshita, Nobumichi Nishida
  • Publication number: 20090169976
    Abstract: A polymer electrolyte secondary cell with high safety against overcharging includes a positive electrode containing a positive electrode active material; a negative electrode containing a negative electrode active material; a polymer electrolyte containing a non-aqueous solvent, an electrolyte salt, and a polymer. The non-aqueous solvent contains a tertiary carboxylic acid ester shown in Formula 1 below. The polymer is formed from monomers containing alkylene glycol (meth)acrylate and/or N,N-dialkyl (meth)acrylamide. where R1 to R4 each denote a straight-chained or branched alkyl group having 4 or less carbon atoms and may be the same or different.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 2, 2009
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Kentaro Takahashi
  • Publication number: 20090170007
    Abstract: A non-aqueous electrolyte secondary cell is provided having enhanced safety against overcharge and reduced self-discharge. The non-aqueous electrolyte secondary cell includes: a positive electrode having a positive electrode active material; a negative electrode having a negative electrode active material; and a non-aqueous electrolyte containing a non-aqueous solvent and electrolytic salt. The non-aqueous solvent contains 20 to 80 volume % tertiary carboxylic acid ester represented by formula 1 at 25° C. and 1 atm. The non-aqueous electrolyte contains an alkylbenzene compound and/or a halogenated benzene compound. where R1 to R4 each denote a straight-chained or branched alkyl group having 4 or less carbon atoms and may be the same or different.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 2, 2009
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Kentaro Takahashi
  • Patent number: 7526130
    Abstract: A method for processing a digital signal obtained in a barcode reading operation comprises a step of applying a wavelet transformation to the digital signal. The noise threshold at each level of the wavelet transformation is determined from a total transfer function in the analogue processing stage, and the coefficients are set to be zero if less than the noise threshold.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: April 28, 2009
    Assignee: Optoelectronics Co., Ltd.
    Inventors: Hiroshi Hayakawa, Susumu Nakano, Kentaro Takahashi
  • Patent number: 7524588
    Abstract: A nonaqueous secondary battery includes a negative electrode using a negative electrode active material containing a carbonaceous material; a positive electrode using a positive electrode active material capable of reversibly intercalating and deintercalating lithium; and a nonaqueous electrolyte. The nonaqueous electrolyte contains: (1) a vinyl ethylene carbonate derivative represented by Formula (I): wherein R1 to R6 independently represent a hydrogen atom or an alkyl group having a carbon number of 1 to 4; (2) a cyclic acid anhydride; and (3) at least one cyclic ether derivative selected from the group consisting of 1,3-dioxanes, 1,3-dioxolanes and derivatives thereof.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: April 28, 2009
    Assignee: Sanyo Electric C.o., Ltd.
    Inventor: Kentaro Takahashi
  • Publication number: 20090087752
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode active material; a negative electrode containing a negative electrode active material; and a non-aqueous electrolyte containing a non-aqueous solvent and an electrolyte salt. In order to improve the high-temperature storage characteristics and safety against overcharge due to high-rate charging of the battery, the positive electrode active material contains a layered lithium-transition metal composite oxide containing at least one of Mg, Al, Ti, and Zr. Furthermore, the non-aqueous electrolyte contains 3 to 80% by mass of a tertiary carboxylic acid ester expressed by Chemical Formula 2 below, based on the total mass of the non-aqueous solvent: where R1 to R4 are independent of each other and each represents an alkyl group having 4 or less carbon atoms and being able to be branched.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 2, 2009
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Kentaro TAKAHASHI
  • Patent number: 7503497
    Abstract: A system and method of extracting data from a barcode or similar symbol in relatively large ambient light is disclosed. The system uses a slice signal that follows the upper part of a negative offset signal, or the lower part of a positive offset signal, depending upon the value of the input signal. The system may be implemented in digital or analog hardware.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: March 17, 2009
    Assignees: Optoelectronics Co., Ltd., Opticon, Inc.
    Inventors: Kentaro Takahashi, Hiroshi Hayakawa
  • Patent number: 7483194
    Abstract: A module for an optical information reader, wherein a light emitting unit (22), a collimator lens (23), a vibration mirror (31) for scanning, a condensing mirror (40), and a light receiving unit (50) are installed in a module casing (10) for modularization, and a lens-barrel hole (13b) opening at one end thereof and having an aperture (13a) formed at the tip face thereof is provided in the module casing (10), the collimator lens (23) is installed in the lens-barrel hole (13b) so as to come into contact with the tip bottom part thereof, and the light emitting unit (22) is press-fitted into the press-fit part (13c) of the lens-barrel hole in front of the collimator lens to form a laser beam generating part (20).
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: January 27, 2009
    Assignee: Optoelectronics Co., Ltd.
    Inventors: Hiroshi Hayakawa, Toru Takahashi, Kentaro Takahashi
  • Publication number: 20080241702
    Abstract: In a nonaqueous electrolyte secondary battery according to an embodiment of the invention, a nonaqueous electrolyte contains: a tertiary carboxylate ester represented by the following general formula (1) in an amount of a range of 3% by mass or more and 80% by mass or less based on the total mass of the nonaqueous solvent: where R1, R2, R3, R4 represent a (C1 to 4) alkyl group, respectively, and one or more acid anhydride selected from succinic anhydride, glutaric anhydride, and glycolic anhydride in an amount of a range of 0.1% by mass or more and 5% by mass or less based on the total mass of the nonaqueous electrolyte. By containing such a constitution, in other words, by containing a nonaqueous solvent capable of stabilizing the coating film of the negative electrode, a nonaqueous electrolyte secondary battery in which not only can satisfactory cycle performance and retention characteristics be obtained, but also the overcharging performance is largely improved, can be provided.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 2, 2008
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Kentaro TAKAHASHI
  • Publication number: 20080226139
    Abstract: An eyelid detection apparatus includes a face-image storing apparatus for storing an image of a face of a subject, an eyelid-candidate extracting apparatus for processing the image stored in the face-image storing apparatus to extract a pair of lines, which becomes a candidate of a combination of a line corresponding to an upper eyelid and a line corresponding to a lower eyelid, a parameter calculating apparatus for calculating a parameter, which indicates a possibility that a pan of the image stored in The face-image storing apparatus, the part corresponding to the pair of lines extracted by the eyelid-candidate extracting apparatus, includes at least one of outer and inner corners of an eye, and an eyelid detecting apparatus for detecting a position of an eyelid of the subject on the basis of the parameter calculated by the parameter calculating apparatus.
    Type: Application
    Filed: March 13, 2008
    Publication date: September 18, 2008
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomoharu Suzuki, Takashi Hiramaki, Jun Adachi, Kenichi Ohue, Yuji Ninagawa, Kentaro Takahashi, Shigeyasu Uozumi, Satoru Nakanishi, Shinichi Kojima
  • Publication number: 20080226175
    Abstract: A face feature point detection apparatus includes an image capturing device, an edge calculating unit calculating edge values indicating a luminance change in a direction, and a detection target determining unit scanning an edge image, which is created by arranging the edge values for corresponding pixels based on pixel arrangement of the face images, with an image window being an aggregation of selected pixels formed in a predetermined shape, the detection target determining unit determining a position of the image window having a largest weighted sum of weighted sums to be a detection position where a detection target is present, providing that the weighted sum is calculated by multiplying the edge value which corresponds to each pixel in the image window by a predetermined value defined on a per-pixel basis and adding up all products of the edge value and the predetermined value.
    Type: Application
    Filed: March 12, 2008
    Publication date: September 18, 2008
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomoharu Suzuki, Jun Adachi, Yukihiko Yoshinaga, Yuji Ninagawa, Kenichi Ohue, Kentaro Takahashi, Shigeyasu Uozumi, Shinichi Kojima
  • Publication number: 20080212850
    Abstract: An eyelid detection apparatus includes a face image storing means storing a plurality of face images of a subject captured at different timings, a change detecting means detecting changes in each face image caused by blinking after processing the plurality of face images stored by the face image storing means, and an eyelid detecting means detecting a position of an eyelid of the subject based on the changes detected by the change detecting means.
    Type: Application
    Filed: February 6, 2008
    Publication date: September 4, 2008
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Jun Adachi, Yukihiko Yoshinaga, Tomoharu Suzuki, Takashi Hiramaki, Kenichi Ogawa, Kenichi Ohue, Kentaro Takahashi, Shigeyasu Uozumi, Shinichi Kojima, Satoru Nakanishi
  • Patent number: 7410729
    Abstract: A non-aqueous electrolyte cell that excels in the high-temperature cycle characteristics and that is without the possibility of solution leakage. The non-aqueous electrolyte cell includes a polymer electrolyte. This polymer electrolyte is a polymerization of a prepolymer included in a prepolymer electrolyte that includes a non-aqueous solvent, an electrolyte salt, and the prepolymer. The prepolymer includes a polyester-based monomer. The polymer electrolyte further includes a vinylene carbonate derivative and cyclic acid anhydride.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: August 12, 2008
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Kentaro Takahashi
  • Publication number: 20080121712
    Abstract: A system and method of extracting data from a barcode or similar symbol in relatively large ambient light is disclosed. The system uses a slice signal that follows the upper part of a negative offset signal, or the lower part of a positive offset signal, depending upon the value of the input signal. The system may be implemented in digital or analog hardware.
    Type: Application
    Filed: June 8, 2006
    Publication date: May 29, 2008
    Applicant: Optoelectronics Co., Ltd.
    Inventors: Kentaro Takahashi, Hiroshi Hayakawa
  • Patent number: 7354000
    Abstract: A method and system used in the barcode sensing process are disclosed, in which at least two instances of an optical signal are obtained from the same barcode in different time periods, and digitized by a first digitizer with a first threshold. The digitized results from the at least two instances are then applied with an AND algorithm to eliminate the noise, whereby create a correct digitized output. Preferably, the instances of the signal are also digitized by a second digitizer with a second threshold, which are used to synchronize the timing of the digitized results created by the first digitizer. The second threshold is preferably larger than the first threshold.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: April 8, 2008
    Assignee: Optoelectronics Co., Ltd.
    Inventors: Susumu Nakano, Kentaro Takahashi, Hiroshi Hayakawa
  • Publication number: 20080081255
    Abstract: A polymer electrolyte secondary cell that is superior in the cycle characteristic and security during cell overcharge is provided. The polymer electrolyte of the cell includes a non-aqueous solvent, a lithium salt, and a polymer. The non-aqueous solvent contains at least one of ethylene carbonate and propylene carbonate. The volume ratio (25° C., 1 atm) of the ethylene carbonate and the propylene carbonate combined to the non-aqueous solvent is equal to or more than 60%. The polymer is made of a copolymer having a monomer containing N,N-dimethyl acrylamide and a compound with three or more acrylate groups and/or methacrylate groups. The ratio of the compound to the total mass of the monomer is from 10 to 30 mass %. The ratio of the polymer to the polymer electrolyte is from 1.0 to 2.0 mass %.
    Type: Application
    Filed: September 26, 2007
    Publication date: April 3, 2008
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Mikiya YAMASAKI, Kentaro TAKAHASHI
  • Publication number: 20080081261
    Abstract: A non-aqueous electrolyte secondary cell with superior cycle characteristics is provided. The non-aqueous electrolyte secondary cell has a positive electrode, a negative electrode, and a non-aqueous electrolyte containing a non-aqueous solvent and an electrolyte salt. The non-aqueous solvent contains ethylene carbonate and propylene carbonate. The ratio of the ethylene carbonate to the total mass of the ethylene carbonate and the propylene carbonate is from 0.40 to 0.78. The non-aqueous electrolyte contains a 1,3-dioxane compound at a mass % of from 0.1 to 5.0. The 1,3-dioxane compound is represented by Formula 1: where R1 to R4 independently denote a hydrogen atom, a methyl group, or an ethyl group.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 3, 2008
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Kentaro Takahashi
  • Patent number: 7306154
    Abstract: A barcode scanning system is provided, which comprises an amplitude compensation circuit to change the amplitude of signals corresponding to each location on the barcode such that all the signals have the same amplitude. The changing of the amplitude may be determined according to an angular position or an oscillating velocity of an mirror. Preferably, the cutoff frequency of a low pass circuit in the barcode scanning system is variable according to the oscillating velocity or the angular position of the mirror too.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: December 11, 2007
    Assignee: Optoelectronics Co., Ltd.
    Inventor: Kentaro Takahashi