Patents Assigned to Hitachi Maxwell
  • Patent number: 9787119
    Abstract: Provided are: an electric storage device having improved reliability in charging a storage battery; and a charging method. This electric storage device is provided with: an SOC calculation section which calculates a charge rate when a battery voltage reached a predetermined value, in the cases where the battery voltage reached the predetermined value when a lithium ion storage battery is being charged; a voltage difference calculation section, which calculates a battery voltage difference corresponding to a difference between the charge rate and a charge rate at which lithium is deposited; a charge complete voltage calculation means, which calculates a charge complete voltage by adding the voltage difference to the battery voltage obtained when the battery voltage reached the predetermined value; and a charge control means, which completes the charging of the lithium ion storage battery in the cases where the battery voltage reached the charge complete voltage.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 10, 2017
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Shin Yamauchi, Kohei Honkura, Hirofumi Takahashi, Takashi Kamijoh, Mitsuhiro Kishimi
  • Publication number: 20170116479
    Abstract: An information display terminal includes an arithmetic unit performing a process that selects a predetermined type of communication unit among a plurality of types of communication units on the basis of, for example, information related to first objects recognized from a captured image, which is stored in advance, and acquires the related information from a predetermined device on the Internet through the communication unit and a process that, when the presence of a second object or a predetermined positional relationship between the first objects and the second object is specified in the captured image, displays the related information of the first objects in a viewing direction, using a display unit.
    Type: Application
    Filed: April 8, 2014
    Publication date: April 27, 2017
    Applicant: Hitachi Maxwell, Ltd.
    Inventors: Satoshi OUCHI, Yoshiho SEO, Yuya OGI, Tomoto KAWAMURA, Toshiteru NAKAMURA
  • Publication number: 20150296190
    Abstract: A projection-type video-image-displaying device efficiently displays an image by reducing the loss of light in the device. The device is provided with a light source radiating white light, a rod lens, a rotary color filter, a DMD, illumination optical elements, a projection lens and a control device. The rod lens collects light from the light source and emits the light. The rotary color filter selectively transmits, from the white light, light of a specific color. The DMD modulates incident light in accordance with an image signal, and the illumination optical elements form illumination light for projection onto the DMD. The projection lens projects an image formed using the DMD. The control device synchronizes the rotary color filter with the image displayed by the DMD. The DMD is disposed in a substantially conjugate relationship with the light-emitting surface on the rotary color filter.
    Type: Application
    Filed: November 18, 2013
    Publication date: October 15, 2015
    Applicant: HITACHI MAXWELL, LTD.
    Inventors: Koji Hirata, Nobuyuki Kimura, Yuriko Inadachi
  • Patent number: 9122145
    Abstract: A projector using coherent light as a light source includes: one or more coherent light sources emitting coherent light beams; a beam scanner which changes a direction of the coherent light beam; and a beam splitter which splits a beam into multiple segments and changes a phase of light of each split segment, the beam splitter being located in an optical path between the beam scanner and the coherent light source. This projector reduces speckle noises. The beam splitter includes a pair of transparent substrates; a plurality of parallel electrodes disposed on each surface of the pair of transparent substrates, the pair of the parallel electrodes being disposed in a perpendicular direction to each other. Voltages are applied to the respective electrodes at predetermined time intervals so as to produce different potentials in a liquid crystal sandwiched by the transparent substrates.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: September 1, 2015
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Tadayoshi Kosaka, Satoshi Ouchi, Mayumi Nagayoshi, Yoshiho Seo, Tomoki Kobori
  • Patent number: 8929439
    Abstract: A compressed-image noise removal device includes a decoder unit for decoding a digital-image-compressed stream, an information holding unit for holding sub information by the amount of a plurality of blocks, the sub information being decoded by a VLD unit, a noise judgment unit for making a judgment on noise removal of a display image generated by the decoder unit, and the information holding unit, a noise removal unit for executing the noise removal of a block whose noise removal has been judged to be executed by the noise judgment unit, using image data outputted from an inverse quantization unit, motion compensation data outputted from a motion compensation unit, and the sub information held in the information holding unit, and a display-image holding unit for holding, as a display image, an output image of the noise removal unit if the noise removal has been judged to be executed by the noise judgment unit, or the output of the decoder unit if the noise removal has been judged not to be executed thereby.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: January 6, 2015
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Yusuke Yatabe, Hironori Komi
  • Patent number: 8822082
    Abstract: A separator for an electrochemical device of the present invention includes a porous film including: a filler; an organic binder; and at least one resin selected from resin A that has a melting point of 80 to 140° C. and resin B that absorbs a non-aqueous electrolyte and swells upon heating and whose swelling degree increases with increasing temperature, and the filler contains boehmite having a secondary particle structure in which primary particles are connected.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: September 2, 2014
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Hideaki Katayama, Yoshinori Sato, Toshihiro Abe, Nobuaki Matsumoto
  • Patent number: 8427926
    Abstract: An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R2 opposite to a surface R1 closer to the laser light source has a continuous shape. When the surface R2 has radii h1, h2 and h3 (h1<h2<h3) from an optical axis to a lens periphery, and where sags in the radii h1, h2 and h3 are sag1, sag2 and sag3, and differentials in the sags are ?sag1, ?sag2 and ?sag3, respectively, 0>?sag1>?sag2 and ?sag2<?sag3 are satisfied.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: April 23, 2013
    Assignee: Hitachi Maxwell, Ltd.
    Inventor: Mitsuru Ito
  • Patent number: 8404163
    Abstract: The present invention provides a method for producing a molded article which enables dissolution of a desired amount of a subject material in a molten resin without any limitation by the solubility of a high-pressure carbon dioxide in the molten resin and which is therefore suitable for commercial production of molded articles. The present invention pertains to a method for producing a molded article by molding a molten resin, and this method is characterized by including steps of supplying a high-pressure carbon dioxide and a subject material dissolved therein, into the molten resin; kneading the molten resin into which the high-pressure carbon dioxide and the subject material have been supplied; and exhausting the high-pressure carbon dioxide from the kneaded molten resin.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: March 26, 2013
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Atsushi Yusa, Tetsuya Ano, Satoshi Yamamoto, Toshiyuki Ogano
  • Patent number: 8027519
    Abstract: An imaging module for biometrics authentication comprises: a light source irradiating a living body with light capable of passing through the living body; a prism having an incidence surface including an incidence area for taking in light emerging from the living body, two or more reflecting surfaces for reflecting the light taken in through the incidence area, and an outlet surface for outputting the light reflected by the reflecting surfaces; and a camera module including a lens for focusing the light emerging from the outlet surface of the prism and an image pickup device for converting the light focused thereon by the lens into an electric signal and outputting the electric signal.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: September 27, 2011
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Tsuyoshi Maro, Akito Sakemoto, Akihiko Soya, Takashi Sugiyama, Masaki Yamazaki
  • Patent number: 7965469
    Abstract: There are provided a tape cartridge which can reliably remove contamination adhering to the surface of a head and a tape loading system using the same. A tape such as recording tapes and leader tapes is unreeled from a case body housing the tape and is taken up to the take up reel of a tape drive through a loading path of the tape drive. A brush which can bend elastically is placed on a leading end side of the tape in a protruding manner. The brush moves in the state of being in contact with a head placed along the loading path of the tape drive upon unreeling of the tape, so that the head of the tape drive is cleaned by the brush.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: June 21, 2011
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Yasuo Inugai, Hideyuki Tanaka, Masashi Adachi
  • Patent number: 7884898
    Abstract: An optical sheet for a backlight is provided on a surface light source in the backlight. An optical reflection layer has a plurality of through grooves formed on a transparent substrate and arranged at a prescribed interval. The width of the through hole is narrowed from the upper surface opening to the lower surface opening. Each of the cylindrical lenses is filled within a corresponding through groove, and its surface is a cylindrical surface that covers the upper surface opening of the through groove. Light from the light source comes in only from the lower surface opening, so that the angle of incidence of light when the light reaches the cylindrical surface can be controlled, and an increased amount of light deflected toward the front surface can be emitted. Therefore, the optical sheet for a backlight can collect light from the surface light source in the front surface direction.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: February 8, 2011
    Assignee: Hitachi Maxwell, Ltd.
    Inventor: Yukinori Yamada
  • Patent number: 7829061
    Abstract: The zirconium oxide hydrate particles of the present invention are represented by the formula ZrO2.nH2O and have a mean primary particle size of 0.5 nm or more and 5 nm or less, and “n” in the formula represents a number greater than 2.5. Moreover, the method for producing of zirconium oxide hydrate particles of the present invention includes the step of preparing zirconium oxide hydrate particles by adding an aqueous zirconium salt solution to an aqueous alkaline solution while controlling the pH to 7.0 or more and 13.0 or less, and the step of subjecting the zirconium oxide hydrate particles to a hydrothermal treatment in the presence of water at a temperature of 50° C. or more and less than 110° C. for 3 hours or more.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: November 9, 2010
    Assignees: Hitachi Maxwell, Ltd., Hitachi, Ltd.
    Inventors: Yuko Sawaki, Kazutaka Matsuo, Mikio Kishimoto, Takayuki Hirashige, Makoto Morishima
  • Patent number: 7787349
    Abstract: An optical pickup lens focuses laser beams having different wavelengths ?1, ?2 and ?3 on at least three kinds of optical discs. At least one side of the optical pickup lens has a concentric loop zonal structure for compensating wavefront aberration occurring when recording or reproducing an optical disc having a substrate thickness t1 by the laser beam having the wavelength ?1 and wavefront aberration occurring when recording or reproducing an optical disc having a substrate thickness t2 by the laser beam having the wavelength ?2. When recording or reproducing an optical disc having a substrate thickness t3 by the laser beam having the wavelength ?3, a phase difference given to the laser beam having the wavelength ?3 due to the concentric loop zonal structure is about 0.15? or smaller.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: August 31, 2010
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Koichiro Wakabayashi, Mitsuhiro Miyauchi, Yasuyuki Sugi, Yutaka Makino
  • Patent number: 7748638
    Abstract: An accessed object having a non-contact IC module including a semiconductor device and a module-side antenna formed extending over two sides of an accessed object, wherein the module-side antenna consists of a first module-side antenna and a second module-side antenna continuous to the first module-side antenna, wherein the first module-side antenna secures a necessary antenna effective area by coming into face-to-face relation with a first apparatus-side antenna on communication apparatus to communicate with the accessed object, and wherein the second module-side antenna is disposed close to the second apparatus-side antenna in an access direction different from the direction in which the first apparatus-side antenna makes access to the accessed object.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: July 6, 2010
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Yoshiharu Hino, Kazuhiko Daido
  • Patent number: 7495415
    Abstract: A DC backup power supply system having a battery a charge-discharge circuit for charging and discharging a power between the battery and a DC line and a control circuit for controlling the charge-discharge circuit, wherein the battery has a number of battery cells and cylindrical portions of the battery cells are laid on an approximately horizontal plane.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: February 24, 2009
    Assignees: Hitachi, Ltd., Hitachi Maxwell Ltd., Hitachi Computer Peripherals Co.
    Inventors: Akihiko Kanouda, Minehiro Nemoto, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe, Takao Gotou, Masato Isogai, Toshikatsu Miyata
  • Patent number: 7477587
    Abstract: An information-recording method includes the steps of moving a light beam at a selected linear velocity relative to the information-recording medium; controlling the light beam to generate a multi-pulse having at least three power levels of a first power level Ph, a second power level Pl which is lower than the first power level, and a third power level Pm which is intermediate therebetween, the multi-pulse being repeatedly modulated between the first power level Ph and the third power level Pm; adjusting the third power level Pm in response to the selected linear velocity; and recording the information by irradiating the information-recording medium with the controlled light beam. Recording compatibility can be secured for information-recording apparatuses different in recording linear velocity and laser source characteristic.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: January 13, 2009
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Naoki Kitagaki, Makoto Miyamoto
  • Patent number: 7457052
    Abstract: A light shield sheet has an aperture that restricts a range of light transmission. In the light shield sheet, the thickness of the inner circumference in the periphery of the aperture is smaller than the thickness of the outer circumference.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: November 25, 2008
    Assignee: Hitachi Maxwell, Ltd.
    Inventor: Hiroyuki Hirata
  • Patent number: 7396150
    Abstract: The lighting apparatus includes a light source, a housing that contains the light source inside and has an exit port for outputting light from the light source, and an optical sheet that is placed in the exit port. The optical sheet includes a lens structure that is placed at a light exit side and aligns an output direction of incident light from the light source, a reflector that is placed at a light incident side and reflects light emitted by the light source, and a light transmitting opening that exists in the reflector and transmits incident light from the light source. The light transmitting opening is placed in a position deviated from an optical axis of the lens structure. The display apparatus includes the lighting apparatus.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: July 8, 2008
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Yoichi Ogawa, Masataka Sato, Katsusuke Shimazaki, Toshinari Shibasaki
  • Patent number: 7393884
    Abstract: A pigmented ink composition comprising a pigment, a resin having an acidic group and an organic solvent having a boiling point of at least 150° C. which is present in an amount of from 50 to 90% by weight based on the whole weight of the ink composition. When this ink composition is subjected to an printed layer-sliding test in which the ink composition is applied on a cationically treated printing medium with a #4 bar coater (available from TOYO SEIKI KOGYO CO., LTD.) and dried and then the printed surface is slid with a cloth on which a weight of 50 g is placed, the printed record is not grazed. This ink composition contains the pigment with a small dispersion particle size and has good water resistance, can be printed on a plain paper sheet without cockling, and suffers from no grazing of printed records when the ink composition is printed on a cationically treated paper sheet.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: July 1, 2008
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Takahiro Furutani, Nagayuki Takao
  • Patent number: D718802
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: December 2, 2014
    Assignee: Hitachi Maxwell, Ltd.
    Inventors: Atsushi Ishibashi, Yuta Kawaguchi, Takashi Yamamoto, Koshu Ichikawa