Patents Assigned to Hitachi
  • Patent number: 7667350
    Abstract: A method of controlling an electric power source apparatus, which comprises supplying electric power to an electronic device on which a secondary battery is mounted from a power source apparatus having a fuel cell and an auxiliary power source. Electric power is supplied intermittently to a charging terminal of the electronic device by means of a switch for controlling conduction and interruption of an output terminal of the power source apparatus.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: February 23, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Yasuaki Norimatsu, Akihiko Kanouda, Mutsumi Kikuchi
  • Patent number: 7665541
    Abstract: A cover which covers outer peripheries of fastening screws are disposed on an outer periphery of a hammer case. A stopper which detachably positions and fixes the cover to the outer periphery of the hammer case is disposed.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: February 23, 2010
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Masato Sakai, Satoru Matsuno, Masanori Watanabe, Chikai Yoshimizu
  • Patent number: 7668506
    Abstract: In a receiving apparatus equipped with a plurality of tuners, if a reception antenna is controlled in such a manner that a reception condition of a channel tuned by one tuner may become suitable, then a reception condition of the channel tuned by another tuner does not always become suitable. The receiving apparatus is provided with an antenna control unit which controls a reception antenna whose reception condition can be set, a first receiving unit, a second receiving unit, and a storage unit which stores thereinto tuning information such as a tuning channel, signal quality information, and a reception antenna setting condition. The receiving apparatus calculates a setting condition of the reception antenna capable of obtaining suitable receiving conditions in both the first and second receiving units by employing tuning information in a first channel and tuning information in a second channel.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: February 23, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Isao Hoda, Hitoshi Akiyama
  • Patent number: 7667914
    Abstract: Embodiments of the present invention provide a mixed-mode amplifier for amplifying signals in data storage devices such as disk drives. In one embodiments, a circuit for amplifying data signals comprises a magnetoresistive sensor having a bias voltage applied thereto; a signal amplifier which amplifies a signal detected by the magnetoresistive sensor having the bias voltage applied thereto; a feedback control block which is coupled to an output of the signal amplifier and outputs a feedback current used to vary a loop gain of the circuit; a bias setting circuit which outputs a bias setting current; and a transimpedance amplifier which receives the bias setting current from the bias setting block and the feedback current from the feedback control block and generates the bias voltage applied to the magnetoresistive sensor.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: February 23, 2010
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: John Contreras, Klaas Klaassen
  • Publication number: 20100041547
    Abstract: A method for producing a catalyst of the present invention is characterized by sequentially performing the steps of: (i) dipping an end face portion of a carrier structure having a catalytic component carried thereon in an aqueous metal salt solution at a concentration of 2.7 to 3.88 mol/L in terms of mole of the metal; (ii) drying the dipped end face portion; (iii) dipping the dried end face portion again in an aqueous metal salt solution whose metal species is the same as that in the aqueous metal salt solution at a concentration of 2.7 to 3.88 mol/L in terms of mole of the metal; and (iv) performing a calcination treatment to harden the catalytic end face.
    Type: Application
    Filed: September 18, 2007
    Publication date: February 18, 2010
    Applicant: Hitachi Zosen Corporation
    Inventors: Susumu Hikazudani, Kazuhiro Yano, Takehiro Shimizu, Hidetake Okamoto, Masaki Akiyama
  • Publication number: 20100040503
    Abstract: A soft magnetic alloy that in an FeCo nanocrystal soft magnetic material, exhibits a high saturation magnetic flux density of 1.85 T or more, and that ensures prolonged nozzle life and easy ribbon production; an amorphous alloy ribbon for use in production thereof; and magnetic parts utilizing the soft magnetic alloy. The soft magnetic alloy has the composition of the formula Fe100-x-y-aCoaCuxBy (in the formula, x, y and a each represent atomic % and satisfy the relationships 1<x?3, 10?y?20 and 10<a<25). At least part of the structure thereof consists of a crystal phase of 60 nm or less (not including 0) crystal grain diameter. The soft magnetic alloy has a saturation magnetic flux density of 1.85 T or more and a coercive force of 200 A/m or less.
    Type: Application
    Filed: March 5, 2008
    Publication date: February 18, 2010
    Applicant: HITACHI METALS, LTD.
    Inventors: Yoshihito Yoshizawa, Motoki Ohta
  • Publication number: 20100038103
    Abstract: An electrical power tool includes a housing, an electrical motor, an end-bit holding section, a transmitting mechanism, a cap, and a lighting section. The housing has one end. The electrical motor is accommodated in the housing and is configured to generate a rotational driving force. The end-bit holding section is provided at the one end and is rotatable about a rotational axis. The transmitting mechanism transmits the rotational driving force to the end-bit holding section. The cap is attached to the one end. The lighting section allows an entirety of the cap to be luminous.
    Type: Application
    Filed: April 23, 2008
    Publication date: February 18, 2010
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Takashi Ueda, Takao Aradachi, Jinichi Toukairin
  • Publication number: 20100042845
    Abstract: An IC tag system is provided which can perform transfer of a method of accessing an IC tag and assure data validity of the IC tag only between authorized users. The IC tag system comprises a data write-in device including a password encryption unit (130), a signature generation unit (140) and a data write-in unit (150) operative to communicate with the IC tag (30) to write in data and an encrypted password in the IC tag (30) and set the limitation on access to the data written in the IC tag (30) by the aid of the password, and a data read-in device including a password decryption unit (230), a signature authentication unit (240) and a data read-in unit (250) operative to communicate with the IC tag (30) to read in the data and the encrypted password from the IC tag (30) and release the limitation on access to the data by the aid of the decrypted password.
    Type: Application
    Filed: February 15, 2008
    Publication date: February 18, 2010
    Applicant: HITACHI, LTD.
    Inventors: Yuichi Kobayashi, Atsushi Honzawa, Toshiyuki Kuwana, Shinichirou Fukushima
  • Publication number: 20100038109
    Abstract: When electric wires (joint conductors) are disposed adjacent each other in a peeled state of coatings, a gap corresponding to the total thickness of both conductors' insulating films as skin layers is formed between end joined face portions of the conductors. The gap becomes larger because the conductors are tapered. Therefore, the adhesion between both conductors is impaired, with a consequent fear of occurrence of joining imperfection. In opposed joined face portions of electric wires (joint conductors), the conductors are deformed from the tips of their axes to the joined face side in such a manner that exposed portions at the tips of the conductors and insulating film faces located in the vicinity thereof are flush with each other or the exposed portions are projected.
    Type: Application
    Filed: October 19, 2009
    Publication date: February 18, 2010
    Applicant: Hitachi, Ltd.
    Inventors: Takeshi SAKAI, Yoshimi Mori, Yasuhiko Kimura, Masahiko Honma, Fuminori Ishikawa
  • Publication number: 20100040964
    Abstract: A range of a coordinate of drawing data supplied to a digital micromirror device (DMD) driving circuit 27 of a light beam irradiation device 20 is determined to configure a bandwidth of a light beam irradiated from an irradiation optical system of the light beam irradiation device 20. The drawing data having the determined range of the coordinate is supplied to the DMD driving circuit 27 of the light beam irradiation device 20. Movement of a stage 7 is controlled to move a chuck 10 for only a distance less than the bandwidth of the light beam irradiated from the irradiation optical system of the light beam irradiation device 20 towards a direction perpendicular to a scanning direction of the substrate by the light beam of the light beam irradiation device 20, at each scanning, and a same region of the substrate is scanned multiple times.
    Type: Application
    Filed: August 13, 2009
    Publication date: February 18, 2010
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: RYOUJI NEMOTO, Tomoaki Hayashi, Satoshi Uehara, Mitsuyoshi Koizumi
  • Publication number: 20100039977
    Abstract: Radio resources are utilized efficiently and the communication quality is improved by flexibly adapting to the state of radio waves at a base station varying every moment or the topology of the distribution area of contents in multicast communication. The base station (100) stores information including the flow distribution starting time, the error rate measuring period, the threshold in an intra-base station flow management table. When detecting that it becomes the time before the error rate measuring period from the flow distribution starting time, the reception quality of radio terminals in the communication area of the base station (100) is measured. A base station (100-b) where the reception quality exceeds the threshold redundantly transmits multicast data assigned to a plurality of radio resources (800-b1, 800-b3, 800-b5). A base station (100-a) where the reception quality does not exceed the threshold transmits multicast data assigned to a single radio resource (800-a1).
    Type: Application
    Filed: January 25, 2007
    Publication date: February 18, 2010
    Applicant: HITACHI COMMUNICATION TECHNOLOGIES, LTD.
    Inventors: Masafumi Hikari, Yoshimi Saito, Shinji Matsumoto, Jun Asaki
  • Publication number: 20100040289
    Abstract: A road sign recognition apparatus generates a mosaic image formed by connecting accumulated images from a camera in time-series order, determines multiple road signs contained in the mosaic image by template matching, and generates positional information for the use of knowing a relative position of a vehicle to the road sign.
    Type: Application
    Filed: February 12, 2009
    Publication date: February 18, 2010
    Applicant: Hitachi, Ltd.
    Inventors: Kota IRIE, Masahiro KIYOHARA, Naoki KOUROGI
  • Publication number: 20100043010
    Abstract: Provided is a data processing system which includes: a first computer for receiving a processing request for a task processing, executing the processing, and holding data used therein; and a second computer for holding a duplicate of the data held in the first computer, halting the first computer if the first computer is determined to be halted, and receiving and processing the processing request. The first computer receives at least an update request as the processing request including request identification information to which unique numbers assigned to the individual processing requests in an ascending order are allocated, updates the held data, and transmits the update request including the request identification information to the second computer. The second computer stores a transmitted reference request and the update request as the processing requests, and processes the processing requests in an ascending order of the unique numbers included in the individual processing requests.
    Type: Application
    Filed: February 6, 2009
    Publication date: February 18, 2010
    Applicant: Hitachi, Ltd.
    Inventors: Takahiro Yokoyama, Tsunehiko Baba, Masanori Kawashima, Kazuho Tanaka
  • Publication number: 20100037875
    Abstract: The invention provides a two cycle engine which can improve an output by effective scavenging. In a two cycle engine having an exhaust port provided in a side portion of a cylinder, and a scavenge air port provided in the side portion of the cylinder so as to be symmetrical with a plane passing through a center in a cylinder circumference direction of the exhaust port an axis extending to inside of the cylinder, the scavenge air port is structured such that an axis extending to inside of the cylinder from an opening of the scavenge air port in such a direction as to be away from the exhaust port of the cylinder, and is divided in an cylinder axis direction by a dividing portion.
    Type: Application
    Filed: August 12, 2009
    Publication date: February 18, 2010
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Toshinori YASUTOMI, Shinki OHTSU, Junichi KAMIMURA
  • Publication number: 20100037877
    Abstract: The invention provides a two cycle engine which effectively suppresses an intrusion of a combustion gas into a crank chamber. Further, the invention provides a two cycle engine tool provided with the two cycle engine mentioned above. An engine is provided with a cylinder having two scavenge air ports at different positions in a cylinder circumference direction, and scavenge air inflow ports communicating individually with these two scavenge air ports via a scavenge air passage, and a piston in which two scavenge air communication ports are formed at positions corresponding to the scavenge air inflow ports, and is structured to swirl the gas flowing into the piston from the cylinder through the scavenge air passage, in an upper portion of the internal space of the piston, and retains the gas in the upper portion of the internal space of the piston.
    Type: Application
    Filed: August 12, 2009
    Publication date: February 18, 2010
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Toshinori YASUTOMI, Shinki Ohtsu, Junichi Kamimura, Shigetoshi Ishida
  • Publication number: 20100039663
    Abstract: Insertion of a watermark corresponding to the content of a file at the time of the printing of the file is made possible. Importance and/or confidentiality is defined per keyword in advance, and the watermark to be inserted is defined based thereon. At the time of the printing of the file, a keyword search within the file is performed, and the watermark to be inserted is automatically selected based on the search result (see FIG. 5).
    Type: Application
    Filed: December 5, 2008
    Publication date: February 18, 2010
    Applicant: HITACHI SOFTWARE ENGINEERING CO., LTD.
    Inventor: Atsuo Ohsone
  • Publication number: 20100042675
    Abstract: Provided is a request processing method of processing a request requesting task processing in a computer system including the steps of: transmitting, by a proxy server, a first requests which is one of duplicate and original requests to application servers; transmitting, by the application servers, a result of processing of the first requests to the proxy server; notifying, by the application servers, a session management server of session information including identifiers of the application servers and identifiers of the first requests; determining, by the proxy server, a result of the processing used for responding to a client computer upon receiving the result of the processing of the first requests; and notifying, by the proxy server, the session management server of the identifiers of the application servers which have transmitted the determined processing result and an identifier of the request transmitted from the client computer.
    Type: Application
    Filed: February 6, 2009
    Publication date: February 18, 2010
    Applicant: Hitachi, Ltd.
    Inventor: Hiroshi FUJII
  • Publication number: 20100038311
    Abstract: The entrapping immobilization pellets satisfy conditions: (A) the deformation rate expressed by (H0?H1)/H0×100 is 70% or more, where the thickness of the pellets before compression is H0 and the thickness of the pellets at the time the pellets are broken by compression is H1; and (B) the particle diameter falls within the range of 0.1 to 1.5 mm. The entrapping immobilization pellets are added to a biological treatment tank having no screen and the entrapping immobilization pellets discharged together with treated water to a solid-liquid separation tank are returned to the biological treatment tank by pumping. With this constitution, the entrapping immobilization pellets are less broken even if they are returned to the biological treatment tank by pumping, a conventional biological treatment tank in which wastewater is treated with activated sludge can be used without modification, and in addition, the particle diameter thereof can be reduced. Therefore, treatment efficiency can be markedly improved.
    Type: Application
    Filed: July 6, 2006
    Publication date: February 18, 2010
    Applicant: HITACHI PLANT TECHNOLOGIES, LTD.
    Inventors: Naoki Abe, Tatsuo Sumino, Naoki Ookuma, Yasunori Nakayama, Tadashi Aoki
  • Publication number: 20100040889
    Abstract: The method of manufacturing shoes of the present invention comprises a pre-step of heating a following reactive hot-melt adhesive to melt it and providing the melted adhesive on a joining surface of at least one adherend, an ultraviolet treating step of irradiating the adhesive with ultraviolet light having irradiation energy more than 100 mJ/cm2 and less than 1200 mJ/cm2 to polymerize a polyurethane prepolymer, and a joining step of overlaying a joining surface of another adherend on the adhesive to bond both adherends together. The reactive hot-melt adhesive contains a polyurethane prepolymer having an (meth)acryloyl group and an isocyanate group at the end of a molecule, and a photopolymerization initiator. The polyurethane prepolymer includes a non-crystalline polyol and a crystalline polyol, wherein the non-crystalline polyol is contained from 20% by mass to 90% by mass with respect to the whole polyols. The viscosity of the reactive hot-melt adhesive at 80° C. is 300 Pa·s or less.
    Type: Application
    Filed: January 29, 2008
    Publication date: February 18, 2010
    Applicants: ASICS CORPORATION, HITACHI KASEI POLYMER CO., LTD.
    Inventors: Kenichi Harano, Tatsuya Amano, Hisao Matsumiya
  • Publication number: 20100038162
    Abstract: A ureal water tank (28), a storage of an aqueous urea solution, is located within a utility room (6G) in a right front section of a revolving frame (6), which is readily accessible from outside. In this instance, among a plurality of operating oil conduits (18), a working mechanism operating conduit (21) which supplies operating oil to a boom cylinder (5D) of a working mechanism (5) is arranged to run along exterior surfaces of the ureal water tank (28). Therefore, even if the ureal water tank (28) is located in a place with no heat source, the aqueous urea solution in the ureal water tank (28) can be stably kept in a heated state by utilization of heat of operating oil in circulation through the working mechanism operating conduit (21).
    Type: Application
    Filed: March 6, 2008
    Publication date: February 18, 2010
    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Shohei Kamiya, Yasushi Arai, Kazunori Nakamura