Patents Assigned to Hitachi., Ltd. and
  • Patent number: 6570171
    Abstract: An ion implanter comprises an ion source and a wafer support device having a rotary disk that supports a plurality of wafers thereon and is rotated about its center axis, and capable of being swung alternately in opposite directions. An ion beam emitted by the ion source is projected on the wafers for ion implantation. The wafer support device is supported so that the center of gravity of the wafer support device lies below an axis about which the wafer support device is swung alternately in opposite directions and a component of the gravitational acceleration imparted to the wafer support device acts in the same direction as a force applied to the wafer support device to reverse the same.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Hiroyuki Tomita, Kazuo Mera
  • Patent number: 6571314
    Abstract: In a disk array subsystem capable of changing the data redundancy method between a duplicating method and a parity method, the load of data transfer occurring at the time of changing the data redundant method is reduced. In the disk array subsystem, since one data of the duplicated data are used for data for the parity data area, the one data secures an area for storing parity prepared from the data. With the arrangement, it is not necessary to transfer the data when the data redundancy method is changed from the duplicating to the parity method and the data transfer load is mitigated.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Tsunetaka Komachiya, Yoshihisa Kamo, Akira Yamamoto
  • Patent number: 6571350
    Abstract: Duplicate data are stored in separate storage units SU(0) 16 and SU(1) 26, respectively. The storage area in each of SU(0) 16 and SU(1) 26 is divided into master storage regions and sub storage regions each of which is allocated alternately to the storage units in increments of fixed addresses. The store request is issued to both of the storage units allocated the master storage region and the sub storage region, and the fetch request is issued to one of the storage units allocated the master storage region from the RSC(0) 34 and RSC(1) 44.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Kurokawa, Shinichi Mihashi, Hiroshi Yamada, Toshiaki Kawamura
  • Patent number: 6570570
    Abstract: A parallel processing processor for processing images including &agr; data indicative of pixel transparency. The parallel processing processor comprises: a plurality of execution units for executing in parallel arithmetic and logical operations under control of a single instruction; general purpose registers which are connected to the execution units via a data path, which input data to the execution units and which receive results of operations from the execution units; &agr; data dedicated registers which are connected to the execution units via another data path and which input data to the execution units; and a control circuit for directing data from the general purpose registers and &agr; data dedicated registers into each of the execution units under control of a single instruction.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Yoshinori Suzuki, Junichi Kimura
  • Patent number: 6568872
    Abstract: An abutted portion of face plates (12b and 22b) of hollow frame members (10 and 20) is carried out according to a friction stir joining. Next, a connection member (30) is mounted, one end of the connection member (30) is abutted to an end portion of the face plate (11) of the hollow frame member (10). Under this condition, the abutted portion between the face plate (11) and the connection member (30) is carried out according to the friction stir joining. An overlapping portion between another end of the connection member (30) and the hollow frame member (20) is carried out according to the friction stir joining. According to demands, the connection member (30) and the face plate (21) of the hollow member (20) are welded. Without of regard of a dimension accuracy of the hollow frame member and the like, a good joining from one side face of the hollow frame member can be carried out.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Kawasaki, Toshiaki Sagawa, Hideyuki Nakamura
  • Patent number: 6569742
    Abstract: A MISFET capable of a high speed operation includes a metal silicide layer in a high concentration region aligned with a gate side wall layer on a self-alignment basis. A MISFET which can be driven at a high voltage includes an LDD portion having a width greater than the width of the side wall layer, a high concentration region in contact with the LDD portion and a metal silicide layer in the high concentration region.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Yasuhiro Taniguchi, Shoji Shukuri, Kenichi Kuroda, Shuji Ikeda, Takashi Hashimoto
  • Patent number: 6568191
    Abstract: An object is to improve the operational reliability of a gas turbine by suppressing thermal stress and thermal deformation acting on the rotor of the gas turbine. The gas turbine has a rotor shaft constructed by arranging, in an axial direction in turn, a plurality of discs each having a plurality of combustion gas-driven moving blades annularly arranged on the peripheral portion and spacers arranged between the discs, and is characterized in that gap portions are formed between a region, on the rotor shaft center portion side, of the above-mentioned discs facing the spacers and spacers adjacent thereto, contact surfaces are formed both of which contact on both a region, on the rotor peripheral side, of the above-mentioned discs facing the spacers and adjacent spacers thereto, and a third flow path leading fluid to the above-mentioned gap portions is provided.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Shinya Marushima, Manabu Matsumoto, Kazuhiko Kawaike, Takashi Ikeguchi, Takashi Machida, Masaru Sekihara
  • Patent number: 6570876
    Abstract: A packet switch for switching variable length packets, wherein each of output port interfaces includes a buffer memory for storing transmission packets, a transmission priority controller for classifying, based on a predetermined algorithm, transmission packets passed from a packet switching unit into a plurality of queue groups to which individual bandwidths are assigned respectively, and queuing said transmission packets in said buffer memory so as to form a plurality of queues according to transmission priority in each of said queue groups, and a packet read-out controller for reading out said transmission packets from each of said queue groups in the buffer memory according to the order of transmission priority of the packets while guaranteeing the bandwidth assigned to the queue group.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventor: Takeshi Aimoto
  • Patent number: 6570865
    Abstract: A radio communication system having a base station and a plurality of radio terminals, wherein each radio terminal having a transmission request transmits a reservation packet at arbitrary timing through a reservation channel in accordance with a CDMA scheme, and the base station assigns a traffic channel and a time slot to be used to each radio terminal requesting a reservation through a reply packet outputted onto a reply channel. On the reservation channel, a short spreading code corresponding to a matched filter is applied.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Hironari Masui, Yasuo Ohgoshi, Takashi Yano, Nobukazu Doi
  • Patent number: 6570184
    Abstract: Inexpensive, unannealed glass is used as a substrate. The surface of a polycrystalline silicon film doped with boron (B) or phosphorus (P) is oxidized with ozone at a processing temperature of 500° C. or below to form a silicon oxide film of 4 to 20 nm thick on the surface of polycrystalline silicon. On account of this treatment, the level density at the interface between the gate-insulating layer and the channel layer can be made lower, and a thin-film transistor having less variations of characteristics can be formed on the unannealed glass substrate.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Kazuhiko Horikoshi, Klyoshi Ogata, Takuo Tamura, Miwako Nakahara, Makoto Ohkura, Ryoji Oritsuki, Yasushi Nakano, Takeo Shiba
  • Patent number: 6570265
    Abstract: A hybrid vehicle driving system has a transmission means (22) for selectively transmitting the output torque of an internal-combustion engine (10), the output torque of an electric motor (19) or a composite torque produced by combining the respective output torques of the internal-combustion engine (10) and the electric motor (19) to driving wheels. The hybrid vehicle driving system includes a turbogenerator (7) capable of converting energy of the exhaust gas discharged from the internal-combustion engine (10) into electric energy, and an electrical connecting means (1) for electrically connecting the turbogenerator (7) to the electric motor (19). The hybrid vehicle driving system is controlled so that the engine (10) operates on a lean mixture for the largest possible part of the total operating time of the engine (10).
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Takuya Shiraishi, Toshiharu Nogi, Minoru Oosuga, Yoshihiro Sukegawa
  • Patent number: 6570580
    Abstract: An apparatus for information display for displaying not only periodic information in accordance with schedule, but also non-periodic information regardless of the schedule, to passengers and passersby in stations, airports, harbors, bus terminals and streets, and the like. The apparatus comprises an information-storing section for storing a plurality of non-periodic information to be displayed regardless of the schedule, an input circuit for receiving a plurality of input signals transmitted from an external device or a remote place and display control section for simultaneously displaying the non-periodic information and periodic information which correspond to the kind of an input signal, when the apparatus receives this input signal from the external apparatus or the remote place. The apparatus may be a multi-screen display type having a plurality of screens.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Hitoshi Suzuki, Naohisa Koizumi, Goro Ohnishi, Tomohisa Kohiyama, Kazushi Kobayashi, Takeshi Igarashi, Hironori Oikawa, Hiroyuki Mano
  • Patent number: 6570830
    Abstract: An optical disk signal processing apparatus retains compatibility with the conventional continuous servo recording technique, and reduces the amount of noise included in a signal played back from the optical disk without the need to decrease the size of the area for recording data, resulting in a drastically increased signal-to-noise ratio. The optical disk signal processing apparatus has a light source, an optical system for leading a light beam generated by the light source, an optical device for converging the light beam output by the optical system and applying the converged beam to the rotating optical disk, a signal detecting optical system for detecting a signal reflected by the rotating disk through the optical device, and a light detecting instrument for converting light produced by the signal detecting optical system into an electrical signal and a data detecting circuit.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Maeda, Hisataka Sugiyama
  • Patent number: 6568168
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh
  • Patent number: 6571303
    Abstract: A communication control system and method of implementing a high-speed data transmitting and receiving process uses a communication protocol program, a protocol buffer which is managed by the communication protocol program, a communication controller for controlling a transmission line and a network buffer managed by the communication controller.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Toshikazu Yasue, Hidemitsu Higuchi, Yukio Shimamoto, Toru Horimoto
  • Patent number: 6570240
    Abstract: In order to form a semiconductor device including a lateral bipolar transistor which is a match in the device performance for a vertical bipolar transistor, an electrically conductive film which is formed by filling a trench reaching a buried oxide film in an SOI substrate with an electrically conductive film is utilized for an emitter and/or a collector, whereby a bipolar transistor is formed through a simple process.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Takasumi Ohyanagi, Atsuo Watanabe
  • Patent number: 6568167
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh
  • Patent number: 6568908
    Abstract: The moving blades of a rotor included in a steam turbine are formed so that the width of a gap between opposite end surfaces of first connecting members of adjacent blades along the direction of rotation of the rotor and the width of a gap between opposite end surfaces of second connecting members of the adjacent blades along the direction of rotation of the rotor are determined so as to make the second connecting members start coming into contact with each other at a rotating speed of the rotor higher than a rotating speed at which the first connecting members of the adjacent blades start to come into contact with each other.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Kiyoshi Namura, Eiji Saito, Yoshiaki Yamazaki, Masakazu Takasumi, Takeshi Onoda, Shigemichi Inoue
  • Patent number: 6570800
    Abstract: The column address strobe signal (CAS) which is changed in cycles as many as a plurality of times that of a clock signal cycle is input to the memory block (MBK0 to MBKn). A plurality of serial data readout from the memory cell array (10) and parallel/serial converted by a parallel/serial converter circuit (21) in synchronism with a clock signal cycle are output for every cycle when the column address signal (CASADR) is changed. Parallel data input to the memory block and serial/parallel converted by a serial/parallel converter circuit (25) in synchronism with the clock signal cycle are written in the memory cell array. In this way, the access specification that the column address strobe signal is varied once per n cycles of the clock signal allows for a more rapid memory operation.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: May 27, 2003
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Yousuke Tanaka, Masahiro Katayama, Yuji Yokoyama, Hiroshi Akasaki, Shuichi Miyaoka, Toru Kobayashi
  • Patent number: 6571193
    Abstract: An object of the present invention is to provide a method, an apparatus and a system for automatically recognizing motions and actions of moving objects such as humans, animals and machines. Measuring instruments are attached to an object under observation to measure a status change entailing the object's motion or action and to issue a signal denoting the measurements. A characteristic quantity extraction unit extracts a characteristic quantity from the measurement signal received which represents the motion or action currently performed by the object under observation. A signal processing unit for motion/action recognition correlates the extracted characteristic quantity with reference data in a database containing previously acquired characteristic quantities of motions and actions. The motion or action represented by the characteristic quantity with the highest degree of correlation is recognized and output.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Munetoshi Unuma, Shiro Nonaka, Shigeru Oho