Patents Assigned to Hitachi., Ltd. and
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Patent number: 7340529Abstract: A bandwidth monitoring device for use in a network for transferring priority packets in preference to non priority packets as far as the amount of the priority packets is within a contract bandwidth established between a network user and a network operator, comprising a bandwidth check result decision unit for detecting whether the bandwidth of the priority packets is less than the contract bandwidth, and a DSCP decision unit for determining that a non priority packet may be transferred as a priority packet when the bandwidth of the priority packets is less than the contract bandwidth thereby to sufficiently use the contract bandwidth.Type: GrantFiled: June 2, 2000Date of Patent: March 4, 2008Assignee: Hitachi, Ltd.Inventors: Takeki Yazaki, Takeshi Aimoto
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Patent number: 7339316Abstract: Light-emitting devices and light-emitting displays for realizing bright display by allowing light emitted from an emissive layer to efficiently contribute to a display. Polarization separators are arranged between the emissive layer and a phase plate. In the light of a wavelength range which includes a part or all of a light-emission wavelength range of the emissive layer and is narrower than a visible wavelength range and is directed from the emissive layer side to the polarization separators side, the polarization separators reflect circularly polarized light components which are converted into linearly polarized light that is absorbed by the polarizer due to the operation of the phase plate and transmit the other light.Type: GrantFiled: December 20, 2005Date of Patent: March 4, 2008Assignee: Hitachi, LtdInventors: Masaya Adachi, Yoshiyuki Kaneko, Sukekazu Aratani, Shingo Ishihara
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Patent number: 7337661Abstract: A low-cost thermal flow meter that has good temperature characteristics and little variations. The thermal flow meter includes a sensor element including a heat-generating resistor and at least two temperature-measuring resistors disposed downstream and upstream. The sensor element is positioned in the flow of a measured medium. It also includes an adjusting means for adjusting a excess temperature (?Th=Th?Ta) of the heat-generating resistor, which is the difference between the temperature (Ta) of the measured medium and the temperature (Th) of the heat-generating resistor. The adjusting means adjusts the excess temperature (?Th) of the heat-generating resistor depending on the temperature of the measured medium such that the excess temperature becomes smaller as the temperature of the measured medium increases.Type: GrantFiled: February 13, 2006Date of Patent: March 4, 2008Assignee: Hitachi, Ltd.Inventors: Masamichi Yamada, Masahiro Matsumoto, Hiroshi Nakano, Izumi Watanabe, Keiichi Nakada
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Patent number: 7340571Abstract: In the present invention, archive volumes are created in accordance with the size of data that is to be archived, and hence the storage regions are used in an efficient manner. The archive server acquires the data to be archived, via the application server, and detects the size of that data. The archive server issues an instruction to the storage device to cause the the storage device to generate an archive volume having a volume size corresponding to the data size of the data to be archived. The archive server writes the data to be archived to the volume having a storage capacity of the required size, and an access restriction and retention term are respectively established for the volume.Type: GrantFiled: October 29, 2004Date of Patent: March 4, 2008Assignee: Hitachi, Ltd.Inventor: Nobuyuki Saze
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Patent number: 7337889Abstract: An automated teller machine for handling a paper money, has a paper money path for transferring the paper money along a predetermined direction, and a detector for measuring a condition of the paper money, comprising a light beam emitter for emitting a light beam toward the paper money, and a light beam receiver for receiving at least one of the light beam reflected by the paper money and the light beam passing through the paper money.Type: GrantFiled: August 8, 2001Date of Patent: March 4, 2008Assignee: Hitachi, Ltd.Inventors: Junichi Tamamoto, Yoshiyuki Omori, Mizuki Kaii, Kazushi Yoshida
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Publication number: 20080047516Abstract: A plurality of advanced angle chamber oil paths communicated to advanced angle hydraulic chambers and a plurality of retarded angle chamber oil paths communicated to retarded angle hydraulic chambers according to a change in rotating angle of a cam shaft are provided. The plurality of advanced angle chamber oil paths and the plurality of retarded angle chamber oil paths, respectively, are switched between communication and cut-off according to a rotating angle of the cam shaft. When torque in the direction of advanced angle acts in an advanced angle mode for phase shifting in the direction of advanced angle, the advanced angle hydraulic chambers are caused to communicate to a hydraulic power source and the retarded angle hydraulic chambers are caused to communicate to a drain.Type: ApplicationFiled: August 7, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventors: Isao HAYASE, Seiji Suga, Yoshinori Ichinosawa, Tomoya Tsukada
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Publication number: 20080048491Abstract: A brake control system includes a plurality of fluid channels communicating from a hydraulic pressure source to a reservoir for controlling brake hydraulic pressures supplied to respective brake calipers by a plurality of hydraulic pressure control valves arranged in the respective fluid channels, wherein valve drive circuits for controlling the hydraulic pressure control valves are provided, two power relays for supplying power are connected to the plurality of valve drive circuits and when all hydraulic pressure control valves arranged in one fluid channel are normally open valves which communicate the hydraulic pressure source to the reservoir when nonenergized, different power relays are used for at least two valve drive circuits in the valve drive circuit corresponding to all the hydraulic pressure control valves to thereby prevent a malfunction of one power relay from causing all brake hydraulic pressures to fall.Type: ApplicationFiled: August 6, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventors: Kenichiro MATSUBARA, Hitoshi Kobayashi, Toshiyuki Innami, Kimio Nishino, Toshiharu Sugawara, Akihiro Sato, Katsuhiko Wakabayashi
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Publication number: 20080048824Abstract: In a method of resistance adjustment, a resistance adjusting element and a resistance adjusting device, in order to readily recognize a terminal end of a cut-off part for connecting cut-off parts when a resistance film is cut off at several times and to prevent a resistance value from changing due to cracking of the resistance film, the resistance adjustment having preliminary resistance adjustment carried out before an electronic circuit board is incorporated in the associated equipment, and final resistance adjustment which is carried out after the electronic circuit board is incorporated in the associated equipment, the preliminary resistance adjustment forming a first cut-off part in the resistance film and forming a second cut-off part serving as a marker in the resistance film, so as to be connected to the first cut-off part substantially at a position of one end of the first cut-off part, and the final resistance adjustment recognizing the position of the second cut-off part, and forming the third cut-Type: ApplicationFiled: August 7, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventor: Kouichi NAKAYAMA
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Publication number: 20080048596Abstract: An electric braking apparatus having a conversion mechanism for generating a force for pressing or separating a brake friction member based on a rotational torque generated by an electric motor, wherein a rotor angle position state of the electric motor and a brake process of the brake friction member which is pressed or separated are detected from rotational information of a rotational information obtaining unit, it is detected that the electric motor has reached a predetermined rotational state based on the detected value, and a relationship between a pressure command and the rotor angle position of the electric motor is corrected based on the current value information of the electric motor.Type: ApplicationFiled: August 8, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventors: Yasufumi KONISHI, Satoru Kuragaki
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Publication number: 20080049276Abstract: A storage control apparatus capable of rapidly carrying out data processing according to requests from upper order apparatus, and capable of rapidly returning the results of processing to the upper order apparatus is provided. A computer system comprised of upper order apparatus and storage control apparatus is disclosed. The upper order apparatus accesses a virtual volume. A pool volume is allocated to the virtual volume. The pool volume is provided with a storage region of storage discs. The pool volume classifies data sent from the upper order apparatus for every type into text data, block data, and large sized data. The storage control apparatus then recognizes the types of data and stores the data on respective volumes.Type: ApplicationFiled: October 18, 2006Publication date: February 28, 2008Applicant: HITACHI, LTD.Inventor: Tetsuya Abe
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Publication number: 20080049577Abstract: There are provided an optical disk device and tilt correction processing method for performing recording/reproduction by rapidly acquiring an optimal tilt correction value for an optical disk having a plurality of recording/reproducing layers. In an optical disk device capable of recording or reproducing information by irradiating a laser beam to each of a plurality of recording/reproducing layers of an optical disk, the tilt value is stepwise set within a predetermined range at a predetermined radius position of the recording/reproducing layer located at the farthest distance from the laser beam irradiation side so that an optimal tilt correction value can be obtained from the quadratic function by the method of least squares of the jitter or the like obtained from the disk. By applying the optimal tilt value obtained to the other recording/reproducing layer, it is possible to start recording or reproduction in a short time.Type: ApplicationFiled: October 12, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventors: Koji Iijima, Motoyuki Suzuki, Junji Nakajima
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Publication number: 20080049477Abstract: The present invention provides a power converter having a structure capable of reducing switching noise and insusceptible to switching noise. The power converter comprises a semiconductor device, a driver device, a current sensor, a control device, and a capacitor. The semiconductor device has a plurality of switching elements for converting a direct current to an alternating current, the direct current being supplied from a direct current terminal. The driver device controls an operation of the plurality of switching elements provided in the semiconductor device. The current sensor detects the alternating current. The control device controls an operation of the driver device in accordance with the alternating current that has been detected by the current sensor. The capacitor is connected with the direct current terminal. The driver device and the control device are mounted on the same printed board. The driver device is arranged above the semiconductor device.Type: ApplicationFiled: July 19, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventors: Shinichi Fujino, Jun Sato, Sadashi Seto
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Publication number: 20080047340Abstract: A thermal type gas flowmeter comprising a sensor element which, in turn, comprises at least one first heating resistor, two or more resistors in fluid and a second heating resistor which is disposed between the first heating resistor and a housing supporting the sensor element. The first and second heating resistors are electrically independent from each other. A temperature sensing unit is provided between the first and second heating resistors. A temperature of the first or second heating resistor is controlled by a temperature sensed by the temperature sensing unit.Type: ApplicationFiled: July 27, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventors: Noboru TOKUYASU, Hiroaki Hoshika, Kaori Kashio, Mituharu Osaka, Toshiki Ohtsuki, Yoshihiro Sukegawa
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Publication number: 20080049476Abstract: The present invention provides a highly reliable electric power converter reduced in parasitic inductance.Type: ApplicationFiled: July 19, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventors: Katsunori AZUMA, Mutsuhiro Mori, Kinya Nakatsu
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Publication number: 20080052299Abstract: A reverse engineering support system is provided which has a high abstract degree of an analysis target system and supports high level understanding. The reverse engineering support system stores a physical model which is a graph having as vertexes a program and input/output physical data, a business model which is a graph having as vertexes a business function and input/output logical data and an association model which is an association table indicating association of the business function with the program function and association of the logical data with the physical data, calculates a subgraph corresponding to the business function specified by a user by analyzing the corresponding physical model, displays a comparison with the subgraph of the physical model, and receives a modification order of the business and association models from the user.Type: ApplicationFiled: January 31, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventors: Hirofumi Shinke, Takashi Kashimoto, Kazuyuki Aoyama
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Publication number: 20080047744Abstract: In a multi-layer wiring board in which board wirings are arranged in a plurality of wiring layers so as to be connected via a through hole, two through holes are provided in parallel, and two through holes are connected therebetween in both end portions of the respective through holes or one end portion thereof by the wiring board.Type: ApplicationFiled: October 12, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventor: Yoshifumi Takada
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Publication number: 20080047341Abstract: An object of the invention is to realize a thermal gas flow sensor capable of reducing time fluctuation of a heating resistor. A heating resistor 3 and thermometric resistors 4 and 14 are formed on a surface of a thin-wall portion 2. Electrode drawn wires 18 to 23 and pad portions 8 to 13 are formed so as to draw signal lines from the heating resistor 3 and the thermometric resistors 4 and 14. Contact portions 24 to 29 are formed to come in contact with the heating resistor 3, the thermometric resistors 4 and 14, and the electrode drawn wires 18 to 23. The heating resistor 3 and the thermometric resistors 4 and 14 are covered with protective films 30a, 30b, and 31a and insulating films 31b and 30c. The protective films 31a and 31b are formed of a dense film formed of nitride or the like. A part coming in contact with a drawn wire portion 34 and the heating resistor 3 is covered with a contact barrier metal film 36 (titanium-based electrical conductor such as titanium nitride, titanium tungsten, and titanium).Type: ApplicationFiled: July 23, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventors: Yasuhiro KANAMARU, Keiji Hanzawa
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Patent number: 7336664Abstract: The present invention improves input/output speed by multiplexing/demultiplexing data and also reducing the processing time required for interrupt handling. The present invention involves a process which requests input/output operation; an adapter which performs input/output operation based on the request from the process; and a scheduler which keeps the process in wait state while the adapter is performing input/output operation. When the input/output operation of the adapter is completed, the state of the process waiting for the completion of the operation is changed into “runnable” by the adapter, and the execution of the process which requested input/output operation is thereby restarted.Type: GrantFiled: December 17, 2002Date of Patent: February 26, 2008Assignee: Hitachi, Ltd.Inventor: Frederico Buchholz Maciel
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Patent number: 7337200Abstract: A storage sub-system employs a staging control information table by which staging of data to be read and redundant data thereof can be executed together to reduce response time in the event of a data read failure. The staging control information table also permits pre-read staging to be executed in the forward, backward or both the forward and backward directions, to reduce response time.Type: GrantFiled: March 21, 2005Date of Patent: February 26, 2008Assignee: Hitachi, Ltd.Inventors: Atsushi Ishikawa, Yoshiko Matsumoto, Kenichi Takamoto
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Patent number: 7336247Abstract: An image display device incorporates a group of pixels of two or more types, each pixel including a light source whose primary wavelength is specific to the type of pixel; a generating device for generating analog pixel signals to be input to the group of pixels from input digital pixel data, wherein the generating device has a converter to convert input digital pixel data into different output digital pixel data appropriate for each type of pixel where the output digital pixel data contains more bits than the input digital pixel data; and an input device for inputting the analog pixel signals to the group of pixels, each pixel including a light emission driver for driving the light source according to the analog pixel signal. An organic EL display device having individual R, G, and B light emission elements enables displaying in desired colors and controllable tones with reduced packaging area for the components of the organic EL display.Type: GrantFiled: January 13, 2003Date of Patent: February 26, 2008Assignee: Hitachi Ltd.Inventors: Hajime Akimoto, Takahiro Nagano, Takeo Shiba