Patents Assigned to Hitachi
  • Patent number: 8121398
    Abstract: A two-dimensional sensor is installed inclining at a predetermined angle to a moving direction of a stage on which an object to be inspected is mounted and, in synchronism with the movement of the stage, a picked up image is rearranged so that there can be obtained an image in high-density sampling with a picture-element size or less of the two-dimensional sensor with respect to a wafer. Thus, interpolation calculation during position alignment becomes unnecessary, and size calculation and classification of a defect can be performed with high accuracy.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: February 21, 2012
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Yasuhiro Yoshitake, Hiroyuki Nakano, Yukihiro Shibata
  • Patent number: 8120059
    Abstract: A nitride semiconductor substrate includes a front surface, a rear surface on an opposite side to the front surface, and a first edge portion including a chamfered edge on the front surface. A ratio of an average surface roughness of the front surface to an average surface roughness of the first edge portion is not more than 0.01.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: February 21, 2012
    Assignee: Hitachi Cable, Ltd.
    Inventors: Kazutoshi Watanabe, Takehiro Yoshida
  • Patent number: 8121489
    Abstract: Signals can be superimposed on optical phase even when low-coherency light is used, and a bit rate and a signal coding format similar to those used in ordinary optical communications can be used. A transmitter includes an asymmetric interferometer or an antisqueezed light generator to convert a train of single pulses into a train of dual pulses. A receiver also includes an asymmetric interferometer that provides the same delay time as that between the dual pulses. The receiver allows pulses originating in the same light source to interfere, so that signals can be superimposed on the phase even when a low-coherency light source is used. The delay time (optical path length difference) provided in the asymmetric interferometer is set to be longer than half the period of the pulses outputted from the optical pulse source.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventor: Tatsuya Tomaru
  • Patent number: 8122154
    Abstract: In a storage system that manages update prohibition (WORM) information, when time management is not performed with precision, there arises a possibility that an update prohibition (WORM) attribute may be erased before a preservation period expires.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Junji Ogawa, Yusuke Nonaka
  • Patent number: 8121878
    Abstract: The present invention calculates a predicted accumulative import amount for each chemical substance for each month by using information on a predicted monthly shipping amount and the amount of a chemical substance contained in the product and specifies the chemical substance whose predicted accumulative import amount exceeds a regulation threshold and the time when the import amount exceeds the regulation threshold. The present invention specifies the product containing the chemical substance, calculates the predicted shipping amount of the product from the threshold excess time of the chemical substance to the end of the year, and calculates the loss amount caused by the loss of sales opportunities from the profit per unit sales amount for each product when any regulation measures are not executed on the chemical substance. The present invention finally calculates the ratio of the expense necessary for the measures and the summed value, and displays the ratio.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Masataka Tanaka, Noriyasu Ninagawa, Yuzo Hiroshige, Noriaki Yamamoto
  • Patent number: 8122116
    Abstract: A method for moving a virtual machine is provided which considers an input/output between array groups and virtual machines after being moved. The computer system includes a physical server executing the virtual machines, a storage device having array groups, and a management server that manages a link between the virtual machines and the array groups. The computer system is characterized in that an estimated I/O volume of the virtual machine after being moved is calculated and that, if the estimated I/O volume exceeds the maximum I/O volume of the array group connected to the moved virtual machine, a search is made to find an array group whose maximum I/O volume is smaller than the estimated I/O volume.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Naoyuki Matsunaga, Takato Kusama, Nobuo Beniyama
  • Patent number: 8122212
    Abstract: Logical volume management for storage subsystem in virtual machine environment is disclosed. In one embodiment, a storage system comprises a storage subsystem including a processor, a memory, one or more virtual disks, and one or more logical disks each corresponding to a physical storage area in the storage subsystem; and a host computer connected with the storage subsystem via a network, the host computer including virtual machines running thereon, the virtual machines each being connected to at least one of the virtual disks or logical disks in the storage subsystem. In the storage subsystem, abstract disks each represent one of the virtual disks or logical disks. An abstract disk management table is stored in the memory of the storage subsystem to manage a relationship between the abstract disks and the one or more virtual disks and between the abstract disks and the one or more logical disks.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Toshio Otani, Naoko Ichikawa
  • Patent number: 8120070
    Abstract: A wiring board with an electronic device comprising a plurality of trenches arranged in parallel on a substrate, a common trench communicating the plurality of trenches with each other at one of their ends on the substrate, a metal layer formed at the bottom of the plurality of trenches, and an electrode layer connected with the metal layer and formed on a bottom of the common trench, wherein the electrode layer on the bottom of the common trench constitutes a source electrode or a drain electrode of a field effect transistor, whereby the wiring board and an electronic circuit having a good fine wire pattern and a good narrow gap between the patterns using a coating material can be formed, and a reduction for a cost of an organic thin film electronic device and the electronic circuit can be attained since they can be realized through a development of a printing technique.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Norio Nakazato, Nobuo Fujieda, Masayoshi Ishibashi, Midori Kato, Tadashi Arai, Takeo Shiba
  • Patent number: 8122001
    Abstract: To allow a user to use an appropriate search engine, this invention provides a computer system including: a client computer; a search engine; and a management computer, in which the management computer is configured to: collect logs of access; specify a parameter transferred from the client computer to an access destination of the client computer by analyzing the collected logs of access; judge that an access including a parameter judged as a search query is an access to the search engine; select a log of access to the search engine from the collected logs of access; extract an address of the search engine and the search query from the selected log of access to the search engine; and store a correspondence between the extracted address of the search engine and the extracted search query in a search engine profile.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventor: Yasutsugu Morimoto
  • Patent number: 8121084
    Abstract: A transmission area is specified flexibly in accordance with the contents of a flow. An area identification number (SHOG) is specified for each interlaced stream of wireless base stations. The same flow is sent at the same timing (or substantially at the same timing) in the interlaced stream specified for the same SHOG. A wireless terminal determines a neighbor sector or a neighbor wireless base station sending the same flow, in accordance with information given from the wireless base stations, and receives and combines the flows.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Akihiko Yoshida, Shiro Mazawa, Yosuke Takahashi, Daigo Takayanagi
  • Patent number: 8122072
    Abstract: This content provision system includes a creation unit for associating the first content data and the second content data, assigning a common content ID to the first content data and the second content data, and creating management information of all content data configured from the first content data and the second content data based on the attribute information of content data, an analysis unit for analyzing hobby information of a user based on reference information for deciding hobby information of a user, a search unit for searching content data that coincides with the analyzed hobby information of a user based on the management information of all content data, and a provision unit for providing to a user content information that coincides with hobby information of a user based on the searched content data.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Amano, Shoji Kodama
  • Patent number: 8119260
    Abstract: In a ferromagnetic material containing at least one kind of rare-earth element, a layer containing at least one kind of alkaline earth element or rare-earth element and fluorine is formed at the grain boundary or near the powder surface of the ferromagnetic material. A further layer containing at least one kind of rare-earth element, having a fluorine concentration lower than that of the layer described first and having a rare-earth element concentration higher than that of the host phase of the ferromagnetic material, or an oxide layer containing a rare-earth element is formed in adjacent with a portion of the layer described first.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Matahiro Komuro, Yuichi Satsu, Kunihiro Maeda, Yuzo Kozono
  • Patent number: 8119495
    Abstract: There is provided a technique for improving the flatness at the surface of members embedded in a plurality of recesses without resulting in an increase in the time required for the manufacturing processes. According to this technique, the dummy patterns can be placed up to the area near the boundary BL between the element forming region DA and dummy region FA by placing the first dummy pattern DP1 of relatively wider area and the second dummy pattern DP2 of relatively small area in the dummy region FA. Thereby, the flatness of the surface of the silicon oxide film embedded within the isolation groove can be improved over the entire part of the dummy region FA. Moreover, an increase of the mask data can be controlled when the first dummy patterns DP1 occupy a relatively wide region among the dummy region FA.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: February 21, 2012
    Assignees: Renesas Electronics Corporation, Hitachi ULSI Systems Co., Ltd.
    Inventors: Kenichi Kuroda, Kozo Watanabe, Hirohiko Yamamoto
  • Patent number: 8120698
    Abstract: A focus control apparatus and method capable of shortening a focus adjustment time in focus control. The method includes extracting a first high frequency component depending upon a first cutoff frequency and a second high frequency component depending upon a second cutoff frequency higher than the first cutoff frequency from a video signal, generating first and second contrast signals of the video signal respectively based on the first and second high frequency components, using a quotient obtained by dividing a value of the first contrast signal by that of the second contrast signal as a parameter, exercising focus control based on the parameter, and setting the first and second cutoff frequencies so as to cause a value of the parameter to assume a peak when a focus lens in an image pickup apparatus is located in a position at a predetermined distance from an in-focus position.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Tomoaki Nishiguchi, Hideharu Oono
  • Patent number: 8121393
    Abstract: A data processing unit acquires a review image including a pattern defect on a substrate, compares the review image with a reference image thereby to extract a defect image, the reference image including no pattern defect, and performs an alignment between the review image and a self-layer design pattern image which is generated from design data belonging to the identical layer in a region corresponding to the review image. The data processing unit, then, based on result of the alignment, generates an another-layer design pattern image which is generated from design data belonging to another layer in the region corresponding to the review image, and, based on a synthesized image of the defect image and the another-layer design pattern image, determines the relative position relationship between the pattern defect and a pattern belonging to another layer, and judges the criticality based on the relative position relationship.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: February 21, 2012
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Norio Satou, Susumu Koyama, Masashi Sakamoto, Kenji Obara
  • Patent number: 8120560
    Abstract: A system provides an image displaying technique that provides stable high contrast even in an area having high brightness. Based on information about an average brightness level of a digital luminance signal, black-correction processing which decreases a brightness level by offsetting the brightness level to the minus side, and increase processing which increases a contrast gain within a dynamic range, are performed for an analog luminance signal or a digital luminance signal, enabling improvement in contrast even where brightness is intense.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Aoki, Ryo Hasegawa
  • Patent number: 8121776
    Abstract: An incident resolution judgment system and method are provided which reduce processing load on a traffic information center included in an incident detection system. When an incident occurs, the traffic information center generates an incident resolution judgment condition, which is used by each vehicle to judge whether the incident is resolved, and transmits the generated incident resolution judgment condition to each vehicle. Each vehicle judges in accordance with its travel history information and the received incident resolution judgment condition whether the incident is resolved. When the incident is judged to be resolved, each vehicle notifies the traffic information center that the incident is resolved. In accordance with incident resolution detection results produced by a plurality of vehicles, the traffic information center forms a final judgment to indicate that the incident is actually resolved and notifies each vehicle of incident resolution.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Tomoaki Hiruta, Masatoshi Kumagai, Takayoshi Yokota, Koichiro Tanikoshi
  • Patent number: 8122075
    Abstract: A pseudorandom number generator reduced in size while maintaining high security is disclosed. The generator has a state storage unit of 2 blocks (n bits per block) and a buffer of plurality of blocks, and mixes their contents to obtain a random number sequence. The mixing is done by a nonlinear transformation unit for inputting the stored content of the buffer to output data of the same size as the input data, a first linear transformation unit for inputting the content of the state storage unit and the output of the nonlinear transformation unit to store an output into the state storage unit, and a second linear transformation unit for inputting the stored content of the buffer and the stored content of the state storage unit to store an output into the buffer. The mixed content of the state storage unit is output as a random number sequence.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Dai Watanabe, Hirotaka Yoshida
  • Publication number: 20120038236
    Abstract: A permanent magnet rotating electric machine comprises a stator having stator windings wound round a stator iron core and a permanent magnet rotor having a plurality of inserted permanent magnets in which the polarity is alternately arranged in the peripheral direction in the rotor iron core. The rotor iron core of the permanent magnets is composed of magnetic pole pieces, auxiliary magnetic poles, and a stator yoke, and furthermore has concavities formed on the air gap face of the magnetic pole pieces of the rotor iron core of the permanent magnets, gently tilting from the central part of the magnetic poles to the end thereof. In a permanent magnet rotating electric machine, effects of iron loss are reduced, and an electric car using highly efficient permanent magnet rotating electric machine are realized.
    Type: Application
    Filed: October 24, 2011
    Publication date: February 16, 2012
    Applicant: Hitachi, Ltd.
    Inventors: Fumio Tajima, Yutaka Matsunobu, Masashi Kitamura, Noriaki Hino, Takashi Kobayashi, Shigeru Kakugawa, Takashi Yasuhara
  • Publication number: 20120037352
    Abstract: A vehicular air conditioning system capable of suppressing the power consumption of a refrigerating cycle is disclosed. The vehicular air conditioning system comprises a refrigerating cycle circuit comprising a compressor, an outside heat exchanger and an inside air conditioning heat exchanger annularly connected in order, and a device cooling circuit comprising a heating unit, an inside cooling heat exchanger, an intermediate heat exchanger and a pump being annularly connected, the intermediate heat exchanger being constructed such that one end of a piping of the cooling medium for air conditioning is connected to a liquid piping, the liquid piping providing connection between the outside heat exchanger and the inside air conditioning heat exchanger, and an opposite end of the piping of the cooling medium for air conditioning is connected to a suction port of the compressor.
    Type: Application
    Filed: August 9, 2011
    Publication date: February 16, 2012
    Applicant: Hitachi, Ltd.
    Inventors: Tadashi OSAKA, Hiroaki MATSUSHIMA, Sachio SEKIYA, Yuto IMANISHI