Patents by Inventor Shigeru Arai

Shigeru Arai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20080137113
    Abstract: An image processing apparatus, has: a conversion unit that converts input image information including a first color component and a second color component into output image information in which, with regard to each of the color components, the number of gray levels per pixel is smaller than the number of gray levels per pixel in the input image information and a gray level of the input image information is expressed by a gray level value of each pixel and a dot density and in which the size of a dot is different between the first color component and the second color component; and an output unit that outputs the output image information obtained by the conversion unit.
    Type: Application
    Filed: June 14, 2007
    Publication date: June 12, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takeshi Saito, Kazuo Asano, Toru Misaizu, Shigeru Arai
  • Publication number: 20070227614
    Abstract: A hydrogen compressor system comprises a hydrogen generating apparatus for generating hydrogen gas to be supplied to a fuel cell vehicle and a multi-stage reciprocating compressor for pressurizing the hydrogen gas generated by the hydrogen generating apparatus. High pressure tanks having maximum use pressure of 20 MPa are connected to middle stages of the multi-stage reciprocating compressor by gas supplying lines via valves. By opening/closing the valves, hydrogen gas in the high pressure tanks can be selectively supplied to the middle stages of the multi-stage reciprocating compressor.
    Type: Application
    Filed: January 25, 2007
    Publication date: October 4, 2007
    Applicant: Hitachi Plant Technologies, Ltd.
    Inventors: Shinichiro Kurita, Shigeru Arai, Akinori Akanuma, Youichirou Fukai, Haruo Miura
  • Publication number: 20070089382
    Abstract: A reciprocating compressor has a plurality of compressor stages each compressing a working gas by combining a cylinder and a plunger, and its discharge pressure exceeds 40 MPa. The compressor stage has a packing seal which seals a shaft of the plunger, and oil pouring means which pours a lubricating oil to the packing seal. A filter removes the lubricating oil poured by the oil pouring means from the working gas. In the filter, a first element using micro glass fiber and a second element using functional activated carbon are coaxially mounted. These two elements are included together in a pressure container. According to the above described construction, in the compressor at a high pressure exceeding 40 MPa, quality of the discharge gas can be kept and the compressor can be made compact.
    Type: Application
    Filed: October 25, 2006
    Publication date: April 26, 2007
    Applicant: Hitachi Plant Technologies, Ltd.
    Inventors: Haruo Miura, Shigeru Arai
  • Patent number: 7052250
    Abstract: A reciprocating compressor, being small-sized and compact, for compressing hydrogen gas to be used in a fuel-cell car, has a crankshaft, to which an end of a connecting rod is connected. The other end of the connecting rod is connected to a crosshead. To the crosshead are connected a pair of shafts, each extending in directions opposing to each other. To each of the shafts is connected a plunger. The each plunger is received within a cylinder at the tip portion thereof. A pair of plungers moves reciprocally on an almost same axis, and the crosshead is formed in one body.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: May 30, 2006
    Assignee: Hitachi Industries Co., Ltd.
    Inventors: Haruo Miura, Shigeru Arai, Youichirou Fukai, Yasuo Fukushima
  • Publication number: 20060049726
    Abstract: There is provided a showcase comprising a display room surrounded with a transparent wall. The costs of rack hanging structure in the display room can be reduced. The showcase comprises the display room surrounded with a transparent wall supported by support pillars erected at four corners of a main body. The rack supporting portion having two or more engaging holes is mounted to the pillar. The rack for displaying commercial goods is hung in the display room by being supported by the rack supporting portion. The rack receiving member receives the rack by engaging with the engaging hole of the rack supporting portion. The rack receiving member is made by bending a metal plate and has an engaging portion made by contact bending of the metal plate which is inserted into and engaged with the engaging hole.
    Type: Application
    Filed: September 6, 2005
    Publication date: March 9, 2006
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Koji Hayase, Koki Kuwabara, Shigeru Arai
  • Publication number: 20050260080
    Abstract: A reciprocating compressor includes: a low-pressure stage compression part for compressing low-pressure working gas supplied from a supply source; two high-pressure stage compression parts for compressing the working gas compressed by the low-pressure stage compression part at two stages; and a crank mechanism for driving the low-pressure stage compression part and the high-pressure stage compression parts. The two high-pressure stage compression parts each have a plunger and a cylinder and are arranged on both sides of the crank mechanism in such a way as to extend coaxially opposite to each other. The low-pressure stage compression part has a piston and a cylinder and is located in the middle of the two high-pressure stage compression parts. The crank mechanism, the low-pressure stage compression part, and the two high-pressure stage compression parts are substantially located in the same plane.
    Type: Application
    Filed: January 25, 2005
    Publication date: November 24, 2005
    Inventors: Haruo Miura, Shigeru Arai, Youichirou Fukai, Yasuo Fukushima
  • Publication number: 20050002297
    Abstract: An optical recording medium is provided with a substrate having a land and a groove alternately arranged in a predetermined direction, a data recording region provided on the land and the groove, and an identification mark recording region recorded with a data block identification mark. The identification mark recording region is provided on only one of the land and the groove.
    Type: Application
    Filed: July 21, 2004
    Publication date: January 6, 2005
    Inventors: Hideki Nishimoto, Yasuaki Morimoto, Shigeru Arai, Takehiko Numata, Shigenori Yanagi, Jun Aoki
  • Publication number: 20040257971
    Abstract: An optical recording medium is provided with a substrate having a land and a groove alternately arranged in a predetermined direction, a data recording region provided on the land and the groove, and an identification mark recording region-recorded with a data block identification mark. The identification mark recording region is provided on only one of the land and the groove.
    Type: Application
    Filed: July 21, 2004
    Publication date: December 23, 2004
    Applicant: Fujitsu Limited
    Inventors: Hideki Nishimoto, Yasuaki Morimoto, Shigeru Arai, Takehiko Numata, Shigenori Yanagi, Jun Aoki
  • Publication number: 20040057842
    Abstract: A reciprocating compressor, being small-sized and compact, for compressing hydrogen gas to be used in a fuel-cell car, has a crankshaft, to which an end of a connecting rod is connected. The other end of the connecting rod is connected to a crosshead. To the crosshead are connected a pair of shafts, each extending in directions opposing to each other. To each of the shafts is connected a plunger. The each plunger is received within a cylinder at the tip portion thereof. A pair of plungers moves reciprocally on an almost same axis, and the crosshead is formed in one body.
    Type: Application
    Filed: June 23, 2003
    Publication date: March 25, 2004
    Applicant: Hitachi Industries Co., Ltd.
    Inventors: Haruo Miura, Shigeru Arai, Youichirou Fukai, Yasuo Fukushima
  • Patent number: 6619814
    Abstract: An object of the present invention is to provide a Showcase which is capable of enlarging a good housing space and which is provided with a lighting system that can be easily maintained, and the Showcase constitutes in a heat insulating wall a storeroom for displaying goods and provides a flat fluorescent lamp.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: September 16, 2003
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Housaku Hamada, Harunobu Iguchi, Toshiaki Miyatake, Shigeru Arai, Syuuji Kashide, Kazuo Tetukawa
  • Patent number: 6466920
    Abstract: In a method of preventing an illegal use of digital contents, a status information for controlling the replay processing of the digital contents is set in the digital contents. The replay processing of the digital contents is controlled in accordance with a value of the status information thus set. Thereby, a technique can be provided which is capable of preventing the illegal use of the digital contents within the various types of shopping centers and retail outlets.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: October 15, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Nobuya Okayama, Hiroshi Koike, Taminori Tomita, Shigeru Arai
  • Publication number: 20020087475
    Abstract: In a method of preventing an illegal use of digital contents, a status information for controlling the replay processing of the digital contents is set in the digital contents. The replay processing of the digital contents is controlled in accordance with a value of the status information thus set. Thereby, a technique can be provided which is capable of preventing the illegal use of the digital contents within the various types of shopping centers and retail outlets.
    Type: Application
    Filed: February 4, 2002
    Publication date: July 4, 2002
    Inventors: Nobuya Okayama, Hiroshi Koike, Taminori Tomita, Shigeru Arai
  • Patent number: 6292444
    Abstract: There is provided an optical storage device that can position a lens carriage and objective lens even when position sensors for the lens carriage and objective lens are excluded in an effort to make an optical disk unit thinner. When a seek of the carriage relative to an optical disk is started, the carriage is accelerated smoothly, decelerated smoothly, and thus positioned on a target track. The vibration of a lens actuator on the carriage occurring during seek can be minimized, and the lens actuator is locked substantially in the center of the carriage. During a seek operation of the carriage, a false lens signal equivalent to a lens signal used to lock the lens actuator in the center of the carriage is produced using the envelope of a tracking error signal obtained from reflected light of the light beam emanating from the optical disk. With the false lens signal, the lens actuator is locked in the center of the carriage.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: September 18, 2001
    Assignee: Fujitsu Limited
    Inventors: Toru Ikeda, Masateru Sasaki, Akira Minami, Nobuhiko Isato, Shigeru Arai
  • Patent number: 6069858
    Abstract: Functions regarding a mechanical structure are made common so as to enable both of a CD and an MO cartridge to be used by one apparatus. When the CD as an exposed medium is loaded, the apparatus operates as a CD player. When the MO cartridge as a cartridge enclosed medium is loaded, the apparatus operates as an optical disk drive.
    Type: Grant
    Filed: September 25, 1996
    Date of Patent: May 30, 2000
    Assignee: Fujitsu Limited
    Inventors: Tetsu Endo, Kiyoshi Obata, Shigeru Arai
  • Patent number: 6014726
    Abstract: A first host interface circuit for an MO and a second host interface circuit for a CD are provided in order to allowing a common apparatus of two kinds of medium to be seemed as independent drives, for example, a CD player and an MO drive for a host. The first host interface circuit for the MO and the second host interface circuit for the CD are allocated to a master and a slave by peculiar ID numbers in a host interface. The first host interface circuit for the MO executes a reception of a command for the MO from and a response to the host interface. The second host interface circuit for the CD executes a reception of a command for the CD from and a response to the host interface.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: January 11, 2000
    Assignee: Fujitsu Limited
    Inventors: Kiyoshi Obata, Shuko Saito, Shigeru Arai
  • Patent number: 5978330
    Abstract: There is provided an optical storage device that can position a lens carriage and objective lens even when position sensors for the lens carriage and objective lens are excluded in an effort to make an optical disk unit thinner. In an optical storage device according to the first aspect of the present invention, when a seek of the carriage relative to an optical disk is started, the carriage is accelerated smoothly, decelerated smoothly, and thus positioned on a target track. The vibration of a lens actuator on the carriage occurring during seek can be minimized, and the lens actuator is locked substantially in the center of the carriage. According to the second aspect, during a seek operation of the carriage, a false lens signal equivalent to a lens signal used to lock the lens actuator in the center of the carriage is produced using the envelope of a tracking error signal obtained from reflected light of the light beam emanating from the optical disk.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: November 2, 1999
    Assignee: Fujitsu Limited
    Inventors: Toru Ikeda, Masateru Sasaki, Akira Minami, Nobuhiko Isato, Shigeru Arai, Takayuki Kawabe
  • Patent number: 5917796
    Abstract: A disk apparatus in which the thickness is suppressed. A recording/reproducing medium containing a disk rotatably in a hard case is moved substantially in a horizontal direction through an opening of the base of the disk apparatus for insertion and ejection operations of the recording/reproducing medium and recording/reproducing operation.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: June 29, 1999
    Assignees: Copal Company Limited, Fujitsu Limited
    Inventors: Mitsuo Takahashi, Koji Asako, Kazuhiko Kageyama, Yoshihiro Sato, Shigeru Arai
  • Patent number: 5771217
    Abstract: A disk apparatus in which the thickness is suppressed. A recording/reproducing medium containing a disk rotatably in a hard case is moved substantially in a horizontal direction through an opening of the base of the disk apparatus for insertion and ejection operations of the recording/reproducing medium and recording/reproducing operation.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: June 23, 1998
    Assignees: Copal Company Limited, Fujitsu Limited
    Inventors: Mitsuo Takahashi, Koji Asako, Kazuhiko Kageyama, Yoshihiro Sato, Shigeru Arai
  • Patent number: 5649081
    Abstract: A method and device for pattern processing whereby accurate and effective processing can be carried out as a user desires. A pattern processing device of this invention comprises an information input/output device, an information processing device, and a data storage device; wherein the information processing device comprises pattern processing means, significance describing means, characteristic information input means, characteristic information extraction means, characteristic information describing means, and pattern processing means making reference to characteristic information. Intentions of a user or characteristics of pattern elements or sets of pattern elements are described and added to the pattern data so that this characteristic information can be referred to when pattern data processing is carried out. Thus, it is possible to make accurate representation of pattern data in a computer, and it is also possible to generate or convert patterns as the user desires.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: July 15, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Norihiro Nakajima, Hiroshi Arai, Ichiro Harashima, Yoshiaki Shinotsuka, Tomotoshi Ishida, Motomi Odamura, Shigeru Arai, Takeo Yamada
  • Patent number: 5485560
    Abstract: A drawing information processing method and system adapted to offer a plurality of types of standard display results for each object to-be-displayed through instructions. Data for specifying the form of the object to-be-displayed, and display method data for stipulating a display method showing how the object to-be-displayed is displayed, are stored so as to correspond to each other. The display method data includes data for designating, for example, a display direction, display range, and display position or the like. A plurality of sets of display method data are stored. For displaying, one data which represents a desired status may be selected from a plurality of displaying method data to display the object to-be-displayed in the selected form based on the selected data.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: January 16, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Tomotoshi Ishida, Shunsuke Minami, Yasumasa Kawashima, Hiroshi Arai, Takeo Yamada, Shigeru Arai