Patents by Inventor Hiroshi Satou
Hiroshi Satou 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).
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Patent number: 6937429Abstract: In a magnetic disk storage apparatus, when power supply is stopped, a magnetic head can be retracted safely and quickly so as not to be damaged. There are provided a back electromotive a force detector that detects back electromotive forces developed in coils of a voice coil motor for moving a magnetic head when power a supply is stopped, and a brake controller that judges a movement speed of the magnetic head from the detected back electromotive forces, and brakes the voice coil motor when the movement speed is greater than a preset first limited speed.Type: GrantFiled: May 13, 2002Date of Patent: August 30, 2005Assignees: Hitachi ULSI Systems Co., Ltd., Renesas Technology CorporationInventors: Kenji Yoshida, Hiroshi Satou, Kenji Nishimura
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Publication number: 20050134287Abstract: There is provided a test apparatus including: a test module operable to supply test patterns to the electronic device; a main signal source operable to generate a first timing signal in accordance with a phase of the supplied timing signal and supply it to the test module; and a sub-signal source operable to receive the timing signal from the main signal source, generate a second timing signal for controlling timing at which the test module supplies the test patterns to the electronic device, and supply it to the test module. The sub-signal source includes a phase adjustment circuit that substantially uniforms the timing at which the main signal source outputs the first timing signal and the timing at which the sub-signal source outputs the second timing signal by delaying the timing signal received from the main signal source.Type: ApplicationFiled: September 10, 2004Publication date: June 23, 2005Applicant: Advantest CorporationInventor: Hiroshi Satou
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Publication number: 20050102570Abstract: A writing control circuit for writing a plurality of pieces of command data supplied from a plurality of host computers onto any of a plurality of register sections is provided which includes a plurality of request signal storing sections provided in a manner to correspond to the plurality of host computers and to store writing request signals supplied from the corresponding host computers, a host selecting section to sequentially select the plurality of request signal storing sections and to receive and output data being stored by the selected request signal storing sections, and a writing section to receive the stored data output by the host selecting section, the command data to be written onto the register section, register section specifying data to specify the register sections onto which the command data is to be written, and to write the command data onto the register sections to be specified by the register section specifying data when the stored data having been received is the writing request signaType: ApplicationFiled: September 10, 2004Publication date: May 12, 2005Applicant: Advantest CorporationInventor: Hiroshi Satou
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Patent number: 6744837Abstract: In a clock switching circuit, a write address is generated based on a pre-switched clock, and the write address is employed to store input data in memory. Then, a read address is generated based on a post-switched clock, and the read address is employed to read data from memory, so that a clock synchronized with the data is changed. There are multiple pre-switched frequencies, and the frequency of a post-switched clock is higher than the frequency of a pre-switched clock. When the pre-switched clock frequency is lower than the post-switched clock frequency, the read address is updated in accordance with a ratio of the frequency of the pre-switched clock to the frequency of the post-switched clock.Type: GrantFiled: August 30, 2000Date of Patent: June 1, 2004Assignee: Oki Electric Industry Co., Ltd.Inventors: Hiroshi Satou, Sadaaki Tanaka, Takeshi Takahashi, Yoshikatsu Uetake
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Publication number: 20030168029Abstract: An electromagnetically driven valve control apparatus and method are provided for an electromagnetically driven valve which has a movable element that is driven by cooperation of a spring force and an electromagnetic force, and a valve body engageable with the movable element, and which causes an open-close motion of the valve body due to the movable element engaging with the valve body in accordance with the driving of the movable element. Positional information regarding the movable element is detected, and adjustment of an electromagnetic force for driving the movable element is performed so that the movable element reaches a target operation state based on the positional information detected and a model of the electromagnetically driven valve obtained as a spring-mass vibration system.Type: ApplicationFiled: February 27, 2003Publication date: September 11, 2003Applicant: Toyota Jidosha Kabushiki KaishaInventors: Toshio Fuwa, Hiroshi Satou
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Patent number: 6552421Abstract: The present invention provides a semiconductor device which is stably operated even with respect to heat generated upon its operation and makes no use of an environmental harmful substance (lead). The semiconductor device includes a support plate for supporting a semiconductor chip and the semiconductor chip fixed onto the support plate with an adhesive interposed therebetween. The semiconductor chip is fixed to the support plate by a highly thermal conductive adhesive and a high junction strength adhesive provided so as to separate bonding areas from one another. The highly thermal conductive adhesive is provided in plural places within the whole fixing area. The highly thermal conductive adhesive is associated with a heated portion of the semiconductor chip. The high junction strength adhesive is provided so as to surround the highly thermal conductive adhesive. Both the adhesives do not contain lead corresponding to the environmental harmful substance.Type: GrantFiled: May 31, 2001Date of Patent: April 22, 2003Assignee: Hitachi, Ltd.Inventors: Munehisa Kishimoto, Toshinori Hirashima, Hiroshi Satou, Hiroi Oka
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Publication number: 20020176202Abstract: In a magnetic disk storage apparatus, when power supply is stopped, a magnetic head can be retracted safely and quickly so as not to be damaged. There are provided a back electromotive force detecting means that detects back electromotive forces developed in coils of a voice coil motor for moving a magnetic head when power supply is stopped, and a brake control means that judges a movement speed of the magnetic head from the detected back electromotive forces, and brakes the voice coil motor when the movement speed is greater than a preset first limited speed.Type: ApplicationFiled: May 13, 2002Publication date: November 28, 2002Applicant: Hitachi, Ltd.Inventors: Kenji Yoshida, Hiroshi Satou, Kenji Nishimura
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Patent number: 6366358Abstract: A printed matter inspection method and device which detects a defect on the printed matter including a partially inputting camera capable of being moved in a width direction of the printed matter by a mover which inputs a partial image of a pattern on the printed matter and a whole image inputting camera disposed apart from the partially inputting camera by a predetermined distance in the direction the printed matter flows which inputs a whole image including the whole pattern and coordinating, based on a relationship between a position on the whole image, of the partial image and a width-directionwise reference point set on the whole image, the width-directionwise position on the whole image and the width-directionwise position on the mover with each other, when the partially inputting camera is located on an origin set on the mover, positioning and then setting a photographing point, which is to be input by said partially inputting camera, on said whole image, calculating a width-directionwise pixel numberType: GrantFiled: June 1, 1998Date of Patent: April 2, 2002Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hiroshi Satou, Hideto Sakata, Masahiko Soeda, Kenta Hayashi
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Publication number: 20010050422Abstract: The present invention provides a semiconductor device which is stably operated even with respect to heat generated upon its operation and makes no use of an environmental harmful substance (lead). The semiconductor device includes a support plate for supporting a semiconductor chip and the semiconductor chip fixed onto the support plate with an adhesive interposed therebetween. The semiconductor chip is fixed to the support plate by a highly thermal conductive adhesive and a high junction strength adhesive provided so as to separate bonding areas from one another. The highly thermal conductive adhesive is provided in plural places within the whole fixing area. The highly thermal conductive adhesive is associated with a heated portion of the semiconductor chip. The high junction strength adhesive is provided so as to surround the highly thermal conductive adhesive. Both the adhesives do not contain lead corresponding to the environmental harmful substance.Type: ApplicationFiled: May 31, 2001Publication date: December 13, 2001Inventors: Munehisa Kishimoto, Toshinori Hirashima, Hiroshi Satou, Hiroi Oka
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Patent number: 5346513Abstract: A method for manufacturing a semiconductor device using an apparatus including a processing chamber having an opening and capable of being vacuum sealed, a carrier member including a substrate holder, an arm member, and a substrate carrier which vertically reciprocates in the opening of the processing chamber. A vacuum bellows is divided into an upper bellows and a lower bellows that are attached to a hollow flange therebetween. The upper bellows is a double structure having an inner bellows and an outer bellows. An air inlet is formed in the hollow flange and air is introduced through the inlet into a ring-shaped space between the inner bellows and the outer bellows.Type: GrantFiled: May 24, 1993Date of Patent: September 13, 1994Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takao Taniguchi, Hiroshi Satou
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Patent number: 5327425Abstract: A Local Area Network (LAN) is disclosed in which each node includes means for receiving clock signal information from an external network, which may by way of example be another LAN or a wide area network (WAN), and for generating therefrom clock signals for each node of the local network to accommodate synchronous information exchanges with the external network. Any one of the nodes of the local LAN network may act as a Control Node, and any one of the remaining nodes upon instruction from the Control Node may act as a primary Transmission Node for generating clock signals based upon the external network clock signals for all of the nodes of the local LAN network.Type: GrantFiled: September 10, 1992Date of Patent: July 5, 1994Assignees: Hitachi, Ltd., Hitachi Computer Engineering Co., Ltd., Hitachi Software Engineering Co., Ltd.Inventors: Tokuhiro Niwa, Masashi Fukuda, Ryouichi Matusita, Tutomu Koita, Ihei Kajiya, Hiroshi Satou
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Patent number: 5266119Abstract: A semiconductor device producing apparatus includes a processing chamber having an opening and capable of being vacuum sealed, a carrier member including a substrate holder, an arm member, and a substrate carrier which vertically reciprocates in the opening of the processing chamber. A vacuum bellows is divided into an upper bellows and a lower bellows that are attached to a hollow flange therebetween. The upper bellows is a double structure having an inner bellows and an outer bellows. An air inlet is formed in the hollow flange and air is introduced through the inlet into a ring-shaped space between the inner bellows and the outer bellows. Therefore, thrust caused by the vacuum in the processing chamber and applied to the hollow flange is cancelled by the pressure of the introduced air whereby a load on the driving part is relieved. As a result, a small-sized and inexpensive semiconductor device producing apparatus is obtained.Type: GrantFiled: March 23, 1992Date of Patent: November 30, 1993Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takao Taniguchi, Hiroshi Satou
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Patent number: 4954215Abstract: This invention relates to a method for manufacturing a highly reliable stress detector. Conventionally, a step of bonding and securing magnetic elements (4) to a driven shaft (1) receiving a stress was needed, so that a high technique was needed to secure the magnetic elements (4) uniformly at the entire surface and transversely symmetrically, disadvantageously increasing the process cost.The present invention therefore has as its object the manufacture of a reliable stress detector by simplifying the process of securing the magnetic elements (4) and realizing a good attachment. According to this invention, a strip of magnetic thin sheet is secured around the driven shaft receiving a stress, and a selective coating removal treatment is applied to the magnetic thin sheet secured to the driven shaft to form magnetic elements parallelly arranged at a predetermined angle relative to the central axis of the driven shaft.Type: GrantFiled: May 5, 1989Date of Patent: September 4, 1990Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroshi Satou, Yoshihiko Utsui, Kiyotugu Tuneyoshi, Takashi Taniguchi, Kousuke Haraga, Keitarou Tsukui
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Patent number: 4926487Abstract: A speaker system for reproducing heavy low sounds comprises a tube body having a tubular straight portion and a pair of tubular arms, each of the arms extending substantially in parallel to each other in the forward direction to provide therebetween a wide space opening forward for accommodation, each arm further having sound radiation outlets formed in its forward end portion. A speaker driver is attached to the forward end of one of the arms and communicating with the sound radiation outlets, and a drone cone attached to the forward end of the other of the arms and communicating with the sound radiation outlets.Type: GrantFiled: March 15, 1989Date of Patent: May 15, 1990Assignee: Sanyo Electric Co., Ltd.Inventors: Tetsuji Yoshida, Yoshiaki Teraoka, Yoji Ogawa, Ken Kozaki, Kenji Hara, Hiroshi Satou, Akira Yoshino
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Patent number: 4626561Abstract: A composite material having a high molecular weight polymer material as the matrix material and extremely fine particles of diameters of the order of tens to hundreds of angstroms dispersed in the matrix material is obtained by rapidly adiabatically cooling vapor of a metallic material through a nozzle, and squirting a jet of said fine particles into a molten mass of the high molecular weight polymer material. Optionally, inert gas may be squirted through the nozzle along with the vapor of the metallic material. Further, optionally a gas which forms a compound with the metallic material may be squirted through the nozzle with vapor of the metallic material, so that the particles become particles of a compound of the metallic material and the gas.Type: GrantFiled: May 17, 1984Date of Patent: December 2, 1986Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hirohisa Miura, Hiroshi Satou, Toshio Natsume, Hidenori Katagiri
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Patent number: 4626410Abstract: A composite material having a first metallic material as the matrix material and extremely fine particles of diameters of the order of tens to hundreds of angstroms of a second metal dispersed in this metallic matrix material is obtained by rapidly adiabatically cooling vapor of the second metallic material through a nozzle, and squirting a jet of fine particles produced thereby into a molten mass of the first material. Optionally, inert gas may be squirted through the nozzle along with the vapor of the second metallic material.Type: GrantFiled: June 13, 1984Date of Patent: December 2, 1986Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hirohisa Miura, Hiroshi Satou, Toshio Natsume, Hidenori Katagiri, Yoshiro Hayashi, Masahiro Taguchi
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Patent number: 4617055Abstract: A ceramic surface-metallic core particle composite fine powder material is disclosed, composed of fine particles each having a metallic core and a ceramic surface layer, in which the average value of the ratio of the thickness of the surface layer of a powder particle to the radius of the particle is subtantially greater than 0.05. A method and an apparatus for making this material from core metal and a gas which combines with the core metal to form the ceramic outer layer are also described, in which a gaseous mixture of vapor of the core metal and the gas is passed through a convergent-divergent nozzle and is thereby rapidly cooled by adiabatic expansion so that the core metal as it solidifies forms metal cores for fine particles while the gas reacts with the outer layers of these particles to form ceramic surface layers.Type: GrantFiled: December 3, 1984Date of Patent: October 14, 1986Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hirohisa Miura, Hiroshi Satou, Toshio Natsume, Hidenori Katagiri
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Patent number: 4576725Abstract: A magnetic fluid having a base liquid and magnetic particles with so small average particle diameter as to be of some hundreds of angstroms dispersed in the base liquid. Such a magnetic fluid is produced by ejecting a molten magnetic metal adiabatically from an expansion nozzle against a bath of a base liquid.Type: GrantFiled: June 13, 1984Date of Patent: March 18, 1986Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hirohisa Miura, Hiroshi Satou, Hidenori Katagiri, Toshio Natsume, Hidekazu Azuma
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Patent number: 4526610Abstract: A ceramic surface-metallic core particle composite fine powder material is disclosed, composed of fine particles each having a metallic core and a ceramic surface layer, in which the average value of the ratio of the thickness of the surface layer of a powder particle to the radius of the particle is substantially greater than 0.05. A method and an apparatus for making this material from core metal and a gas which combines with the core metal to form the ceramic outer layer are also described, in which a gaseous mixture of vapor of the core metal and the gas is passed through a convergent-divergent nozzle and is thereby rapidly cooled by adiabatic expansion so that the core metal as it solidifies forms metal cores for fine particles while the gas reacts with the outer layers of these particles to form ceramic surface layers.Type: GrantFiled: April 1, 1983Date of Patent: July 2, 1985Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hirohisa Miura, Hiroshi Satou, Toshio Natsume, Hidenori Katagiri
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Patent number: 4508682Abstract: A composite material including matrix metal and ceramic surface - metallic core fine powder material is disclosed, composed of fine particles each having a metallic core and a ceramic surface layer, in which the average value of the ratio of the thickness of the surface layer of a powder particle to the radius of the particle is substantially greater than 0.05, dispersed within a matrix of matrix metal.Type: GrantFiled: April 1, 1983Date of Patent: April 2, 1985Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hirohisa Miura, Hiroshi Satou, Toshio Natsume, Hidenori Katagiri