Patents by Inventor Yoshiaki Usami

Yoshiaki Usami 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: 20200358363
    Abstract: A power converter includes a first circuit including an inductor and configured to convert an input voltage into a first voltage, a second circuit including a transformer and configured to convert the first voltage input to the insulating transformer to a second voltage, a control circuit configured to control the first circuit, a first power supply circuit including a first winding magnetically coupled to the inductor and configured to output a third voltage generated by the first winding to the first control circuit, and a second power supply circuit including a second winding magnetically coupled to the transformer and configured to output a fourth voltage generated by the second winding to the first control circuit. When the second voltage is not output the third voltage is output to the control circuit, and when the second voltage is output the fourth voltage is output to the control circuit.
    Type: Application
    Filed: March 24, 2020
    Publication date: November 12, 2020
    Inventors: Yoshiaki HOSOKAWA, Yutaka USAMI
  • Patent number: 10671010
    Abstract: According to one embodiment, a power converting device includes a rectifier bridge configured to pulsate an AC voltage to generate a pulsating voltage, a first smoothing capacitor configured to smooth the pulsating voltage to generate a DC voltage, a primary winding connected to the first smoothing capacitor, a switch circuit configured to switch the DC voltage supplied from the first smoothing capacitor to the primary winding, and a first discharge circuit. The first discharge circuit includes a first discharge resistor configured to discharge electric charges remaining on the first smoothing capacitor and a first switch element configured to release the first discharge resistor from the first smoothing capacitor if the AC voltage is supplied and to connect the first discharge resistor to the first smoothing capacitor if the AC voltage is not supplied and the electric charges remain on the first smoothing capacitor.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: June 2, 2020
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Yoshiaki Hosokawa, Yutaka Usami
  • Publication number: 20190212690
    Abstract: According to one embodiment, a power converting device includes a rectifier bridge configured to pulsate an AC voltage to generate a pulsating voltage, a first smoothing capacitor configured to smooth the pulsating voltage to generate a DC voltage, a primary winding connected to the first smoothing capacitor, a switch circuit configured to switch the DC voltage supplied from the first smoothing capacitor to the primary winding, and a first discharge circuit. The first discharge circuit includes a first discharge resistor configured to discharge electric charges remaining on the first smoothing capacitor and a first switch element configured to release the first discharge resistor from the first smoothing capacitor if the AC voltage is supplied and to connect the first discharge resistor to the first smoothing capacitor if the AC voltage is not supplied and the electric charges remain on the first smoothing capacitor.
    Type: Application
    Filed: November 29, 2018
    Publication date: July 11, 2019
    Inventors: Yoshiaki Hosokawa, Yutaka Usami
  • Patent number: 10295743
    Abstract: Disclosed is an optical semiconductor device which can be improved in light shift precision and restrained from undergoing a loss in light transmission. In this device, an inner side-surface of a first optical coupling portion of an optical coupling region and an inner side-surface of a second optical coupling portion of the region are increased in line edge roughness. This manner makes light coupling ease from a first to second optical waveguide. By contrast, the following are decreased in line edge roughness: an outer side-surface of the first optical coupling portion of the optical coupling region; an outer side-surface of the second optical coupling portion of the region; two opposed side-surfaces of a portion of the first optical waveguide, the portion being any portion other than the region; and two opposed side-surfaces of a portion of the second optical waveguide, the portion being any portion other than the region.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: May 21, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Hiroyuki Kunishima, Yasutaka Nakashiba, Masaru Wakabayashi, Shinichi Watanuki, Ken Ozawa, Tatsuya Usami, Yoshiaki Yamamoto, Keiji Sakamoto
  • Patent number: 7433493
    Abstract: A technique for detecting an abnormal behavior by monitoring moving objects such as human being and a car. The place where the abnormal behavior of the moving objects occurs is deduced from the position of the moving object and the direction in which the moving object moves and presented to the car. An abnormal detector comprises means for determining the position of the moving object and the direction in which the moving object moves, means for determining the place where an abnormal incident causing an abnormal behavior of the moving object occurs on the basis of the determined position and direction, and means for displaying the place where the abnormal incident occurs. Therefore it is possible to immediately know the cause of the abnormal behavior of the moving object from the video information collected by observation monitoring moving objects such as a human being and a car.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: October 7, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Masanori Miyoshi, Yoshiaki Usami, Kazuya Takahashi, Norito Watanabe, Hideki Fujii
  • Publication number: 20030135387
    Abstract: A transmitter-receiver 11 accepts delinquency information indicating a delinquent situation of a repairing reserve to be paid by a comparted owner of an apartment house from a financial institution terminal 3. On the basis of the delinquency information, a delinquency rate forecasting unit 21 forecasts an average delinquency rate and its standard deviation. A marginal stress searching unit 20 calculates a cumulative reserve and calculates a marginal stress under a constraint that a cumulative reserve is not below an expenditure. A less marginal probability calculating unit 21 calculates a probability of the marginal stress or less. A permissible risk checking unit 18 checks whether or not its probability is within a tolerance range, and a revised amount calculating unit 17 revises a repairing reserve amount if the probability is beyond the tolerance range.
    Type: Application
    Filed: February 25, 2003
    Publication date: July 17, 2003
    Applicant: HITACHI, LTD.
    Inventors: Yuichi Ikeda, Hiroshi Shojima, Yoshiaki Usami, Masanori Miyoshi
  • Publication number: 20030018518
    Abstract: A transmitter-receiver 11 accepts delinquency information indicating a delinquent situation of a repairing reserve to be paid by a comparted owner of an apartment house from a financial institution terminal 3. On the basis of the delinquency information, a delinquency rate forecasting unit 21 forecasts an average delinquency rate and its standard deviation. A marginal stress searching unit 20 calculates a cumulative reserve and calculates a marginal stress under a constraint that a cumulative reserve is not below an expenditure. A less marginal probability calculating unit 21 calculates a probability of the marginal stress or less. A permissible risk checking unit 18 checks whether or not its probability is within a tolerance range, and a revised amount calculating unit 17 revises a repairing reserve amount if the probability is beyond the tolerance range.
    Type: Application
    Filed: March 18, 2002
    Publication date: January 23, 2003
    Inventors: Yuichi Ikeda, Hiroshi Shojima, Yoshiaki Usami, Masanori Miyoshi
  • Publication number: 20030009363
    Abstract: Even if a layout of a facility is appropriate in the beginning, the layout may gradually become inappropriate with the passage of time. However, since the conventional technologies can not automatically grasp the appropriateness of layout at present, there has been a problem that it is impossible to change the layout of the facility at an appropriate timing.
    Type: Application
    Filed: January 9, 2002
    Publication date: January 9, 2003
    Inventors: Masanori Miyoshi, Hiroshi Shojima, Yoshiaki Usami, Kazuya Takahashi
  • Publication number: 20030009364
    Abstract: Since it is not possible to automatically determine the appropriateness of a layout at present, there has been a problem in that it is impossible to change the layout of the facility at an appropriate timing. To solve this problem, the appropriateness a facility is judged based on a movement cost calculated using an automatically measured flow line of a moving body. In order to attain such a result, flow line-measuring is carried out for measuring the flow line of a moving body by detecting the moving body as an object to be monitored; movement cost-calculating is carried out for calculating a cost expended on movement of the moving body derived from low line information; and movement cost-evaluating is carried out for judging whether or not a cost calculated by the movement cost-calculating process is within a permissible range.
    Type: Application
    Filed: July 1, 2002
    Publication date: January 9, 2003
    Inventors: Masanori Miyoshi, Hiroshi Shojima, Yoshiaki Usami, Kazuya Takahashi
  • Publication number: 20020178040
    Abstract: It is difficult for the facility owner to decide a most suitable combination from many maintenance companies by himself. Further, it is difficult to evaluate maintenance services only by price. In order to solve the above problem, when the facility manager is entrusted with management of the facilities from the facility owner, he analyzes the service characteristics of the facility maintenance companies, prepares combinations of maintenance companies having a same service trend, and indicates maintenance information of the facilities and an evaluated value on the basis of opinions of users and the facility companies select maintenance services of facility management from the combinations by referring to the evaluated value. In this case, the service evaluated value on the basis of the maintenance information of the facilities and users' opinions is also indicated at the same time.
    Type: Application
    Filed: July 17, 2002
    Publication date: November 28, 2002
    Inventors: Yoshiaki Usami, Masanori Miyoshi, Hiroshi Shojima
  • Publication number: 20020072943
    Abstract: It is difficult for the facility owner to decide a most suitable combination from many maintenance companies by himself. Further, it is difficult to evaluate maintenance services only by price. In order to solve the above problem, when the facility manager is entrusted with management of the facilities from the facility owner, he analyzes the service characteristics of the facility maintenance companies, prepares combinations of maintenance companies having a same service trend, and indicates maintenance information of the facilities and an evaluated value on the basis of opinions of users and the facility companies select maintenance services of facility management from the combinations by referring to the evaluated value. In this case, the service evaluated value on the basis of the maintenance information of the facilities and users' opinions is also indicated at the same time.
    Type: Application
    Filed: December 7, 2001
    Publication date: June 13, 2002
    Inventors: Yoshiaki Usami, Masanori Miyoshi, Hiroshi Shojima
  • Patent number: 6075539
    Abstract: A geometric object display method and apparatus and a computer-readable storage medium storing a geometric object display process program, capable of displaying the image of a composite geometric object such that the outline of the object can be grasped by the user at an earlier stage. Composite geometric element data input from an input unit is divided into a plurality of geometric element data sets of each part by a sub-grouping unit of a computing unit. The display sequence of the sub-grouped geometric element data is scheduled by a sequence scheduling unit, and the sequenced geometric element data is output by an output unit such as a display device. The outline of a composite geometric object can be grasped at an earlier stage when only a fraction of geometric element data is displayed.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: June 13, 2000
    Assignee: Hitachi, Ltd
    Inventors: Tomotoshi Ishida, Munetoshi Unuma, Shiro Nonaka, Yoshiaki Usami, Toshiaki Yoshinaga, Yoshiko Tanaka
  • Patent number: 5717848
    Abstract: There are provided apparatuses for generating the motion path of an object. One apparatus includes an input unit for inputting information representative of the position of a start point of the motion of an object, at least one of the magnitude and direction of a velocity at the start point, an end point of the motion of the object, and at least one of the magnitude and direction of a velocity at the end point, and a calculation unit for calculating a motion path from the start point to the end point, in accordance with the information inputted to the input unit. As an alternative of the position and velocity of an object, the rotary angle and angular velocity of an object may be used to represent the facing direction of the object.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: February 10, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Norito Watanabe, Atsushi Kawabata, Tsugio Tomita, Toshio Sakai, Yasuo Sasaki, Yoshiaki Usami, Akihiro Sakamoto, Kengiro Sato
  • Patent number: 5682505
    Abstract: In order to generate an image, modelling data representing image features of the image are stored in a data base, and first characteristics, such as colors, are stored in another data base. An analyzer unit is then able to assign the first characteristics to the image features in an objective way. Subjective properties, e.g. `darker`, `lighter`, are also defined over a range for the image features and a user interface permits a user to select an appropriate value of the subjective property within the range, thereby to generate a second characteristic on the basis of rules relating to the subjective properties stored in a data base. An interpreter unit then modifies the first characteristic on the basis of the second characteristic before the selected image features are rendered into an image by a rendering unit for display by a display unit.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: October 28, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiaki Usami, Joji Nishiyama, Tomoyuki Miyata, Hiroaki Takatsuki, Yoshimi Ota, Masao Yanaka
  • Patent number: 5404426
    Abstract: Hair models of human or, animal hairs are displayed on a display screen using a three-dimensional computer graphics technique. Each human hair model is constructed of a plurality of rod-shaped hair elements. The magnitude and direction of an external force applied to each hair element are designated. A deformation quantity of each hair element is obtained such that the external force having the designated magnitude and direction equilibrates with an internal force generated by the rigidity of each hair element. The shape of each hair model is determined in accordance with obtained deformation quantities, for display of the shape of each hair model. The hair model can be displayed man-machine interactively.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: April 4, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiaki Usami, Kenichi Anjyo, Ryozo Takeuchi
  • Patent number: 5379371
    Abstract: A display apparatus and a modelling method for computer graphics includes a first memory for storing a first three-dimensional model, a detailed model, of a body represented by at least one of desired first number of dimensions, a desired first number of parameters and desired first parametric quantities, an arithmetic unit for arithmetically determining a second three-dimensional model, a simplified model, by varying at least one of the first number of dimensions, the first number of parameters and the first parametric quantities to at least one of a second number of dimensions, a second number of parameters and second parametric quantities in accordance with an algorithm for thereby creating automatically a simplified model for a body of less importance. A second memory stores the simplified model. A selector selects the first three-dimensional model or the second three-dimensional model by reference to a preset index for evaluation.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: January 3, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiaki Usami, Kenichi Anjyo, Yoshimi Oota
  • Patent number: 5267154
    Abstract: A biological image formation aiding system and a biological image forming method are provided in which three-dimensional data corresponding to a standard shape of a biological article, standard motion thereof, and a standard material feeling of an outer surface of the biological article are prepared, and a realistic three-dimensional synthesized image of an entire biological article with individuality can be formed simply.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: November 30, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Ryozo Takeuchi, Masao Yanaka, Kenichi Anjyo, Yoshiaki Usami, Munetoshi Unuma, Akio Yajima, Tsuneya Kurihara, Joji Nishiyama, Tomoyuki Miyata, Hiroaki Takatsuki
  • Patent number: 4994989
    Abstract: A display apparatus and a modelling method for computer graphics includes a first memory for storing a first three-dimensional model, a detailed model, of a body represented by at least one of desired first number of dimensions, a desired first number of parameters and desired first parametric quantities, an arithmetic unit for arithmetically determining a second three-dimensional model, a simplified model, by varying at least one of the first number of dimensions, the first number of parameters and the first parametric quantities to at least one of a second number of dimensions, a second number of parameters and second parametric quantities in accordance with an algorithm for thereby creating automatically a simplified model for a body of less importance. A second memory stores the simplified model. A selector selects the first three-dimensional model or the second three-dimensional model by reference to a preset index for evaluation.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: February 19, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiaki Usami, Kenichi Anjyo, Yoshimi Oota
  • Patent number: 4982438
    Abstract: A three-dimensional shape of an object is recognized by developing enveloping surfaces of the object by a cone-silhouetting method, wherein the object is picked up by a binocular three-dimensional vision method by making use of geometrical restraint conditions derived by the cone-silhouetting method. The binocular parallax is increased to thereby ensure the recognition of the three-dimensional shape with improved accuracy. Local concave portions which can not be recognized by the cone-silhouetting method by itself are recognized with higher accuracy.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: January 1, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiaki Usami, Kenichi Anjyo, Misato Nio, Nobuhiro Hamada, Masao Yanaka