Patents by Inventor Ichiro Nagashima
Ichiro Nagashima 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: 6622576Abstract: A torque sensor is provided with a coil whose inductance changes in accordance with variation in torque acting on an object. The torque is detected on the basis of the inductance of the coil. Specifically, the torque sensor includes a first oscillation circuit for detecting the inductance of the coil and for oscillating a signal having a period corresponding to the detected inductance. The period of the signal generated by the first oscillation circuit is detected by a period detection section. A torque detection section detects the torque on the basis of the period detected by the period detection section.Type: GrantFiled: August 31, 1999Date of Patent: September 23, 2003Assignee: Toyoda Koki Kabushiki KaishaInventors: Jiro Nakano, Ichiro Nagashima, Hisashi Oue, Takatsugu Asano, Takeshi Tsukamoto
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Patent number: 6445151Abstract: In a controller for a motor-driven power steering mechanism, a motor control section outputs to a drive circuit a control signal corresponding to a torque command output from a torque calculation section. A digital signal processor receives the control signal, calculates an average of values of the control signal during a predetermined period of time, and outputs the average to an anomalous-state monitor section. The anomalous-state monitor section counts the number of times the average deviates from an allowable range. When the number of times has reached a predetermined number, the anomalous-state monitor section judges that the controller has come into an anomalous-state, and outputs a control prohibition signal to the motor control section.Type: GrantFiled: March 31, 2000Date of Patent: September 3, 2002Assignee: Toyoda Koki Kabushiki KaishaInventors: Jiro Nakano, Ichiro Nagashima
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Patent number: 5928784Abstract: Proposed is an electret fiber which is an insolubilized polyvinyl alcohol fiber containing 0.05 to 0.5% by weight of tourmaline particles having a particle diameter not exceeding 0.3 .mu.m. The electret fiber is effective for invigoration of human body by promoting blood circulation and also effective for decreasing the BOD value of sewage water by activating the bacteria in the activated sludge. The electret fiber is prepared by spinning a spinning solution of the polyvinyl alcohol containing the tourmaline particles into the form of a fiber which is then subjected to an insolubilization treatment by a heat treatment, formalization with formaldehyde or acetalization with glutaraldehyde.Type: GrantFiled: April 24, 1997Date of Patent: July 27, 1999Assignees: Life Energy Industry Inc., Nitivy Company Limited, Fuji Lace Sangyo Co., Ltd.Inventors: Toshio Sugihara, Siro Nakamura, Marcos Masaki Komiya, Tadayoshi Utsumi, Ichiro Nagashima
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Patent number: 5767461Abstract: An elevator group supervisory control system for selecting the most suitable car among a plurality of elevators, when a hall call is made, to assign to the hall call, comprising: temporary assigning means for temporarily assigning the car by a conventional method such as a fuzzy group supervisory control based on group data representing states of the elevator system at the moment when a new hall call is made; and a neural net for receiving numerical values converted from group data including the result of judgment of the temporary assigning means and outputting an assignment fitness of each elevator. It decides the most suitable elevator from the output pattern of the neural net to assign to the hall call.Type: GrantFiled: December 22, 1995Date of Patent: June 16, 1998Assignee: Fujitec Co., Ltd.Inventors: Masami Nakagawa, Kenji Sasaki, Sandor Markon, Ichiro Nagashima, Takeshi Midoritani, Tomoaki Tanabe, Naoki Ohta
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Patent number: 5664071Abstract: A graphics plotting apparatus has a decision unit for determining whether or not a polygon is smaller than a predetermined size, for example, the size of a pixel on a display screen or the size of a pixel on a texture pattern according to data of the vertexes of the polygon, a divider for dividing the polygon into small polygons if the polygon is not smaller than the predetermined size, and a plotting unit for plotting pixels corresponding to the polygon if the polygon is smaller than the predetermined size. This apparatus is capable of plotting perspective three-dimensional graphics with smooth shading and texture mapping at a high speed in real time.Type: GrantFiled: December 15, 1994Date of Patent: September 2, 1997Assignee: Kabushiki Kaisha ToshibaInventor: Ichiro Nagashima
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Patent number: 5422997Abstract: A texture address generator has a first register for storing an n-th cycle texture address, a second register for storing an increment for the n-th cycle texture address, a third register for storing a constant for updating contents in the second register, an adder for adding the texture address stored in the first register to the increment stored in the second register, for each cycle, and for updating contents of the first register with a result of the addition, for each cycle, and multiplier for multiplying the increment stored in the second register by the constant stored in the third register, for each cycle, and updating contents of the second register with a result of the multiplication, for each cycle.Type: GrantFiled: July 9, 1993Date of Patent: June 6, 1995Assignee: Kabushiki Kaisha ToshibaInventor: Ichiro Nagashima
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Patent number: 5287324Abstract: A multiport DRAM having a DRAM cell array; a sequential access memory (SAM) for inputting data of a specific length to the DRAM cell array and transmitting that data to an external device; a SAM address counter for counting the addresses of the data in the SAM; a serial port connected to the SAM for transmitting the data in the SAM to an external device; a data transfer address counter, the contents of which is cleared by inputting an external reset signal and is counted up by inputting an overflow signal which is output from the SAM address counter; and a data transfer controller for outputting a data transfer status signal which indicates that data transmission is in progress when data of a specific length in the DRAM cell array designated by the input of the overflow signal by the data transfer address counter is transmitted to the SAM.Type: GrantFiled: March 26, 1992Date of Patent: February 15, 1994Assignee: Kabushiki Kaisha ToshibaInventor: Ichiro Nagashima
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Patent number: 5241654Abstract: Coordinate values of control points of a given Bezier curve are stored in a register, the contents of the register are supplied to a determination circuit to determine whether a distance between adjacent control points can further be bisected into two parts. If bisecting processing can be performed, the contents of the register are supplied to a bisection circuit, the Bezier curve is subdivided into two parts to generate new Bezier curves, and control point data of one of the new Bezier curves is applied to a stack memory and that of the other new Bezier curve is sent to the register. The contents of the register are checked by the determination circuit each time the contents of the register are updated.Type: GrantFiled: July 22, 1992Date of Patent: August 31, 1993Assignee: Kabushiki Kaisha ToshibaInventors: Naoyuki Kai, Masahide Ohhashi, Ichiro Nagashima
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Patent number: 4724109Abstract: A process for the production of continuous inorganic fibers is disclosed which comprises causing a spinning dope composed of a water-soluble organic polymer, a water-soluble inorganic salt capable of forming a refractory inorganic oxide, additives, and water and adjusted to a viscosity of 200 to 2000 poises at 20.degree. C. to be dry spun by the use of a spinning nozzle containing a plurality of spinnerets each provided on the spinning dope outlet side of a nozzle plate with a protuberance having a wall thickness of not more than 0.5 mm at the tip thereof and subjecting the spun threads of the spinning dope to a thermal treatment. An apparatus for working the process is also disclosed which is provided with a spinning nozzle having a plurality of spinnerets bored through a nozzle plate and severally through protuberances formed on the spinning dope outlet side of the nozzle plate in such a manner that the walls of the protuberances surrounding the spinnerets have a thickness of not more than 0.Type: GrantFiled: January 2, 1986Date of Patent: February 9, 1988Assignees: Denki Kagaku Kogyo Kabushiki Kaisha, Nitivy Co., Ltd.Inventors: Mitsuo Yamashita, Akihisa Shirasaka, Ichiro Nagashima, Katunosin Isogai