Patents by Inventor Shouichi Sato
Shouichi Sato 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: 8468187Abstract: A digital filter device capable of removing the effect of noise such as chattering from a zero crossing signal is provided. A digital filter device 4 filtering a binary digital signal DIN and outputting a binary digital signal DOUT is provided with a toggle flip-flop 12 which switches a signal level of the digital signal DOUT each time a trigger signal is input; an XOR circuit 13 which outputs a first enable signal EN1 while a signal level of the digital signal DIN does not match with the signal level of the output digital signal DOUT; and a charge counter 14 which counts in synchronization with a clock signal CLK while the first enable signal EN1 is input and resets the count to an initial value and outputs a carry on signal ON_RCO as the trigger signal to the toggle flip-flop 12 when the count has reached an upper limit value.Type: GrantFiled: June 14, 2007Date of Patent: June 18, 2013Assignee: Toshiba Kikai Kabushiki KaishaInventors: Narutoshi Yokokawa, Shouichi Sato
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Patent number: 8408254Abstract: The invention comprises a hydrogen source, a detachable connecting port to which a hydrogen storage container is connected in order to store hydrogen supplied from the hydrogen source, a container cooling unit (an air blower) for cooling a hydrogen storage container connected to the connecting port, a container connection recognition unit (a limit switch, a controller) for recognizing connection of a hydrogen storage container to the connecting port, and a fill-up detection unit (a pressure transmitter, a hydrogen remaining sensor, a controller) for detecting that the hydrogen storage container connected to the connecting port is filled up with hydrogen. Consequently, it contributes to simple and safe hydrogen filling in the general public.Type: GrantFiled: January 30, 2008Date of Patent: April 2, 2013Assignee: The Japan Steel Works, Ltd.Inventors: Koichi Shibukawa, Yukio Sato, Yoshinori Kawaharazaki, Yasuhiro Fujita, Shouichi Sato
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Patent number: 8401817Abstract: A velocity detection device includes a rotational direction discriminator calculating an x coordinate or a y coordinate in temporary coordinates on a line between an origin of the coordinates and a point obtained by rotating the actual second coordinates by as much as a rotational angle ? in a direction of a coordinate axis, the rotational direction discriminator discriminating a rotational direction from the actual first coordinates to the actual second coordinates based on either a sign of the x or y coordinate in the temporary coordinates; and a processor calculating calculational second coordinates represented by a multiplication, addition or subtraction between the actual first coordinates and one of the trigonometric function values to make calculational second coordinates closer to the actual second coordinates, and calculating the velocity of the moving body based on the temporary angles corresponding to the trigonometric function value used for the calculational second coordinates.Type: GrantFiled: May 11, 2009Date of Patent: March 19, 2013Assignee: Toshiba Kikai Kabushi KaishaInventor: Shouichi Sato
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Patent number: 8271221Abstract: Provided is a phase detection device which can detect a phase by using a simple configuration.Type: GrantFiled: March 26, 2008Date of Patent: September 18, 2012Assignee: Toshiba Kikai Kabushiki KaishaInventor: Shouichi Sato
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Patent number: 8019037Abstract: A phase difference detection device able to detect a phase with a high precision is provided.Type: GrantFiled: February 8, 2008Date of Patent: September 13, 2011Assignee: Toshiba Kikai Kabushiki KaishaInventor: Shouichi Sato
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Publication number: 20110040522Abstract: A velocity detection device includes a rotational direction discriminator calculating an x coordinate or a y coordinate in temporary coordinates on a line between an origin of the coordinates and a point obtained by rotating the actual second coordinates by as much as a rotational angle a in a direction of a coordinate axis, the rotational direction discriminator discriminating a rotational direction from the actual first coordinates to the actual second coordinates based on either a sign of the x or y coordinate in the temporary coordinates; and a processor calculating calculational second coordinates represented by a multiplication, addition or subtraction between the actual first coordinates and one of the trigonometric function values to make calculational second coordinates closer to the actual second coordinates, and calculating the velocity of the moving body based on the temporary angles corresponding to the trigonometric function value used for the calculational second coordinates.Type: ApplicationFiled: May 11, 2009Publication date: February 17, 2011Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventor: Shouichi Sato
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Publication number: 20100088053Abstract: Provided is a phase detection device which can detect a phase by using a simple configuration.Type: ApplicationFiled: March 26, 2008Publication date: April 8, 2010Applicant: Toshiba Kikai Kabushiki KAishaInventor: Shouichi Sato
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Publication number: 20100012219Abstract: The invention comprises a hydrogen source, a detachable connecting port to which a hydrogen storage container is connected in order to store hydrogen supplied from the hydrogen source, a container cooling unit (an air blower) for cooling a hydrogen storage container connected to the connecting port, a container connection recognition unit (a limit switch, a controller) for recognizing connection of a hydrogen storage container to the connecting port, and a fill-up detection unit (a pressure transmitter, a hydrogen remaining sensor, a controller) for detecting that the hydrogen storage container connected to the connecting port is filled up with hydrogen. Consequently, it contributes to simple and safe hydrogen filling in the general public.Type: ApplicationFiled: January 30, 2008Publication date: January 21, 2010Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Koichi Shibukawa, Yukio Sato, Yoshinori Kawaharazaki, Yasuhiro Fujita, Shouichi Sato
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Publication number: 20090313313Abstract: A digital filter device capable of removing the effect of noise such as chattering from a zero crossing signal is provided. A digital filter device 4 filtering a binary digital signal DIN and outputting a binary digital signal DOUT is provided with a toggle flip-flop 12 which switches a signal level of the digital signal DOUT each time a trigger signal is input; an XOR circuit 13 which outputs a first enable signal EN1 while a signal level of the digital signal DIN does not match with the signal level of the output digital signal DOUT; and a charge counter 14 which counts in synchronization with a clock signal CLK while the first enable signal EN1 is input and resets the count to an initial value and outputs a carry on signal ON_RCO as the trigger signal to the toggle flip-flop 12 when the count has reached an upper limit value.Type: ApplicationFiled: June 14, 2007Publication date: December 17, 2009Applicant: Toshiba Kikai Kabushiki KaishaInventors: Narutoshi Yokokawa, Shouichi Sato
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Publication number: 20090290669Abstract: A phase difference detection device able to detect a phase with a high precision is provided.Type: ApplicationFiled: February 8, 2008Publication date: November 26, 2009Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventor: Shouichi Sato
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Patent number: 5915213Abstract: Simple and low-cost linearizing circuit for compensating for amplitude and phase distortion produced in a power amplification stage of a radio transmitter apparatus that is required to have a high linearity. Amplitude distortion compensation means, disposed in an intermediate frequency amplifier, has a field-effect transistor whose gate bias voltage is set near to its pinchoff voltage and compensates for amplitude distortion produced in a radio frequency amplifier. On the other hand, phase distortion compensation means having a varactor diode and a branch-line hybrid is disposed in the radio frequency amplifier so as to compensate for phase distortion produced in the radio frequency amplifier. The phase distortion compensation means can be disposed in a local frequency oscillation circuit, alternatively.Type: GrantFiled: October 30, 1996Date of Patent: June 22, 1999Assignee: Fujitsu LimitedInventors: Masanori Iwatsuki, Shouichi Sato, Kouichi Hayasaka, Yasuhiro Shibuya
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Patent number: 5151676Abstract: A microwave film resistance terminator that includes a film resistor having the sufficient terminating characteristics even at high microwave frequencies. The invention uses a structure including a second film resistor (40) for cancelling inductive reactance element of the conventional first film resistor (30) is; and moreover, the inductive reactance of the film resistors (30, 31, 32) can be lowered by dividing the first film resistor (30) into a plurality of sections.Type: GrantFiled: October 2, 1990Date of Patent: September 29, 1992Assignee: Fujitsu LimitedInventor: Shouichi Sato