Patents by Inventor Takeshi Etou
Takeshi Etou 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: 11212471Abstract: Solid-state image capturing elements are disclosed. In one example, a solid-state image capturing element includes a noise-cancelling-signal generating circuit connected to a pixel power source. It executes a gain change and a polarity inversion on a first noise cancelling signal to output a second noise cancelling signal. The element also includes a DA converter that outputs a reference signal and converts a current of the second noise cancelling signal into a voltage to superpose the converted voltage on the reference signal; a comparator that receives inputs of the reference signal and a pixel signal and outputs an inversion signal according to the pixel signal and a gain setting; a counter that converts an inversion timing of the comparator into a digital value; and a gain controlling unit that outputs, when changing a gradient of the reference signal and an input capacity to execute a gain control on the comparator.Type: GrantFiled: September 6, 2019Date of Patent: December 28, 2021Assignee: Sony Semiconductor Solutions CorporationInventors: Takashi Moue, Takeshi Etou
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Publication number: 20210185250Abstract: Solid-state image capturing elements are disclosed. In one example, a solid-state image capturing element includes a noise-cancelling-signal generating circuit connected to a pixel power source. It executes a gain change and a polarity inversion on a first noise cancelling signal to output a second noise cancelling signal. The element also includes a DA converter that outputs a reference signal and converts a current of the second noise cancelling signal into a voltage to superpose the converted voltage on the reference signal; a comparator that receives inputs of the reference signal and a pixel signal and outputs an inversion signal according to the pixel signal and a gain setting; a counter that converts an inversion timing of the comparator into a digital value; and a gain controlling unit that outputs, when changing a gradient of the reference signal and an input capacity to execute a gain control on the comparator.Type: ApplicationFiled: September 6, 2019Publication date: June 17, 2021Inventors: Takashi Moue, Takeshi Etou
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Patent number: 8638616Abstract: A nonvolatile storage device includes: a plurality of memory mats each including a plurality of memory cells; a plurality of plate electrodes each provided for every individual one of the memory mats and each used for applying a voltage to the memory cells; a power-supply section configured to apply a voltage to each of the plate electrodes; a switch circuit having a plurality of switches provided between the power-supply section and each of the plate electrodes and between the plate electrodes; and a control section configured to control the switch circuit in order to disconnect the plate electrodes from the power-supply section and to connect the plate electrodes to each other in order to carry out electrical charging and discharging operations among the plate electrodes.Type: GrantFiled: January 19, 2011Date of Patent: January 28, 2014Assignee: Sony CorporationInventors: Hiroshi Yoshihara, Takayuki Arima, Takeshi Etou
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Publication number: 20110235393Abstract: A nonvolatile storage device includes: a plurality of memory mats each including a plurality of memory cells; a plurality of plate electrodes each provided for every individual one of the memory mats and each used for applying a voltage to the memory cells; a power-supply section configured to apply a voltage to each of the plate electrodes; a switch circuit having a plurality of switches provided between the power-supply section and each of the plate electrodes and between the plate electrodes; and a control section configured to control the switch circuit in order to disconnect the plate electrodes from the power-supply section and to connect the plate electrodes to each other in order to carry out electrical charging and discharging operations among the plate electrodes.Type: ApplicationFiled: January 19, 2011Publication date: September 29, 2011Applicant: Sony CorporationInventors: Hiroshi Yoshihara, Takayuki Arima, Takeshi Etou
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Patent number: 7493890Abstract: A determination is made as to whether or not knocking is actually occurring inside a combustion chamber (5), and on the basis of the knocking detection result, a knocking-correlated parameter (octane number, alcohol concentration, compression ratio of the engine), which is a parameter having a correlation with knocking, is estimated. A knocking occurrence timing in the combustion chamber (5) is then predicted on the basis of the estimated knocking-correlated parameter. A knocking limit ignition timing, which is the ignition timing furthest toward the advanced side at which knocking does not occur, is calculated on the basis of the predicted knocking occurrence timing, and an ignition device (11) is controlled to perform spark ignition at the knocking limit ignition timing.Type: GrantFiled: June 28, 2007Date of Patent: February 24, 2009Assignee: Nissan Motor Co., Ltd.Inventors: Takeshi Etou, Hatsuo Nagaishi
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Publication number: 20070255487Abstract: A determination is made as to whether or not knocking is actually occurring inside a combustion chamber (5), and on the basis of the knocking detection result, a knocking-correlated parameter (octane number, alcohol concentration, compression ratio of the engine), which is a parameter having a correlation with knocking, is estimated. A knocking occurrence timing in the combustion chamber (5) is then predicted on the basis of the estimated knocking-correlated parameter. A knocking limit ignition timing, which is the ignition timing furthest toward the advanced side at which knocking does not occur, is calculated on the basis of the predicted knocking occurrence timing, and an ignition device (11) is controlled to perform spark ignition at the knocking limit ignition timing.Type: ApplicationFiled: June 28, 2007Publication date: November 1, 2007Inventors: Takeshi Etou, Hatsuo Nagaishi
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Patent number: 7255089Abstract: A determination is made as to whether or not knocking is actually occurring inside a combustion chamber (5), and on the basis of the knocking detection result, a knocking-correlated parameter (octane number, alcohol concentration, compression ratio of the engine), which is a parameter having a correlation with knocking, is estimated. A knocking occurrence timing in the combustion chamber (5) is then predicted on the basis of the estimated knocking-correlated parameter. A knocking limit ignition timing, which is the ignition timing furthest toward the advanced side at which knocking does not occur, is calculated on the basis of the predicted knocking occurrence timing, and an ignition device (11) is controlled to perform spark ignition at the knocking limit ignition timing.Type: GrantFiled: May 26, 2005Date of Patent: August 14, 2007Assignee: Nissan Motor Co., Ltd.Inventors: Takeshi Etou, Hatsuo Nagaishi
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Patent number: 7055474Abstract: When controlled variable in a variable valve event and lift mechanism is made to be a predetermined value, requested closing timing at which a target air amount can be obtained and requested opening timing at which a target residual gas rate can be obtained are calculated, and the controlled variable is changed in stepwise until an absolute value of a deviation between a requested operating angle at the requested closing timing and the requested opening timing, and an operating angle corresponding to the controlled variable, reaches a predetermined value or less, so that the controlled variable of the time when the absolute value of the deviation reaches the predetermined value or less is set to a desired value.Type: GrantFiled: December 3, 2003Date of Patent: June 6, 2006Assignees: Hitachi, Ltd., Nissan Motor Co., Ltd.Inventors: Kenichi Machida, Takeshi Etou
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Publication number: 20050268886Abstract: A determination is made as to whether or not knocking is actually occurring inside a combustion chamber (5), and on the basis of the knocking detection result, a knocking-correlated parameter (octane number, alcohol concentration, compression ratio of the engine), which is a parameter having a correlation with knocking, is estimated. A knocking occurrence timing in the combustion chamber (5) is then predicted on the basis of the estimated knocking-correlated parameter. A knocking limit ignition timing, which is the ignition timing furthest toward the advanced side at which knocking does not occur, is calculated on the basis of the predicted knocking occurrence timing, and an ignition device (11) is controlled to perform spark ignition at the knocking limit ignition timing.Type: ApplicationFiled: May 26, 2005Publication date: December 8, 2005Inventors: Takeshi Etou, Hatsuo Nagaishi
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Patent number: 6877493Abstract: In variable operation intake valve controlling apparatus and method for an internal combustion engine, using both of a cam operational angle variable mechanism and a cam phase variable mechanism, a controller controls an intake air quantity in accordance with valve timings of the intake valve determined according to the operational angle through the cam operational angle variable mechanism and the phase through the cam phase variable mechanism, the controller determining an allowable residual gas quantity from a required air quantity and an engine speed, the required air quantity being determined according to a manipulated variable of an accelerator, calculating optimum intake valve open and closure timings (IVO and IVC) in such a manner that both of the required air quantity and the allowable residual gas quantity enter a cylinder of the engine, and determining the operational angle and the phase from the optimum intake valve open and closure timings.Type: GrantFiled: July 1, 2003Date of Patent: April 12, 2005Assignee: Nissan Motor Co., Ltd.Inventors: Katsuhiko Kawamura, Takeshi Etou
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Patent number: 6851411Abstract: A controller (31) of a knocking index value calculation device in a spark ignition engine (1) determines operating conditions of the engine (1), estimates an in-cylinder pressure at a reference crank angle, which is set at a predetermined crank position after compression top dead center, using these operating conditions, estimates a temperature of unburned gas in the cylinder at the reference crank angle using these operating conditions, and calculates a knocking index value using the in-cylinder pressure and unburned gas temperature.Type: GrantFiled: January 14, 2004Date of Patent: February 8, 2005Assignee: Nissan Motor Co., Ltd.Inventors: Hatsuo Nagaishi, Takashi Nakazawa, Takeshi Etou, Takahisa Koseki
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Publication number: 20040159309Abstract: A controller (31) of a knocking index value calculation device in a spark ignition engine (1) determines operating conditions of the engine (1), estimates an in-cylinder pressure at a reference crank angle, which is set at a predetermined crank position after compression top dead center, using these operating conditions, estimates a temperature of unburned gas in the cylinder at the reference crank angle using these operating conditions, and calculates a knocking index value using the in-cylinder pressure and unburned gas temperature.Type: ApplicationFiled: January 14, 2004Publication date: August 19, 2004Applicant: NISSAN MOTOR CO., LTD.Inventors: Hatsuo Nagaishi, Takashi Nakazawa, Takeshi Etou, Takahisa Koseki
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Publication number: 20040107929Abstract: When controlled variable in a variable valve event and lift mechanism is made to be a predetermined value, requested closing timing at which a target air amount can be obtained and requested opening timing at which a target residual gas rate can be obtained are calculated, and the controlled variable is changed in stepwise until an absolute value of a deviation between a requested operating angle at the requested closing timing and the requested opening timing, and an operating angle corresponding to the controlled variable, reaches a predetermined value or less, so that the controlled variable of the time when the absolute value of the deviation reaches the predetermined value or less is set to a desired value.Type: ApplicationFiled: December 3, 2003Publication date: June 10, 2004Applicants: HITACHI UNISIA AUTOMOTIVE, LTD., NISSAN MOTOR CO., LTD.Inventors: Kenichi Machida, Takeshi Etou
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Publication number: 20040031457Abstract: In variable operation intake valve controlling apparatus and method for an internal combustion engine, using both of a cam operational angle variable mechanism and a cam phase variable mechanism, a controller controls an intake air quantity in accordance with valve timings of the intake valve determined according to the operational angle through the cam operational angle variable mechanism and the phase through the cam phase variable mechanism, the controller determining an allowable residual gas quantity from a required air quantity and an engine speed, the required air quantity being determined according to a manipulated variable of an accelerator, calculating optimum intake valve open and closure timings (IVO and IVC) in such a manner that both of the required air quantity and the allowable residual gas quantity enter a cylinder of the engine, and determining the operational angle and the phase from the optimum intake valve open and closure timings.Type: ApplicationFiled: July 1, 2003Publication date: February 19, 2004Applicant: NISSAN MOTOR CO., LTD.Inventors: Katsuhiko Kawamura, Takeshi Etou