Patents by Inventor Masahide Sakamoto
Masahide Sakamoto 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: 9146593Abstract: A touch panel is provided, that can prevent, for example, the occurrence of Newton's rings. The touch panel includes: a first substrate having a first principal plane and a second principal plane on which a first transparent conductive film is formed; and a second substrate having a third principal plane on which a second transparent conductive film is formed and a fourth principal plane. The touch panel is configured such that the first substrate and the second substrate are disposed so that the first transparent conductive film and the second transparent conductive film are opposed to each other. The first substrate is warped to be convex from the second principal plane toward the first principal plane.Type: GrantFiled: November 13, 2013Date of Patent: September 29, 2015Assignee: SMK CorporationInventors: Masahide Sakamoto, Ryuhei Miyabayashi, Ryo Okamura
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Publication number: 20140354904Abstract: A touch panel is provided, that can prevent, for example, the occurrence of Newton's rings. The touch panel includes: a first substrate having a first principal plane and a second principal plane on which a first transparent conductive film is formed; and a second substrate having a third principal plane on which a second transparent conductive film is formed and a fourth principal plane. The touch panel is configured such that the first substrate and the second substrate are disposed so that the first transparent conductive film and the second transparent conductive film are opposed to each other. The first substrate is warped to be convex from the second principal plane toward the first principal plane.Type: ApplicationFiled: November 13, 2013Publication date: December 4, 2014Applicant: SMK CORPORATIONInventors: Masahide SAKAMOTO, Ryuhei MIYABAYASHI, Ryo OKAMURA
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Patent number: 6597282Abstract: An inexpensive spread spectrum transmission system prevents the infiltration of external noise and external leakage of spread spectrum signals by separating electrical power for load devices from electrical power for communication. A plug socket for terminal connection receives a plug for terminal connection of a spread spectrum communication terminal apparatus. The plug for terminal connection is connected to the alternating current power supply line through a blocking filter which blocks electrical noise from entering the spread spectrum terminal apparatus, and prevent spread spectrum signals from passing in the reverse direction. Since the alternating current power supply line for communications carries only light loads, an inexpensive, low-capacity blocking filter is adequate as the blocking filter.Type: GrantFiled: March 22, 2001Date of Patent: July 22, 2003Assignee: SMK CorporationInventors: Hajime Takata, Tooru Takakura, Masahide Sakamoto
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Publication number: 20010050944Abstract: An inexpensive spread spectrum transmission system prevents the infiltration of external noise and external leakage of spread spectrum signals by separating electrical power for load devices from electrical power for communication. A plug socket for terminal connection receives a plug for terminal connection of a spread spectrum communication terminal apparatus. The plug for terminal connection is connected to the alternating current power supply line through a blocking filter which blocks electrical noise from entering the spread spectrum terminal apparatus, and prevent spread spectrum signals from passing in the reverse direction. Since the alternating current power supply line for communications carries only light loads, an inexpensive, low-capacity blocking filter is adequate as the blocking filter.Type: ApplicationFiled: March 22, 2001Publication date: December 13, 2001Inventors: Hajime Takata, Tooru Takakura, Masahide Sakamoto
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Patent number: 5816976Abstract: Disclosed is a driving torque control device for a vehicle comprising the elements. The device can effectively suppress fluctuation of engine torque. (1) Means for calculating a torque control timing to determine and output at least two control timings of an engine torque generated by an engine during speed shifting. (2) Means for calculating and outputting an engine torque control quantity in response to the output from said torque control timing calculating means to calculate and output the engine torque control quantity (3) Means for controlling the engine torque during speed shifting in response to the outputs from said engine torque control quantity calculating means.The engine torque is reduced by a certain quantity at a first timing of said engine torque control timings, followed by increasing the engine torque at the second engine torque control timing, and then returning the engine torque to the engine torque of the time immediately before the first engine torque control timing.Type: GrantFiled: December 7, 1995Date of Patent: October 6, 1998Assignee: Hitachi, Ltd.Inventors: Hiroshi Kuroiwa, Seiji Suda, Masami Shida, Masahide Sakamoto
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Patent number: 5467277Abstract: The present specification discloses a control system for an automobile. An automobile control system according to the present invention is provided in an automobile and includes control devices for controlling the automobile in accordance with data on a control characteristic, and a rewritable storage device for storing a plurality of pieces of data on the control characteristics of the control devices and different drivers in corresponding relationship. In response to an input from any particular driver, data on control characteristic corresponding to the particular driver is read from the storage when the particular driver who has input data is the one stored in the storage, and the data is delivered to the control devices. The data on the control characteristic in the storage which the particular driver specifics can be corrected arbitrarily in accordance with a correcting input.Type: GrantFiled: August 27, 1992Date of Patent: November 14, 1995Assignee: Hitachi, Ltd.Inventors: Masaaki Fujisawa, Taiji Hasegawa, Toshio Ishii, Shoji Sasaki, Masahide Sakamoto
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Patent number: 5256959Abstract: A control system for controlling the full current of a generator for a vehicle having an internal combustion engine operates to control the field current so as to change the output power of the generator. A storage unit is charged by the generator; a field current control unit for controlling the field current of the generator detects the output generated by the storage unit; and an engine control unit to which operation parameters of the internal combustion engine are applied controls at least one of a fuel supply and an ignition timing for the internal combustion engine. The engine control unit further operates to determine a kind of change of load being applied to the internal combustion engine when the load has changed and to control the field current of the generator in accordance with a predetermined control pattern corresponding to the kind of change of the load.Type: GrantFiled: March 15, 1991Date of Patent: October 26, 1993Assignee: Hitachi, Ltd.Inventors: Masami Nagano, Takeshi Atago, Masahide Sakamoto, Yuichi Mori
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Patent number: 5226393Abstract: An altitude decision system and engine operating parameter control system using the same for accurately detecting and correcting for altitude uses three signals, viz, the signal from an engine revolution number sensor, the signal from a throttle sensor for detecting the angle of opening of a throttle valve, and a fundamental fuel injection pulse width signal which is computed by engine operational parameter-computer from inputted signals from a mass air flow sensor and the revolution number detection sensor. Having accurately derived the altitude, the fuel injection pulse rate, the intake air flow and the ignition timing are corrected.Type: GrantFiled: February 25, 1992Date of Patent: July 13, 1993Assignee: Hitachi, Ltd.Inventors: Masami Nagano, Takeshi Atago, Masahide Sakamoto
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Patent number: 5148791Abstract: A method of an electronic engine control for an internal combustion engine having a plurality of cylinders, wherein the very same air fuel ratio feed back coefficient obtained at a predetermined sequential timing which has been used for calculating the amount of fuel to be injected to a specific cylinder is also used for correcting timing of ignition for the same cylinder which follows immediately after the calculated amount of fuel has been injected into the specific cylinder, thereby the engine torque fluctuation is effectively suppressed, stability of engine operation during idling operation is improved and the surge during a low speed running is prevented.Type: GrantFiled: September 19, 1991Date of Patent: September 22, 1992Assignee: Hitachi, Ltd.Inventors: Masami Nagano, Masahide Sakamoto
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Patent number: 5109815Abstract: A method of reducing vibrations of a car body comprises a step of detection of rough which is irregular combustion in an engine, preferably through monitoring of angular velocity of a crankshaft of the engine, and a step of exerting such external force as will cancel roll vibrations of the engine caused by the rough on an engine block of the engine temporarily after the occurrence of the rough. A magnitude of the force and timing of exerting the force is preferably determined on the basis of a degree of the rough and the angular velocity immediately before the occurrence of the rough.Type: GrantFiled: January 28, 1991Date of Patent: May 5, 1992Assignees: Hitachi, Ltd., Nissan Motor Co., Ltd.Inventors: Yuuji Maeda, Yozo Nakamura, Kenichi Nakamura, Masahide Sakamoto, Yuzo Kadomukai, Masao Fukushima, Kei Murakami
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Patent number: 5091856Abstract: A control apparatus for an automobile is provided with a system manager, which initiates and manages the operation of units for controlling and operating various devices and accessories installed in the automobile. The system manager is coupled with a card unit, in which a card is inserted. Such a card has an identification code ID of a user and a code indicating that the card is registered in advance. The system manager has a list of codes of cards registered. If a card inserted is confirmed to be correct and valid by the ID and the registration code, the system manager executes a predetermined processing operation and produces a set-up instruction signal. Upon receipt of this set-up instruction signal, operations of the control units for the devices and accessories are initiated.Type: GrantFiled: April 11, 1990Date of Patent: February 25, 1992Assignee: Hitachi, Ltd.Inventors: Taiji Hasegawa, Masaaki Fujisawa, Masahide Sakamoto, Toshio Ishii, Hideharu Takahashi
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Patent number: 4991102Abstract: An engine control system is disclosed in which the air-fuel ratio is controlled by feedback in accordance with the oxygen concentration detected of the exhaust gas, and a feedback control system thereof separate learning compensation values for compensating for the changes of the input/output characteristics of an air flow meter and a fuel injector respectively.Type: GrantFiled: July 6, 1988Date of Patent: February 5, 1991Assignee: Hitachi, Ltd.Inventors: Masahide Sakamoto, Takeshi Atago, Junichi Ishii, Matsuo Amano, Nobuo Kurihara
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Patent number: 4896641Abstract: A detection processing of a rotational number of an engine is executed periodically in synchronism with a rotation of the engine. A calculation processing of an ignition timing correction amount (.DELTA.IGN) is executed periodically in every predetermined time independently on the rotational number detection of the engine. After the engine is accelerated, the ignition timing control of the engine is executed based on the ignition timing correction amount.Type: GrantFiled: June 16, 1988Date of Patent: January 30, 1990Assignee: Hitachi, Ltd.Inventors: Masami Nagano, Takeshi Atago, Junji Miyake, Masahide Sakamoto
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Patent number: 4862855Abstract: Values of a correction amount of correcting a fundamental control amount of an internal combustion engine are stored in a rewritable memory having divisional storage areas corresponding to divisional running areas. When a value of the correction amount for a particular divisional running area is renewed, concurrently therewith, values of the correction amount for divisional running areas adjacent to the particular divisional running area are also renewed.Type: GrantFiled: March 2, 1988Date of Patent: September 5, 1989Assignee: Hitachi, Ltd.Inventors: Toshio Manaka, Akira Teragakiuchi, Masahide Sakamoto, Masami Nagano, Masakatsu Fujishita, Junji Miyake
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Patent number: 4837698Abstract: A novel method of controlling air-fuel ratio for an internal combustion engine is disclosed, which comprises a memory area for holding regional compensation factors used for air-fuel ratio control, a memory area for holding new regional compensation factors obtained by learning, and a memory area for holding regional compensation factors based on the result of the learning immediately before the latest learning, thus rationalizing the new setting and updating proceses of regional compensation factors according to the result of learning.Type: GrantFiled: October 26, 1987Date of Patent: June 6, 1989Assignee: Hitachi, Ltd.Inventors: Matsuo Amano, Masami Shida, Masahide Sakamoto, Takeshi Hirayama, Takao Sasayama
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Patent number: 4799380Abstract: An engine rotation speed detecting apparatus comprises circuitry for sensing the state of operation of an engine, circuitry for setting a plurality of respectively different masking periods of time, circuitry for detecting an ignition signal lasting for a period of time longer than any one of the plural masking periods of time thereby detecting an ignition period defined between adjacent ignition signals, and circuitry for computing the rotation speed of the engine on the basis of the detected ignition period, one of the plural masking periods of time being selected according to the result of sensing by the operation state sensing circuitry.Type: GrantFiled: January 19, 1988Date of Patent: January 24, 1989Assignees: Hitachi, Ltd., Hitachi Automotibe EngineeringInventors: Toru Suzuki, Masahide Sakamoto, Akihito Watanabe
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Patent number: 4759327Abstract: In an apparatus for controlling an internal combustion engine having a fuel injection control system, the detected number of revolutions is so modified that it becomes higher than an actual number of revolutions when a changing rate of the number of revolutions is larger than a predetermined value and the actual number of revolutions tends upward, and lower than the actual one when the changing rate is larger than the predetermined value and the actual number of revolutions tends downward. The quantity of fuel to be injected is calculated on the basis of the thus modified number of revolutions. According to the present invention, the deceleration shock or surging occurring during the low speed running of an automobile can be effectively diminished without any deterioration of the exhaust gas.Type: GrantFiled: September 8, 1986Date of Patent: July 26, 1988Assignee: Hitachi, Ltd.Inventors: Masami Nagano, Seiji Suda, Takeshi Atago, Masahide Sakamoto
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Patent number: 4742807Abstract: An electronic control device for an internal combustion engine provides feedback control of the idle speed using as a reference value an intake air flow rate set in correspondence with the reference value of the idle speed.Type: GrantFiled: August 5, 1986Date of Patent: May 10, 1988Assignee: Hitachi, Ltd.Inventors: Masahide Sakamoto, Seiji Suda, Takeshi Atago, Masami Nagano
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Patent number: 4723524Abstract: In a fuel injection controlling method for an internal combustion engine having the hot were air flow meter and the valve opening pulse generating means for a fuel increment independently of the basic valve opening pulse generating means for causing the injector to inject fuel normally during the normal condition, the valve opening pulse for a fuel increment has a duration dependent on at least one of selected from variations in the air intake volume per unit time, a closing signal of the idle switch for the throttle valve, a signal indicating the number of revolutions of the engine, etc., independently of the duration of the basic valve opening pulse. The acceleration adjustment is adjusted the fuel increment in accordance with the valve opening pulse for a fuel increment. It is possible to obtain optimum acceleration by varying the adjustment depending on conditions for interrupt adjustment during acceleration.Type: GrantFiled: November 17, 1986Date of Patent: February 9, 1988Assignee: Hitachi, Ltd.Inventors: Takeshi Atago, Masami Nagano, Masahide Sakamoto
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Patent number: 4708108Abstract: A method of controlling the idle speed of an internal combustion engine is disclosed, in which the rotations of the internal combustion engine is detected by a crank angle sensor, the flow rate of air supplied to the engine is detected by an air flow sensor, the amount of fuel supplied to the engine is controlled by a fuel supply unit, an idle condition of the engine is detected by another sensor, and an abnormal condition with the engine speed exceeding a predetermined level in idle state is detected by an electronic control unit by use of electrical signals from the sensors. The number of times fuel is supplied to the engine is counted, and the fuel supply is suspended each time the count of the counter reaches a predetermined value.Type: GrantFiled: October 20, 1986Date of Patent: November 24, 1987Assignee: Hitachi, Ltd.Inventors: Masahide Sakamoto, Masami Shida