Patents by Inventor Shigekazu Sugimoto
Shigekazu Sugimoto 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: 11458931Abstract: When a power failure does not occur, power supply to a first terminal of a wiper motor is performed by a first battery, and power supply to a second terminal of the wiper motor is performed by a second battery. When a power failure occurs in one of the first battery or the second battery, power supply to the wiper motor is performed by the other battery that is not in power failure.Type: GrantFiled: May 12, 2020Date of Patent: October 4, 2022Assignee: DENSO ELECTRONICS CORPORATIONInventors: Manabu Morita, Shigekazu Sugimoto
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Patent number: 11345314Abstract: When a power failure does not occur, power supply to a first terminal of a wiper motor is performed by a first battery, and power supply to a second terminal of the wiper motor is performed by a second battery. When a power failure occurs in one of the first battery or the second battery, power supply to the wiper motor is performed by the other battery that is not in power failure.Type: GrantFiled: February 18, 2019Date of Patent: May 31, 2022Assignee: DENSO ELECTRONICS CORPORATIONInventors: Manabu Morita, Shigekazu Sugimoto
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Publication number: 20200269814Abstract: When a power failure does not occur, power supply to a first terminal of a wiper motor is performed by a first battery, and power supply to a second terminal of the wiper motor is performed by a second battery. When a power failure occurs in one of the first battery or the second battery, power supply to the wiper motor is performed by the other battery that is not in power failure.Type: ApplicationFiled: May 12, 2020Publication date: August 27, 2020Inventors: Manabu MORITA, Shigekazu SUGIMOTO
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Publication number: 20190256051Abstract: When a power failure does not occur, power supply to a first terminal of a wiper motor is performed by a first battery, and power supply to a second terminal of the wiper motor is performed by a second battery. When a power failure occurs in one of the first battery or the second battery, power supply to the wiper motor is performed by the other battery that is not in power failure.Type: ApplicationFiled: February 18, 2019Publication date: August 22, 2019Inventors: Manabu MORITA, Shigekazu SUGIMOTO
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Patent number: 8653740Abstract: A switch device controls a voltage applied to a load element according to an electric power supply from a power source. A driver circuit controls activation and deactivation of the switch device. A circuit portion sets a duty ratio and output the duty ratio to the driver circuit for causing the driver circuit to activate the switch device according to the duty ratio to control a voltage applied to the load element. The circuit portion sets the duty ratio according to a duty ratio characteristic curve. In the duty ratio characteristic curve, the duty ratio decreases gradually with increase in a voltage of the power source, and decrease in the duty ratio with increase in the voltage of the power source becomes small gradually.Type: GrantFiled: October 27, 2010Date of Patent: February 18, 2014Assignee: Anden Co., Ltd.Inventors: Takeshi Hattori, Shigekazu Sugimoto, Nobutomo Takagi
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Patent number: 8441767Abstract: An overcurrent protection circuit includes a load driver for driving a load, a controller for turning ON and OFF the load driver, a current sensor for measuring a load current flowing through the load, and an add/subtract circuit for performing both an addition operation and a subtraction operation on a previous calculation result or for performing only the subtraction operation on the previous calculation result so as to produce a present calculation result. The addition operation uses an added value depending on the presently measured current. The subtraction operation uses a subtracted value depending on the presently measured current. The controller turns OFF the load driver, when the present calculation result of the add/subtract circuit exceeds a predetermined determination value.Type: GrantFiled: February 24, 2011Date of Patent: May 14, 2013Assignee: Anden Co., Ltd.Inventors: Takeyoshi Hisada, Nobutomo Takagi, Shigekazu Sugimoto, Fukuo Ishikawa
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Patent number: 8315027Abstract: A first overcurrent detecting circuit outputs a first time-up signal when a time period, in which an electric current flowing into the wire harness is greater than the first threshold, reaches a first duration time, which corresponds to a first threshold. A second overcurrent detecting circuit outputs a second time-up signal when a time period, in which an electric current flowing into the wire harness is greater than the second threshold, reaches a second duration time, which corresponds to a second threshold. The second threshold is less than the first threshold. The second duration time is longer than the first duration time. A determination circuit determines that an overcurrent flows into the wire harness and cause a control circuit to deactivate the switching element when inputting at least one of the first and second time-up signals.Type: GrantFiled: October 25, 2010Date of Patent: November 20, 2012Assignee: Anden Co., Ltd.Inventors: Shigekazu Sugimoto, Kazunori Ozawa, Koichi Watanabe
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Publication number: 20110216448Abstract: An overcurrent protection circuit includes a load driver for driving a load, a controller for turning ON and OFF the load driver, a current sensor for measuring a load current flowing through the load, and an add/subtract circuit for performing both an addition operation and a subtraction operation on a previous calculation result or for performing only the subtraction operation on the previous calculation result so as to produce a present calculation result. The addition operation uses an added value depending on the presently measured current. The subtraction operation uses a subtracted value depending on the presently measured current. The controller turns OFF the load driver, when the present calculation result of the add/subtract circuit exceeds a predetermined determination value.Type: ApplicationFiled: February 24, 2011Publication date: September 8, 2011Applicant: ANDEN CO., LTDInventors: Takeyoshi HISADA, Nobutomo Takagi, Shigekazu Sugimoto, Fukuo Ishikawa
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Publication number: 20110110009Abstract: A first overcurrent detecting circuit outputs a first time-up signal when a time period, in which an electric current flowing into the wire harness is greater than the first threshold, reaches a first duration time, which corresponds to a first threshold. A second overcurrent detecting circuit outputs a second time-up signal when a time period, in which an electric current flowing into the wire harness is greater than the second threshold, reaches a second duration time, which corresponds to a second threshold. The second threshold is less than the first threshold. The second duration time is longer than the first duration time. A determination circuit determines that an overcurrent flows into the wire harness and cause a control circuit to deactivate the switching element when inputting at least one of the first and second time-up signals.Type: ApplicationFiled: October 25, 2010Publication date: May 12, 2011Applicant: ANDEN CO., LTD.Inventors: Shigekazu SUGIMOTO, Kazunori Ozawa, Koichi Watanabe
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Publication number: 20110101886Abstract: A switch device controls a voltage applied to a load element according to an electric power supply from a power source. A driver circuit controls activation and deactivation of the switch device. A circuit portion sets a duty ratio and output the duty ratio to the driver circuit for causing the driver circuit to activate the switch device according to the duty ratio to control a voltage applied to the load element. The circuit portion sets the duty ratio according to a duty ratio characteristic curve. In the duty ratio characteristic curve, the duty ratio decreases gradually with increase in a voltage of the power source, and decrease in the duty ratio with increase in the voltage of the power source becomes small gradually.Type: ApplicationFiled: October 27, 2010Publication date: May 5, 2011Applicant: ANDEN CO., LTD.Inventors: Takeshi HATTORI, Shigekazu Sugimoto, Nobutomo Takagi
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Patent number: 7471119Abstract: An electronic circuit device has a current correction circuit that supplies a correction current which is capable of offsetting an increment or a decrement of a consumption current of a signal processor circuit that varies based on a signal level of an input signal. Therefore, even if the consumption current of the signal processor circuit varies based on the signal level of the received input signal, the variation of the consumption current is offset by the current correction circuit. As a result, even if the consumption current varies based on the signal level of the input signal, since a current that flows in a resistor does not vary, a voltage drop can be held constant. Accordingly, it is possible to accurately conduct a comparison determination by a comparator.Type: GrantFiled: May 18, 2007Date of Patent: December 30, 2008Assignees: DENSO CORPORATION, Anden Co., Ltd.Inventors: Takaharu Futamura, Shigekazu Sugimoto
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Publication number: 20080001652Abstract: An electronic circuit device has a current correction circuit that supplies a correction current which is capable of offsetting an increment or a decrement of a consumption current of a signal processor circuit that varies based on a signal level of an input signal. Therefore, even if the consumption current of the signal processor circuit varies based on the signal level of the received input signal, the variation of the consumption current is offset by the current correction circuit. As a result, even if the consumption current varies based on the signal level of the input signal, since a current that flows in a resistor does not vary, a voltage drop can be held constant. Accordingly, it is possible to accurately conduct a comparison determination by a comparator.Type: ApplicationFiled: May 18, 2007Publication date: January 3, 2008Applicants: DENSO CORPORATION, ANDEN CO., LTD.Inventors: Takaharu Futamura, Shigekazu Sugimoto
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Patent number: 7123136Abstract: An indicator system having light emitting diode (LED) indicators and an open-circuit detecting circuit. In the open-circuit detecting circuit, a voltage at a point between a constant current source and the first resistor is applied to a base of a transistor. The second resistor is connected in parallel between the base and an emitter of the transistor. The third and the fourth resistors are connected in series between the constant current source and a collector of the transistor. The fifth resistor is connected between the emitter of the transistor and the first resistor. The threshold determining circuit determines a voltage at a point between the third and the fourth resistors as a threshold voltage. With this configuration, the threshold voltage can be adjusted according to the resistance of the first resistor.Type: GrantFiled: September 30, 2004Date of Patent: October 17, 2006Assignees: Anden Co., Ltd., Denso CorporationInventors: Shigekazu Sugimoto, Yoshichika Abe
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Patent number: 6927683Abstract: A flasher circuit included in a vehicular turn signal indicator system has a flashing control circuit, a flashing relay, a current detecting resistor, and a switching circuit. The control circuit detects a voltage drop across the resistor during driving of light bulb indicator lamps and light emitting diode (LED) indicator lamps of the system. Each LED lamp is configured to output a disconnection signal if at least one of their LEDs is disconnected during the driving. The signal turns on a transistor of a switching circuit, resulting in short across the resistor. As a result, the voltage drop is lowered equal to or under the threshold value, and the control circuit starts the disconnection detection.Type: GrantFiled: November 13, 2003Date of Patent: August 9, 2005Assignees: Anden Co., Ltd., Denso CorporationInventors: Shigekazu Sugimoto, Yoshichika Abe
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Publication number: 20050073428Abstract: An indicator system having light emitting diode (LED) indicators and an open-circuit detecting circuit. In the open-circuit detecting circuit, a voltage at a point between a constant current source and the first resistor is applied to a base of a transistor. The second resistor is connected in parallel between the base and an emitter of the transistor. The third and the fourth resistors are connected in series between the constant current source and a collector of the transistor. The fifth resistor is connected between the emitter of the transistor and the first resistor. The threshold determining circuit determines a voltage at a point between the third and the fourth resistors as a threshold voltage. With this configuration, the threshold voltage can be adjusted according to the resistance of the first resistor.Type: ApplicationFiled: September 30, 2004Publication date: April 7, 2005Inventors: Shigekazu Sugimoto, Yoshichika Abe
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Publication number: 20040095234Abstract: A flasher circuit included in a vehicular turn signal indicator system has a flashing control circuit, a flashing relay, a current detecting resistor, and a switching circuit. The control circuit detects a voltage drop across the resistor during driving of light bulb indicator lamps and light emitting diode (LED) indicator lamps of the system. Each LED lamp is configured to output a disconnection signal if at least one of their LEDs is disconnected during the driving. The signal turns on a transistor of a switching circuit, resulting in short across the resistor. As a result, the voltage drop is lowered equal to or under the threshold value, and the control circuit starts the disconnection detection.Type: ApplicationFiled: November 13, 2003Publication date: May 20, 2004Inventors: Shigekazu Sugimoto, Yoshichika Abe
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Patent number: 6483246Abstract: Left and right turn lamps are used as lamps in a daytime travel of a vehicle. When a first daytime turn-on requirement is satisfied, i.e., when an ignition switch is ON, a left-hand contact of a turn switch is OFF, a right-hand contact thereof is off, and the like, a left front turn lamp and a right front turn lamp are turned on as the lamps in the daytime travel, based on signals outputted from first and second AND logic circuits. When the left-hand contact of the turn switch is turned on in this state, the left front turn lamp flashes, based on a signal outputted from a flasher circuit, whereas the right front turn lamp keeps a turn-on state. On the other hand, when the right-hand contact of the turn switch is turned on, the right front-turn lamp flashes, based on a signal outputted from the flasher circuit, whereas the left front turn lamp keeps a turn-on state.Type: GrantFiled: July 3, 2001Date of Patent: November 19, 2002Assignees: Anden Co., Ltd., Denso CorporationInventors: Shigekazu Sugimoto, Yoshichika Abe, Hiroshi Yagyu
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Publication number: 20020047531Abstract: Left and right turn lamps are used as lamps in a daytime travel of a vehicle. When a first daytime turn-on requirement is satisfied, i.e., when an ignition switch is ON, a left-hand contact of a turn switch is OFF, a right-hand contact thereof is off, and the like, a left front turn lamp and a right front turn lamp are turned on as the lamps in the daytime travel, based on signals outputted from first and second AND logic circuits. When the left-hand contact of the turn switch is turned on in this state, the left front turn lamp flashes, based on a signal outputted from a flasher circuit, whereas the right front turn lamp keeps a turn-on state. On the other hand, when the right-hand contact of the turn switch is turned on, the right front turn lamp flashes, based on a signal outputted from the flasher circuit, whereas the left front turn lamp keeps a turn-on state.Type: ApplicationFiled: July 3, 2001Publication date: April 25, 2002Inventors: Shigekazu Sugimoto, Yoshichika Abe, Hiroshi Yagyu
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Patent number: 5907252Abstract: A driving circuit for the electromagnetic relay provides a coil of the electromagnetic relay with stepped voltage having a first voltage which is slightly larger than a minimum operating voltage which caused the coil to generate magnetic field capable of closing contacts of the electromagnetic relay and a second voltage higher than the first voltage, in response to a triggering signal to trigger the electromagnetic relay. According to this structure, because the first voltage lower than the second voltage is applied to the coil firstly, the contacts are closed by attracting force of the coil risen gently. As a result, the bouncing of the moving contact can be prevented. In addition, the response time required for the closing of the contacts can be prevented to become long.Type: GrantFiled: September 23, 1997Date of Patent: May 25, 1999Assignees: Denso Corporation, Anden Co., Ltd.Inventors: Junji Hayakawa, Yoshichika Abe, Fukuo Ishikawa, Shigekazu Sugimoto