Patents by Inventor Kikuo Utsuno
Kikuo Utsuno 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: 10270284Abstract: A semiconductor chip having four sides and being substantially formed in a rectangle, and including a first terminal which is located along one side of the four sides of the semiconductor chip and which is to be electrically connected to a solar cell outside the semiconductor chip; a second terminal which is located along the one side of the semiconductor chip and which is to be electrically connected to a secondary cell outside the semiconductor chip; and an interconnection line that electrically interconnects the first terminal and the second terminal.Type: GrantFiled: March 27, 2018Date of Patent: April 23, 2019Assignee: LAPIS SEMICONDUCTOR CO., LTD.Inventor: Kikuo Utsuno
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Patent number: 10075014Abstract: A charging control system for charging a secondary battery from a solar battery, including a first path for transmitting power from the solar battery to the secondary battery, a second path for sensing the voltage of the secondary battery, and a comparison unit for comparing the solar battery voltage with the sensed voltage of the secondary battery. The first path includes a first interrupter, controlled by the comparison unit, which interrupts the first path to prevent discharge of the secondary battery through the solar battery when the solar battery voltage falls below the secondary battery voltage. The second path includes a second interrupter that interrupts the second path after the first path is interrupted, to prevent the secondary battery from discharging through the second path when not being charged through the first path.Type: GrantFiled: February 5, 2018Date of Patent: September 11, 2018Assignee: LAPIS Semiconductor Co., Ltd.Inventor: Kikuo Utsuno
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Publication number: 20180212459Abstract: There is provided a semiconductor chip having four sides and being substantially formed in a rectangle, the semiconductor chip including: a first terminal which is located along one side of the four sides of the semiconductor chip and which is to be electrically connected to a solar cell outside the semiconductor chip; a second terminal which is located along the one side of the semiconductor chip and which is to be electrically connected to a secondary cell outside the semiconductor chip; and an interconnection line that electrically interconnects the first terminal and the second terminal.Type: ApplicationFiled: March 27, 2018Publication date: July 26, 2018Inventor: Kikuo UTSUNO
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Patent number: 10020674Abstract: There is provided a semiconductor chip having four sides and being substantially formed in a rectangle, the semiconductor chip including: a first terminal which is located along one side of the four sides of the semiconductor chip and which is to be electrically connected to a solar cell outside the semiconductor chip; a second terminal which is located along the one side of the semiconductor chip and which is to be electrically connected to a secondary cell outside the semiconductor chip; and an interconnection line that electrically interconnects the first terminal and the second terminal.Type: GrantFiled: July 6, 2017Date of Patent: July 10, 2018Assignee: LAPIS SEMICONDUCTOR CO., LTD.Inventor: Kikuo Utsuno
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Publication number: 20180159363Abstract: A charging control system for charging a secondary battery from a solar battery, including a first path for transmitting power from the solar battery to the secondary battery, a second path for sensing the voltage of the secondary battery, and a comparison unit for comparing the solar battery voltage with the sensed voltage of the secondary battery. The first path includes a first interrupter, controlled by the comparison unit, which interrupts the first path to prevent discharge of the secondary battery through the solar battery when the solar battery voltage falls below the secondary battery voltage. The second path includes a second interrupter that interrupts the second path after the first path is interrupted, to prevent the secondary battery from discharging through the second path when not being charged through the first path.Type: ApplicationFiled: February 5, 2018Publication date: June 7, 2018Applicant: LAPIS Semiconductor Co., Ltd.Inventor: Kikuo UTSUNO
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Patent number: 9991739Abstract: There is provided a semiconductor chip having four sides and being substantially formed in a rectangle, the semiconductor chip including: a first terminal which is located along one side of the four sides of the semiconductor chip and which is to be electrically connected to a solar cell outside the semiconductor chip; a second terminal which is located along the one side of the semiconductor chip and which is to be electrically connected to a secondary cell outside the semiconductor chip; and an interconnection line that electrically interconnects the first terminal and the second terminal.Type: GrantFiled: July 6, 2017Date of Patent: June 5, 2018Assignee: LAPIS SEMICONDUCTOR CO., LTD.Inventor: Kikuo Utsuno
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Patent number: 9887578Abstract: A charging control system for charging a secondary battery from a solar battery, including a first path for transmitting power from the solar battery to the secondary battery, a second path for sensing the voltage of the secondary battery, and a comparison unit for comparing the solar battery voltage with the sensed voltage of the secondary battery. The first path includes a first interrupter, controlled by the comparison unit, which interrupts the first path to prevent discharge of the secondary battery through the solar battery when the solar battery voltage falls below the secondary battery voltage. The second path includes a second interrupter that interrupts the second path after the first path is interrupted, to prevent the secondary battery from discharging through the second path when not being charged through the first path.Type: GrantFiled: April 15, 2016Date of Patent: February 6, 2018Assignee: LAPIS SEMICONDUCTOR CO., LTD.Inventor: Kikuo Utsuno
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Publication number: 20170310155Abstract: There is provided a semiconductor chip having four sides and being substantially formed in a rectangle, the semiconductor chip including: a first terminal which is located along one side of the four sides of the semiconductor chip and which is to be electrically connected to a solar cell outside the semiconductor chip; a second terminal which is located along the one side of the semiconductor chip and which is to be electrically connected to a secondary cell outside the semiconductor chip; and an interconnection line that electrically interconnects the first terminal and the second terminal.Type: ApplicationFiled: July 6, 2017Publication date: October 26, 2017Inventor: Kikuo UTSUNO
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Patent number: 9722457Abstract: There is provided a semiconductor chip having four sides and being substantially formed in a rectangle, the semiconductor chip including: a first terminal which is located along one side of the four sides of the semiconductor chip and which is to be electrically connected to a solar cell outside the semiconductor chip; a second terminal which is located along the one side of the semiconductor chip and which is to be electrically connected to a secondary cell outside the semiconductor chip; and an interconnection line that electrically interconnects the first terminal and the second terminal.Type: GrantFiled: November 24, 2015Date of Patent: August 1, 2017Assignee: LAPIS SEMICONDUCTOR CO., LTD.Inventor: Kikuo Utsuno
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Patent number: 9454165Abstract: There is provided a semiconductor device including: a current generation circuit that generates a current; a voltage generation circuit that, using the current generated by the current generation circuit, generates and outputs a predetermined voltage from a reference voltage, with an internal capacitor element that is connected to output of the voltage generation circuit, the internal capacitor element being provided within an integrated circuit on which the device itself is mounted; a storage section that stores a flag indicating a connection state between the output of the voltage generation circuit and an external capacitor element provided externally to the integrated circuit; and a controller that, based on the flag, controls a current amount of the current used by the voltage generation circuit to generate the predetermined voltage.Type: GrantFiled: August 28, 2014Date of Patent: September 27, 2016Assignee: LAPIS SEMICONDUCTOR CO., LTD.Inventor: Kikuo Utsuno
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Publication number: 20160233718Abstract: A charging control system for charging a secondary battery from a solar battery, including a first path for transmitting power from the solar battery to the secondary battery, a second path for sensing the voltage of the secondary battery, and a comparison unit for comparing the solar battery voltage with the sensed voltage of the secondary battery. The first path includes a first interrupter, controlled by the comparison unit, which interrupts the first path to prevent discharge of the secondary battery through the solar battery when the solar battery voltage falls below the secondary battery voltage. The second path includes a second interrupter that interrupts the second path after the first path is interrupted, to prevent the secondary battery from discharging through the second path when not being charged through the first path.Type: ApplicationFiled: April 15, 2016Publication date: August 11, 2016Applicant: LAPIS Semiconductor Co., Ltd.Inventor: Kikuo UTSUNO
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Patent number: 9337687Abstract: A charging control system for charging a secondary battery from a solar battery, including a first path for transmitting power from the solar battery to the secondary battery, a second path for sensing the voltage of the secondary battery, and a comparison unit for comparing the solar battery voltage with the sensed voltage of the secondary battery. The first path includes a first interrupter, controlled by the comparison unit, which interrupts the first path to prevent discharge of the secondary battery through the solar battery when the solar battery voltage falls below the secondary battery voltage. The second path includes a second interrupter that interrupts the second path after the first path is interrupted, to prevent the secondary battery from discharging through the second path when not being charged through the first path.Type: GrantFiled: January 16, 2015Date of Patent: May 10, 2016Assignee: LAPIS SEMICONDUCTOR CO., LTD.Inventor: Kikuo Utsuno
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Publication number: 20160079806Abstract: There is provided a semiconductor chip having four sides and being substantially formed in a rectangle, the semiconductor chip including: a first terminal which is located along one side of the four sides of the semiconductor chip and which is to be electrically connected to a solar cell outside the semiconductor chip; a second terminal which is located along the one side of the semiconductor chip and which is to be electrically connected to a secondary cell outside the semiconductor chip; and an interconnection line that electrically interconnects the first terminal and the second terminal.Type: ApplicationFiled: November 24, 2015Publication date: March 17, 2016Inventor: Kikuo UTSUNO
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Patent number: 9223335Abstract: A semiconductor device includes a reference voltage generation circuit to which a power source voltage is applied; an output terminal for outputting an output voltage; a determining circuit connected to the reference voltage generation circuit and the output terminal for generating the output voltage according to a determination target voltage; and a constant electric current source connected to the determining circuit and a ground potential for generating a constant electrical current.Type: GrantFiled: November 26, 2013Date of Patent: December 29, 2015Assignee: Lapis Semiconductor Co., Ltd.Inventor: Kikuo Utsuno
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Patent number: 9219383Abstract: There is provided a semiconductor chip having four sides and being substantially formed in a rectangle, the semiconductor chip including: a first terminal which is located along one side of the four sides of the semiconductor chip and which is to be electrically connected to a solar cell outside the semiconductor chip; a second terminal which is located along the one side of the semiconductor chip and which is to be electrically connected to a secondary cell outside the semiconductor chip; and an interconnection line that electrically interconnects the first terminal and the second terminal.Type: GrantFiled: February 24, 2014Date of Patent: December 22, 2015Assignee: LAPIS SEMICONDUCTOR CO., LTD.Inventor: Kikuo Utsuno
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Publication number: 20150130399Abstract: A charging control system for charging a secondary battery from a solar battery, including a first path for transmitting power from the solar battery to the secondary battery, a second path for sensing the voltage of the secondary battery, and a comparison unit for comparing the solar battery voltage with the sensed voltage of the secondary battery. The first path includes a first interrupter, controlled by the comparison unit, which interrupts the first path to prevent discharge of the secondary battery through the solar battery when the solar battery voltage falls below the secondary battery voltage. The second path includes a second interrupter that interrupts the second path after the first path is interrupted, to prevent the secondary battery from discharging through the second path when not being charged through the first path.Type: ApplicationFiled: January 16, 2015Publication date: May 14, 2015Applicant: LAPIS Semiconductor Co., Ltd.Inventor: Kikuo UTSUNO
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Publication number: 20150061631Abstract: There is provided a semiconductor device including: a current generation circuit that generates a current; a voltage generation circuit that, using the current generated by the current generation circuit, generates and outputs a predetermined voltage from a reference voltage, with an internal capacitor element that is connected to output of the voltage generation circuit, the internal capacitor element being provided within an integrated circuit on which the device itself is mounted; a storage section that stores a flag indicating a connection state between the output of the voltage generation circuit and an external capacitor element provided externally to the integrated circuit; and a controller that, based on the flag, controls a current amount of the current used by the voltage generation circuit to generate the predetermined voltage.Type: ApplicationFiled: August 28, 2014Publication date: March 5, 2015Inventor: Kikuo UTSUNO
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Patent number: 8963480Abstract: A charging control system for charging a secondary battery from a solar battery, including a first path for transmitting power from the solar battery to the secondary battery, a second path for sensing the voltage of the secondary battery, and a comparison unit for comparing the solar battery voltage with the sensed voltage of the secondary battery. The first path includes a first interrupter, controlled by the comparison unit, which interrupts the first path to prevent discharge of the secondary battery through the solar battery when the solar battery voltage falls below the secondary battery voltage. The second path includes a second interrupter that interrupts the second path after the first path is interrupted, to prevent the secondary battery from discharging through the second path when not being charged through the first path.Type: GrantFiled: May 6, 2014Date of Patent: February 24, 2015Assignee: LAPIS Semiconductor Co., Ltd.Inventor: Kikuo Utsuno
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Patent number: 8912826Abstract: A voltage change detection device, which reduces a deviation of a detection potential and detects a voltage change within a predetermined detection potential even when the threshold voltage of a field effect transistor is deviated. The voltage change detection device includes a first field effect transistor, a second field effect transistor, and a detection signal generator. The first field effect transistor has a drain connected to a power supply potential, a source connected to a first constant current source or a first resistor at a first node, and a gate connected to a fixed voltage. The second field effect transistor has a drain and a gate connected to the power supply potential and a source connected to a second constant current source or a second resistor at a second node. The detection signal generator generates a detection signal indicating that the power supply potential has crossed a predetermined detection potential.Type: GrantFiled: December 16, 2013Date of Patent: December 16, 2014Assignee: LAPIS Semiconductor Co., Ltd.Inventor: Kikuo Utsuno
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Patent number: 8823328Abstract: A charging device can prevent overcharging by coping with a plurality of cell voltages without increasing a circuit area and current consumption. The charging device selects one of at least two judgment voltages in response to a select signal determined depending on a chargeable voltage of a secondary battery. The charging device compares a comparison voltage based on a voltage of a lower stream of a back flow prevention unit with the selected judgment voltage to detect a fully charged state of the secondary battery. The charging device interrupts supply of charging current to the back flow prevention unit upon detecting the fully charged state.Type: GrantFiled: September 6, 2011Date of Patent: September 2, 2014Assignee: Lapis Semiconductor Co., Ltd.Inventor: Kikuo Utsuno