Patents by Inventor Tomonobu Kurihara
Tomonobu Kurihara 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: 10008919Abstract: A method of controlling a power supply to a semiconductor device including a first region having a high-side drive circuit, a second region having a signal processing circuit, a low-side drive circuit and a voltage control circuit, and a separation region formed between the first and second regions and having a rectifying element, includes turning on a first control signal to the voltage control circuit, turning off the first control signal to the voltage control circuit, and repeating the turning on of the first control signal and the turning off the first control signal.Type: GrantFiled: February 12, 2016Date of Patent: June 26, 2018Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Yoshinori Kaya, Yasushi Nakahara, Azuma Araya, Ryo Kanda, Tomonobu Kurihara, Tetsu Toda
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Patent number: 9866207Abstract: A driver integrated circuit includes a bootstrap circuit (BSC) configured to output a boot power supply voltage (VB) based on a first power supply voltage, the boot power supply voltage being higher than the first power supply voltage; a level shift circuit (LSC) configured to output an output pulse signal based on an input pulse signal and the boot power supply voltage; a high side driving circuit (HSU) configured to output a high side driving voltage based on the boot power supply voltage and the output pulse signal, wherein the bootstrap circuit includes a sense metal oxide semiconductor (MOS) transistor and a boot MOS transistor, wherein the sense MOS transistor includes a depression-type transistor.Type: GrantFiled: December 21, 2016Date of Patent: January 9, 2018Assignee: Renesas Electronics CorporationInventors: Ryo Kanda, Tetsu Toda, Junichi Nakamura, Kazuyuki Umezu, Tomonobu Kurihara, Takahiro Nagatsu, Yasushi Nakahara, Yoshinori Kaya
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Publication number: 20170104474Abstract: A driver integrated circuit includes a bootstrap circuit (BSC) configured to output a boot power supply voltage (VB) based on a first power supply voltage, the boot power supply voltage being higher than the first power supply voltage; a level shift circuit (LSC) configured to output an output pulse signal based on an input pulse signal and the boot power supply voltage; a high side driving circuit (HSU) configured to output a high side driving voltage based on the boot power supply voltage and the output pulse signal, wherein the bootstrap circuit includes a sense metal oxide semiconductor (MOS) transistor and a boot MOS transistor, wherein the sense MOS transistor includes a depression-type transistor.Type: ApplicationFiled: December 21, 2016Publication date: April 13, 2017Inventors: Ryo KANDA, Tetsu TODA, Junichi NAKAMURA, Kazuyuki UMEZU, Tomonobu KURIHARA, Takahiro NAGATSU, Yasushi NAKAHARA, Yoshinori KAYA
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Patent number: 9559687Abstract: In order to reduce the cost and the like of a power control device including a semiconductor device such as a driver IC, as well as an electronic system, the driver IC includes a high side driver, a level shift circuit, first and second transistors, and a comparator circuit. The first transistor is formed in a termination area. The second transistor is formed in the termination region and is driven by a first power supply voltage. The comparator circuit is formed in a first region to drive the first transistor to be ON when the voltage of a sense node is lower than the first power supply voltage, while driving the first transistor to be OFF when the voltage of the sense node is higher than the first power supply voltage. The second transistor is a depression type transistor.Type: GrantFiled: August 21, 2015Date of Patent: January 31, 2017Assignee: Renesas Electronics CorporationInventors: Ryo Kanda, Tetsu Toda, Junichi Nakamura, Kazuyuki Umezu, Tomonobu Kurihara, Takahiro Nagatsu, Yasushi Nakahara, Yoshinori Kaya
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Publication number: 20160164398Abstract: A method of controlling a power supply to a semiconductor device including a first region having a high-side drive circuit, a second region having a signal processing circuit, a low-side drive circuit and a voltage control circuit, and a separation region formed between the first and second regions and having a rectifying element, includes turning on a first control signal to the voltage control circuit, turning off the first control signal to the voltage control circuit, and repeating the turning on of the first control signal and the turning off the first control signal.Type: ApplicationFiled: February 12, 2016Publication date: June 9, 2016Inventors: Yoshinori Kaya, Yasushi Nakahara, Azuma Araya, Ryo Kanda, Tomonobu Kurihara, Tetsu Toda
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Patent number: 9287256Abstract: Provided is a semiconductor device including a substrate of a first conductivity type, a first circuit region, a separation region, a second circuit region, and a rectifying element. The rectifying element has a second conductivity type layer, a first high concentration second conductivity type region, a second high concentration second conductivity type region, an element isolation film, a first insulation layer, and a first conductive film. A first contact is coupled to the first high concentration second conductivity type region, and a second contact is coupled to the second high concentration second conductivity type region. A third contact is coupled to the first conductive film. The first contact, the second contact and the third contact are separated from each other.Type: GrantFiled: October 17, 2014Date of Patent: March 15, 2016Assignee: Renesas Electronics CorporationInventors: Yoshinori Kaya, Yasushi Nakahara, Azuma Araya, Ryo Kanda, Tomonobu Kurihara, Tetsu Toda
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Publication number: 20160056818Abstract: In order to reduce the cost and the like of a power control device including a semiconductor device such as a driver IC, as well as an electronic system, the driver IC includes a high side driver, a level shift circuit, first and second transistors, and a comparator circuit. The first transistor is formed in a termination area. The second transistor is formed in the termination region and is driven by a first power supply voltage. The comparator circuit is formed in a first region to drive the first transistor to be ON when the voltage of a sense node is lower than the first power supply voltage, while driving the first transistor to be OFF when the voltage of the sense node is higher than the first power supply voltage. The second transistor is a depression type transistor.Type: ApplicationFiled: August 21, 2015Publication date: February 25, 2016Inventors: Ryo KANDA, Tetsu TODA, Junichi NAKAMURA, Kazuyuki UMEZU, Tomonobu KURIHARA, Takahiro NAGATSU, Yasushi NAKAHARA, Yoshinori KAYA
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Publication number: 20150115342Abstract: Provided is a semiconductor device including a substrate of a first conductivity type, a first circuit region, a separation region, a second circuit region, and a rectifying element. The rectifying element has a second conductivity type layer, a first high concentration second conductivity type region, a second high concentration second conductivity type region, an element isolation film, a first insulation layer, and a first conductive film. A first contact is coupled to the first high concentration second conductivity type region, and a second contact is coupled to the second high concentration second conductivity type region. A third contact is coupled to the first conductive film. The first contact, the second contact and the third contact are separated from each other.Type: ApplicationFiled: October 17, 2014Publication date: April 30, 2015Inventors: Yoshinori KAYA, Yasushi NAKAHARA, Azuma ARAYA, Ryo KANDA, Tomonobu KURIHARA, Tetsu TODA
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Patent number: 8015328Abstract: An information storage device includes a storage that stores transfer data from an information processing device, the information storage device being removably connected to the information processing device, a switch unit that switches a data transfer mode of the information processing device in accordance with manipulation by a user, and a controller that controls the information processing device to transfer data in a mode in which data temporarily stored in a data storing area is transferred to the storage or in a mode in which data is transferred to the storage without being temporarily stored in the data storing area in accordance with the selection of the data transfer mode by the switch unit.Type: GrantFiled: January 9, 2009Date of Patent: September 6, 2011Assignee: Renesas Electronics CorporationInventors: Isao Sakakida, Yoshinori Horiguchi, Yuu Yamaguchi, Orie Tsuzuki, Noriaki Matsuno, Tomonobu Kurihara, Tadashi Maeda, Tomoyuki Yamase
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Patent number: 7873139Abstract: A signal processing device includes a detecting part that detects intensity of an input signal, a timer part that includes a time constant circuit and measures time based on a time constant of the time constant circuit, and a determination circuit that counts the number of times of switching of the input signal detected by the detecting part within the time measured by the time constant circuit.Type: GrantFiled: March 30, 2009Date of Patent: January 18, 2011Assignees: NEC Corporation, Renesas Electronics CorporationInventors: Noriaki Matsuno, Yoshinori Horiguchi, Yuu Yamaguchi, Orie Tsuzuki, Tomonobu Kurihara, Isao Sakakida, Tadashi Maeda, Tomoyuki Yamase
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Patent number: 7847599Abstract: A start signal detection circuit includes a wave-detection circuit 1 outputting a voltage in accordance with an envelope of a radio signal from an output point B, a reference voltage generation circuit 2 outputting a voltage at the output point B at a non-signal state as a reference voltage to a reference point C, and a differential amplification circuit 3 amplifying and outputting a voltage difference between the output point B and the reference point C.Type: GrantFiled: April 13, 2009Date of Patent: December 7, 2010Assignee: Renesas Electronics CorporationInventor: Tomonobu Kurihara
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Publication number: 20090261863Abstract: A start signal detection circuit includes a wave-detection circuit 1 outputting a voltage in accordance with an envelope of a radio signal from an output point B, a reference voltage generation circuit 2 outputting a voltage at the output point B at a non-signal state as a reference voltage to a reference point C, and a differential amplification circuit 3 amplifying and outputting a voltage difference between the output point B and the reference point C.Type: ApplicationFiled: April 13, 2009Publication date: October 22, 2009Applicant: NEC Electronics CorporationInventor: Tomonobu KURIHARA
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Publication number: 20090245454Abstract: A signal processing device includes a detecting part that detects intensity of an input signal, a timer part that includes a time constant circuit and measures time based on a time constant of the time constant circuit, and a determination circuit that counts the number of times of switching of the input signal detected by the detecting part within the time measured by the time constant circuit.Type: ApplicationFiled: March 30, 2009Publication date: October 1, 2009Applicants: NEC Electronics Corporation, NEC CorporationInventors: Noriaki Matsuno, Yoshinori Horiguchi, Yuu Yamaguchi, Orie Tsuzuki, Tomonobu Kurihara, Isao Sakakida, Tadashi Maeda, Tomoyuki Yamase
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Publication number: 20090187688Abstract: An information storage device includes a storage that stores transfer data from an information processing device, the information storage device being removably connected to the information processing device, a switch unit that switches a data transfer mode of the information processing device in accordance with manipulation by a user, and a controller that controls the information processing device to transfer data in a mode in which data temporarily stored in a data storing area is transferred to the storage or in a mode in which data is transferred to the storage without being temporarily stored in the data storing area in accordance with the selection of the data transfer mode by the switch unit.Type: ApplicationFiled: January 9, 2009Publication date: July 23, 2009Applicants: NEC ELECTRONICS CORPORATION, NEC CORPORATIONInventors: Isao Sakakida, Yoshinori Horiguchi, Yuu Yamaguchi, Orie Tsuzuki, Noriaki Matsuno, Tomonobu Kurihara, Tadashi Maeda, Tomoyuki Yamase