Patents by Inventor Toshiyuki Umeda
Toshiyuki Umeda 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: 10158240Abstract: An electrical storage device according to an embodiment includes a power generator; a first-type capacitor that stores the electrical power generated by the power generator; second-type capacitors that are connected to the first-type capacitor in parallel; switches each of which is connected to one of the second-type capacitors; and a control circuit that controls the switches. Every time either a charging voltage or an observation voltage proportional to the charging voltage exceeds a first threshold value, the control circuit controls the switches in such a way that the i+1-th second-type capacitor (where i is an integer equal to or greater than zero) is additionally connected to the first-type capacitor in parallel.Type: GrantFiled: July 18, 2016Date of Patent: December 18, 2018Assignee: Kabushiki Kaisha ToshibaInventors: Takeshi Ueno, Toshiyuki Umeda
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Patent number: 10027378Abstract: According to one embodiment, a power reception device includes: a power receiver that wirelessly receives power from a power transmission device; a power storage that stores the power received by the power receiver; and a signal transmitter configured to transmit a detection signal, the signal transmitter being independent of a power system operating with power fed from the power storage.Type: GrantFiled: September 15, 2016Date of Patent: July 17, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Toshiyuki Umeda, Hideo Kasami, Takeshi Ueno
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Patent number: 9787716Abstract: A power-saving control apparatus includes a memory storing first to Nth different authentication codes, determines, every time a signal including an authentication code is received, whether the authentication code in the received signal is a valid code which matches one of the authentication codes in the memory, outputs an operation signal to a main apparatus when the authentication code in the received signal is determined to be the valid code, and generates a new authentication code, when (a) the number of times the authentication code in each received signal matches a first authentication code of the authentication codes in the memory is equal to a predetermined value or (b) the authentication code in the received signal matches a second or subsequent authentication code of the authentication codes in the memory, to delete one of the authentication codes in the memory, and to store the new authentication code in the memory.Type: GrantFiled: November 12, 2008Date of Patent: October 10, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Keisuke Mera, Yusuke Doi, Takafumi Sakamoto, Toshiyuki Umeda, Shoji Otaka
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Publication number: 20170141818Abstract: According to one embodiment, a power reception device includes: a power receiver that wirelessly receives power from a power transmission device; a power storage that stores the power received by the power receiver; and a signal transmitter configured to transmit a detection signal, the signal transmitter being independent of a power system operating with power fed from the power storage.Type: ApplicationFiled: September 15, 2016Publication date: May 18, 2017Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Toshiyuki UMEDA, Hideo KASAMI, Takeshi UENO
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Publication number: 20170133571Abstract: In order to make possible to perform thermoelectric generation utilizing a thermal source placed outside a housing case, according to one embodiment, an energy harvesting device is provided. The energy harvesting device includes: a housing case; and a thermoelectric generation element arranged to contact with an outer surface of the housing case.Type: ApplicationFiled: September 8, 2016Publication date: May 11, 2017Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Takeshi UENO, Toshiyuki UMEDA, Hideo KASAMI
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Patent number: 9614487Abstract: A receiving apparatus includes a variable gain unit to change between a first gain and a smaller second gain, and to amplify a received signal to obtain an amplified signal; a comparator to compare a power of the amplified signal with a reference value; and a controller to set a gain to the first gain while in a standby state, to reset a gain to a third gain between the first and second gains if in a standby state the power of the received signal is larger than the reference value, and then to set a gain to the first gain and return to the standby state if the power is equal to or lower than the reference value, or if not, to a fourth gain between the first and third gains.Type: GrantFiled: March 9, 2012Date of Patent: April 4, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Shoji Otaka, Tsuyoshi Kogawa, Koji Ogura, Toshiyuki Umeda, Takafumi Sakamoto, Fumi Moritsuka, Hiroaki Ishihara
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Publication number: 20170033577Abstract: An electrical storage device according to an embodiment includes a power generator; a first-type capacitor that stores the electrical power generated by the power generator; second-type capacitors that are connected to the first-type capacitor in parallel; switches each of which is connected to one of the second-type capacitors; and a control circuit that controls the switches. Every time either a charging voltage or an observation voltage proportional to the charging voltage exceeds a first threshold value, the control circuit controls the switches in such a way that the i+1-th second-type capacitor (where i is an integer equal to or greater than zero) is additionally connected to the first-type capacitor in parallel.Type: ApplicationFiled: July 18, 2016Publication date: February 2, 2017Applicant: Kabushiki Kaisha ToshibaInventors: Takeshi UENO, Toshiyuki UMEDA
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Patent number: 9515606Abstract: According to an embodiment, there is provided with an oscillator including: a clock circuit, a power supply current source and an oscillating circuit wherein the clock circuit generates a clock signal, the power supply current source generates a power supply current according to the clock signal, and the oscillating circuit generates an oscillation signal of a higher frequency than a frequency of the clock signal based on the power supply current and a received signal from an input terminal, the received signal having amplitude of a predetermined level or more.Type: GrantFiled: June 18, 2012Date of Patent: December 6, 2016Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Toshiyuki Umeda, Shoji Otaka
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Patent number: 9325362Abstract: A rectification circuit includes a first field-effect transistor and a bias voltage generation circuit. The field-effect transistor includes a first gate terminal, a first source terminal, a first source region having a first p-type diffusion layer and connected to the first source terminal, a first drain terminal, and a first drain region having a first n-type diffusion layer and connected to the first drain terminal. The bias voltage generation circuit is configured to apply a DC voltage between the first gate terminal and the first drain terminal.Type: GrantFiled: August 22, 2013Date of Patent: April 26, 2016Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Toshiyuki Umeda, Shoji Otaka
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Patent number: 9219459Abstract: A receiving device includes a rectifier configured to rectify a received signal and a bias supply unit configured to intermittently supply the rectifier with a bias voltage corresponding to a threshold voltage of the rectifier. The receiving device further includes a detector configured to detect the received signal based on an output of the rectifier and a controller configured to control the bias supply unit to stop supplying the bias voltage upon detection of the received signal by the detector.Type: GrantFiled: September 13, 2012Date of Patent: December 22, 2015Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Toshiyuki Umeda, Shoji Otaka
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Patent number: 9025408Abstract: According to an embodiment, a semiconductor integrated circuit includes a regulator, a level shifter and a switch circuit. The regulator converts an input voltage that is a difference in potential between a first terminal and a third terminal into an output voltage that is a difference in potential between a second terminal and the third terminal. The level shifter adjusts a voltage level between a first terminal and a second terminal. The switch circuit includes a first switch selectively connecting the third terminal of the regulator to a first potential, a second switch selectively connecting the third terminal of the regulator to the first terminal of the level shifter, and a third switch selectively connecting the third terminal of the regulator to a second potential.Type: GrantFiled: April 22, 2014Date of Patent: May 5, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Toshiyuki Umeda, Shoji Otaka
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Publication number: 20140362655Abstract: According to an embodiment, a semiconductor integrated circuit includes a regulator, a level shifter and a switch circuit. The regulator converts an input voltage that is a difference in potential between a first terminal and a third terminal into an output voltage that is a difference in potential between a second terminal and the third terminal. The level shifter adjusts a voltage level between a first terminal and a second terminal. The switch circuit includes a first switch selectively connecting the third terminal of the regulator to a first potential, a second switch selectively connecting the third terminal of the regulator to the first terminal of the level shifter, and a third switch selectively connecting the third terminal of the regulator to a second potential.Type: ApplicationFiled: April 22, 2014Publication date: December 11, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Toshiyuki UMEDA, Shoji OTAKA
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Publication number: 20140093016Abstract: A rectification circuit includes a first field-effect transistor and a bias voltage generation circuit. The field-effect transistor includes a first gate terminal, a first source terminal, a first source region having a first p-type diffusion layer and connected to the first source terminal, a first drain terminal, and a first drain region having a first n-type diffusion layer and connected to the first drain terminal. The bias voltage generation circuit is configured to apply a DC voltage between the first gate terminal and the first drain terminal.Type: ApplicationFiled: August 22, 2013Publication date: April 3, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Toshiyuki UMEDA, Shoji Otaka
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Patent number: 8588118Abstract: A wireless communication device includes: a packet detection part detecting presence/absence of a reception of a packet; a judgment part judging whether or not temporal change of presence/absence of the reception of the packet detected in the packet detection part corresponds to a predetermined identifier; and a power source control unit controlling power supply from a power source based on a result of a judgment in the judgment part.Type: GrantFiled: October 31, 2008Date of Patent: November 19, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Takafumi Sakamoto, Kiyoshi Toshimitsu, Toshiyuki Umeda, Shoji Otaka, Keisuke Mera
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Publication number: 20130249676Abstract: A receiving device includes a rectifier configured to rectify a received signal and a bias supply unit configured to intermittently supply the rectifier with a bias voltage corresponding to a threshold voltage of the rectifier. The receiving device further includes a detector configured to detect the received signal based on an output of the rectifier and a controller configured to control the bias supply unit to stop supplying the bias voltage upon detection of the received signal by the detector.Type: ApplicationFiled: September 13, 2012Publication date: September 26, 2013Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Toshiyuki UMEDA, Shoji Otaka
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Patent number: 8407470Abstract: A control device being a control device communicating with a controlled device to control the controlled device includes: a first memory to store first authentication information for authenticating the controlled device; a second memory to store second authentication information for making the controlled device authenticate itself; a determination unit to compare third authentication information sent from the controlled device for specifying the controlled device with the first authentication information; a calculator to perform calculation processing on the first authentication information or the third authentication information using the second authentication information to generate a calculated value; a transmitter to transmit, when the determination unit determines that the first authentication information and the third authentication information are the same, the calculated value to the controlled device; and a memory controller to update the first authentication information.Type: GrantFiled: February 2, 2009Date of Patent: March 26, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Toshiyuki Nakanishi, Takafumi Sakamoto, Keisuke Mera, Toshiyuki Umeda, Shoji Otaka, Yusuke Doi
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Publication number: 20130059548Abstract: According to an embodiment, there is provided with an oscillator including: a clock circuit, a power supply current source and an oscillating circuit wherein the clock circuit generates a clock signal, the power supply current source generates a power supply current according to the clock signal, and the oscillating circuit generates an oscillation signal of a higher frequency than a frequency of the clock signal based on the power supply current and a received signal from an input terminal, the received signal having amplitude of a predetermined level or more.Type: ApplicationFiled: June 18, 2012Publication date: March 7, 2013Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Toshiyuki UMEDA, Shoji Otaka
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Patent number: 8339278Abstract: An electronic system includes: an AC-DC converter to convert an AC voltage into a DC voltage and to supply the DC voltage to a secondary battery; a first detector to detect a remaining amount of the secondary battery; a transmitter to transmit a signal corresponding to the remaining amount of the secondary battery; a receiver to receive the signal transmitted by the transmitter; and a controller to control the AC-DC converter using the signal received by the receiver.Type: GrantFiled: September 15, 2009Date of Patent: December 25, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Takafumi Sakamoto, Koji Ogura, Shoji Otaka, Toshiyuki Umeda, Tsuyoshi Kogawa, Manabu Mukai
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Patent number: 8327160Abstract: In a remote controller, a startup time or a first time duration until the startup time is input into an input unit. A timer unit counts a clock time or a second time duration. A control unit generates a signal to turn on an electrical apparatus when the second time duration reaches the first time duration, or when the clock time equals to the startup time. A transmitting unit transmits the signal. In the electrical apparatus, a main unit operates main function. A transformer supplies electricity from an external power source to the main unit through a switch. A rectifier rectifies the signal. A signal identifying unit identifies it. A reservation memory unit keeps parameter for main function. A control unit turns on the switch and controls the main unit according to the parameter when the signal is received. A battery supplies electricity to above units.Type: GrantFiled: July 13, 2009Date of Patent: December 4, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Takafumi Sakamoto, Toshiyuki Nakanishi, Makoto Tsuruta, Keisuke Mera, Toshiyuki Umeda, Shoji Otaka
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Publication number: 20120231756Abstract: A receiving apparatus includes a variable gain unit to change between a first gain and a smaller second gain, and to amplify a received signal to obtain an amplified signal; a comparator to compare a power of the amplified signal with a reference value; and a controller to set a gain to the first gain while in a standby state, to reset a gain to a third gain between the first and second gains if in a standby state the power of the received signal is larger than the reference value, and then to set a gain to the first gain and return to the standby state if the power is equal to or lower than the reference value, or if not, to a fourth gain between the first and third gains.Type: ApplicationFiled: March 9, 2012Publication date: September 13, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Shoji Otaka, Tsuyoshi Kogawa, Koji Ogura, Toshiyuki Umeda, Takafumi Sakamoto, Fumi Moritsuka, Hiroaki Ishihara