Patents by Inventor Takashi Taya

Takashi Taya 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).

  • Patent number: 11146110
    Abstract: A power reception device has: a rectifier circuit that generates a direct current voltage by having applied thereto an alternating current voltage, and has first and second output terminals that output the direct current voltage; a transistor, the drain and source of which are connected to the first and second output terminals; a gate driver circuit that controls the gate voltage of the transistor according to the voltage between the first and second output terminals; and a capacitor that has a first end that is connected to the drain of the transistor and a second end that is connected to the gate of the transistor.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: October 12, 2021
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Takashi Taya
  • Patent number: 11061074
    Abstract: A battery measurement device has an input terminal that receives a voltage of a secondary battery, a measurement circuit that measures a voltage value of a voltage received by the input terminal and generates a measurement information signal representing measurement results, a transmission unit that wirelessly transmits the measurement information signal, and a power source circuit that generates a power source voltage having a prescribed voltage value on the basis of the voltage of the input terminal, and supplies the power source voltage to the measurement circuit and the transmission unit.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: July 13, 2021
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Takashi Taya
  • Publication number: 20210208204
    Abstract: A signal transmission device and a battery monitoring device are provided. The signal transmission device is connected to an operation device including an operation circuit for performing an operation based on a first voltage, a measurement circuit for obtaining measurement data based on the first voltage, and a process control circuit for operating based on a lower voltage and control an operation of the operation circuit based on the measurement data, and transmits and receives signals between the process control circuit and the measurement circuit. The signal transmission device includes a power reception circuit for supplying power from the power transmission circuit to the measurement circuit to acquire measurement data, and a power transmission circuit for transmitting the power from a process control circuit to the power reception circuit to receive the measurement data from the power reception circuit and supply the same to the process control circuit.
    Type: Application
    Filed: March 18, 2021
    Publication date: July 8, 2021
    Applicant: LAPIS Semiconductor Co., Ltd.
    Inventor: TAKASHI TAYA
  • Patent number: 10983171
    Abstract: A signal transmission device and a battery monitoring device are provided. The signal transmission device is connected to an operation device including an operation circuit for performing an operation based on a first voltage, a measurement circuit for obtaining measurement data based on the first voltage, and a process control circuit for operating based on a lower voltage and control an operation of the operation circuit based on the measurement data, and transmits and receives signals between the process control circuit and the measurement circuit. The signal transmission device includes a power reception circuit for supplying power from the power transmission circuit to the measurement circuit to acquire measurement data, and a power transmission circuit for transmitting the power from a process control circuit to the power reception circuit to receive the measurement data from the power reception circuit and supply the same to the process control circuit.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: April 20, 2021
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventor: Takashi Taya
  • Patent number: 10826289
    Abstract: The disclosure provides a wireless power supply device, which includes: a power transmission coil; a first driving unit that alternatively performs an operation of transmitting a first driving current to one end of the power transmission coil and an operation of drawing a second driving current away from one end of the power transmission coil; a second driving unit that alternatively performs an operation of transmitting the second driving current to the other end of the power transmission coil and an operation of drawing the first driving current away from the other end of the power transmission coil; a current detection unit that detects amounts of the transmitted first and second driving current to generate a first signal, and detects an amount of the drawn second driving current to generate a second signal; and a control unit that determines an operation state based on the first and second signal.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: November 3, 2020
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventor: Takashi Taya
  • Publication number: 20200313462
    Abstract: A power reception device has: a rectifier circuit that generates a direct current voltage by having applied thereto an alternating current voltage, and has first and second output terminals that output the direct current voltage; a transistor, the drain and source of which are connected to the first and second output terminals; a gate driver circuit that controls the gate voltage of the transistor according to the voltage between the first and second output terminals; and a capacitor that has a first end that is connected to the drain of the transistor and a second end that is connected to the gate of the transistor.
    Type: Application
    Filed: March 20, 2020
    Publication date: October 1, 2020
    Applicant: LAPIS Semiconductor Co., Ltd.
    Inventor: Takashi TAYA
  • Publication number: 20200244067
    Abstract: The disclosure provides a wireless power supply device, which includes: a power transmission coil; a first driving unit that alternatively performs an operation of transmitting a first driving current to one end of the power transmission coil and an operation of drawing a second driving current away from one end of the power transmission coil; a second driving unit that alternatively performs an operation of transmitting the second driving current to the other end of the power transmission coil and an operation of drawing the first driving current away from the other end of the power transmission coil; a current detection unit that detects amounts of the transmitted first and second driving current to generate a first signal, and detects an amount of the drawn second driving current to generate a second signal; and a control unit that determines an operation state based on the first and second signal.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 30, 2020
    Applicant: LAPIS Semiconductor Co., Ltd.
    Inventor: TAKASHI TAYA
  • Patent number: 10630073
    Abstract: The disclosure provides a wireless power receiving device, a wireless power supply device, and a wireless power transmission system. The wireless power receiving device includes: a conversion unit that converts an alternative magnetic field into a reception voltage that has a voltage value corresponding to an amplitude of the alternative magnetic field; a power receiving circuit that generates a stabilized voltage with a fixed voltage value based on the reception voltage, and outputs an output voltage corresponding to the stabilized voltage via an output line; and a communication circuit that receives the stabilized voltage as a power-supply voltage to perform the data communication; the power receiving circuit includes a protection circuit that restricts an upper limit of the reception voltage to a first voltage value in the communication mode, and restricts the upper limit to a second voltage value higher than the first voltage value in the power supply mode.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: April 21, 2020
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventor: Takashi Taya
  • Patent number: 10566841
    Abstract: A wireless power supply device that performs alternately a wireless communication operation and a wireless power supply operation. The wireless power supply device includes a transmission coil configured to generate an AC (alternating current) magnetic field, a communication driving circuit configured to supply a communication driving current to the transmission coil for generating the AC magnetic field during only the wireless communication operation, and not the wireless power supply operation, and a power supply driving circuit configured to supply a power supply driving current to the transmission coil for generating the AC magnetic field during both the wireless communication operation and the wireless power supply operation.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: February 18, 2020
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventor: Takashi Taya
  • Patent number: 10488442
    Abstract: A wireless power feeding device includes first to Nth (N is an integer of 2 or more) switching elements connected in parallel to each other between a power line, which is connected to one end of a power transmission coil, and a ground line, each of the first to Nth switching elements supplying a current to the drive line in accordance with an oscillation signal; a first resistor connected in series with the first switching element between the power line and the ground line; and a current measurement circuit for generating a first measured current signal representing the amount of the drive current on the basis of the potential of one end of the first resistor.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: November 26, 2019
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Takashi Taya
  • Patent number: 10396572
    Abstract: A power transmission device includes: a power reception unit that receives electric power from outside; a power transmission line that transmits the electric power received with the power reception unit to a battery; a transmission cut-off switch that cuts off the power transmission line, a transmission control circuit that uses the electric power received in the power reception unit as operation power, receives a battery state signal indicating a state of the battery, and switches conduction and non-conduction of the transmission cut-off switch on the basis of the battery state signal; and a cut-off control circuit that monitors the received electric power from the power reception unit by receiving electric power from the battery, and forcibly puts the transmission cut-off switch in a non-conductive state when the received electric power is less than a specified value.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 27, 2019
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventor: Takashi Taya
  • Patent number: 10374469
    Abstract: The present disclosure provides a wireless power receiver including: a power receiver configured to receive electrical power that is wirelessly transmitted from a wireless power transmitter; a power reception-side communication section configured to wirelessly communicate with the wireless power transmitter; a storage section to which data received by the power reception-side communication section is written by using the electrical power received by the power transmitter; and a monitoring section configured to monitor the electrical power or a voltage that corresponds to the electrical power supplied to the storage section in a case in which the data is being written to the storage section, the monitoring section transmits write information, which indicates whether or not the data was correctly written to the storage section based on a monitoring result, from the power reception-side communication section to the wireless power transmitter information.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: August 6, 2019
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventors: Hiroji Akahori, Takashi Taya
  • Patent number: 10298428
    Abstract: A wireless transmission device includes a reception circuit that receives a ASK or PSK designation signal designating amplitude-shift keying (ASK) or phase-shift keying (PSK), respectively, an amplitude control signal generation circuit that generates an amplitude control signal having an amplitude corresponding to a change in a signal level of the data signal, a polarity reversal circuit that generates a polarity reversal signal by reversing a polarity of a carrier wave signal according to the signal level of the data signal upon receiving a ASK designation signal, an amplifier circuit that generates a PSK signal by amplifying the polarity reversal signal at an amplification rate based on the amplitude control signal upon receiving a PSK designation signal, and generates an ASK signal by modulating an amplitude of the carrier wave signal at an amplification rate based on the amplitude control signal upon receiving the ASK designation signal.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: May 21, 2019
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventor: Takashi Taya
  • Publication number: 20190128970
    Abstract: A battery measurement device has an input terminal that receives a voltage of a secondary battery, a measurement circuit that measures a voltage value of a voltage received by the input terminal and generates a measurement information signal representing measurement results, a transmission unit that wirelessly transmits the measurement information signal, and a power source circuit that generates a power source voltage having a prescribed voltage value on the basis of the voltage of the input terminal, and supplies the power source voltage to the measurement circuit and the transmission unit.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 2, 2019
    Applicant: LAPIS Semiconductor Co., Ltd.
    Inventor: Takashi TAYA
  • Publication number: 20180364310
    Abstract: A signal transmission device and a battery monitoring device are provided. The signal transmission device is connected to an operation device including an operation circuit for performing an operation based on a first voltage, a measurement circuit for obtaining measurement data based on the first voltage, and a process control circuit for operating based on a lower voltage and control an operation of the operation circuit based on the measurement data, and transmits and receives signals between the process control circuit and the measurement circuit. The signal transmission device includes a power reception circuit for supplying power from the power transmission circuit to the measurement circuit to acquire measurement data, and a power transmission circuit for transmitting the power from a process control circuit to the power reception circuit to receive the measurement data from the power reception circuit and supply the same to the process control circuit.
    Type: Application
    Filed: June 14, 2018
    Publication date: December 20, 2018
    Applicant: LAPIS SEMICONDUCTOR CO., LTD
    Inventor: Takashi Taya
  • Publication number: 20180337528
    Abstract: The disclosure provides a wireless power receiving device, a wireless power supply device, and a wireless power transmission system. The wireless power receiving device includes: a conversion unit that converts an alternative magnetic field into a reception voltage that has a voltage value corresponding to an amplitude of the alternative magnetic field; a power receiving circuit that generates a stabilized voltage with a fixed voltage value based on the reception voltage, and outputs an output voltage corresponding to the stabilized voltage via an output line; and a communication circuit that receives the stabilized voltage as a power-supply voltage to perform the data communication; the power receiving circuit includes a protection circuit that restricts an upper limit of the reception voltage to a first voltage value in the communication mode, and restricts the upper limit to a second voltage value higher than the first voltage value in the power supply mode.
    Type: Application
    Filed: May 10, 2018
    Publication date: November 22, 2018
    Applicant: LAPIS SEMICONDUCTOR CO., LTD
    Inventor: TAKASHI TAYA
  • Publication number: 20180145541
    Abstract: A wireless power supply device that performs alternately a wireless communication operation and a wireless power supply operation. The wireless power supply device includes a transmission coil configured to generate an AC (alternating current) magnetic field, a communication driving circuit configured to supply a communication driving current to the transmission coil for generating the AC magnetic field during only the wireless communication operation, and not the wireless power supply operation, and a power supply driving circuit configured to supply a power supply driving current to the transmission coil for generating the AC magnetic field during both the wireless communication operation and the wireless power supply operation.
    Type: Application
    Filed: November 20, 2017
    Publication date: May 24, 2018
    Applicant: LAPIS Semiconductor Co., Ltd.
    Inventor: Takashi TAYA
  • Publication number: 20180143223
    Abstract: A wireless power feeding device includes first to Nth (N is an integer of 2 or more) switching elements connected in parallel to each other between a power line, which is connected to one end of a power transmission coil, and a ground line, each of the first to Nth switching elements supplying a current to the drive line in accordance with an oscillation signal; a first resistor connected in series with the first switching element between the power line and the ground line; and a current measurement circuit for generating a first measured current signal representing the amount of the drive current on the basis of the potential of one end of the first resistor.
    Type: Application
    Filed: November 21, 2017
    Publication date: May 24, 2018
    Applicant: LAPIS Semiconductor Co., Ltd.
    Inventor: Takashi Taya
  • Publication number: 20180097379
    Abstract: A power transmission device includes: a power reception unit that receives electric power from outside; a power transmission line that transmits the electric power received with the power reception unit to a battery; a transmission cut-off switch that cuts off the power transmission line, a transmission control circuit that uses the electric power received in the power reception unit as operation power, receives a battery state signal indicating a state of the battery, and switches conduction and non-conduction of the transmission cut-off switch on the basis of the battery state signal; and a cut-off control circuit that monitors the received electric power from the power reception unit by receiving electric power from the battery, and forcibly puts the transmission cut-off switch in a non-conductive state when the received electric power is less than a specified value.
    Type: Application
    Filed: September 28, 2017
    Publication date: April 5, 2018
    Applicant: LAPIS Semiconductor Co., Ltd.
    Inventor: Takashi TAYA
  • Publication number: 20180091003
    Abstract: The present disclosure provides a wireless power receiver including: a power receiver configured to receive electrical power that is wirelessly transmitted from a wireless power transmitter; a power reception-side communication section configured to wirelessly communicate with the wireless power transmitter; a storage section to which data received by the power reception-side communication section is written by using the electrical power received by the power transmitter; and a monitoring section configured to monitor the electrical power or a voltage that corresponds to the electrical power supplied to the storage section in a case in which the data is being written to the storage section, the monitoring section transmits write information, which indicates whether or not the data was correctly written to the storage section based on a monitoring result, from the power reception-side communication section to the wireless power transmitter information.
    Type: Application
    Filed: September 27, 2017
    Publication date: March 29, 2018
    Inventors: HIROJI AKAHORI, TAKASHI TAYA