Patents by Inventor Shunichi Kubo

Shunichi Kubo 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).

  • Publication number: 20240056284
    Abstract: A bidirectional communication system 1 comprises a signal transmitting and receiving device 10 and a signal transmitting and receiving device 20 that perform bidirectional communication via a transmission path 30. The signal transmitting and receiving device 20 comprises a driver 21, a filter 22, a receiver 23, and a controller 24. The receiver 23 recovers a clock signal by performing frequency locking on a training pattern signal output through the filter 22, and outputs a recovered clock to the controller 24. The controller 24 receives the recovered clock output from the receiver 23, controls a cutoff frequency of the filter 22, and controls an operation of the driver 21 based on a frequency information of the recovered clock signal.
    Type: Application
    Filed: August 8, 2023
    Publication date: February 15, 2024
    Applicant: THINE ELECTRONICS, INC.
    Inventors: Shuhei Tsuruhara, Shunichi Kubo
  • Patent number: 11901525
    Abstract: In a battery monitoring system including a plurality of battery modules each including one or more cells, the battery modules are connected in series to each other. The battery monitoring system monitors the state of each cell based on the voltage value of the cell and the current value of the battery modules. A current detection unit detects the current value. Each voltage detection unit is associated with the corresponding one of the battery modules and detects the voltage value. Each slave unit is associated with the corresponding one of the battery modules, and wirelessly transmits information including synchronous current and voltage values detected by the current detection unit and the voltage detection unit. A master unit receives the information transmitted from the slave units. A central monitoring unit receives the information received by the master unit.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: February 13, 2024
    Assignee: DENSO CORPORATION
    Inventors: Tatsuhiro Numata, Shunichi Kubo
  • Publication number: 20240030803
    Abstract: A power converter has a capacitor and a power conversion unit having a series-connected unit composed of an upper arm side switching element and a lower arm side switching element. The capacitor is connected in parallel with the serios connection unit. The power conversion unit supplies electric power to a motor. A controller for the power conversion unit has a frequency characteristics estimation part estimating frequency characteristics of a battery current of the battery when a current is flowing between the power convertor and the battery, a ripple current setting part determining a ripple frequency of a ripple current contained in the battery current based on the frequency characteristics of the battery current, and a control part performing a switching control of the switching elements based on the ripple frequency in order to generate the ripple current.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 25, 2024
    Applicant: DENSO CORPORATION
    Inventors: Ryoya KAZAOKA, Yusuke SHINDO, Shunichi KUBO, Ken TOSHIYUKI
  • Patent number: 11830989
    Abstract: In a battery system including an assembled battery having a plurality of battery cells connected in series, each of a plurality of monitoring units includes a voltage classification unit configured to classify a terminal voltage between each pair of input terminals in the monitoring unit as a cell voltage or as a zero voltage that is a terminal voltage of substantially zero. The input terminals in each of all or all but one of the monitoring units include at least one specific terminal pair for acquiring the zero voltage at a different position and/or include a different number of specific terminal pairs for acquiring the zero voltage. Each of the plurality of monitoring units further includes an identifier generation unit configured to generate an identifier based on at least one of the position of the at least one specific terminal pair and the number of specific terminal pairs.
    Type: Grant
    Filed: July 13, 2022
    Date of Patent: November 28, 2023
    Assignee: DENSO CORPORATION
    Inventors: Naoto Yamashita, Masakazu Kouda, Fumihiko Hori, Shunichi Kubo
  • Publication number: 20230288491
    Abstract: A battery monitoring device for monitoring an assembled battery having multiple battery cells includes: a range specifying unit that specifies a detection range; a voltage detection unit that detects a voltage of each battery cell in the detection range, includes an A/D converter for inputting a voltage corresponding to the voltage of each battery cell and a digital filter for inputting a digital signal output from the A/D converter and functioning as a low pass filter, and outputs an output signal of the digital filter as a detection signal representing a detection result of the voltage of each battery cell; and a characteristic setting unit that sets a characteristic of the digital filter.
    Type: Application
    Filed: May 19, 2023
    Publication date: September 14, 2023
    Inventors: KAZUTAKA HONDA, YUKIHIRO TOMONAGA, SHUNICHI KUBO
  • Patent number: 11606187
    Abstract: One embodiment relates to a transmitting device, a receiving device, and the like for preventing increases in the number of communication links, power consumption, and circuit layout area. The transmitting device includes a high-speed signal generator, a low-speed signal generator, and a signal superimposing unit. The high-speed signal generator generates a high-speed signal having a limited frequency band. The low-speed signal generator generates a low-speed signal having a frequency lower than the frequency band of the high-speed signal. The signal superimposing unit outputs a superimposed signal of the high-speed signal and the low-speed signal. The receiving device includes a signal separator and a recovery unit. The signal separator separates the received signal into the high-speed signal and the low-speed signal. The recovery unit performs frequency tracking based on the separated low-speed signal and performs phase tracking based on the separated high-speed signal.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: March 14, 2023
    Assignee: THINE ELECTRONICS, INC.
    Inventors: Shunichi Kubo, Satoshi Miura, Takayuki Suzuki
  • Patent number: 11506718
    Abstract: A connection part which connects a terminal part and a processing part include an equalization resistor that is inserted into each main line and a 0-? resistor that is a short circuit line for short circuiting a main line of a first terminal and a main line of a second terminal. In the terminal part, the second terminal s unused, and a battery cell adjacent to a high-potential side of a stack bar is connected between the first terminal and a third terminal.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: November 22, 2022
    Inventors: Masahiko Ito, Shunichi Kubo, Hayato Mizoguchi
  • Publication number: 20220352569
    Abstract: In a battery system including an assembled battery having a plurality of battery cells connected in series, each of a plurality of monitoring units includes a voltage classification unit configured to classify a terminal voltage between each pair of input terminals in the monitoring unit as a cell voltage or as a zero voltage that is a terminal voltage of substantially zero. The input terminals in each of all or all but one of the monitoring units include at least one specific terminal pair for acquiring the zero voltage at a different position and/or include a different number of specific terminal pairs for acquiring the zero voltage. Each of the plurality of monitoring units further includes an identifier generation unit configured to generate an identifier based on at least one of the position of the at least one specific terminal pair and the number of specific terminal pairs.
    Type: Application
    Filed: July 13, 2022
    Publication date: November 3, 2022
    Applicant: DENSO CORPORATION
    Inventors: Naoto YAMASHITA, Masakazu KOUDA, Fumihiko HORI, Shunichi KUBO
  • Publication number: 20220317718
    Abstract: A reference current source includes a reference current path, a first output current path and a second output current path. The reference current path includes a diode-connected first transistor, a diode-connected second transistor, and a first resistor that are connected in series between a first fixed potential and a second fixed potential. The first output current path includes a third transistor having a gate connected to a gate of the second transistor, forming a current mirror together with the second transistor, and a second resistor interposed between the third transistor and the first fixed potential. The second output current path includes a voltage-current conversion circuit to which a potential of a third node between the third transistor and the second resistor in the first output current path is applied and through which a reference current flows.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 6, 2022
    Applicant: THINE ELECTRONICS , INC.
    Inventors: Yuji GENDAI, Shunichi KUBO
  • Publication number: 20220320612
    Abstract: In a battery monitoring system including a plurality of battery modules each including one or more cells, the battery modules are connected in series to each other. The battery monitoring system monitors the state of each cell based on the voltage value of the cell and the current value of the battery modules. A current detection unit detects the current value. Each voltage detection unit is associated with the corresponding one of the battery modules and detects the voltage value. Each slave unit is associated with the corresponding one of the battery modules, and wirelessly transmits information including synchronous current and voltage values detected by the current detection unit and the voltage detection unit. A master unit receives the information transmitted from the slave units. A central monitoring unit receives the information received by the master unit.
    Type: Application
    Filed: June 21, 2022
    Publication date: October 6, 2022
    Applicant: DENSO CORPORATION
    Inventors: Tatsuhiro NUMATA, Shunichi KUBO
  • Patent number: 11424493
    Abstract: In a battery system including an assembled battery having a plurality of battery cells connected in series, each of a plurality of monitoring units includes a voltage classification unit configured to classify a terminal voltage between each pair of input terminals in the monitoring unit as a cell voltage or as a zero voltage that is a terminal voltage of substantially zero. The input terminals in each of all or all but one of the monitoring units include at least one specific terminal pair for acquiring the zero voltage at a different position and/or include a different number of specific terminal pairs for acquiring the zero voltage. Each of the plurality of monitoring units further includes an identifier generation unit configured to generate an identifier based on at least one of the position of the at least one specific terminal pair and the number of specific terminal pairs.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: August 23, 2022
    Assignee: DENSO CORPORATION
    Inventors: Naoto Yamashita, Masakazu Kouda, Fumihiko Hori, Shunichi Kubo
  • Patent number: 11417918
    Abstract: In a battery monitoring system including a plurality of battery modules each including one or more cells, the battery modules are connected in series to each other. The battery monitoring system monitors the state of each cell based on the voltage value of the cell and the current value of the battery modules. A current detection unit detects the current value. Each voltage detection unit is associated with the corresponding one of the battery modules and detects the voltage value. Each slave unit is associated with the corresponding one of the battery modules, and wirelessly transmits information including synchronous current and voltage values detected by the current detection unit and the voltage detection unit. A master unit receives the information transmitted from the slave units. A central monitoring unit receives the information received by the master unit.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: August 16, 2022
    Assignee: DENSO CORPORATION
    Inventors: Tatsuhiro Numata, Shunichi Kubo
  • Publication number: 20220131389
    Abstract: A battery management device is configured to set a limited measurement range that limits a range for measuring a voltage of each of a plurality of batteries for a vehicle. The battery management device is configured to measure the voltage of each of the plurality of batteries within the limited measurement range.
    Type: Application
    Filed: October 15, 2021
    Publication date: April 28, 2022
    Inventors: Shogo SHIGEMORI, Shunichi KUBO, Takeshi IIDA, Yukihiro TOMONAGA, Taisuke KURACHI, Shozo SUZUKI, Shinya KATO
  • Patent number: 10951164
    Abstract: Provided is a voltage-controlled oscillator capable of suppressing performance deterioration due to a leak current of a variable capacitive element. Each of the first capacitive circuit and the second capacitive circuit includes a variable capacitive element, a capacitive element, a detection circuit, and a compensation circuit. The variable capacitive element is provided between nodes. A capacitance value of variable capacitive element depends on a voltage value between the nodes. The detection circuit applies a bias voltage value to the second node, and detects an amount of leak current flowing through the variable capacitive element. The compensation circuit causes a current for compensating for the leak current of the variable capacitive element to flow through the first node on the basis of a detection result of the detection circuit.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: March 16, 2021
    Assignee: THINE ELECTRONICS, INC.
    Inventor: Shunichi Kubo
  • Patent number: 10819356
    Abstract: A PLL frequency synthesizer includes a voltage controlled oscillator that outputs an oscillation signal having a frequency corresponding to a control voltage value, a phase comparison unit that outputs a phase difference signal representing a phase difference between a feedback oscillation signal and a reference oscillation signal, a charge pump that outputs a charge and discharge current according to the phase difference, a loop filter that outputs the control voltage value, which is increased or decreased according to a charge and discharge amount of a capacitive element, to the voltage controlled oscillator, a detection unit that detects a change rate of the control voltage value, and a control unit that adjusts the charge and discharge current, a characteristic of the loop filter, or a characteristic of the voltage controlled oscillator based on a detection result of the detection unit.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: October 27, 2020
    Assignee: THINE ELECTRONICS, INC.
    Inventor: Shunichi Kubo
  • Publication number: 20200235442
    Abstract: In a battery system including an assembled battery having a plurality of battery cells connected in series, each of a plurality of monitoring units includes a voltage classification unit configured to classify a terminal voltage between each pair of input terminals in the monitoring unit as a cell voltage or as a zero voltage that is a terminal voltage of substantially zero. The input terminals in each of all or all but one of the monitoring units include at least one specific terminal pair for acquiring the zero voltage at a different position and/or include a different number of specific terminal pairs for acquiring the zero voltage. Each of the plurality of monitoring units further includes an identifier generation unit configured to generate an identifier based on at least one of the position of the at least one specific terminal pair and the number of specific terminal pairs.
    Type: Application
    Filed: January 16, 2020
    Publication date: July 23, 2020
    Applicant: DENSO CORPORATION
    Inventors: Naoto YAMASHITA, Masakazu KOUDA, Fumihiko HORI, Shunichi KUBO
  • Patent number: 10715152
    Abstract: A PLL circuit of one embodiment has a structure for preferably setting the FV characteristic of an LC-VCO. The PLL circuit includes a voltage controlled oscillator, a phase comparator, a charge pump, a loop filter, and an FV characteristic adjustment unit setting the FV characteristic. The voltage controlled oscillator has an FV characteristic indicating the relationship between a control signal and a frequency and outputs an oscillation signal having a frequency corresponding to the control signal based on the FV characteristic. The phase comparator detects a phase difference between an input signal and the control signal. The charge pump outputs a corrected voltage value changed according to the phase difference. The loop filter outputs a control voltage value changed in response to corrected voltage value variations. The FV characteristic adjustment unit generates an FV characteristic control signal by a mean corrected voltage value.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: July 14, 2020
    Assignee: THINE ELECTRONICS, INC.
    Inventors: Shunichi Kubo, Yusuke Fujita
  • Publication number: 20200145182
    Abstract: One embodiment relates to a transmitting device, a receiving device, and the like for preventing increases in the number of communication links, power consumption, and circuit layout area. The transmitting device includes a high-speed signal generator, a low-speed signal generator, and a signal superimposing unit. The high-speed signal generator generates a high-speed signal having a limited frequency band. The low-speed signal generator generates a low-speed signal having a frequency lower than the frequency band of the high-speed signal. The signal superimposing unit outputs a superimposed signal of the high-speed signal and the low-speed signal. The receiving device includes a signal separator and a recovery unit. The signal separator separates the received signal into the high-speed signal and the low-speed signal. The recovery unit performs frequency tracking based on the separated low-speed signal and performs phase tracking based on the separated high-speed signal.
    Type: Application
    Filed: October 31, 2019
    Publication date: May 7, 2020
    Applicant: THINE ELECTRONICS, INC.
    Inventors: Shunichi Kubo, Satoshi Miura, Takayuki Suzuki
  • Patent number: 10623005
    Abstract: A PLL circuit includes a phase comparator, a charge pump 20, a loop filter 30, a voltage controlled oscillator 40, a frequency divider, and a phase compensator 70. The loop filter 30 includes a resistor 31, a first capacitance element 32, and a second capacitance element 33. The phase compensator 70 is provided in parallel to the charge pump 20 and adds a differentiation term to an open-loop transfer function. The phase compensator 70 includes a buffer 71 receiving a phase difference signal output from the phase comparator and a third capacitance element 72 provided between an output terminal of the buffer 71 and an input terminal of the loop filter 30.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: April 14, 2020
    Assignee: THINE ELECTRONICS, INC.
    Inventors: Shunichi Kubo, Mitsutoshi Sugawara, Satoshi Miura, Akihiro Moto
  • Publication number: 20200099383
    Abstract: A PLL frequency synthesizer includes a voltage controlled oscillator that outputs an oscillation signal having a frequency corresponding to a control voltage value, a phase comparison unit that outputs a phase difference signal representing a phase difference between a feedback oscillation signal and a reference oscillation signal, a charge pump that outputs a charge and discharge current according to the phase difference, a loop filter that outputs the control voltage value, which is increased or decreased according to a charge and discharge amount of a capacitive element, to the voltage controlled oscillator, a detection unit that detects a change rate of the control voltage value, and a control unit that adjusts the charge and discharge current, a characteristic of the loop filter, or a characteristic of the voltage controlled oscillator based on a detection result of the detection unit.
    Type: Application
    Filed: May 24, 2017
    Publication date: March 26, 2020
    Applicant: THINE ELCTRONICS, INC.
    Inventor: Shunichi KUBO