Patents by Inventor Takatoshi Itagaki

Takatoshi Itagaki 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: 20200136200
    Abstract: An electronic apparatus includes a secondary battery, a deformation amount detector configured to detect a deformation amount of the secondary battery, a full charge detector configured to detect a full charge of the secondary battery, a stable state detector configured to detect a stable state after a full charge is detected by the full charge detector, and a state determination unit configured to determine a state of the secondary battery using the deformation amount detected by the deformation amount detector when the stable state is detected by the stable state detector.
    Type: Application
    Filed: September 4, 2019
    Publication date: April 30, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tetsu NISHIDA, Takatoshi ITAGAKI, Noriyuki WAINAI, Yasuhiro KINOSHITA
  • Publication number: 20200136169
    Abstract: An electronic apparatus includes a secondary battery; a touch panel; a deformation amount detector configured to detect a deformation amount of the secondary battery; a touch determination unit configured to determine whether the touch panel is in a touch state; and a state determination unit configured to determine a state of the secondary battery using the deformation amount detected by the deformation amount detector when the touch panel is in the non-touch state based on a determination result of the touch determination unit.
    Type: Application
    Filed: September 4, 2019
    Publication date: April 30, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tetsu NISHIDA, Takatoshi ITAGAKI, Noriyuki WAINAI, Yasuhiro KINOSHITA
  • Publication number: 20200106381
    Abstract: A motor control circuit includes a control circuit configured to control a switching operation of an inverter circuit, the inverter circuit being configured to supply an alternating current power to a motor, and includes a determination-information generating circuit configured to generate at least one determination value that conveys information on whether the motor malfunctions or deteriorates. The motor control circuit includes a determination circuit configured to determine whether the motor malfunctions or deteriorates based on the determination value to output, as an interrupt signal, a signal indicating that the motor malfunctions or deteriorates to the control circuit.
    Type: Application
    Filed: September 20, 2019
    Publication date: April 2, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Makio ABE, Takatoshi ITAGAKI, Shu HAYASHI, Masato AOKI
  • Patent number: 10355499
    Abstract: A battery protection circuit for protecting a secondary battery, the battery protection circuit not having a CPU, includes a non-volatile memory into which characteristics data determining protective characteristics of the battery protection circuit are writable; and a protection operation circuit which performs a protection operation of the secondary battery based on the characteristics data read out of the non-volatile memory.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: July 16, 2019
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Takashi Takeda, Ryota Kageyama, Koichi Murano, Junji Takeshita, Takeshi Yamaguchi, Takatoshi Itagaki, Koji Yano
  • Patent number: 9762072
    Abstract: A secondary battery protection circuit for protecting a secondary battery including: a power supply terminal; a protection operation circuit configured to monitor a state of the secondary battery through the power supply terminal to generate a signal for turning on/off conduction of a current path between the secondary battery and a load according to a protection state determined by the monitored state of the secondary battery; a nonvolatile memory in which data is written by a writing voltage being provided at the power supply terminal, an operation of the secondary battery protection circuit being controlled by the data; a voltage generation circuit configured to generate a provision voltage which is provided to a low withstand voltage circuit; and a control circuit configured to enable the nonvolatile memory to store the data therein in accordance with the protection state upon an input voltage being greater than a determination threshold voltage.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: September 12, 2017
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Ryota Kageyama, Takashi Takeda, Koichi Murano, Takatoshi Itagaki
  • Publication number: 20160190835
    Abstract: A secondary battery protection circuit for protecting a secondary battery including: a power supply terminal; a protection operation circuit configured to monitor a state of the secondary battery through the power supply terminal to generate a signal for turning on/off conduction of a current path between the secondary battery and a load according to a protection state determined by the monitored state of the secondary battery; a nonvolatile memory in which data is written by a writing voltage being provided at the power supply terminal, an operation of the secondary battery protection circuit being controlled by the data; a voltage generation circuit configured to generate a provision voltage which is provided to a low withstand voltage circuit; and a control circuit configured to enable the nonvolatile memory to store the data therein in accordance with the protection state upon an input voltage being greater than a determination threshold voltage.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 30, 2016
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Ryota KAGEYAMA, Takashi TAKEDA, Koichi MURANO, Takatoshi ITAGAKI
  • Publication number: 20160118821
    Abstract: A battery protection circuit for protecting a secondary battery, the battery protection circuit not having a CPU, includes a non-volatile memory into which characteristics data determining protective characteristics of the battery protection circuit are writable; and a protection operation circuit which performs a protection operation of the secondary battery based on the characteristics data read out of the non-volatile memory.
    Type: Application
    Filed: October 7, 2015
    Publication date: April 28, 2016
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Takashi TAKEDA, Ryota KAGEYAMA, Koichi MURANO, Junji TAKESHITA, Takeshi YAMAGUCHI, Takatoshi ITAGAKI, Koji YANO
  • Patent number: 9000552
    Abstract: In a semiconductor integrated circuit device including a digital circuit region in which a digital circuit is formed, and an analog circuit region in which an analog circuit is formed, the analog circuit region is separated into an active element region in which an active element of the analog circuit is formed, and a resistive and capacitive element region in which a resistor or a capacitor of the analog circuit is formed, the resistive and capacitive element region is arranged in a region adjacent to the digital circuit region, and the active element region is arranged in a region separated from the digital circuit region.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: April 7, 2015
    Assignee: Mitsumi Electric Co., Ltd.
    Inventor: Takatoshi Itagaki
  • Patent number: 8658300
    Abstract: A fuel gauge circuit detects a residual quantity of a battery 1 and is disposed on a substrate 20 together with a protection circuit 40 which protects charging/discharging of the battery 1. The fuel gauge circuit includes a voltage monitor terminal T1 disposed on a side facing a positive power-supply terminal 21 of the substrate and connected to each of the positive power-supply terminal 21 and a voltage sensor 31 disposed in the circuit, a voltage through terminal T6 disposed on a side facing the protection circuit, opposite to the side facing the positive power-supply terminal 21, and connected to a voltage monitor terminal T11 of the protection circuit, and a wiring 32 disposed within the circuit to connect the voltage monitor terminal T1 of the fuel gauge circuit to the voltage through terminal T11.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: February 25, 2014
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Takatoshi Itagaki, Akira Ikeuchi, Makio Abe
  • Patent number: 8140129
    Abstract: Disclosed is a mobile phone terminal with a battery pack containing a retraceable battery as power supply, and transmitting and receiving radio-signals to and from a mobile phone system base transceiver station. The mobile phone terminal includes a data communication terminal communicating data with the battery pack, an intermittent receiving processor periodically carrying out intermittent receiving processing via the base transceiver station when the mobile phone terminal is in a standby operation, and a battery status determining unit transmitting, while the intermittent receiving processor is carrying out intermittent receiving processing, an activating signal to the battery pack via the data communication terminal and reading battery status data from the activated battery pack.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: March 20, 2012
    Assignees: Sony Ericsson Mobile Communications Japan, Inc, Mitsumi Electric Co., Ltd.
    Inventors: Katsuya Suzuki, Kuniharu Suzuki, Akira Ikeuchi, Yoshihide Majima, Hirotsugu Iijima, Kenichi Kasai, Takatoshi Itagaki
  • Publication number: 20110274952
    Abstract: A fuel gauge circuit detects a residual quantity of a battery 1 and is disposed on a substrate 20 together with a protection circuit 40 which protects charging/discharging of the battery 1. The fuel gauge circuit includes a voltage monitor terminal T1 disposed on a side facing a positive power-supply terminal 21 of the substrate and connected to each of the positive power-supply terminal 21 and a voltage sensor 31 disposed in the circuit, a voltage through terminal T6 disposed on a side facing the protection circuit, opposite to the side facing the positive power-supply terminal 21, and connected to a voltage monitor terminal T11 of the protection circuit, and a wiring 32 disposed within the circuit to connect the voltage monitor terminal T1 of the fuel gauge circuit to the voltage through terminal T11.
    Type: Application
    Filed: January 12, 2010
    Publication date: November 10, 2011
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Takatoshi Itagaki, Akira Ikeuchi, Makio Abe
  • Publication number: 20110254131
    Abstract: In a semiconductor integrated circuit device including a digital circuit region in which a digital circuit is formed, and an analog circuit region in which an analog circuit is formed, the analog circuit region is separated into an active element region in which an active element of the analog circuit is formed, and a resistive and capacitive element region in which a resistor or a capacitor of the analog circuit is formed, the resistive and capacitive element region is arranged in a region adjacent to the digital circuit region, and the active element region is arranged in a region separated from the digital circuit region.
    Type: Application
    Filed: October 30, 2009
    Publication date: October 20, 2011
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Takatoshi Itagaki
  • Patent number: 8036717
    Abstract: Disclosed is a mobile terminal incorporating a battery pack utilized as power supply. The mobile terminal includes a positive terminal connected to a battery pack positive electrode, a negative terminal connected to a battery pack negative electrode, a data communication terminal communicating with a circuit in the battery pack, a charge control unit controlling charging of the battery pack via the positive terminal, and a reference voltage output unit outputting reference voltage. The terminal further includes a dividing resistor and a thermistor connected in series between the reference voltage output unit and the negative terminal, a temperature detector detecting temperature, and stopping charging of the battery pack based on the detected temperature, and a switching device controlling the voltage at the predetermined portion.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: October 11, 2011
    Assignees: Sony Ericsson Mobile Communications Japan, Inc, Mitsumi Electric Co., Ltd.
    Inventors: Katsuya Suzuki, Kuniharu Suzuki, Akira Ikeuchi, Yoshihide Majima, Hirotsugu Iijima, Kenichi Kasai, Takatoshi Itagaki
  • Patent number: 7576617
    Abstract: A semiconductor integrated circuit device is disclosed that includes a signal processing unit having a nonvolatile memory and a detection unit; plural oscillation sources outputting plural oscillation signals; a selection control unit that selects one of the oscillation signals output by the oscillation sources according to a selection signal, and controls a transfer timing for transferring circuit setting information from the nonvolatile memory to the detection unit and an operations start timing for starting signal processing operations of the signal processing unit according to the selected oscillation signal.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: August 18, 2009
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Takatoshi Itagaki, Makio Abe
  • Publication number: 20090150101
    Abstract: A semiconductor integrated circuit device for calculating a remaining battery capacity of a battery from which the semiconductor integrated circuit device receives power supply, and reporting the calculated remaining battery capacity to a battery-using appliance which also receives power supply from the battery includes a clock generating unit configured to generate a first clock signal and a second clock signal having a higher frequency than a frequency of the first clock signal; a selecting unit configured to select one of the first clock signal and the second clock signal and output the selected clock signal; a calculating unit configured to operate according to the selected clock signal to calculate the remaining battery capacity; and a communicating unit configured to operate according to the selected clock to report the calculated remaining battery capacity to the battery-using appliance.
    Type: Application
    Filed: November 24, 2008
    Publication date: June 11, 2009
    Inventors: Takatoshi Itagaki, Makio Abe
  • Patent number: 7545653
    Abstract: A disclosed semiconductor integrated circuit device includes a digital circuit and an analog circuit formed on one semiconductor substrate; a guard band configured to prevent noise generated in the digital circuit from being transmitted to the analog circuit; a first power supply terminal configured to supply a power-supply voltage to the analog circuit; a first ground terminal configured to supply a ground potential to the analog circuit; a second power supply terminal configured to supply the power-supply voltage to the digital circuit; a second ground terminal configured to supply the ground potential to the digital circuit; and a filter circuit positioned between the second power supply terminal, the second ground terminal, and the digital circuit and configured to remove the noise transmitted from the digital circuit.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: June 9, 2009
    Assignee: Mitsumi Electric Co., Ltd.
    Inventor: Takatoshi Itagaki
  • Publication number: 20090124299
    Abstract: Disclosed is a mobile terminal incorporating a battery pack utilized as power supply. The mobile terminal includes a positive terminal connected to a battery pack positive electrode, a negative terminal connected to a battery pack negative electrode, a data communication terminal communicating with a circuit in the battery pack, a charge control unit controlling charging of the battery pack via the positive terminal, and a reference voltage output unit outputting reference voltage. The terminal further includes a dividing resistor and a thermistor connected in series between the reference voltage output unit and the negative terminal, a temperature detector detecting temperature, and stopping charging of the battery pack based on the detected temperature, and a switching device controlling the voltage at the predetermined portion.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 14, 2009
    Applicants: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC., MITSUMI ELECTRIC CO., LTD.
    Inventors: Katsuya SUZUKI, Kuniharu SUZUKI, Akira IKEUCHI, Yoshihide MAJIMA, Hirotsugu IIJIMA, Kenichi KASAI, Takatoshi ITAGAKI
  • Publication number: 20090124298
    Abstract: Disclosed is a mobile phone terminal with a battery pack containing a retraceable battery as power supply, and transmitting and receiving radio-signals to and from a mobile phone system base transceiver station. The mobile phone terminal includes a data communication terminal communicating data with the battery pack, an intermittent receiving processor periodically carrying out intermittent receiving processing via the base transceiver station when the mobile phone terminal is in a standby operation, and a battery status determining unit transmitting, while the intermittent receiving processor is carrying out intermittent receiving processing, an activating signal to the battery pack via the data communication terminal and reading battery status data from the activated battery pack.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 14, 2009
    Applicants: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC., MITSUMI ELECTRIC CO., LTD.
    Inventors: Katsuya Suzuki, Kuniharu Suzuki, Akira Ikeuchi, Yoshihide Majima, Hirotsugu Iijima, Kenichi Kasai, Takatoshi Itagaki
  • Patent number: 7269445
    Abstract: A user identification module (UIM) 12 having a plurality of storage areas that may be built into or mounted in a mobile terminal 11. A contents server 19, upon receipt of a distribution request from the mobile terminal 11, may distribute a program or data used at the time of program execution through a network including a radio network. The program may be encrypted twice by the contents server 19. During distribution, the program may be decrypted a first time by a distribution management server 16. The program may be decrypted a second time by the UIM 12. The decrypted program and the data may be stored in one of a plurality of separate and independently operated memory blocks of the UIM 12 and not through the control unit of the mobile terminal 11. The program may be enabled for execution by the UIM 12 at the direction of the distribution management server 16.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: September 11, 2007
    Assignee: NTT DoCoMo Inc.
    Inventors: Takeshi Natsuno, Takatoshi Itagaki, Atsushi Moriguchi
  • Publication number: 20070205830
    Abstract: A semiconductor integrated circuit device is disclosed that includes a signal processing unit having a nonvolatile memory and a detection unit; plural oscillation sources outputting plural oscillation signals; a selection control unit that selects one of the oscillation signals output by the oscillation sources according to a selection signal, and controls a transfer timing for transferring circuit setting information from the nonvolatile memory to the detection unit and an operations start timing for starting signal processing operations of the signal processing unit according to the selected oscillation signal.
    Type: Application
    Filed: February 13, 2007
    Publication date: September 6, 2007
    Inventors: Takatoshi Itagaki, Makio Abe