Patents by Inventor KUDO RYOTARO

KUDO RYOTARO 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).

  • Fuel gauge system for measuring the amount of current in battery and portable electronic device including the same
    Patent number: 10921377
    Abstract: A fuel gauge system for measuring the amount of current in a battery is provided. The fuel gauge system includes a first resistive element connected in series to the battery, a second resistive element connected in series to the first resistive element, a first switch connected in parallel to the second resistive element to control a current flowing in the second resistive element, a second switch connected in series to the second resistive element to control the current flowing in the second resistive element, a controller configured to output a first switching signal to the first switch and output a second switching signal to the second switch, and a fuel gauge circuit configured to measure a battery current flowing in the first resistive element and the second resistive element.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: February 16, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kudo Ryotaro, Dong Jin Keum, Byung Chul Jeon, Jin Sub Choi
  • FUEL GAUGE SYSTEM FOR MEASURING THE AMOUNT OF CURRENT IN BATTERY AND PORTABLE ELECTRONIC DEVICE INCLUDING THE SAME
    Publication number: 20190049519
    Abstract: A fuel gauge system for measuring the amount of current in a battery is provided. The fuel gauge system includes a first resistive element connected in series to the battery, a second resistive element connected in series to the first resistive element, a first switch connected in parallel to the second resistive element to control a current flowing in the second resistive element, a second switch connected in series to the second resistive element to control the current flowing in the second resistive element, a controller configured to output a first switching signal to the first switch and output a second switching signal to the second switch, and a fuel gauge circuit configured to measure a battery current flowing in the first resistive element and the second resistive element.
    Type: Application
    Filed: October 15, 2018
    Publication date: February 14, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kudo Ryotaro, Dong Jin Keum, Byung Chul Jeon, Jin Sub Choi
  • Fuel gauge system for measuring the amount of current in battery and portable electronic device including the same
    Patent number: 10107862
    Abstract: A fuel gauge system for measuring the amount of current in a battery is provided. The fuel gauge system includes a first resistive element connected in series to the battery, a second resistive element connected in series to the first resistive element, a first switch connected in parallel to the second resistive element to control a current flowing in the second resistive element, a second switch connected in series to the second resistive element to control the current flowing in the second resistive element, a controller configured to output a first switching signal to the first switch and output a second switching signal to the second switch, and a fuel gauge circuit configured to measure a battery current flowing in the first resistive element and the second resistive element.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: October 23, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kudo Ryotaro, Dong Jin Keum, Byung Chul Jeon, Jin Sub Choi
  • FUEL GAUGE SYSTEM FOR MEASURING THE AMOUNT OF CURRENT IN BATTERY AND PORTABLE ELECTRONIC DEVICE INCLUDING THE SAME
    Publication number: 20170131358
    Abstract: A fuel gauge system for measuring the amount of current in a battery is provided. The fuel gauge system includes a first resistive element connected in series to the battery, a second resistive element connected in series to the first resistive element, a first switch connected in parallel to the second resistive element to control a current flowing in the second resistive element, a second switch connected in series to the second resistive element to control the current flowing in the second resistive element, a controller configured to output a first switching signal to the first switch and output a second switching signal to the second switch, and a fuel gauge circuit configured to measure a battery current flowing in the first resistive element and the second resistive element.
    Type: Application
    Filed: October 6, 2016
    Publication date: May 11, 2017
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kudo RYOTARO, Dong Jin KEUM, Byung Chul JEON, Jin Sub CHOI
  • DC-DC converter and electronic system including the same
    Patent number: 9548661
    Abstract: A DC-DC converter is provided. The DC-DC converter includes at least one converter circuit configured to include an inductor and to supply a current to a load through the inductor; and a controller configured to sense the current to generate a sensed signal, to sample and hold the sensed signal at a predetermined sampling time to detect an average current of the inductor, and to control an operation of the at least one converter circuit according to the average current. The sampling time is set to a time in a period while the inductor current is less than a peak and greater than a valley.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: January 17, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kudo Ryotaro, Gwang Yol Noh, Hwa Yeal Yu
  • DC-DC CONVERTER AND ELECTRONIC SYSTEM INCLUDING THE SAME
    Publication number: 20150303808
    Abstract: A DC-DC converter is provided. The DC-DC converter includes at least one converter circuit configured to include an inductor and to supply a current to a load through the inductor; and a controller configured to sense the current to generate a sensed signal, to sample and hold the sensed signal at a predetermined sampling time to detect an average current of the inductor, and to control an operation of the at least one converter circuit according to the average current. The sampling time is set to a time in a period while the inductor current is less than a peak and greater than a valley.
    Type: Application
    Filed: April 15, 2015
    Publication date: October 22, 2015
    Inventors: KUDO RYOTARO, GWANG YOL NOH, HWA YEAL YU