Patents by Inventor Ryohta Ueba

Ryohta Ueba 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: 10992823
    Abstract: An information processing device includes control circuitry. The control circuitry is configured to store, in a first memory, record information formed each time a predetermined event occurs in a device and perform an update process of successively updating an old piece of record information with a new piece of record information in the record information stored in the first memory; transmit the record information stored in the first memory via a first signal line; transfer communication abnormality record information stored in the first memory to a second memory, which is configured not to update record information, and store the communication abnormality record information in the second memory when a communication abnormality signal of the first signal line is supplied via a second signal line; and transmit the communication abnormality record information stored in the second memory via the first signal line when communication of the first signal line is restored.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: April 27, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryohta Ueba, Sumihiro Inokuchi, Yuki Sunagawa, Kenichi Yamada, Tasuku Kohara, Xiaoya Sun, Ryotaro Konno
  • Patent number: 10955374
    Abstract: A characteristic detector includes two electrodes facing each other to form a passage through which a medium passes, a cover disposed between the two electrodes, a current generator to supply a current between the two electrodes, a capacitance gauge to measure a capacitance generated between the two electrodes, and circuitry. The two electrodes have a shape or an arrangement in which at least two points on a leading end of the medium enter the passage with a time lag. The cover covers one of the two electrodes in connection with a size of the medium. The capacitance gauge detects the size of the medium based on the measured capacitance. The circuitry calculates a characteristic of the medium based on the capacitance measured by the capacitance gauge and the size of the medium detected by the capacitance gauge.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: March 23, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Yohei Kushida, Kyohei Matsumura, Ryuuichi Satoh, Sumihiro Inokuchi, Tomohide Kondoh, Ryohta Ueba
  • Patent number: 10826390
    Abstract: A power supply includes a transformer configured to transform a direct current (DC) voltage and supply an output voltage to a load. The power supply further includes circuitry configured to control the output voltage from the transformer, compare one of an average per unit time of the output voltage and an amplitude value of the output voltage with a threshold in a failure-free state when performing droop control of the output voltage, and determine whether a failure has occurred in at least one of the load and the transformer.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: November 3, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryohta Ueba, Keita Maejima
  • Publication number: 20200259963
    Abstract: An information processing device includes control circuitry. The control circuitry is configured to store, in a first memory, record information formed each time a predetermined event occurs in a device and perform an update process of successively updating an old piece of record information with a new piece of record information in the record information stored in the first memory; transmit the record information stored in the first memory via a first signal line; transfer communication abnormality record information stored in the first memory to a second memory, which is configured not to update record information, and store the communication abnormality record information in the second memory when a communication abnormality signal of the first signal line is supplied via a second signal line; and transmit the communication abnormality record information stored in the second memory via the first signal line when communication of the first signal line is restored.
    Type: Application
    Filed: February 11, 2020
    Publication date: August 13, 2020
    Inventors: Ryohta UEBA, Sumihiro INOKUCHI, Yuki SUNAGAWA, Kenichi YAMADA, Tasuku KOHARA, Xiaoya SUN, Ryotaro KONNO
  • Publication number: 20190212289
    Abstract: A characteristic detector includes two electrodes facing each other to form a passage through which a medium passes, a cover disposed between the two electrodes, a current generator to supply a current between the two electrodes, a capacitance gauge to measure a capacitance generated between the two electrodes, and circuitry. The two electrodes have a shape or an arrangement in which at least two points on a leading end of the medium enter the passage with a time lag. The cover covers one of the two electrodes in connection with a size of the medium. The capacitance gauge detects the size of the medium based on the measured capacitance. The circuitry calculates a characteristic of the medium based on the capacitance measured by the capacitance gauge and the size of the medium detected by the capacitance gauge.
    Type: Application
    Filed: October 18, 2018
    Publication date: July 11, 2019
    Inventors: Yohei Kushida, Kyohei Matsumura, Ryuuichi Satoh, Sumihiro Inokuchi, Tomohide Kondoh, Ryohta Ueba
  • Publication number: 20190199211
    Abstract: A power supply includes a transformer configured to transform a direct current (DC) voltage and supply an output voltage to a load. The power supply further includes circuitry configured to control the output voltage from the transformer, compare one of an average per unit time of the output voltage and an amplitude value of the output voltage with a threshold in a failure-free state when performing droop control of the output voltage, and determine whether a failure has occurred in at least one of the load and the transformer.
    Type: Application
    Filed: November 19, 2018
    Publication date: June 27, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Ryohta Ueba, Keita Maejima