Patents by Inventor Yuuki Tashita

Yuuki Tashita 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: 8570385
    Abstract: A image stabilization control circuit is provided which comprises at least one analog-to-digital converter circuit which converts an output signal of a vibration detection element which detects vibration of an imaging device and an output signal of a position detection element which detects a position of an optical component, into digital signals, and a logic circuit which generates a control signal which drives the optical component based on the output signal of the vibration detection element which is digitized by the analog-to-digital converter circuit and the output signal of the position detection element which is digitized by the analog-to-digital converter circuit, wherein an abnormality of the vibration detection element is judged based on an amplitude of the output signal from the vibration detection element which is converted into the digital signal by the analog-to-digital converter circuit.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: October 29, 2013
    Assignees: Sanyo Semiconductor Co., Ltd., Semiconductor Components Industries, LLC
    Inventors: Yasuhisa Yamada, Yuuki Tashita
  • Patent number: 8400516
    Abstract: A image stabilization control circuit is provided that comprises at least one analog-to-digital converter circuit that converts an output signal of a vibration detection element which detects vibration of an imaging device, and an output signal of a position detection element which detects a position of an optical component or an imaging element, into digital signals, and a logic circuit that generates a control signal which drives the optical component or the imaging element, based on the output signal of the vibration detection element which is digitized by the analog-to-digital converter circuit and the output signal of the position detection element which is digitized by the analog-to-digital converter circuit, wherein an offset value and an amplitude for the output signal of the position detection element are adjusted.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: March 19, 2013
    Assignees: Sanyo Semiconductor Co., Ltd., Semiconductor Components Industries, LLC
    Inventors: Yasuhisa Yamada, Yuuki Tashita
  • Patent number: 7760448
    Abstract: A image stabilization control circuit for an image capturing device, wherein a gyro-equalizer (24) integrates an angular velocity signal from a gyro-sensor (12) in an integration circuit (46). The integration circuit (46) is composed of a low-boost filter (LBF), and a phase delay in a target compensation region is set to a value appropriate for an integration process. Furthermore, a characteristic whereby the LBF reduces the phase delay at higher frequencies is used, compensation is applied to the excess phase delay of the angular signal in the high-frequency region brought about by the effect of the phase delay generated in the high-frequency region by the output signal of the gyro-sensor (12), and the phase delay in the high-frequency region is brought nearer to 90 degrees. This allows the accuracy of the process for determining the required displacement magnitude of a lens to be increased.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: July 20, 2010
    Assignees: Sanyo Electric Co., Ltd., Sanyo Semiconductor Co., Ltd.
    Inventors: Yasunori Nagata, Yasuhisa Yamada, Yuuki Tashita
  • Publication number: 20090160962
    Abstract: A vibration prevention control circuit is provided that comprises at least one analog-to-digital converter circuit which samples and converts an output signal of a vibration detection element which detects vibration of an imaging device and an output signal of a position detection element which detects a position of an optical component, into digital signals, a vibration component processor that processes the output signal of the vibration detection element which is digitized by the analog-to-digital converter circuit, a down-sampling unit that down-samples the output signal of the vibration detection element which is processed by the vibration component processor, and a servo circuit that generates a control signal which drives the optical component, based on the output signal of the vibration detection element which is output from the down-sampling unit and the output signal of the position detection element which is digitized by the analog-to-digital converter circuit.
    Type: Application
    Filed: December 24, 2008
    Publication date: June 25, 2009
    Applicants: SANYO ELECTRIC CO., LTD., SANYO SEMICONDUCTOR CO., LTD.
    Inventors: Yoshihisa TABUCHI, Yuuki TASHITA, Yasuhisa YAMADA
  • Publication number: 20090160954
    Abstract: A image stabilization control circuit is provided which comprises at least one analog-to-digital converter circuit which converts an output signal of a vibration detection element which detects vibration of an imaging device and an output signal of a position detection element which detects a position of an optical component, into digital signals, and a logic circuit which generates a control signal which drives the optical component based on the output signal of the vibration detection element which is digitized by the analog-to-digital converter circuit and the output signal of the position detection element which is digitized by the analog-to-digital converter circuit, wherein an abnormality of the vibration detection element is judged based on an amplitude of the output signal from the vibration detection element which is converted into the digital signal by the analog-to-digital converter circuit.
    Type: Application
    Filed: December 3, 2008
    Publication date: June 25, 2009
    Applicants: SANYO ELECTRIC CO., LTD., SANYO SEMICONDUCTOR CO., LTD.
    Inventors: Yasuhisa YAMADA, Yuuki TASHITA
  • Publication number: 20090161237
    Abstract: A image stabilization control circuit for an image capturing device, wherein a gyro-equalizer (24) integrates an angular velocity signal from a gyro-sensor (12) in an integration circuit (46). The integration circuit (46) is composed of a low-boost filter (LBF), and a phase delay in a target compensation region is set to a value appropriate for an integration process. Furthermore, a characteristic whereby the LBF reduces the phase delay at higher frequencies is used, compensation is applied to the excess phase delay of the angular signal in the high-frequency region brought about by the effect of the phase delay generated in the high-frequency region by the output signal of the gyro-sensor (12), and the phase delay in the high-frequency region is brought nearer to 90 degrees. This allows the accuracy of the process for determining the required displacement magnitude of a lens to be increased.
    Type: Application
    Filed: December 8, 2008
    Publication date: June 25, 2009
    Applicants: Sanyo Electric Co., Ltd., Sanyo Semiconductor Co., Ltd.
    Inventors: Yasunori Nagata, Yasuhisa Yamada, Yuuki Tashita
  • Publication number: 20090160958
    Abstract: A image stabilization control circuit is provided that comprises at least one analog-to-digital converter circuit that converts an output signal of a vibration detection element which detects vibration of an imaging device, and an output signal of a position detection element which detects a position of an optical component or an imaging element, into digital signals, and a logic circuit that generates a control signal which drives the optical component or the imaging element, based on the output signal of the vibration detection element which is digitized by the analog-to-digital converter circuit and the output signal of the position detection element which is digitized by the analog-to-digital converter circuit, wherein an offset value and an amplitude for the output signal of the position detection element are adjusted.
    Type: Application
    Filed: December 3, 2008
    Publication date: June 25, 2009
    Applicants: SANYO ELECTRIC CO., LTD., SANYO SEMICONDUCTOR CO., LTD.
    Inventors: Yasuhisa Yamada, Yuuki Tashita