Sanyo Semiconductor Co., Ltd.

Sanyo Electric Co., Ltd.

Semiconductor Components Industries, LLC

Yasuhisa Yamada

Yuuki Tashita

Yasunori Nagata

Akira Hirakawa

Masayuki Saito

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.

Image stabilization control circuit and imaging device having image stabilization control circuit

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.

In an image stabilization control circuit of an image-capturing device, a gyro-equalizer () is used to integrate an angular velocity signal corresponding to vibration, and determine a required magnitude of displacement of a lens. The gyro-equalizer () integrates the angular velocity signal from a gyro-sensor () using an integration circuit () (LPF), and converts the result into an angular signal. A direct-current component of the angular signal is removed using a centering circuit () (HPF). Excessive phase delay of the angular signal on a high-frequency side caused by a phase characteristic of the gyro-sensor () is compensated by a phase lead compensation circuit () composed of a high-boost filter, and the phase delay of the angular signal with respect to the angular velocity signal is brought nearer to 90&#xb0; by an integration process.

Image stabilization control circuit

A image stabilization control circuit for an image capturing device, wherein a gyro-equalizer () integrates an angular velocity signal from a gyro-sensor () in an integration circuit (). The integration circuit () 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 (), 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.

A sealed battery has an outer can having an opening and functioning as an electrode terminal, a sealing member fitted in the opening of the outer can and functioning as an electrode terminal which is different in polarity from the outer can, and a spiral-wound electrode assembly contained in the outer can. The spiral-wound electrode assembly includes a positive electrode, a negative electrode and a separator wound together spirally, in which the electrodes are separated by the separator and the outermost coil of the separator forms the outer circumferential face of the spiral-wound electrode assembly. A substrate included in the positive or negative electrode which is adjacent to the outermost coil of the separator has an exposed portion, which projects in the axial direction of the spiral-wound electrode assembly beyond the outermost coil of the separator and is in direct contact with the inner face of the outer can.

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Ame-gun, Japan

Yasuhisa Yamada