Abstract: An imaging device includes an angular velocity sensor (11), which outputs a blurring signal, a high-pass filter circuit unit (12), which eliminates a direct current component in accordance with a first time constant, and which outputs a fluctuation portion with respect to a reference voltage as an angular velocity signal, an analog switch ASW (1), which cause a charge that is accumulated within the high-pass filter circuit unit (12) to discharge according to a second time constant, a computation unit (15), which is for performing a computation in order to correct a blurring of an image in accordance with the angular velocity signal, and a detection circuit unit (15D), which, in order to detect a change over time of the angular velocity of the camera body, samples the angular velocity signal on a per fixed time interval basis, obtains a derivative in accordance with a value thus sampled of the angular velocity signal, and detects a change over time in a size of the derivative thus obtained, wherein the time co

Abstract: An image blur correction device includes: a movable frame which is equipped with a lens or an imaging element and has a guide part; a fixed frame having a guide supporting part which movably supports the movable frame by coming into contact with the guide part; and a drive mechanism which drives the movable frame for correcting image blur by moving the movable frame relative to the fixed frame. The fixed frame has magnetic bodies, and the movable frame has urging magnets at positions corresponding to the magnetic bodies. Specifically, the urging magnets use attractive force between the magnets and the magnetic bodies, so as to urge the movable frame in a direction in which the guide part and the guide supporting part come into contact with each other.

Abstract: An image blur correction device includes: a movable frame which is equipped with a lens or an imaging element and has a guide part; a fixed frame having a guide supporting part which movably supports the movable frame by coming into contact with the guide part; and a drive mechanism which drives the movable frame for correcting image blur by moving the movable frame relative to the fixed frame. The fixed frame has magnetic bodies, and the movable frame has urging magnets at positions corresponding to the magnetic bodies. Specifically, the urging magnets use attractive force between the magnets and the magnetic bodies, so as to urge the movable frame in a direction in which the guide part and the guide supporting part come into contact with each other.

Abstract: An image pickup apparatus includes a gyro sensor 1240 that detects camera shakes, a feed forward value is calculated by multiplying a first coefficient c1 to an output value of the gyro sensor 1240 when the output value of the gyro sensor 1240 is less than a first predetermined value, another feed forward value is calculated by multiplying a second coefficient c2 smaller than the first coefficient c1 to an output value of the gyro sensor 1240 when the output value of the gyro sensor 1240 is greater than or equal to the first predetermined value, each of the products is respectively added by an addition device to an output value of a drive signal.

Abstract: An image blur correction device includes: a movable frame which is equipped with a lens or an imaging element and has a guide part; a fixed frame having a guide supporting part which movably supports the movable frame by coming into contact with the guide part; and a drive mechanism which drives the movable frame for correcting image blur by moving the movable frame relative to the fixed frame. The fixed frame has magnetic bodies, and the movable frame has urging magnets at positions corresponding to the magnetic bodies. Specifically, the urging magnets use attractive force between the magnets and the magnetic bodies, so as to urge the movable frame in a direction in which the guide part and the guide supporting part come into contact with each other.

Abstract: An imaging apparatus includes a barrel unit having a photographic lens, an image pickup device configured to receive light through the photographic lens to capture a subject image, a movable unit configured to movably support the image pickup device in a direction perpendicular to a light-receiving axis of the subject image, a processing unit configured to process signals from the image pickup device, a flexible board configured to connect the image pickup device to the processing unit, and a positioning unit configured to position the flexible board.

Abstract: A photographing apparatus which performs an image-blur suppression properly even through a computation device disposed in a main body of the photographing apparatus and a photographing element movable along an XY plane are electrically connected is provided according to the present invention. The image-blur suppression mechanism comprises a flexible base plate 20 including a second linear part 210 and a fourth linear part 212 which are plastically deformed along Z axial direction, meeting such a condition that an intersection line between a plane containing the second linear part 210 and the XY plane and an intersection line between a plane containing the fourth linear part 212 and the XY plane are intersected with XY axes, respectively.

Abstract: An image pickup apparatus includes a gyro sensor 1240 that detects camera shakes, a feed forward value is calculated by multiplying a first coefficient c1 to an output value of the gyro sensor 1240 when the output value of the gyro sensor 1240 is less than a first predetermined value, another feed forward value is calculated by multiplying a second coefficient c2 smaller than the first coefficient c1 to an output value of the gyro sensor 1240 when the output value of the gyro sensor 1240 is greater than or equal to the first predetermined value, each of the products is respectively added by an addition device to an output value of a drive signal

Abstract: The magnitude of magnetic attraction generated between an electromagnetic coil and a magnetic metal member (or an amount of electric current flowed to the electromagnetic coil) is controlled depending on a direction of acceleration (acceleration caused by the gravity (a gravitational acceleration) and acceleration caused by shake (shake acceleration)) working on an imaging apparatus. This magnetic attraction moves a second slider (including a CCD and a first slider) as a whole toward the electromagnetic coil. This movement brings two inclined surfaces (or fourth and fifth surfaces) of a shaft hole 10d into contact with a second guide shaft with no gap being interposed in between, and keeps the this contact condition.

Abstract: An imaging device includes an angular velocity sensor (11), which outputs a blurring signal, a high-pass filter circuit unit (12), which eliminates a direct current component in accordance with a first time constant, and which outputs a fluctuation portion with respect to a reference voltage as an angular velocity signal, an analog switch ASW (1), which cause a charge that is accumulated within the high-pass filter circuit unit (12) to discharge according to a second time constant, a computation unit (15), which is for performing a computation in order to correct a blurring of an image in accordance with the angular velocity signal, and a detection circuit unit (15D), which, in order to detect a change over time of the angular velocity of the camera body, samples the angular velocity signal on a per fixed time interval basis, obtains a derivative in accordance with a value thus sampled of the angular velocity signal, and detects a change over time in a size of the derivative thus obtained, wherein the time co

Abstract: A pickup drive unit is provided including at least a rack portion provided thereon with gear teeth to be engaged with grooves of a lead screw; a plate-shaped connecting portion made of a flexible material for connecting the rack portion to a fixing portion tightened to a pickup and for supporting the rack portion in a cantilever fashion to be deformable in a direction of either bringing close to, or removing from, the lead screw; and a compressed coil spring for applying a force pressing the rack portion against the lead screw; in which the distance on the plate-shaped connecting portion from an end on the side of the fixing portion to the contact portion between the gear teeth and the lead screw is made smaller than the distance from an end on the side of said fixing portion to another end on the side of the rack portion.

Abstract: Prior to recording/reproducing information to/from an optical disk rotationally driven by a spindle motor, an optical pickup is moved to a plurality of measuring positions set beforehand in a radial direction of the optical disk. A relative tilt between the optical disk and the optical pickup is detected with the spindle motor being rotated so that a linear velocity at each of the measuring positions equals a linear velocity upon actually recording or reproducing the information thereat. The tilt detected at each of the measuring positions is stored as tilt detection data corresponding to each of the measuring positions.

Abstract: In a tilt correction method, first information about a specific inclination of an object lens is acquired in response to an access request to an information recording medium. The specific inclination is obtained when the signal characteristic of a push-pull signal becomes a prescribed level in or near a target access area. Then, second information about the optimum inclination of the object lens is acquired for the target access area, based on the first information and tilt difference information representing a difference between a first inclination and a second inclination of the object lens defined in advance in a particular area on the information recording medium. The first inclination corresponds to an optimum reproduced signal from the particular area, and the second inclination is obtained when the signal characteristic of the push-pull signal from the particular area becomes the prescribed level. Finally, tilt correction information is estimated from the second information.

Abstract: A disk rotation device rotationally driving a disk includes a housing body, a conveyance body installed in the housing body so as to be capable to move between a first position positioned inside of the housing, the first position being where the disk is rotation driven, and a second position positioned outside of the housing body, the second position being where the disk is put on or taken off, a rotation mechanism provided in the conveyance body and having a rotational part which is rotationally driven by a motor and at which rotational part the disk is set, and a braking device which brakes by applying a friction force to the rotational part in a case where the conveyance body is situated at a side of the second position closer than a designated standard position between the first position and the second position, and which turns off application of the friction force in a case where the conveyance body is situated at a side of the first position closer than the standard position.

Abstract: A photographing apparatus which performs an image-blur suppression properly even through a computation device disposed in a main body of the photographing apparatus and a photographing element movable along an XY plane are electrically connected is provided according to the present invention. The image-blur suppression mechanism comprises a flexible base plate 20 including a second linear part 210 and a fourth linear part 212 which are plastically deformed along Z axial direction, meeting such a condition that an intersection line between a plane containing the second linear part 210 and the XY plane and an intersection line between a plane containing the fourth linear part 212 and the XY plane are intersected with XY axes, respectively.

Abstract: In a state in which an optical disk having a warping amount equal to or smaller than a predetermined amount is attached to a spindle motor, an output of tilt detection result is stored as a reference tilt value in a memory. At this time, a control signal corresponding to a driving inclining amount in which inclining the objective lens by the driving inclining amount minimizes the inclination of the objective lens from the attached optical disk is stored as a reference control value in the memory. An CPU a multiplies difference between a detection result of the tilt detection and the reference tilt value by a control constant, and adds the reference control value to the multiplied difference, and provides the thus-obtained control signal to a tilt driving circuit.

Abstract: An optical disk device and a tilt correction method capable of high precision tilt correction with a smaller number of measurement positions are provided. Prior to data recording and reproduction, a number of measurement positions are set in the radial direction on an optical disk with intervals between two adjacent measurement positions shorter and shorter from the inner region to the peripheral region of the optical disk. The tilt at each of the measurement positions is measured, and the resulting tilt data are stored in a memory. The tilt data are used for making tilt corrections when recording or reproducing data on the optical disk.

Abstract: A disk rotation device rotationally driving a disk includes a housing body, a conveyance body installed in the housing body so as to be capable to move between a first position positioned inside of the housing, the first position being where the disk is rotation driven, and a second position positioned outside of the housing body, the second position being where the disk is put on or taken off, a rotation mechanism provided in the conveyance body and having a rotational part which is rotationally driven by a motor and at which rotational part the disk is set, and a braking device which brakes by applying a friction force to the rotational part in a case where the conveyance body is situated at a side of the second position closer than a designated standard position between the first position and the second position, and which turns off application of the friction force in a case where the conveyance body is situated at a side of the first position closer than the standard position.

Abstract: In a tilt correction method, first information about a specific inclination of an object lens is acquired in response to an access request to an information recording medium. The specific inclination is obtained when the signal characteristic of a push-pull signal becomes a prescribed level in or near a target access area. Then, second information about the optimum inclination of the object lens is acquired for the target access area, based on the first information and tilt difference information representing a difference between a first inclination and a second inclination of the object lens defined in advance in a particular area on the information recording medium. The first inclination corresponds to an optimum reproduced signal from the particular area, and the second inclination is obtained when the signal characteristic of the push-pull signal from the particular area becomes the prescribed level. Finally, tilt correction information is estimated from the second information.

Abstract: An optical disk device and a tilt correction method capable of high precision tilt correction with a smaller number of measurement positions are provided. Prior to data recording and reproduction, a number of measurement positions are set in the radial direction on an optical disk with intervals between two adjacent measurement positions shorter and shorter from the inner region to the peripheral region of the optical disk. The tilt at each of the measurement positions is measured, and the resulting tilt data are stored in a memory. The tilt data are used for making tilt corrections when recording or reproducing data on the optical disk.