Abstract: According to one embodiment, a magnetic disk device includes a disk having a first sector including first servo data, first user data, and first correction information used to correct a data error, a head that writes data to the disk and that reads data from the disk, and a controller that changes, according to a first defect length of a defect generated in the first sector in a circumferential direction of the disk, a first sector length of the first sector in the circumferential direction.

Abstract: According to one embodiment, a magnetic disk device includes a disk having a first sector including first servo data, first user data, and first correction information used to correct a data error, a head that writes data to the disk and that reads data from the disk, and a controller that changes, according to a first defect length of a defect generated in the first sector in a circumferential direction of the disk, a first sector length of the first sector in the circumferential direction.

Abstract: An inner peripheral water entry reducing portion and an outer peripheral water entry reducing portion are provided. The inner peripheral water entry reducing portion includes an inner peripheral wall portion surrounding an output shaft. The outer peripheral water entry reducing portion includes an outer peripheral wall portion surrounding the inner peripheral wall portion. At least one inner peripheral opening of the inner peripheral water entry reducing portion and at least one outer peripheral opening of the outer peripheral water entry reducing portion are prevented from overlapping with each other in a circumferential direction of the output shaft.

Abstract: A round bar output shaft is provided and fitted into an anti-slip member so as to rotate integrally with the anti-slip member. A recess is formed on the anti-slip member to make the stress generated on the anti-slip member by the output shaft fitted in non-uniform around a periphery of the anti-slip member. While the anti-slip member is being molded, a weld line is formed in a low-stress-generating portion.

Abstract: A fan includes a cylindrical anti-slip member that is rotatable integrally with a fan body. The anti-slip member is a molded product of a resin material with higher mechanical strength than the resin material of the fan body. A round bar output shaft is fitted into the anti-slip member. Recesses are formed on the outer peripheral surface of the anti-slip member.

Abstract: An inner peripheral water entry reducing portion and an outer peripheral water entry reducing portion are provided. The inner peripheral water entry reducing portion includes an inner peripheral wall portion surrounding an output shaft. The outer peripheral water entry reducing portion includes an outer peripheral wall portion surrounding the inner peripheral wall portion. At least one inner peripheral opening of the inner peripheral water entry reducing portion and at least one outer peripheral opening of the outer peripheral water entry reducing portion are prevented from overlapping with each other in a circumferential direction of the output shaft.

Abstract: A round bar output shaft is provided and fitted into an anti-slip member so as to rotate integrally with the anti-slip member. A recess is formed on the anti-slip member to make the stress generated on the anti-slip member by the output shaft fitted in non-uniform around a periphery of the anti-slip member. While the anti-slip member is being molded, a weld line is formed in a low-stress-generating portion.

Abstract: A fan includes a cylindrical anti-slip member that is rotatable integrally with a fan body. The anti-slip member is a molded product of a resin material with higher mechanical strength than the resin material of the fan body. A round bar output shaft is fitted into the anti-slip member. Recesses are formed on the outer peripheral surface of the anti-slip member.

Abstract: An object detecting system includes an imaging device disposed on a vehicle and a controller that receives a two-dimensional image, which represents a scene ahead of the vehicle, from the imaging device. The controller includes a feature extraction unit, a motion-information calculator, a coordinate transformation unit, and an object-attribute determination unit. The feature extraction unit reads the image and extracts the edges of a feature in the image. The motion-information calculator evaluates the feature in the image and outputs feature velocity information for each image pixel that shows the edges of the feature. The coordinate transformation unit reads two-dimensional position coordinates of the image pixels and outputs transformed three-dimensional position coordinates. And the object-attribute determination unit determines, based on the transformed three-dimensional position coordinates and on the feature velocity information, whether the feature is a moving object.

Abstract: A roadway boundary detecting apparatus has an imaging device for taking picture images ahead of a vehicle, a picture image memory connected to the imaging device for storing the picture images, and a control unit connected to the picture image memory. The roadway boundary detecting apparatus further has a program executable on the control unit for calculating speed information for pixels of consecutive picture images taken by the imaging device, detecting lowest point positions in regions in which pixels having speed components continuously exist along a vertical direction, based on the speed information for the pixels, and determining whether a straight line that connects the lowest point positions is a roadway boundary.

Abstract: A device automatically detects boundary lines on the road from an image captured by a camera mounted on the vehicle. The device includes a controller that performs image processing on the image to compute the velocity information for each pixel in the image, and, on the basis of the computed velocity information for each pixel in the image, extracts the pixels that contain velocity information, detects the oblique lines formed by the extracted pixels, and detects the boundary lines on the road on the basis of the detected oblique lines.

Abstract: A pedestrian detecting method including: picking up an image of a scene in front of a vehicle; extracting characteristic points from the picked up image; calculating a velocity at which, and a direction in which, each of pixels representing the respective characteristic points moves in the image; expressing coordinates of each of the pixels in a coordinate system corresponding to an overhead view; determining whether the characteristic points represent a two-dimensional object or a three-dimensional object, and if it is determined that they represent the three-dimensional object, whether or not the three-dimensional object is a moving object, on the basis of the calculated velocity and direction of each of the pixels and the coordinates thereof in the overhead view; and determining whether or not the moving object is a pedestrian on the basis of change in the velocity at which the moving object moves in the image.

Abstract: A device automatically detects boundary lines on the road from an image captured by a camera mounted on the vehicle. The device includes a controller that performs image processing on the image to compute the velocity information for each pixel in the image, and, on the basis of the computed velocity information for each pixel in the image, extracts the pixels that contain velocity information, detects the oblique lines formed by the extracted pixels, and detects the boundary lines on the road on the basis of the detected oblique lines.

Abstract: A detecting device and corresponding method for detecting an object in an image where the image is captured by an image pickup device mounted on a vehicle. A controller is coupled to the image pickup device. The controller extracts pixels of the image captured by the image pickup device, calculates a side direction velocity component based upon the extracted pixels, detects a road boundary based upon the calculated side direction velocity component, and detects a moving direction of the object based upon a relationship between the road boundary and the object.

Abstract: A pedestrian detecting method including: picking up an image of a scene in front of a vehicle; extracting characteristic points from the picked up image; calculating a velocity at which, and a direction in which, each of pixels representing the respective characteristic points moves in the image; expressing coordinates of each of the pixels in a coordinate system corresponding to an overhead view; determining whether the characteristic points represent a two-dimensional object or a three-dimensional object, and if it is determined that they represent the three-dimensional object, whether or not the three-dimensional object is a moving object, on the basis of the calculated velocity and direction of each of the pixels and the coordinates thereof in the overhead view; and determining whether or not the moving object is a pedestrian on the basis of change in the velocity at which the moving object moves in the image.

Abstract: A roadway boundary detecting apparatus has an imaging device for taking picture images ahead of a vehicle, a picture image memory connected to the imaging device for storing the picture images, and a control unit connected to the picture image memory. The roadway boundary detecting apparatus further has a program executable on the control unit for calculating speed information for pixels of consecutive picture images taken by the imaging device, detecting lowest point positions in regions in which pixels having speed components continuously exist along a vertical direction, based on the speed information for the pixels, and determining whether a straight line that connects the lowest point positions is a roadway boundary.

Abstract: An object detecting system includes an imaging device disposed on a vehicle and a controller that receives a two-dimensional image, which represents a scene ahead of the vehicle, from the imaging device. The controller includes a feature extraction unit, a motion-information calculator, a coordinate transformation unit, and an object-attribute determination unit. The feature extraction unit reads the image and extracts the edges of a feature in the image. The motion-information calculator evaluates the feature in the image and outputs feature velocity information for each image pixel that shows the edges of the feature. The coordinate transformation unit reads two-dimensional position coordinates of the image pixels and outputs transformed three-dimensional position coordinates. And the object-attribute determination unit determines, based on the transformed three-dimensional position coordinates and on the feature velocity information, whether the feature is a moving object.

Abstract: A detecting device and corresponding method for detecting an object in an image where the image is captured by an image pickup device mounted on a vehicle. A controller is coupled to the image pickup device. The controller extracts pixels of the image captured by the image pickup device, calculates a side direction velocity component based upon the extracted pixels, detects a road boundary based upon the calculated side direction velocity component, and detects a moving direction of the object based upon a relationship between the road boundary and the object.

Abstract: In a latch release apparatus and method, a latch mechanism holds an actuator with a high shock resistance. Two or more magnetic members are arranged in a latch component so as to concentrate a magnetic force for easy rotation of the latch component. The effect of the magnetic force in a direction perpendicular to the direction of rotation of the magnetic members becomes smaller, reducing the friction force at the rotational center of the latch.

Abstract: In a latch mechanism that holds an actuator with a high shock resistance two or more magnetic members are arranged in a latch component, which generates a weaker attraction force but a more easy rotation of the latch component. The structure concentrates a magnetic force in order to rotate the latch component effectively. The effect of the magnetic force in a direction perpendicular to the direction of rotation of the magnetic members becomes smaller and a friction force at the rotation center of the latch is reduced.