Abstract: According to one embodiment, a semiconductor storage device includes a first substrate, a casing, a first non-volatile memory, a controller, and a first member. The first member connects thermally the first substrate and the casing. At least a portion of the first member is positioned between the first non-volatile memory and the controller.

Abstract: According to one embodiment, a semiconductor storage device includes a first substrate, a casing, a first non-volatile memory, a controller, and a first member. The first member connects thermally the first substrate and the casing. At least a portion of the first member is positioned between the first non-volatile memory and the controller.

Abstract: According to an embodiment of the present invention, a semiconductor memory device includes a substrate, a connector, a controller, a plurality of first capacitors, and a plurality of first memory packages. The connector is disposed at a first side of the substrate. The controller is mounted on a first face of the substrate and is disposed near the connector. The first capacitors are mounted on the first face of the substrate and are disposed along a second side opposing the first side. Each of the first memory packages includes a non-volatile semiconductor memory. The first memory packages are mounted on a second face of the substrate.

Abstract: The present invention relates to a magnetic disk device and provides a magnetic disk device in which data recording areas are separately set based on the inner recording boundary or outer recording boundary of the head measured for each magnetic disk device. When the recording linear (angular) density that has to be attained to ensure a prescribed capacity cannot be attained by the head, the recording linear (angular) density that has to be attained by the head is reduced and the prescribed capacity is realized by expanding the data recording area. A method using a counter-electromotive force generated when the head is moved toward a stopper or ramp load or a method by which the measurements are conducted based on the head position information from the servo signal can be used for measuring the positions of the inner recording boundary and outer recording boundary of the head.

Abstract: The present invention relates to a magnetic disk device and provides a magnetic disk device in which data recording areas are separately set based on the inner recording boundary or outer recording boundary of the head measured for each magnetic disk device. When the recording linear (angular) density that has to be attained to ensure a prescribed capacity cannot be attained by the head, the recording linear (angular) density that has to be attained by the head is reduced and the prescribed capacity is realized by expanding the data recording area. A method using a counter-electromotive force generated when the head is moved toward a stopper or ramp load or a method by which the measurements are conducted based on the head position information from the servo signal can be used for measuring the positions of the inner recording boundary and outer recording boundary of the head.

Abstract: The present invention relates to a magnetic disk device and provides a magnetic disk device in which data recording areas are separately set based on the inner recording boundary or outer recording boundary of the head measured for each magnetic disk device. When the recording linear (angular) density that has to be attained to ensure a prescribed capacity cannot be attained by the head, the recording linear (angular) density that has to be attained by the head is reduced and the prescribed capacity is realized by expanding the data recording area. A method using a counter-electromotive force generated when the head is moved toward a stopper or ramp load or a method by which the measurements are conducted based on the head position information from the servo signal can be used for measuring the positions of the inner recording boundary and outer recording boundary of the head.

Abstract: The present invention relates to a magnetic disk device and provides a magnetic disk device in which data recording areas are separately set based on the inner recording boundary or outer recording boundary of the head measured for each magnetic disk device. When the recording linear (angular) density that has to be attained to ensure a prescribed capacity cannot be attained by the head, the recording linear (angular) density that has to be attained by the head is reduced and the prescribed capacity is realized by expanding the data recording area. A method using a counter-electromotive force generated when the head is moved toward a stopper or ramp load or a method by which the measurements are conducted based on the head position information from the servo signal can be used for measuring the positions of the inner recording boundary and outer recording boundary of the head.

Abstract: A noise component is eliminated from a servo signal recorded on a recording medium and read by a head. A number of times that a noise eliminated servo signal crosses zero-cross points is counted in order to determine an integration period based on the number of times. The noise-eliminated servo signal is integrated for the integration period, an integrated value thus obtained indicating a position of the head.