65results about "Record carrier types" patented technology

A magnetic medium is described which includes a thin film magnet structure formed of a ferromagnetic alloy or compound. The thin film magnet structure includes one or more ferromagnetic domains and is coupled to one or more optical structures. Each of the one or more ferromagnetic domains have a magnetization that is switchable between two or more states. Each of the one or more optical structures is configured to increase absorbance of light at a target wavelength in the thin film magnet structure, such that in response to illumination of a ferromagnetic domain with continuous-wave light including the target wavelength, that ferromagnetic domain undergoes all-optical magnetic switching.

To provide a disk device capable of suppressing contamination.SOLUTION: A disk device includes a magnetic disk, a magnetic head, a flexible printed circuit board, electronic components, and a wall. The flexible printed circuit board is electrically connected to the magnetic head. The electronic components are mounted on the flexible printed circuit board. The wall has higher rigidity than the flexible printed circuit board and is mounted on the flexible printed circuit board. The flexible printed circuit board has a first surface facing the electronic component through a space and a second surface positioned on an opposite side of the first surface and facing the wall, and is provided with a first through hole opened on the first surface and the second surface and communicating with the space. The wall is provided with a second through hole penetrating the wall and communicating with the first through hole.SELECTED DRAWING: Figure 4

To accurately detect read errors in postcodes. [Solution] The magnetic disk device of the embodiment comprises a magnetic disk having a plurality of tracks, a magnetic head for reading and writing data to the magnetic disk, a plurality of servo regions provided on each of the plurality of tracks and including at least a portion of a first physical pattern which is the physical pattern after writing of a first data pattern including position information for each of the plurality of tracks, and a control unit for controlling the magnetic head. Each of the plurality of servo regions includes either a first servo region including the first physical pattern, or a second servo region including a second physical pattern which is the physical pattern after writing of a second data pattern different from the first data pattern, for each of the plurality of tracks, and the control unit determines whether the third servo region among the plurality of servo regions of the plurality of tracks has the first or the second physical pattern.

To provide a magnetic tape cartridge, a cartridge management system, a reading method, and a program enabling accurately reading an identifier.SOLUTION: A magnetic tape cartridge includes a case on which an identifier is displayed, and a storage medium in which reading condition information that is information regarding a condition for reading the identifier is stored.SELECTED DRAWING: Figure 8

According to one embodiment, a magnetic disk device includes a rotatable disk-shaped recording medium including a plurality of concentric recording tracks, a magnetic head including a write element which writes data to the recording tracks, a heating element, and a sensor which detects a surface condition of the recording medium, and a controller including an inspection circuit which detects, based on an sensor output of the sensor, presence or absence of a bump on a surface of the recording medium, a height and a width of the bump, and a memory which records the detected height and width of the bump.

According to one embodiment, a magnetic disk device includes a rotatable disk-shaped recording medium including a plurality of concentric recording tracks, a magnetic head including a write element which writes data to the recording tracks, a heating element, and a sensor which detects a surface condition of the recording medium, and a controller including an inspection circuit which detects, based on an sensor output of the sensor, presence or absence of a bump on a surface of the recording medium, a height and a width of the bump, and a memory which records the detected height and width of the bump.

A voice coil motor assembly (VCMA), such as for a hard disk drive, includes a low-density voice coil and a high-density coil stiffener disposed inside the coil of wire. The low-density voice coil, utilizing copper-clad aluminum or aluminum wire, is configured to increase the second coil torsion mode frequency of the VCMA, thereby bringing it closer to the second torsion mode frequency of the actuator arms. In conjunction, the high-density stiffener, utilizing steel or copper or zinc, is configured to increase the mass of the VCMA to compensate for the lower-density wire in regard to the center of mass of the VCMA about its axis of rotation. In viewing under customer box vibration conditions and in terms of position error signals (PES), a non-trivial peak in the PES spectrum due to the second coil torsion mode is largely eliminated, and the power of PES is reduced to about half.

To provide a disk device capable of improving the strength of coupling between an end surface of a base and an outer cover.SOLUTION: A disk device according to one embodiment includes a magnetic disc, a base, a film, an inner cover, and an outer cover. The base is provided with an inner space and has: a first inner surface that surrounds the magnetic disk; a support surface that is connected to an end of the first inner surface in a first direction; a second inner surface that is more separated from a rotation axis of the magnetic disk than the first inner surface and is also connected to the support surface; and an end surface that is connected to an end of the second inner surface in the first direction. The film covers a coating region included in the second inner surface and is separated from the end surface and an exposure region included in the second inner surface and aligned with the coating region around the rotation axis. The inner cover is supported on the support surface and is surrounded with the second inner surface. The outer cover is at least partially coupled to the base.SELECTED DRAWING: Figure 1

A method of manufacturing a magnetic disk device of an embodiment includes: adjusting relative heights of a spindle and a plurality of ramps, the spindle being allowed to rotate in a state in which center axes of a plurality of magnetic disks having ends deviating from a geometrical plane with a center point as a reference are aligned, the plurality of ramps being arranged at end positions of the plurality of magnetic disks; and assembling the plurality of magnetic disks along an axial direction of the spindle in a state in which directions of deviations of the ends from the center point are aligned.

A video player includes the user interface comprising: a video display; a texture strip visually representing a series of frames of a video, the texture strip comprising a sequence of textured frame representations, each textured frame representation in sequence of textured frame representations representing a corresponding frame from a series of frames; a control to allow a user to use the texture strip to seek frames in the series of frames in a random manner. An input is received via the control, the input including an indication of a selection of a location in the texture strip, the location in the texture strip having a corresponding temporal location in the series of frames. Based on the input, a frame selected from the series of frames is displayed in the video display, the selected frame located at the corresponding temporal location in the series of frames.

In a recording and reproducing apparatus and a recording and reproducing method for the recording and reproducing apparatus for recording and reproducing image information on a scene obtained through photographing, relative to a predetermined first recording medium and being capable of setting one or more chapters to each scene, a face recognizing process is executed for a photographed image based on the image information, an importance level of each chapter is set in accordance with a result of the face recognizing process for a very important person (VIP) set by a user, and each chapter having a relevant importance level among importance levels of respective chapters is selectively reproduced. A user can therefore find an object chapter and scene quickly and easily.

Provided is a disk device capable of improving the bonding strength between an end surface of a base and a housing. A disk device according to an embodiment includes a magnetic disk, a base, a film, an inner cover, and an outer cover. The base body is provided with an internal space; the magnetic disk includes a first inner surface surrounding the magnetic disk, a support surface connected to an end of the first inner surface in a first direction, a second inner surface farther from a rotation axis of the magnetic disk than the first inner surface and connected to the support surface, and an end surface connected to an end of the second inner surface in the first direction. The film covers a covered region in the second inner surface, and is separated from the end surface and an exposed region in the second inner surface, the exposed region being aligned with the covered region around the rotation axis. The inner cover is supported by the support surface and surrounded by the second inner surface. And the outer cover is combined with at least one part of the base body.

A module including first and second variable inductances. The first variable inductance is electrically connected to a pair of nodes in a first half-circuit. One of the nodes in the first half-circuit is a first connection terminal. The second variable inductance is electrically connected to a pair of nodes in a second half-circuit. One of the nodes in the second half-circuit is a second connection terminal. The first half-circuit receives a flow of current in response to the second half-circuit supplying the current to the load in a flow direction from a load through the first connection terminal. The second half-circuit is configured to receive the flow of the current in response to the first half-circuit supplying the current to the load in a direction opposite to the flow direction from the load through the second connection terminal.

The computer-implemented method and the computing device for partitioning video data between multiple discs are disclosed. An evidence data and / or a list of evidence data comprising multiple items, wherein at least some items are grouped in events, is received. An event for allocation is selected and allocated by assigning each item of the event to a disc according to a predefined criteria.

To provide an electronic apparatus in which an electronic component can be more reliably mounted on a substrate.SOLUTION: An electronic apparatus according to one embodiment includes a substrate and an electronic component. The substrate has a first surface directed to a first direction, and is provided with a first hole and a second hole. The electronic component includes a base, and a first projection and a second projection that are projected from the base and are partially housed in the first hole and the second hole. In a second direction, an end of the first projection is separated farther from the first surface than the end of the second projection. The first projection and the second projection have a first inclined surface and a second inclined surface that extend from the end obliquely with respect to the first direction. A length of the first inclined surface in a third direction orthogonal to the first direction is longer than a length of the second inclined surface in the third direction.SELECTED DRAWING: Figure 4

A display device includes circuitry configured to transmit, to a reproduction device, display-capability information representing performance characteristics of the display device. The circuitry receives video data from the reproduction device that includes brightness-characteristic information and information of a master video when the display-capability information represents a display performance of the video data. The circuitry displays an image of the received video data in accordance with brightness designated by the received information, and adjusts the image brightness based on the display device's performance. When the master video is high-dynamic-range (HDR) video data, the circuitry recognizes the HDR content and displays the image in accordance with brightness characteristics of the master video.

An embodiment of the present invention provides a disk device capable of suppressing peeling of a flexible printed circuit board. A disk device of one embodiment has a magnetic disk, a magnetic head, a first flexible printed circuit board, and a second flexible printed circuit board. The first flexible printed circuit board has a plurality of first terminals. The second flexible printed circuit board has a surface, a plurality of second terminals provided on the surface and joined to the plurality of first terminals by a joining body, and a first planar ground layer covering at least one of the plurality of second terminals in a direction orthogonal to the surface. The plurality of second terminals include a first read terminal. The first planar ground layer is separated from at least a portion of the first read terminal in a direction along the surface.

A system 100 for the erasure of data from a tape cartridge 110 has a data tape 112, a cartridge memory (CM) chip and a controller 102 in communication with a magnetic head 108, a tape driver 106 and a

This invention provides a data storage device that controls the torsional mode of a coil and reduces the power consumption of an actuator. [Solution] A voice coil motor assembly (VCMA) 400 for hard disk drives and the like includes a low-density voice coil 407 and a high-density coil reinforcement 408 positioned inside the wire coil. The low-density voice coil, utilizing copper-clad aluminum or aluminum wire, increases the second coil torsion mode frequency of the VCMA, thereby bringing it closer to the second torsion mode frequency of the actuator arm 402. In addition, the high-density reinforcement, utilizing steel, copper, or zinc, increases the mass of the VCMA with respect to the center of mass of the VCMA around the rotation axis of the VCMA, compensating for the lower-density wire. With respect to the position error signal (PES) under customer box vibration conditions, significant peaks in the PES spectrum are largely eliminated, and the power of the PES is reduced by approximately half.

A module including first and second variable inductances. The first variable inductance is electrically connected to a pair of nodes in a first half-circuit. One of the nodes in the first half-circuit is a first connection terminal. The second variable inductance is electrically connected to a pair of nodes in a second half-circuit. One of the nodes in the second half-circuit is a second connection terminal. The first half-circuit receives a flow of current in response to the second half-circuit supplying the current to the load in a flow direction from a load through the first connection terminal. The second half-circuit is configured to receive the flow of the current in response to the first half-circuit supplying the current to the load in a direction opposite to the flow direction from the load through the second connection terminal.

The computer-implemented method and the computing device for partitioning video data between multiple discs are disclosed. An evidence data and / or a list of evidence data comprising multiple items, wherein at least some items are grouped in events, is received. An event for allocation is selected and allocated by assigning each item of the event to a disc according to a predefined criteria.

The present invention provides a system for the erasure of data from a tape cartridge having a data tape and a CM chip, the device comprising: a controller in communication with: a magnetic head; a tape driver; and an antenna, wherein, when a data cartridge is detected by the controller, the controller is operable to signal to the antenna to determine the CM chip identification data; and, the controller is operable in dependence on the received CM chip identification data to instruct the antenna to overwrite at least a portion of the non-protected memory of the CM chip.

The present invention provides a system for the erasure of data from a tape cartridge having a data tape and a CM chip, the device comprising: a controller in communication with: a magnetic head; a tape driver; and an antenna, wherein, when a data cartridge is detected by the controller, the controller is operable to signal to the antenna to determine the CM chip identification data; and, the controller is operable in dependence on the received CM chip identification data to instruct the antenna to overwrite at least a portion of the non-protected memory of the CM chip.

To provide a disk device capable of improving the degree of freedom of design.SOLUTION: A disk device according to one embodiment includes a plurality of magnetic disks, a spindle motor, a housing, a first substrate, and a first connector. The magnetic disks are arranged in an axial direction along a first rotation axis. The spindle motor rotates the magnetic disk. The housing has a first wall provided therein with a space housing the magnetic disk and the spindle motor, to which the spindle motor is attached, and a second wall projecting from the first wall and surrounding the space. The first substrate is attached to the outer surface of the second wall facing the outside of the space. The first connector is attached to the first substrate. The diameter of the magnetic disk is 80 mm or more and 100 mm or less. The maximum dimension of the housing in the axial direction is 26.2 mm or more.SELECTED DRAWING: Figure 1

The invention provides a magnetic disk device and a control method thereof. A magnetic disk device includes: a circular magnetic disk including a plurality of data recording tracks formed by a plurality of sectors arranged in a circumferential direction, the magnetic disk being formed by arranging the tracks in a radial direction; the magnetic head can seek channels in the radial direction of the magnetic disk and write and read data in and out of the magnetic disk; and a controller that controls rotation of the magnetic disk and track seeking of the magnetic head. The controller includes: a first write control unit that writes first data and second data to each sector of a predetermined track among the tracks; a second write control unit that writes the first data to each sector of a predetermined track among the tracks; and a selection control unit that, upon receiving a write command, predicts the time required from the start of the processing by the first write control unit to the end of the processing, and selectively executes either the processing by the first write control unit or the processing by the second write control unit by comparing the predicted time with a pre-specified limit time.

The present technology relates to a reproduction device, a reproduction method, and a recording medium that enable content having a wide dynamic range of brightness to be displayed with an appropriate brightness. A recording medium, on which the reproduction device of one aspect of the present technology performs reproduction, records coded data of an extended video that is a video having a second brightness range that is wider than a first brightness range, brightness characteristic information that represents a brightness characteristic of the extended video, and brightness conversion definition information used when performing a brightness conversion of the extended video to a standard video that is a video having the first brightness range. The reproduction device decodes the coded data and converts the extended video obtained by decoding the coded data to the standard video on the basis of the brightness conversion definition information.

A head stack assembly (HSA) for a hard disk drive includes a carriage from which a plurality of arms extend, where the arms include outer arms at each end of the carriage and inner arms between the outer arms such that each inner arm carries two suspension assemblies and each outer arm only carries one suspension assembly coupled with an inner side of the outer arm, wherein each suspension assembly includes a corresponding fine actuator. The HSA also includes a reverse suspension assembly coupled to an outer side of each outer arm, where each reverse suspension assembly includes a structurally flexible dummy load beam having a mass distribution and a stiffness distribution configured to mitigate a plurality of structural dynamic modes of an operating suspension assembly coupled to the inner side of the outer arm.

Embodiments of the present invention provide a disk device and a manufacturing method thereof that can reduce height variations in stacked magnetic disks. According to the embodiment, the disk device includes: a housing having a base having a bottom wall and a cover fixed to the base; a drive motor having a pivot shaft erected from the bottom wall and a hub having an outer peripheral surface coaxial with the pivot shaft and an annular flange provided at an end of the outer peripheral surface on the bottom wall side, rotatably supported by the pivot shaft; ten or more magnetic disks mounted on the hub and stacked on the flange; and a plurality of spacer rings, one less than the number of magnetic disks, mounted on the hub and positioned between adjacent magnetic disks, stacked together with the magnetic disks on the flange. At least one of the spacer rings has a different thickness from the other spacer rings, and the difference between the maximum and minimum thicknesses of the spacer rings is 0.01 mm or more and 0.09 mm or less.

A voice coil motor assembly (VCMA), such as for a hard disk drive, includes a low density voice coil and a high density coil reinforcement disposed inside the wire coil. The low density voice coil utilizes copper clad aluminum or an aluminum wire configured to increase a second coil torsional mode frequency of the VCMA so as to be closer to a second torsional mode frequency of the actuator arm. At the same time, the high density reinforcement utilizes steel or copper or zinc configured to increase the mass of the VCMA about the center of mass of the VCMA about its axis of rotation to compensate for the lower density wire. When viewed under client chassis vibration conditions, and according to a position error signal (PES), non-trivial peaks in the PES spectrum due to the second coil torsional modality are greatly eliminated, and the power of the PES is reduced to about half.