362 results about "Disks (device)" patented technology

The invention relates to the technical field of cores, and discloses a method and a system for realizing USB flash disk equipment interaction based on a flash memory encryption technology, which comprises the following steps of: dividing an encryptable data block of a flash memory controller, and determining a dynamic entropy weight of the encryptable data block by utilizing an equipment interaction instruction and a random noise characteristic signal; generating a self-adaptive key generation sequence capable of encrypting data blocks through an address allocation mode and a dynamic entropy weight of a flash memory controller; calculating a side channel leakage risk index of the flash memory controller, and setting a security level label of an encryptable data block in combination with a self-adaptive key generation sequence; the method comprises the following steps: setting a differentiated security protection mechanism of an encipherable data block by constructing an access control matrix of the encipherable data block and an encryption risk area of a flash memory controller; and generating a secure interaction scheme of the USB flash disk equipment based on the self-adaptive key generation sequence in combination with the differential security protection mechanism and the access control matrix. According to the invention, the interaction safety and reliability of the USB flash disk equipment can be improved.

According to one embodiment, a disk device includes a magnetic disk, a magnetic head, a flexure, a piezoelectric element, a first bonding material, a second bonding material, and a protrusion. The flexure includes a first outer surface, a first pad, and a second pad. The first pad and the second pad are on the first outer surface. The piezoelectric element includes a second outer surface, a first electrode, and a second outer surface. The first electrode and the second electrode are on the second outer surface. The first bonding material, which is conductive, bonds the first pad and the first electrode. The second bonding material, which is conductive, bonds the second pad and the second electrode. The protrusion is provided on the flexure, is located at least partially between the first bonding material and the second bonding material, and protrudes from the first outer surface.

According to one embodiment, a magnetic disk device includes a disk, a head configured to write data to the disk and read the data from the disk, and a controller configured to control write processing based on a first determination value corresponding to a first shift amount defined for the excessive number of times at which the first shift amount of the head in a radial direction of the disk exceeds a first threshold value causing a read error in a second track adjacent to a first track in the radial direction at a time of the write processing of the first track of the disk, and a second threshold value changing the write processing.

The invention discloses a multichannel extended hard disk automatic test device and method. The multichannel extended hard disk automatic test device comprises a control server, a network switch, a test host and a test device, the control server is connected with at least one test host through a network switch, each test host is connected with a test device through a programmable power strip, and the test devices are connected with multiple paths of hard disk equipment; the control server can generate test parameters and issue the test parameters to the test host with the network wakeup function, and the test host can automatically call corresponding test scripts according to the received test parameters, execute test tasks on the hard disk, record the test process and result and upload the test process and result to the control server; the test device can realize automatic switching of a plurality of hard disks of the same test host interface according to the test parameters; and meanwhile, the power supply of the test host is controlled through the programmable power strip so as to generate abnormal power failure test excitation. According to the invention, a single test host can automatically and orderly test a plurality of hard disks in batches.

According to one embodiment, a disk device includes a disk-shaped recording medium, an actuator assembly provided to be rotatable and supporting a magnetic head, and a first stopper and a second stopper, arranged contactable with the actuator assembly. At least one of the first stopper and the second stopper includes a cushioning member having a contact surface contactable with the actuator assembly, and a gas adsorption member provided to surround the cushioning member except for the contact surface.

According to one embodiment, a magnetic disk device includes a disk, a write head, and a write processing unit. The write processing unit executes first write processing of writing data to a first segment of a first data sector in a first data track. The write processing unit then executes second write processing of writing data to a first segment of a second data sector in the first data track. The write processing unit then executes third write processing of writing data to a second segment of the first data sector in a second data track.

According to one embodiment, a disk device includes a magnetic disk, a magnetic head, a flexure, a piezoelectric element, a first bonding material, a second bonding material, and a protrusion. The flexure includes a first outer surface, a first pad, and a second pad. The first pad and the second pad are on the first outer surface. The piezoelectric element includes a second outer surface, a first electrode, and a second outer surface. The first electrode and the second electrode are on the second outer surface. The first bonding material, which is conductive, bonds the first pad and the first electrode. The second bonding material, which is conductive, bonds the second pad and the second electrode. The protrusion is provided on the flexure, is located at least partially between the first bonding material and the second bonding material, and protrudes from the first outer surface.

According to one embodiment, a disk device includes a magnetic disk, a magnetic head, a flexure, a piezoelectric element, a first bonding material, a second bonding material, and a protrusion. The flexure includes a first outer surface, a first pad, and a second pad. The first pad and the second pad are on the first outer surface. The piezoelectric element includes a second outer surface, a first electrode, and a second outer surface. The first electrode and the second electrode are on the second outer surface. The first bonding material, which is conductive, bonds the first pad and the first electrode. The second bonding material, which is conductive, bonds the second pad and the second electrode. The protrusion is provided on the flexure, is located at least partially between the first bonding material and the second bonding material, and protrudes from the first outer surface.

According to one embodiment, a disk device includes two magnetic disks opposing each other at intervals of 1.2 to 1.5 mm, and at least two suspension assemblies movable respectively between the two magnetic disks. Each of the suspension assemblies includes a base plate, a load beam extending from the base plate, a tab extending from a distal end of the load beam, a wiring member on the load beam and the base plate, including a gimbal portion, and a magnetic head on the gimbal portion, abutting on a dimple of the load beam via the gimbal portion. The ratio of a distance from a bendable location of the load beam to a center of the dimple with respect to a distance from the center of the dimple to a tip of the tab is 2.8 to 3.8.

Disclosed in the present application are a rotating disk device and a curing machine. The rotating disk device comprises a mounting plate, a bearing plate, an active rotating disk, and a driving member. The bearing plate is rotatably mounted on one side of the mounting plate and in a detachable manner, and the bearing plate is provided with a first magnetic member. The active rotating disk is arranged on the other side of the mounting plate, and a second magnetic member, which is arranged corresponding to the first magnetic member, is arranged on the active rotating disk. The driving member is connected to the mounting plate and cooperates with the active rotating disk, and the driving member is used for driving the active rotating disk to rotate.

Some embodiments provide a novel method for configuring a network interface card (NIC) that is connected to a host computer and that emulates a local non-volatile memory express (NVMe) storage device, using external storages, for a set of processes executing on the host. The method configures, on the NIC's operating system (OS), a storage emulator program to present the external storages to the host processes as the local NVMe storage device. The method configures, on the NIC's OS, a disk device to exchange NVMe requests and responses between the host processes and the external storages by exchanging the NVMe requests and responses (1) with a virtual NVMe (vNVMe) controller of the NIC through a storage stack of the OS, or (2) directly with the vNVMe controller such that the disk device bypasses the storage stack. Exchanging NVMe requests and responses directly with the vNVMe controller optimizes the NIC's performance.

The invention discloses a method for mounting a backup mirror image into a Windows volume. The method comprises the following steps: S1, initializing a driving program; the method comprises the following steps: firstly, creating a temporary directory F in a Windows NT object manager namespace, creating a plurality of pieces of equipment of which the types are disks under the temporary directory F, and initializing an event object E in DEVICEXTENSION after the creation is successful, S2, calling PsCreate System Thread to create a working thread for the disk equipment, and S3, assigning a response column and a drive unloading routine of an IRP for a drive program. And S4, waiting for the working thread to be triggered by the event object E. According to the method, the temporary directory and the disk equipment are created in the Windows NT object manager, and the backup mirror image is mounted in the operating system as a new volume, so that data in the mirror image file can be accessed in a file form. By using the event object E, effective communication between the driving program and the working thread can be realized.

According to one embodiment, a disk device includes a magnetic disk, a housing, a first filter unit, and a second filter unit. The housing is provided with an internal space and is provided with a first through hole. The first filter unit includes a first case with a first accommodation space which is in communication with the first through hole, a first adsorbent in the first accommodation space, and a first filter. The first accommodation space is in communication with the internal space through the first filter. The second filter unit includes a second case with a second accommodation space which is separated from the first accommodation space, a second adsorbent in the second accommodation space, and a second filter. The second accommodation space is in communication with the internal space through the second filter.

The invention discloses a backup method and device based on NBD mapping, and relates to the technical field of system backup, and the method specifically comprises the following steps: receiving a system backup instruction; identifying protection object parameters in the system backup instruction to obtain a to-be-reconstructed disk list; in the target medium, creating a corresponding virtual disk device for each physical disk in the to-be-reconstructed disk list based on NBD mapping; based on the to-be-reconstructed disk list and the collected data of the to-be-backed-up host, performing partition table structure reconstruction on the virtual disk device to obtain a virtual disk partition device and a virtual volume device; determining a corresponding relationship between the volume on the host to be backed up and the virtual disk device, the virtual disk partition device and the virtual volume device to obtain a mapping relationship table; and determining a volume set to be backed up based on the mapping relation table. According to the method, the concurrent backup capability is enhanced, and compared with an existing system backup mode, the resource consumption can be reduced, the backup efficiency can be improved, and the data verification time can be shortened.

The invention discloses a flat plate slotted rupture disk device resistant to high back pressure and full-channel pressure relief, which relates to the technical field of safe overpressure relief and comprises a flat plate slotted rupture disk assembly, an upper clamp and a lower clamp. The flat plate slotted rupture disk assembly comprises a flat plate slotted rupture disk and a plane supporting plate which are respectively provided with a C-shaped weakening groove and a C-shaped circular seam; according to the flat plate slotted rupture disk, the C-shaped weakening groove for controlling the rupture pressure can crack along the annular groove to form a full-channel relief opening during rupture, and the pressure relief efficiency is guaranteed; the diameter of the C-shaped circular seam is 2-4mm smaller than that of the C-shaped weakening groove, so that the supporting plate is ensured to be opened along the seam and penetrate through the upper-layer C-shaped groove rupture disk, and a discharge channel is ensured to be completely opened; dense spot welding is carried out between the flat slotted rupture disk and the planar supporting plate, so that no fragment of the rupture disk during blasting is ensured; the matching relation of the inner diameters of the upper and lower clamping devices and the diameters of the C-shaped groove in the rupture disk and the C-shaped circular seam in the plane supporting plate can ensure that the product is resistant to high back pressure, and the whole flow channel is opened.

According to one embodiment, a suspension assembly includes a support plate, a wiring member provided on the support plate and including an elastically deformable gimbal portion including a tongue portion on which a magnetic head is mounted and an outrigger connected to the tongue portion, and a viscoelastic material filled into a gap between the outrigger and the support plate and forming a damper.

According to the IO speed limiting method and device under multiple threads, the electronic equipment and the storage medium provided by the embodiment of the invention, the technology realizes speed limiting of the IO request through a quota isolation and critical point synchronization mechanism, and effectively avoids frequent scrambling of a lock at the same time. The core process of the method comprises the following steps: when a client issues an IO request, reading a current value of a speed limit counter, and calculating an available space in combination with a preset speed limit quota and an instantaneous issuing space; when the request quantity does not exceed the available space, directly releasing the request to disk equipment and updating a statistical value; and if the request quantity exceeds the available space, safely accessing the quota management pool through the thread lock, obtaining a target speed limit quota from the global IO request speed limit quota, and temporarily improving the instantaneous issuing space to process the excess request. According to the design, the threads can operate autonomously within the quota through quota independent distribution, lock competition is not needed, meanwhile, synchronous operation is strictly limited in a critical scene of quota application, the lock scrambling frequency is greatly reduced, and therefore IO performance is remarkably improved.

The present invention discloses a fully automatic capacitance appearance inspection machine, including a frame, a turntable device, a feeding device, a feeding detection device, a plurality of appearance detection devices and a feeding device; the turntable device includes a turntable and a turntable driving mechanism arranged on the frame, the turntable is located above the frame, a feeding station, a plurality of detection stations and a feeding station are sequentially arranged around the turntable on the frame, the turntable is connected to the turntable driving mechanism, a plurality of fixture mechanisms are arranged at intervals along the circumference of the turntable, among the plurality of fixture mechanisms, two of the fixture mechanisms correspond to the feeding station and the feeding station respectively, and the remaining fixture mechanisms correspond to the plurality of detection stations one by one; the feeding device and the feeding detection device are both located at the feeding station, a plurality of appearance detection devices correspond to the plurality of detection stations one by one and are respectively located at the corresponding detection stations, and the feeding device is located at the feeding station. The present invention improves production efficiency and reduces production costs.

According to one embodiment, a disk device includes a housing with a bottom wall, magnetic disks supported on a hub of a motor, a printed circuit board provided on an outer surface of the bottom wall, and a wiring board attached on the outer surface of the bottom wall. The bottom wall includes a recess formed in the outer surface, a step located on border between the outer surface and the recess, and through holes opened to the recess. The wiring board includes one end portion disposed in the recess and connection pads on the one end portion, connected to lead wires of a coil. An adhesive is filled into the recess and the through holes, and covers the one end and a solder joint and seals the through holes.

The present application relates to the technical field of hard disk monitoring. Disclosed are a data demodulation method and apparatus for a hard disk log, a data modulation method and apparatus for a hard disk log, and a device and a medium. The demodulation method is applied to a baseboard management controller, and comprises: receiving level signals transmitted by state indication pins of a hard disk device, wherein the level signals are signals obtained by the hard disk device performing modulation on the basis of a hard disk log, and original state output signals of the state indication pins; identifying demodulated data corresponding to each target rectangular-wave signal among the level signals; and on the basis of the demodulated data, determining a valid data packet. In the present application, out-of-band monitoring of a hard disk device is realized by means of state indication pins of the hard disk device directly outputting hard disk log data to a baseboard management controller, and thus the problem in a conventional hard disk out-of-band monitoring scheme of it being difficult to realize out-of-band monitoring of a hard disk due to an out-of-band management system not having permission to access hard disk data is solved, thereby expanding the range of hard disk devices that can be subjected to out-of-band monitoring by a baseboard management controller.

The utility model relates to the technical field of rupture disks, and provides a reverse osmosis rupture disk device which is used for solving the problem that a release channel is blocked after the rupture disk falls off, and comprises a water inlet side flange, a water inlet side sealing washer, a rupture disk, a water outlet side sealing washer and a water outlet side flange which are sequentially arranged along the water flow direction, bolt through holes are formed in the water inlet side flange, the water inlet side sealing washer, the rupture disk, the water outlet side sealing washer and the water outlet side flange respectively, bolts for tightly pressing and connecting the bolt through holes penetrate through the bolt through holes, an annular weakening groove is formed in the face, facing the water inlet side, of the rupture disk, and the outer diameter of the annular weakening groove is not larger than the inner diameter of an external discharge channel. The depth of the annular weakening groove does not exceed half of the thickness of the rupture disk.

The utility model relates to the technical field of storage tank safety equipment, and discloses a negative pressure rupture disk device for a storage tank and the storage tank, the negative pressure rupture disk device for the storage tank comprises a clamping assembly, a supporting sheet and a rupture disk, and the clamping assembly is provided with a clamping position; at least part of the edge of the supporting piece is clamped in the clamping position by the clamping assembly, a first fracture guide line is arranged on the supporting piece, and the strength of the first fracture guide line is smaller than that of the supporting piece; the edge of the rupture disk is clamped in the clamping position by the clamping assembly, the rupture disk and the supporting sheet are arranged in a stacked mode, at least part of the rupture disk is connected with the supporting sheet, a second rupture guide line is arranged on the rupture disk, and the strength of the second rupture guide line is smaller than that of the rupture disk. When the supporting piece is broken along the first breaking guide line, the rupture piece is broken along the second breaking guide line and is kept connected with the supporting piece, the rupture piece is prevented from falling into the storage tank and polluting the interior of the storage tank, and therefore the cleaning workload of the storage tank is reduced.

The present invention relates to a method, device, computer device, and storage medium for testing TCGStorage protocol data reading. The method comprises: invoking anyone's authority to establish a session, then reading the default credentials of the hard disk device owner's authority; establishing a session with the hard disk device owner's authority; setting the credentials of the hard disk device owner's authority; saving customized encryption information to a data storage table to obtain saved information; locking the hard disk and then restarting the hard disk; invoking anyone's authority to establish a session, then reading the saved information to obtain read information; determining whether the read information is consistent with the saved information; if so, prompting for a password to be entered to obtain the entered password; establishing a session with the hard disk device owner's authority; if the session is successfully established, i.e., the entered password is verified, the hard disk is unlocked. The present invention is simple to test, does not require the installation of an operating system, and is fully automatic, thereby improving test efficiency.

To provide a suspension for a disk device capable of suppressing interference between a disk and a slider.SOLUTION: A suspension 10 includes a load beam 20 having a dimple portion 50 and a flexure 21 having a slider mounting portion 30. The dimple portion 50 has a convex surface 51 that contacts the slider mounting portion 30. The slider mounting portion 30 is swingably supported by a gimbal component member 40. A curvature radius R of the convex surface 51 is less than 0.15 mm. A flexure pitching resistance Fpr acting on a contact portion 90 when the slider mounting portion 30 swings in a pitching direction is 0.005 N or less. A phase delay in the pitching direction on the slider mounting portion 30 for the waviness of a rotating disk 12 is 20° or less.SELECTED DRAWING: Figure 4

Embodiments of the present invention relate to a disk device and an electronic device. The disk device includes a housing, a disk-shaped recording medium, a magnetic head, an internal wireless communication device, and internal components. The housing has a storage space provided therein. The recording medium is stored in the storage space and has a recording layer. The magnetic head is stored in the storage space and is configured to read and write information with respect to the recording medium. The internal wireless communication device performs at least one of the following operations: generating an electrical signal of information written by the magnetic head to the recording medium corresponding to light, a magnetic field, or an electric field generated by an external wireless communication device; and generating light, a magnetic field, or an electric field corresponding to the electrical signal of information read by the magnetic head from the recording medium toward the external wireless communication device. The internal components are stored in the storage space, are electrically connected to the magnetic head, and communicate with external components outside the housing through the internal wireless communication device and the external wireless communication device.

According to one embodiment, a disk device includes a magnetic disk, a magnetic head, a flexure, a piezoelectric element, a first bonding material, a second bonding material, and a protrusion. The flexure includes a first outer surface, a first pad, and a second pad. The first pad and the second pad are on the first outer surface. The piezoelectric element includes a second outer surface, a first electrode, and a second outer surface. The first electrode and the second electrode are on the second outer surface. The first bonding material, which is conductive, bonds the first pad and the first electrode. The second bonding material, which is conductive, bonds the second pad and the second electrode. The protrusion is provided on the flexure, is located at least partially between the first bonding material and the second bonding material, and protrudes from the first outer surface.

The present disclosure provides a disk device capable of suppressing failure due to exhaust and improving reliability. According to one embodiment, a disk device includes: a disk-shaped recording medium; an actuator assembly provided in a rotatable manner; a magnetic head supported on the actuator assembly; and a first stopper and a second stopper disposed so as to be capable of abutting against the actuator assembly. At least one of the first stopper and the second stopper is provided with: a buffer member having a contact surface capable of coming into contact with the actuator assembly; and a gas-adsorbing material provided so as to surround a portion of the buffer member other than the contact surface.

The technical scheme belongs to the technical field of automobile driven disc assemblies, and particularly relates to a built-in idling driven disc device which comprises an idling module used for being connected with a power source; the driven disc module is arranged on the idle speed module and can move along with the idle speed module; the idling module comprises a connecting part, a first connecting part, a second connecting part, a third connecting part, a fourth connecting part and a fourth connecting part, the transmission part is movably clamped outside the connecting part and can move along with the connecting part; the at least one idle speed spring is arranged between the connecting part and the transmission part and movably abuts against the connecting part and the transmission part at the same time; wherein the connecting part pushes the transmission part to move through the idling spring; at least one mounting groove I is concavely formed in the peripheral side of the connecting part, at least one mounting groove II is concavely formed in the inner side of the transmission part, the mounting groove I and the mounting groove II are matched to form a mounting position, and the idle spring is arranged in the mounting position.

A motor driver circuit includes: a current detection circuit configured to generate a current detection signal according to a drive current of a motor as an object to be driven; a first amplifier configured to amplify the current detection signal; a second amplifier configured to multiply a voltage across the motor by a gain smaller than 1 and output the multiplied voltage; and a third amplifier configured to generate a back electromotive force detection signal according to a difference between an output of the first amplifier and an output of the second amplifier.