hdd (Total 819 Patents Found)

Hdd (819 Patents Found)
A hard drive write preamplifier includes a first differential pair of PNP BJTs having a first PNP BJT and a second PNP BJT; a first tail current source coupled into emitter of the PNP BJTs of the first differential pair; a second differential pair of NPN BJTs having a first NPN BJT and a second NPN BJT; a second tail c...
Data is stored in a hybrid HDD that includes a magnetic storage medium and a nonvolatile solid-state device according to multiple modes of operation: a full caching mode, a transitional caching mode, and an HDD only mode. The mode of operation may be selected based on the current condition or performance of individual ...
本発明の一局面は、中心孔を有し、該中心孔の半径をr 0 、ガラスブランクスの半径をr 1 としたとき、半径r=r 0 +(r 1 -r 0 )/2の位置の全周において、記録面に対して垂直方向に直線偏光を入射したときのリタデーシ...
A data stream received by a hard disk drive (HDD) is organized into at least one cluster having data blocks and spare data blocks and that is equal in size to an integer multiple of the number of sectors in a track of a disk of the HDD. A variable-index writing technique is used to write each data block of a cluster to...
Provided are a method of calculating repeatable runout (RRO) of a hard disk drive (HDD) in a frequency domain, a method of calculating a compensation value using the RRO calculating method, and recording media used therefore. The method of calculating RRO in a disk with a plurality of tracks includes: calculating first...
A method and apparatus for forming a magnetic layer having a pattern of magnetic properties on a substrate is described. The method includes using a metal nitride hardmask layer to pattern the magnetic layer by plasma exposure. The metal nitride layer is patterned using a nanoimprint patterning process with a silicon o...
The present invention relates to a hard disk drive system having overvoltage protection circuits for various types of overvoltage conditions. For example, the system comprises one or more hard disk drive integrated circuit chips residing on a board and a hard disk drive power plug receptacle residing on the board havin...
The present invention is directed towards reducing hard disk drive (HDD) activity by sharing the buffering activity between a provisional load sharing buffer (PLSB) and a time shift buffer (TSB). The HDD may be included in a digital host communications terminal (DHCT). Initially, the PLSB buffers initial streaming prog...
A HDD including a temperature sensor for sensing ambient temperature in the HDD, a spindle motor comprising a fluid dynamic bearing; and a controller configured for adjusting a rotational speed of the spindle motor based on the measured ambient temperature while a rigidity of the fluid dynamic bearing is maintained, an...
A hard-disk drive (HDD) with a current adjustment component is provided. The current adjustment component changes an amount of current to a magnetic-recording head of the HDD to cause a change in the strength of a magnetic write field produced by the magnetic-recording head in response to a determination that a present...
In a disk drive that uses large block sizes (e.g., 4 KB) for storing data and that responds to read and write requests from a client that uses small block sizes (e.g., 512 bytes), at least the starting and ending 4K blocks of read data are cached. Since much disk data that is the subject of a write request is first rea...
In one embodiment, a method of managing data includes managing a first copy of data in a solid state memory using a controller of the solid state memory, and managing a second copy of the data in a hard disk drive memory using the controller. In another embodiment, a system for storing data includes a solid state memor...
An information storage system including an enclosure, a rotating data storage medium including a surface, a slider including an ABS and an airborne oxidizable contaminant disposed in the enclosure. The system also includes an antioxidant absorbed onto the surface of the data storage medium. The antioxidant inhibits oxi...
Techniques for utilizing flash storage as an extension of hard disk (HDD) based storage are provided. In one embodiment, a computer system can store a first subset of blocks of a logical file in a first physical file residing on a flash storage tier, and a second subset of blocks of the logical file in a second physica...
降低硬盘耗电的方法及降低硬盘耗电的系统。该系统用于一电子装置在第一次开机时载入一预先载入程序时执行,该电子装置包括一硬盘及一预先载入程序模块,其中该硬盘与该预先载入程序模块电性连接,该预先载入程序模块用以执行该预...
PROBLEM TO BE SOLVED: To provide the stress relief working device capable of realizing stress relief for a head for a hard disk with high production efficiency. SOLUTION: This device is provided with the galvano optical system 15 having the scanning function oscillating laser beams from a YAG pulse laser oscillator 11 ...
A disk hard disk drive that includes a spindle motor and an actuator arm coupled to a base plate. A plurality of disks are coupled to the spindle motor and a plurality of heads are coupled to the actuator arm and the disks. The drive also includes a cover attached to the base plate. The cover and base plate enclose a h...
A data storage apparatus includes a non-volatile hard disk drive platter, a coupling interface for removably receiving a non-volatile solid state device operable as a cache. The data storage apparatus also includes a communication line functionally connected to the hard disk drive platter and the coupling interface and...
An image forming apparatus includes an HDD, an HDD confirming unit, a system control unit, and a non-volatile semiconductor storage device. The HDD stores user data created by a user. The HDD confirming unit determines whether or not the HDD is in an inoperative state. The system control unit separates the HDD from the...
本发明提供了一种用于硬盘驱动器马达的粘合剂树脂组合物,以及提供了一种使用该粘合剂树脂组合物制备的硬盘驱动器马达。所述用于硬盘驱动器马达的粘合剂树脂组合物含有:25-35重量份的双酚E-环氧树脂;10-25重量份的环氧树脂;10-20重量...
A data stream received by a hard disk drive (HDD) is organized into at least one cluster having data blocks and spare data blocks and that is equal in size to an integer multiple of the number of sectors in a track of a disk of the HDD. A variable-index writing technique is used to write each data block of a cluster to...
【課題】書き換え回数の制限がある不揮発性メモリにおいても、効果的に使用する不揮発性メモリの使用領域を節約することが可能なHDD内蔵型記録装置、および記録装置の提供を目的とする。 【解決手段】マイコン14は、EEPR...
A method and apparatus for manufacturing magnetic storage media is provided. A structural substrate is coated with a magnetically susceptible material, and a patterned resist layer is formed over the magnetically susceptible material. Atom groups are directed toward the substrate, penetrating the resist and implanting ...
A flex cable assembly has a flex cable with at least one distal end. At least one clamping device is coupled to at least one distal end, wherein at least one of the clamping device allows coupling to an actuator assembly and/or a base casting....
An improved carrier comprises a tray, an EMC component, and a bezel. The EMC component comprises a top spring set and a bottom spring set. Each spring set comprises a plurality of spring biased contacts connected by a plate and a bar so that each spring set moves in unison when depressed or released. Each tray has a fi...
An intelligent locking device comprises a microprocessor, a locking element and a control button electrically connected to the microprocessor respectively. The locking element locks a removable HDD to a computer. The control button generates trigger signals in response to manual push thereon. When receiving the trigger...
본 발명은 하드 디스크 드라이브를 구비한 방송 수신 시스템에서 하드 디스크 드라이브에 데이터 저장시 허가되지 않은 제3자로부터 하드 디스크 드라이브의 저장정보를 보호하는 하드 디스크 드라이브 복사 방지장치에 있어서, 입력되는 다...
In a portable computer having an external-memory loading/unloading mechanism and a resume function, presence or absence of change of the loaded condition of a hard disk pack is determined while the portable computer is in a resume mode when the portable computer is powered. If the condition has changed, a resume error ...
Embodiments disclosed herein generally relate to a head slider within disk drive data storage devices. A head slider comprises a head body having a leading portion on a leading edge and a trailing portion on a trailing edge. The leading portion includes a first leading pad disposed at the MFS and a second leading pad d...
An image forming apparatus includes an HDD, an HDD confirming unit, a system control unit, and a non-volatile semiconductor storage device. The HDD confirming unit detects a failure of the HDD and, in situations where a failure is detected, executes a confirmation process of detecting any operable portion of the HDD. T...
Methods and apparatus for forming substrates having magnetically patterned surfaces is provided. A magnetic layer comprising one or more materials having magnetic properties is formed on a substrate. The magnetic layer is subjected to a patterning process in which selected portions of the surface of the magnetic layer ...
A read head with two read sensors enables reading of a magnetically recorded medium of increased areal densities such as would be provided by two-dimensional magnetic recording. The two sensors, which may be formed in separate depositions, are arranged vertically relative to each other as top and bottom sensors, with a...
In one embodiment, a method of managing data includes managing a first copy of data in a solid state memory using a controller of the solid state memory, and managing a second copy of the data in a hard disk drive memory using the controller. In another embodiment, a system for storing data includes a solid state memor...