Matches 1 - 32 out of 32


Match Document Document Title
US20140078610 MOTOR DRIVE DEVICE, MAGNETIC DISK STORAGE DEVICE, AND ELECTRONIC APPLIANCE  
A motor drive device has: a power supply line to which a power supply voltage is applied; a ground line to which a ground voltage is applied; and a first motor driver that, when the power supply...
US20140320998 DISK DRIVE WITH IMPROVED SPIN-UP CONTROL  
A disk drive is disclosed comprising a head actuated over a disk, and a spindle motor operable to rotate the disk. The spindle motor operates according to a plurality of electrical cycles over a...
US20060077586 Spindle motor driving method and apparatus  
A spindle motor driving method and apparatus are provided. The method includes detecting the rotation speed of a spindle motor and heating a hard disc drive until the spindle motor reaches normal...
US20140340783 BACK ELECTROMOTIVE FORCE MONITORING CIRCUIT, MOTOR DRIVE DEVICE, MAGNETIC DISK STORAGE DEVICE, AND ELECTRONIC APPLIANCE  
A back electromotive force monitoring circuit has a speed detection voltage generator which biases a back electromotive force generated by a voice coil motor with a predetermined reference voltage...
US20050174678 Stepping power consumption levels in a hard disk drive to maximize performance while minimizing power consumption  
Attributes of a hard disk drive are stepped between different power consumption levels to optimize the trade-off between minimizing power consumption and maximizing performance depending on...
US20120229930 SELF-SERVO WRITER WITH ITERATIVE LEARNING CONTROL MECHANISM AND METHOD OF OPERATION THEREOF  
A method of operation of a servo writing system includes: initializing a disk and a head positioned over the disk for writing a servo pattern on the disk; calculating a target velocity profile for...
US20150236624 CURRENT DETECTION CIRCUIT, MOTOR DRIVING DEVICE, MAGNETIC DISK STORAGE DEVICE, AND ELECTRONIC APPLIANCE  
A current detection circuit for detecting a maximum current value in a three-phase motor includes an identifier configured to identify a maximum current phase having the maximum current value...
US20080278841 SELECTIVELY INHIBITING TRANSDUCER OUTPUT RESPONSIVE TO DETECTED JERK  
Various embodiments relate to selectively inhibiting output from a transducer in response to the rate of change of acceleration that is experienced by the transducer. The rate of change of an...
US20080019246 Magnetic and optical rotating storage systems with audio monitoring  
An integrated circuit (IC) for controlling a rotating data storage device comprises a drive module that is implemented by the integrated circuit and that at least one of processes data, stores...
US20080144208 MULTIPLE DISKS IN A SINGLE DISK PACKAGE  
A disk drive having a single drive motor and multiple platters that incorporates two discrete data paths, actuators and heads to the disk platters. Utilizing the economy of very large capacity...
US20080218894 SPINDLE MOTOR, AND RECORDING AND REPRODUCING APPARATUS EQUIPPED WITH THE SAME  
It is an object of the present invention to make it possible to suppress, to the maximum extent possible, deformation of the recording medium caused by clamping in a spindle motor having a...
US20140376125 CONTROL SYSTEM FOR HARD DISKS  
A control system for a group of hard disks includes a power supply and a connecting module. The power supply supplies power for the group of hard disks. The connecting module couples the power...
US20100157463 DISK DRIVE SPIN CONTROL  
A disk drive configured to control spindle spin is provided. The disk drive includes a spindle motor for spinning a disk configured for storing data, a nonvolatile memory comprising instructions...
US20110122524 STORAGE DEVICE  
The present invention makes is possible to appropriately set the power saving control of the storage device from the management device of the storage device. In addition, the storage device...
US20060114594 Electronic device comprising recording and reproducing unit  
An electronic device capable of removably mounting a recording and reproducing unit such as a hard disk drive and the like is provided, while giving consideration to sound proofing measures in the...
US20140313611 CONTROL CIRCUIT FOR HARD DISK DRIVE  
A control circuit for a hard disk drive (HDD) includes a control chip, a connector connected between the control chip and a motherboard, and a function transform circuit connected between the...
US20120105998 METHOD OF DETECTING TOUCHDOWN OF MAGNETIC HEAD USING TIMESTAMPS, AND MAGNETIC DISK DRIVE TO WHICH THE METHOD IS APPLIED  
According to one embodiment, a method of detecting contact of a magnetic head with a magnetic disk by changing the dynamic flying height of the magnetic head in a magnetic disk drive is disclosed....
US20140078611 Method and System for Preventing Unreliable Data Operations at Cold Temperatures  
Systems and methods for reducing problems and disadvantages associated with protecting data during cold excursions are provided. A method for preventing unreliable data operations at cold...
US20100053795 MAGNETIC RECORDING AND REPRODUCING APPARATUS HAVING A MAGNETIC READ HEAD WITH A SPIN-TORQUE OSCILLATOR  
A magnetic recording and reproducing apparatus includes a magnetic head that has a spin-torque oscillator and a magnetic disk and the spin-torque oscillator detects a magnetic field from the...
US20120127600 STORAGE CONTROL DEVICE AND ROTATION SPEED CONTROL METHOD FOR STORAGE DEVICE  
To provide a storage control device capable of changing the rotation speed of storage devices. A plurality of hard disk drives 1 is mounted in the device mounting unit 7. The rotation speed...
US20100238583 DISK DEVICE  
According to one embodiment, a disk device rotates a disk information storage medium to record and reproduce information on the information storage medium by use of a head that slides in contact...
US20100195243 Variable Spindle Speed Control for Data Storage Devices  
In a particular embodiment, a system is disclosed that includes a solid-state data storage medium, a disc data storage medium, and a controller adapted to selectively adjust a spindle speed...
US20170125051 Variable Spinning Rates for Hard Disk Drives  
Systems and techniques for varying the spindle speed of a hard disk drive are disclosed. In some embodiments, the systems and techniques involve a hard disk drive (HDD) that is accessible to a...
US20160329077 MOTOR SPIN UP WITH AUXILIARY POWER BOOST  
An apparatus and associated method that contemplate spinning up an electric motor to an operational speed by accelerating the motor with a primary power, and before the motor is accelerated to the...
US20160284379 STORAGE CONTROL APPARATUS, STORAGE APPARATUS, AND COMPUTER-READABLE RECORDING MEDIUM HAVING STORED THEREIN STORAGE CONTROL PROGRAM  
A checking unit configured to check whether or not each of the plurality of storage devices is a speed-changeable storage device capable of processing data at a plurality of rotation speeds, and a...
US20160148640 PERFORMANCE PACING FOR HARD DISK DRIVES  
To provide enhanced operation of data storage devices and systems, various systems, apparatuses, methods, and software are provided herein. In a first example, a data storage device is provided....
US20160012845 DATA STORAGE DEVICE EMPLOYING SLIDING MODE CONTROL OF SPINDLE MOTOR  
A data storage device is disclosed comprising a head actuated over a disk, and a spindle motor configured to rotate the disk. A speed of the spindle motor is sampled, and an error signal is...
US20150380045 DISK DRIVE WITH IMPROVED SPIN-UP CONTROL  
A disk drive is disclosed comprising a head actuated over a disk, and a spindle motor configured to rotate the disk. The disk drive further comprises control circuitry configured to measure a...
US20150364156 CURRENT-BASED ENVIRONMENT DETERMINATION  
Provided is an apparatus including a motor configured to rotate a rotating member at a rotational speed based on an applied current; and a controller configured to modify one or more operating...
US20130070363 SYSTEMS AND METHODS FOR DATA THROTTLING DURING DISK DRIVE POWER DOWN  
Some embodiments of the invention are directed to a data storage system that includes a disk and solid-state non-volatile memory (NVM). During a power failure, the data storage system may use back...
US20120250179 STORAGE SYSTEM, STORAGE CONTROL APPARATUS, AND STORAGE CONTROL METHOD  
In a storage system, when power supply to HDDs is instantaneously interrupted, a spin up controller of a magnetic disk apparatus spins up the HDDs. On the other hand, based on a response for an...
US20120014015 HARD DISK DRIVE HAVING REGIONS CORRESPONDING TO DIFFERENT SPEEDS AT WHICH STORAGE SURFACE ROTATES  
A hard disk drive includes a storage surface, a motor, a read/write had, and a number of regions into which the storage surface is divisible. Data is writable to and data is readable from the...

Matches 1 - 32 out of 32