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Optical pickup having thermal expansion compensation
An aspect of the invention provides an optical pickup in which an optical axis is not displaced even if ambient temperature is changed. The optical pickup of...
Method of collecting information in system network
To quickly establish an inferring result when a problem is detected in an operation management system equipped with a rule-based inference processing function,...
Management method and system for managing replication by taking into
account cluster storage accessibility a...
A management system, which manages a host computer and a storage system, holds cluster information, specifies an active-state host computer and an ...
Semiconductor integrated circuit device for scan testing
A scan chain group structure in which a group of scan chains formed for each clock tree system in an LSI is subjected to a reconnection process so that the scan...
Storage management server and storage configuration relocating method
A storage management server collects, stores and displays positions, temperatures and temperature threshold values of physical storage devices from a storage...
Power control of secondary copy storage based on journal storage usage and
accumulation speed rate
A second storage system comprises a restore control unit for controlling restoration processing, in which a data element in a journal stored in a journal...
Storage device and control method for the same
A storage device is provided with: a first management section that manages a storage area provided by one or more hard disk drives on a basis of a predetermined...
Method for speeding up page table address update on virtual machine
A method is provided which eliminates redundancy from the shadow PT operation performed by the virtual machine monitor (VMM) when the guest operating system...
Storage apparatus and storage area allocation method
A storage apparatus is provided with a storage area for storing data sent from a host computer, and a virtual/logical volume to which a dynamically variable...
Method and system for migration between physical and virtual systems
A method of migrating a computer system between a virtualized environment and a non-virtualized environment comprises configuring one or more storage volumes...
Backup data management method in which differential copy time is taken
Provided is a computer system, comprising a storage system and a management computer. The management computer manages differential copy start times,...
Storage system, load distribution management method, and storage medium
A host computer includes a virtual disk control part for controlling an input/output request into a virtual disk. A plurality of storage subsystems includes a...
Flash memory module, storage apparatus using flash memory module as
recording medium and address translation...
A purpose of the invention is to immediately return the operation in a flash memory module from low power consumption mode to regular mode. A flash memory...
Storage system effectively using free ports
A first free port present in a controller or a switch device is physically connected to a second free port present in a switch device (switch device in another...
Disk array subsystem and control method thereof
This disk array subsystem includes a data input/output unit for inputting and outputting data in and from the network, a connecting unit for connecting the data...
Storage system and control method of storage system
The storage system includes a first storage subsystem having a first logical volume to be accessed by a host computer, and a second storage subsystem connected...
Method and program for supporting setting of access management information
In order to limit host computers permitted to control a storage area from host computers, provided is a storage management computer coupled to one or more host...
Presence information management system and presence information management
When starting subscribe for acquiring presence information, there is no need of acquiring an identifier of the presentity or an identifier of the group, which...
Method and apparatus for improving file access performance of distributed
Embodiments of the invention provide methods and apparatus for improving the performance of file transfer to a client from a distributed storage system which...
Method for analyzing defect data and inspection apparatus and review
The distribution states of defects are analyzed on the basis of the coordinates of defects detected by an inspection apparatus to classify them into a...
Suspension control apparatus
The present invention provides a suspension control apparatus capable of an excellent vibration control by a model thereof designed to incorporate nonlinearity...
Electron beam inspection system and an image generation method for an
electron beam inspection system
An inspection system uses a scanning electron microscope that detects a high-precision electron beam image, and at the same time removes restrictions for a low...
Appearance inspection apparatus with scanning electron microscope and
image data processing method using...
The present invention provides an appearance inspection apparatus that allows a user to give precedence to either defect detection performance or throughput....
A transmitter suppresses peak power occurring in a transmission signal. The transmitter generates peak suppression signals for suppressing the peak power in the...
Baseband demodulation architecture for adaptive modulation method
A wireless communication device for a communication system including data channels and control channels is disclosed. This device includes a receive section for...
Optical pickup lens capable of detecting the tilt state
An optical pickup lens includes a first surface to focus laser light for recording/playback on an optical disc, a second surface formed outside the first...
Optical information reproducing apparatus, optical information recording
and reproducing apparatus
In holographic recording by the angle multiplexing method, in order to allow a signal beam and a reference beam to sufficiently overlap with each other in a...
Reproduced signal evaluation method and write adjustment method
The present invention aims to provide a reproduced signal evaluation method and a write adjustment method for offering a Blu-ray disc having a large storage...
Adjusting method for recording condition and optical disc device
A method for evaluating reproduced signal wherein when Euclidean distance is calculated by judging the coincidence between a binary bit array and a ...
Test-write method, information recording method, and information recording
A test-write method for accurately and quickly determining recording conditions, and an apparatus suitable therefor. In a 2T-based strategy, recording pulse...
Optical disc drive
When a multilayered optical disc is used, the signal-to-noise ratio of a read signal is decreased as effective reflectance is extremely low due to the influence...
Optical disk apparatus
A servo control of an optical disk apparatus increases a suppression degree of an iterative learning control system, against a frequency disturbance of integer...
Circuit for suppressing electromagnetic interference, implementation
structure and electronic apparatus...
There is provided a circuit substrate to be mounted in an electronic apparatus, and the circuit substrate has a power supply and a GND. The GND of the circuit...
Flat display apparatus to optimally radiate heat
A flat display apparatus includes a display unit; a housing configured to accommodate the display unit; a support member configured to support the housing; and...
System, method and apparatus for flexure-integrated microactuator
A piezo in-tongue microactuator includes a suspension assembly with a flexure tongue. The tongue has two slots that accept piezo actuators. The tongue also has...
Method and apparatus for forming an opening in a base-metal layer of an
electrical lead suspension (ELS) to...
An apparatus and method for forming an opening in a base-metal layer of an electrical lead suspension (ELS) to increase the impedance. The method provides a...
Thin film perpendicular magnetic recording head, their fabrication process
and magnetic disk drive using it
Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a...
Method of multi-angled bump processing for magnetic pole fabrication and
A system according to one embodiment includes a magnetic pole; a bump structure above the pole, the bump structure having a first surface oriented at a first...
Airflow diverter in a hard disk drive system
An airflow diverter in a hard disk drive system. A top portion configured to couple with a top housing of the disk drive system. A thickness configured to...
Slider fly-height control in a hard disk drive
In fly-height control system, a slider comprises a spin torque oscillator that is configured for generating an RF carrier signal which is out-of-band of a...
Method for writing servo patterns and disk drive including a controller
for writing servo patterns according to...
A method for writing servo patterns onto a disk of a disk drive. The method includes providing a plurality of different drive currents for an actuator while...
Predicting operational problems in a hard-disk drive (HDD)
A method and apparatus for determining the likelihood that a hard-disk drive (HDD) will experience an imminent error in operation is provided. The HDD comprises...
Liquid crystal display device and manufacturing method thereof
A liquid crystal display device where both improvement in light transmittance of a liquid crystal display panel having a photo alignment film and suppression of...
Display device and planar light source device
The present invention relates to a technique which can make a backlight used in a liquid crystal display device thin and light-weighted. The present invention...
The present invention improves the reliability of a display apparatus by suppressing the temperature rise of the display apparatus mounted on a wall. The...
In a display device which mounts drive circuits and a display control circuit on a substrate which constitutes a display panel, signal lines can be arranged on...
Image display apparatus
In organic EL display apparatuses, when the reset operating time required for compensating variations in the OLED drive TFT voltage threshold is too short then...
Plasma display apparatus
A plasma display apparatus having a priming discharge region PDC partitioned from a display discharge cell DDC, by a traverse rib, at a side where the second...
Piezoelectric thin film elemental device, sensor and actuator
A piezoelectric thin film element has a piezoelectric thin film on a substrate, the piezoelectric thin film has a (K.sub.1-x,Na.sub.x)NbO.sub.3thin film...
According to an aspect of the present invention, there is provided a power tool including: a housing having a suction port formed thereon to introduce an...