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US20110051580 |
DISK PROTRUSION DETECTION/FLATNESS MEASUREMENT CIRCUIT AND DISK GLIDE TESTER
The present invention relates to a disk protrusion detection/flatness measurement circuit and a disk glide tester, in which protrusion detection and average value calculation can be performed...
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US20110102932 |
METHOD OF MANAGING DEFECT AND APPARATUSES USING THE SAME
A method of managing a defect of a hard disk drive includes calculating a number of ECC symbols of every sector which becomes an object of a defect scan and setting a defect reference value based...
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US20120176877 |
INSPECTION METHOD AND INSPECTION APPARATUS OF MAGNETIC DISK
An inspection method and inspection apparatus of a magnetic disk are provided. A gliding test and a certification test are performed at the same time by simultaneously moving a head for the...
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US20120113785 |
DISK POSITION SYSTEM AND METHOD
A computing device and method determines a position of a disk when the disk works abnormally. The computer searches out problem disks by determining if each disk included in the just a bundle of...
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US20090268576 |
METHOD OF HANDLING SERVO SECTOR DEFECT
A method of handling a servo sector defect includes recognizing a first servo sector using a controller; determining whether the first servo sector has a defect; and when the first servo sector has...
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US20090196137 |
METHOD OF DETECTING BAD SERVO TRACK IN HARD DISK DRIVE
A method of detecting a bad servo track of an HDD includes measuring servo AGC of each of servo sectors of a servo track requiring determination of badness, calculating statistic data with respect...
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US20120207005 |
LOCKING MEDIA PUSHER
A locking media pusher is coupled to a servo controlled stage and includes a protruding probe and a locking mechanism. The stage moves forward and backward along a base toward and away from a...
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US20100020662 |
Automatic Unthread to Secure Tape From Sticking to the Head
A system and method for automatically unthreading a tape. The system and method determine whether the drive being at the stop state could cause the tape sticking condition in future after a defined...
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US20090316553 |
TAPE CONDITION IN A TAPE DATA TRANSFER APPARATUS
A tape data transfer apparatus operable to determine a tape damage condition of a tape received in the apparatus by determining a value representative of a tape pack size of the received tape and...
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US20110170392 |
STORAGE MANAGEMENT APPARATUS AND STORAGE MANAGEMENT METHOD
A reference-capacity calculating unit calculates a reference capacity of each of storage devices storing therein data on the basis of an actual capacity of each storage device. A difference...
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US20090003172 |
PLAYBACK DEVICE, RECORDING DEVICE, DISC MEDIUM, AND METHOD
The present invention aims to simply showing to the user what operations are available with the combination of the disc medium type, the application format of the data recorded/to be recorded on...
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US20070002712 |
Unbalanced disc detection and rotating speed control in disc reading apparatus
A method for detecting an unbalanced disc in a disc reading apparatus includes the following steps. Firstly, a disc is loaded into the disc reading apparatus. Then, a start-up procedure is...
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US20090285073 |
PATTERN TRANSFER APPARATUS AND PATTERN TRANSFER METHOD
A pattern transfer apparatus includes a storage-medium-surface detecting unit that detects a foreign substance or defect on a surface of a storage medium and specifies a position and a size of the...
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US20110255189 |
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....
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US20110149706 |
HIGH SENSITIVITY GLIDE SENSOR USING FRICTIONAL HEATING
A tool for testing a magnetic disk for use in a magnetic disk drive. The tool detects surface defects or asperities by detecting a change in electrical resistance corresponding to a temperature...
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US20080212437 |
Switch Device, Information Processing Device, and Reproduction Device
A reproduction system 100 includes a rotating body on which a rotary operation is conducted by a user, a rotary movement detector 810 that detects the rotation of the rotating body and outputs a...
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US20050259542 |
Reproduction device and method, recording medium, and program
The present invention relates to a playback apparatus and method, which are capable of reading streaming data recorded on an information recording medium in compliance with an FAT scheme...
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US20070242583 |
METHOD AND APPARATUS FOR MEASURING SURFACE STRUCTURE OF A NEAR-FIELD OBJECT
A method for measuring a surface structure of a near-field object is provided. A light source produces at least a first light beam and a second light beam; guiding the first light beam and the...
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US20090252012 |
DEFECT INSPECTION METHOD AND DISK DRIVE USING SAME
Provided are a disk defect inspection method and apparatus. The defect inspection method includes; determining an independent recording density value for disk defect detection in relation to disk...
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US20090028024 |
RECORD CARRIER, RECORDING METHOD AN DPLAYBACK DEVICE FOR CONTROLLING COPYRIGHT
When duplicating the record carrier the angle between the sync words S1 S2 can be preserved at the cost of a change in bit length, or the bit length can be preserved at the expense of changes in...
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US20090207711 |
INFORMATION RECORDING METHOD
If the amount of information recorded on a user data area of a recording medium is less than a predetermined value when a finalize process is performed on the information recorded in the user data...
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US20120182849 |
METHOD AND APPARATUS FOR CENTRING A DISK ON A SPINDLE, METHOD OF TESTING WITH A SPINSTAND AND SPINSTAND
There is disclosed herein a method and apparatus for centring a disk on a spindle, a spinstand and a method of testing with a spinstand. The method of centring includes attaching the disk to the...
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US20090262621 |
METHOD AND APPARATUS FOR INSPECTING A PATTERN SHAPE
An apparatus for inspecting a pattern shape of a magnetic record medium or its stamper includes: a moving mechanism, on which an object to be inspected where a pattern is formed is placed and which...
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US20100296379 |
ERROR CORRECTING CIRCUIT AND DISK STORAGE DEVICE
According to one embodiment, an error correcting circuit includes: a marker decoder configured to sample 2-bit markers from a data string and, from a plurality of sample values of the 2-bit...
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US20110080820 |
METHOD OF SETTING ZONE LAYOUT OF RECORDING MEDIUM, AND APPARATUS USING METHOD
A data storage device determines a zone layout based on a quality evaluation factor. The zone layout is designed such that a measurement value of the quality evaluation factor for each track in...
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US20110235490 |
AMPLITUDE-BASED APPROACH FOR DETECTION AND CLASSIFICATION OF HARD-DISC DEFECT REGIONS
In a hard-disc drive, a defect region on the hard disc is classified as corresponding to either thermal asperity (TA) or media defect (MD) by generating two statistical measures. A first measure...
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US20090135697 |
METHOD FOR DISTINGUISHING OPTICAL DISCS
The invention is to provide a method for distinguishing optical discs, which first locks a focus on a data layer of an optical disc to cross the grooves and the lands of the optical disc, then...
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US20100085855 |
METHOD AND DEVICE FOR DETECTING SHAPE OF SURFACE OF MEDIUM
A defect generated during a nano-imprint process is inspected by a scatterometry method. The scatterometry method is to illuminate the surface of a medium with light having a plurality of wave...
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US20090073836 |
Disk decision method and optical disk drive using the disk decision method
A method of determining the type of disk loaded on an optical disk drive, and an optical disk drive using the method are provided. The disk decision method includes operations of detecting a change...
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US20120281515 |
DISC DRIVE SYSTEM
A disc drive may provide data communications to a host using a universal serial bus (“USB”) interface. Activation of the USB interface may be triggered upon insertion of a disc into the disc dri...
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US20110158073 |
OPTICAL CHECKING METHOD AND APPARATUS FOR DEFECTS IN MAGNETIC DISKS
An apparatus for optically checking magnetic disk defects that makes possible more accurate determination of positions of minute defects by illuminating an area greater than a checkup area with an...
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US20100265806 |
ROTATION ANGLE SENSOR
A rotation angle sensor includes a rotation shaft, a yoke which is made from a magnetic permeable material and includes a first disk portion, a second disk portion and a connection portion...
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US20090028025 |
Information processing apparatus and method, program, and recording medium
An information processing apparatus which detects concomitant information associated with a time at which data satisfying a preset condition is supplied within a continuous period of time from...
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US20100080101 |
SYSTEM AND METHOD FOR ANALYZING MAGNETIC MEDIA SURFACES FOR THERMAL ERASURES AND OTHER CHARACTERISTICS
Analyzing magnetic media surfaces for thermal erasures and other characteristics is described. The system includes a drive channel module configured to measure servo automatic gain control values...
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US20090268575 |
Systems and Methods for Reducing Attenuation of Information Derived from a Defective Medium
Various embodiments of the present invention provide systems and methods for data regeneration. For example, a method for data regeneration is disclosed that includes receiving a data input derived...
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US20080159104 |
INFORMATION RECORDING MEDIUM EVALUATION METHOD, INFORMATION RECORDING MEDIUM, METHOD FOR MANUFACTURING INFORMATION RECORDING MEDIUM, SIGNAL PROCESSING METHOD AND ACCESS CONTROL APPARATUS
A method for rating an information recording medium according to the present invention includes the steps of: receiving a digital read signal, which has been generated based on an analog read...
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US20120307616 |
QUICK ACCESS TO DISC MANAGEMENT INFORMATION
The invention relates to a method and a recording device for easy and quick access to record carrier management information stored on the record carrier itself. The invention further relates to a...
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US20120155238 |
STORAGE DEVICE AND INFORMATION CORRECTION METHOD
An information correcting method includes: detecting a first pattern in a radial direction and a second pattern formed obliquely to the radial direction on a track traversing the first and second...
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US20090040898 |
METHOD AND DEVICE FOR SIMULATING A MULTI-LAYER OPTICAL STORAGE MEDIUM
A method, a device, and a computer-readable medium for simulating a multilayer optical storage medium are disclosed. A multiple-layer optical storage medium is simulated by using a set of multiple...
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US20080123499 |
Image Recording Device and Image Recording-Control Method
In an image-recording device using a disk-type recording medium generated under the DVD+RW standard, a disk information-acquisition unit 250 acquires information about a disk 49, a...
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US20120188862 |
APPARATUS AND METHOD FOR CERTIFYING A MAGNETIC RECORDING DISK
Apparatuses and methods for certifying a magnetic recording disk (102) are disclosed herein, in a described embodiment, the apparatus (100) comprises a certifier head (104) for testing the disk's...
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US20090290462 |
SIGNAL PROCESSING DEVICE FOR OPTICAL DISC, INTEGRATED CIRCUIT, OPTICAL DISC DEVICE, AND OPTIMUM RECORDING FOCUS POSITION DETECTING METHOD
An optical disc signal processing device includes a focus position determining section, wherein when test recording is performed while changing a focus position through a plurality of positions,...
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US20110317535 |
Multilayered Optical Disk And Its Recording Method
A multilayered optical disk an information recording method and information reproducing method utilizing the disk includes three or more recordable or rewritable information recording layers, which...
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US20100246358 |
OPTICAL DATA STORAGE MEDIA HAVING HIGH PRESSURE-AT-BREAK STRENGTH
Optical information media having high pressure-at-break values, and methods for determining pressure-at-break values are disclosed. The media have high structural integrities, and are designed to...
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US20100124155 |
ROTARY DISK ECCENTRICITY MEASUREMENT METHOD, ROTARY ENCODER, AND IMAGE FORMING APPARATUS INCLUDING THE ROTARY ENCODER
An eccentricity measurement method of measuring the eccentricity of a rotary disk of a rotary encoder includes forming, on the rotary disk, at least one first straight-line pattern group in a...
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US20120213047 |
METHOD AND APPARATUS FOR MOUNTING A DISC
Aspects of the disclosure provide a method for mounting a storage disc. The method includes receiving data stored at a location on the storage disc. The location on the storage disc used for...
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US20120082019 |
INFORMATION RECORDING DEVICE, INFORMATION RECORDING METHOD, AND ELECTRONIC APPARATUS
An information recording device includes: a magnetic disk; an identify module; and a record module. The magnetic disk includes information tracks for recording information by a shingle recording...
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US20110103210 |
METHOD AND APPARATUS FOR PROCESSING DEFECT IN DATA STORAGE MEDIUM
A method of detecting defects of a recording medium comprises detecting a number of error-corrected error correction code symbols in each of a plurality of sectors in the recording medium,...
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US20080008075 |
Method and apparatus for inspecting a recording medium and for inspecting a recording medium drive
An apparatus is provided for inspecting a recording medium, for thereby detecting a defect in the recording medium, in which the apparatus includes inspection subjects made up of first to fourth...
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US20060120239 |
Recording control device and method, program, and recording medium
The present invention relates to a recording control apparatus and a recording control method which can improve the convenience of a storage medium and also to a program and a storage medium. Image...
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