| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 369530410 | Of record carrier | 64 |
| 20080212437 | Switch Device, Information Processing Device, and Reproduction Device - A reproduction system | 09-04-2008 |
| 20090003172 | 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 the disc medium, and the information processing apparatus being used by the user. | 01-01-2009 |
| 20090028024 | RECORD CARRIER, RECORDING METHOD AN DPLAYBACK DEVICE FOR CONTROLLING COPYRIGHT - When duplicating the record carrier the angle between the sync words S | 01-29-2009 |
| 20090028025 | 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 input data that is temporally continuously input is disclosed. The apparatus includes: a change information detecting means for detecting temporally continuous characteristic quantity change information based on the characteristic quantity in a first period's worth of input data; an accumulation means for accumulating the characteristic quantity change information to obtain characteristic quantity change information associated with temporally continuous input data for a second period; a concomitant information detecting means for detecting the concomitant information based on the characteristic quantity change information; an accumulated amount identifying means for identifying the amount of characteristic quantity change information; and a priority determining means for determining the priority of the processes of the change information detecting means and the concomitant information detecting means. | 01-29-2009 |
| 20090040898 | 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 single-layer media, wherein the number of multiple single-layer media is equal to or smaller than the number of multiple layers of the multiple layer optical storage medium, and each single layer of the set of multiple single-layer media comprises a copy of the corresponding layer of the multiple-layer medium. This is transparent to any application software accessing a device having such a single-layer medium inserted therein by the drive reporting to the application that a multi-layer optical storage medium has actually been inserted into the device for reading or writing. The device may be comprised in an audio-visual player and/or a recorder such as a DVD recorder. | 02-12-2009 |
| 20090135697 | 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 starts testing and counting the time for testing, records a detected RF signal, checks if the time for testing reaches a predetermined time, continues locking the focus on the data layer to test if it has not, finds out the maximum intensity of the detected RF signal among the recorded RF signals, and compares the maximum intensity of the detected RF signal with the parameters regarding formats of optical discs previously stored in order to correctly distinguish the optical disc. | 05-28-2009 |
| 20090196137 | 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 to the measured servo AGC of each servo sector, and determining whether the servo track is bad based on the calculated statistic data. Since the badness of a servo track is determined based on the statistic data of the servo AGC, a bad servo track generated due to a change in the overall magnitude of a servo signal is easily detected so that reliability in the detection of a detective servo track can be improved. | 08-06-2009 |
| 20090207711 | 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 area, dummy information is recorded in the recorded area such that the amount of the information is equal to or greater than the predetermined value, and management information for managing the dummy information as a file is recorded in the user data area, thereby realizing interruption of the finalize process in the recording medium and enabling determination of whether or not a disk is a disk on which a finalize process has been interrupted based on only information recorded on the disk. | 08-20-2009 |
| 20090213712 | Method and System for Distinguishing Spatial and Thermal Defects on Perpendicular Media - Disclosed are a method and system for distinguishing spatial and thermal defects on perpendicular media. The magnetic domains of the perpendicular media are oriented to have a first polarity, scanned using a read head, oriented to have a second polarity and scanned again. The signals from the read head are combined to produce output signals having improved signal to noise ratios from which the locations of spatial and thermal defects can be identified and distinguished. | 08-27-2009 |
| 20090252012 | 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 drive component factors excepting a disk of the disk drive, and performing a disk defect inspection using the independent recording density value for disk defect detection. | 10-08-2009 |
| 20090262621 | 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 moves the object to be inspected in a radial direction while rotating the object; an irradiating optical system that applies illuminating light of a wide band including far ultraviolet light to the object to be inspected moved in the radial direction while rotating the object by the moving mechanism in a polarized state suitable for the object to be inspected from an oblique direction; a detecting optical system that detects zero-order reflected light generated from the object to be inspected irradiated by the irradiating optical system; and a shape inspection unit that inspects a pattern shape formed on the object to be inspected based on a spectral reflectance waveform obtained by dispersing the detected zero-order reflected light, thereby inspecting the pattern shape at a high speed and with high sensitivity. | 10-22-2009 |
| 20090268575 | 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 from a medium, determining a media defect corresponding to the data input, and determining an attenuation factor associated with the defective medium. Based at least in part on the determination that the medium is defective, amplifying the data input by a derivative of the attenuation factor to regenerate the data. | 10-29-2009 |
| 20090268576 | 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 a defect assigning at least a part of a next data sector to be assigned to the first servo sector to a second servo sector having no defect. | 10-29-2009 |
| 20090285073 | 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 foreign substance or defect; a relative-position adjusting unit that adjusts a relative position on a contact surface between the surface of the storage medium and a transfer pattern surface of a transfer master, and a relative-position-adjustment instructing unit that calculates an adjusted value of the relative position according to a detection result, and instructs the relative-position adjusting unit to adjust the relative position based on the adjusted value. | 11-19-2009 |
| 20090316553 | 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 comparing the value representative of tape pack size with a tape pack size reference value that is read from the cartridge. | 12-24-2009 |
| 20090323490 | OPTICAL DISK DEVICE AND OPTICAL DISK PROCESSING SYSTEM HAVING OPTICAL DISK DEVICE - An optical disk processing system having a recording unit and a printing unit is provided. An optical disk processing system comprises a printing unit and a recording unit. An optical disk is driven with a low torque and then with a high torque. Based on reaching times until target rotational speeds are reached when the optical disk is driven with the low torque and the high torque, a type of the optical disk is judged. Loading of a plurality of optical disks is detected when the judgment results for low torque and for high torque do not match. | 12-31-2009 |
| 20100020662 | 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 dwell time (e.g., 20 minutes). The tape sticking tends to increase with time and humidity. Moreover, it is known that worn tape is stickier than new tape. With a plurality of attempts (e.g., four attempts) of moving tape (e.g., every 5 minutes), the drive is able to identify whether the tape needs to be unthreaded. Such a system allows a tape drive to handle the tape in safety at severe condition for the sticking tape, and minimize the penalty for the response to the command in normal condition. | 01-28-2010 |
| 20100080101 | 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 for a magnetic media surface that represent the amount of gain applied by the drive channel module to a preamble signal recorded on the magnetic media surface. The gain control values are then acquired according to certain measurement parameters. The gain control values are then arranged by proximity to each other and organized to generate images that represent changes in the characteristics of the magnetic media surface. Analysis of the images then detects patterns that represent changes in the characteristics of the media surface and determines measurement parameters that coincide with the change in the characteristic. | 04-01-2010 |
| 20100085855 | 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 lengths by means of a first illuminator through a half mirror and an objective lens and cause light reflected on the medium to be incident on a spectrometer through the objective lens and the half mirror. A second illuminator illuminates a foreign material or scratch on the surface of the medium from an oblique direction with respect to the surface of the medium. Light is scattered from the foreign material or scratch and detected by first and second detectors. The first detector is placed in a direction defining a first elevation angle with the surface of the medium. The second detector is placed in a direction defining a second elevation angle with the surface of the medium. When coordinates of a defect that are obtained by the scatterometry method match coordinates of the foreign material or scratch, an inspection device determines that the defect is not generated during the nano-imprint process. When the matching is negative, the inspection device determines that the defect is generated during the nano-imprint process. | 04-08-2010 |
| 20100110856 | Recording medium, recording/reproduction device and method for controlling recording/reproduction device - A magnetic recording medium includes: tracks each including a magnetic recording section in which information is recorded and a non-magnetic-recording section in which no information is recorded; and nonmagnetic guide sections magnetically separating the tracks from one another. The non-magnetic-recording section is formed integrally with nonmagnetic guide sections. The magnetic recording medium includes at least one pair of a first region in which at least a portion of each of the respective non-magnetic-recording sections of first and second tracks and a portion of a magnetic recording section of a third track coincide with one another at a position along a direction in which the tracks extend; and a second region in which at least a portion of each of the respective non-magnetic-recording sections of the first and third tracks and a portion of a magnetic recording section of the second track coincide with one another at a position along the direction in which the tracks extend. | 05-06-2010 |
| 20100118678 | METHOD FOR TESTING MAGNETIC RECORDING MEDIUM AND METHOD FOR PRODUCTION OF MAGNETIC RECORDING MEDIUM INCLUDING TESTING STEP - A method for testing a magnetic recording medium tests a magnetic recording medium provided on a non-magnetic substrate ( | 05-13-2010 |
| 20100124155 | 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 different radial direction including a plurality of straight-line patterns that are equally spaced in the radial direction and extend in a normal line direction from a base point a predetermined distance away from a center of a radial scale of the rotary disk; placing the rotary disk on a table including at least one second straight-line pattern group including straight-line patterns; and measuring the amount and the direction of the eccentricity of the rotary disk in accordance with the position of the straight-line pattern of the first straight-line pattern group that coincides with the position of the straight line pattern of the second straight-line pattern group in the radial direction. | 05-20-2010 |
| 20100157766 | Predicting cartridge failure from cartridge memory data - Techniques are described for predicting data cartridge failure based on analysis of data retrieved from an associated cartridge memory chip. In one embodiment, a system includes a chip reader that retrieves data from a cartridge memory chip of a data cartridge, and a computing device that receives the data from the chip reader, analyzes the data, and generates information regarding a health status of the data cartridge based on the analysis. The analysis may be based on execution of an algorithm that is developed from a set of data, stored in a database, that identifies characteristics of data cartridges with a good health status and differentiates them from data cartridges with a bad health status. | 06-24-2010 |
| 20100214896 | MULTILAYERED OPTICAL DISC AND ITS RECORDING METHOD - In an optical disc having N (N is an integer larger than or equal to 3) information recording layers of rewritable or recordable type, each of the information recording layers includes an test area to adjust conditions for recording and reproduction and the test areas are arranged so that the radial positions thereof overlap those of other layers. Recording test is performed only to an area smaller than or equal to 1/N of the test area of each layer and any other area is always unrecorded (write inhibited). | 08-26-2010 |
| 20100214897 | METHOD AND APPARATUS FOR PROCESSING OPTICAL DISC SIGNAL - According to the present invention, whether recoding pits are larger or smaller than diffraction limit is determined. Then, a signal process suitable for processing of the recording pits larger than the diffraction limit and a signal process suitable for processing of the recording pits smaller than diffraction limit are divided to divisionally perform equalizer processing. The respective signals subjected to the divisional processing are synthesized to obtain a processed output signal. A reproduction signal with reduced impact of intersymbol interference is thus obtained. | 08-26-2010 |
| 20100246357 | METHOD FOR DETECTING SURFACE DEFECTS IN PATTERNED MEDIA - An optical defect detection method for patterned media includes: irradiating a laser beam onto a patterned medium and obtaining reflected light by reflection very close to a sample; outputting the reflected light as an analog electrical signal from an optical receiver; converting the analog signal to a digital signal; obtaining a surface profile in a track direction by sampling the analog signal; obtaining a servo area profile by setting a slice for detecting servo area; calculating an average value in a track width direction based on plural servo area profiles; generating a master servo area profile based on the average value; obtaining a difference between the master servo area profile and the specific servo area profile; and detecting the presence of a defect including surface roughness, process fluctuation, and adhesion of foreign matters, from a differential waveform. | 09-30-2010 |
| 20100246358 | 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 confer greater resistance to delamination forces as compared to conventional optical information media. | 09-30-2010 |
| 20100265806 | 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 magnetically connecting the first disk portion and the second disk portion, the first disk portion and the second disk portion being provided on the rotation shaft in an axial direction of the rotation shaft separately, a permanent magnet which is provided between the first disk portion and the second disk portion, and has an annular shape, and a magnetic field detection section which generates an output signal in response to an intensity of a magnetic field formed by the permanent magnet during a rotation of the rotation shaft. A center of the permanent magnet is deviated from a center of the rotation shaft so that a distance between the magnetic field detection section and an outer circumference of the permanent magnet in a direction perpendicular to the axis direction of the rotation shaft is gradually changed in accordance to the rotation of the shaft. | 10-21-2010 |
| 20100265807 | TAPE DATA ASSESSMENT - A method for certifying data on tape cartridges for a library with a first tape cartridge that possesses a medium auxiliary memory device, a medium auxiliary memory reader/writer, a first tape drive and a second tape drive, a shelf system, and access to a memory device containing a media lifecycle management data base. After a period of time from when data was originally stored on the tape first cartridge, a portion of data residing on the first tape cartridge is read. The portion of data is assessed as to whether a percentage of the portion contains an expected data structure and if the percentage exceeds a predetermined threshold, a data recovery sequence is initiated. | 10-21-2010 |
| 20100271918 | METHOD FOR DETERMINING TYPE OF DISK AND APPARATUS THEREOF - A method for determining a type of a disk and an optical storage apparatus thereof are provided. The method includes when the disk placed in the optical storage device is not a blank disk, determining whether the phases between a first signal and a second signal of the disk are the same or not; and determining that the disk is a low to high (LTH) data disk or a high to low data disk (HTL) data disk upon whether the phases of the first signal and the second signal are the same or not. Therefore, the reading parameters are correspondingly loaded in the optical storage device according to the type of the disk. | 10-28-2010 |
| 20100296379 | 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 markers, determine whether there is an occurrence of an error on the 2-bit markers, of an insertion error, or of a deletion error; and an error correcting module configured to perform first error correction on the data string received from the marker decoder by using an error correcting code in the data string. When either one of the insertion error and the deletion error is determined to have occurred, the marker decoder is configured to perform second error correction on the either one of the insertion error and the deletion error, and output the data string from which the 2-bit markers are removed. | 11-25-2010 |
| 20110051580 | 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 without switching signal processing circuits of two systems, one for the protrusion detection of a disk and the other for the average value calculation with respect to a track or a sector of the disk. This also makes it possible to reduce the size of the measurement circuit. In the protrusion detection/flatness measurement circuit, a signal from a protrusion detection sensor is amplified and converted from an analog signal to a digital signal. The signal passes through a band-pass filter to obtain a digital signal with a predetermined bandwidth. Then, peak detection and average value calculation processes are applied in parallel to the obtained digital signal. Thus, pass/fail decision of the disk can be made based on the detected peak and average values. | 03-03-2011 |
| 20110058461 | METHOD OF EVALUATING MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM - Disclosed is a magnetic recording medium evaluating method capable of providing a discrete-type or bit-pattern-type magnetic recording medium that has stable head floating characteristics even when concave and convex portions remain on the surface and can respond to high recording density with high productivity. A method of evaluating a magnetic recording medium having a magnetic recording pattern on at least one surface of a disk-shaped substrate and includes concave and convex portions corresponding to the magnetic recording pattern on the surface includes: floating and moving a head slider having a sensor attached thereto above the surface of the magnetic recording medium that is rotated; detecting a signal output from the sensor in a non-contact state between the head slider and the magnetic recording medium; and determining whether the magnetic recording medium is defective on the basis of the signal. | 03-10-2011 |
| 20110080820 | 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 each zone is within a range between a predetermined upper limit and a predetermined lower limit and a maximum amount of variation of the measurement value within each zone is substantially equal to a difference between the upper limit and the lower limit. | 04-07-2011 |
| 20110103210 | 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, classifying sectors having a number of error-corrected ECC symbols greater than a first threshold value as first type defect sectors, calculating moving averages of the numbers of error-corrected ECC symbols in units of a predetermined number of sectors, and classifying sectors that are used to calculate a moving average greater than a second threshold value as second type defect sectors. | 05-05-2011 |
| 20110149706 | 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 change in a thermally sensitive layer. The apparatus includes a slider body having a thermally insulating layer formed on an air bearing surface of the slider body and a thermal sensor layer formed on the thermally insulating layer. The thermally insulating layer prevents thermal heat spikes in the thermal sensor layer (such as resulting from contact with an asperity) from dissipating quickly into the slider body itself. The thermal sensor layer is a material that exhibits a change in electrical resistance in response to a change in temperature and is preferably a PTC thermistor material which exhibits a large change in electrical resistance when a transition temperature has been reached. | 06-23-2011 |
| 20110158073 | 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 illuminating beam having a Gaussian distribution is to be provided. The apparatus is configured of a specular reflection detecting device including a detector having a detecting face including an array of multiple pixels, and a processing device that figures out the position of each defect by using, in addition to the output signal from each of the pixels of the detector that detected a specular reflection from the checkup area, also output signals of some pixels out of the multiple pixels having detected the specular reflection from the checkup area of one turn before and the checkup area of one turn after, both adjoining in the radial direction, and determines the type of the defect. | 06-30-2011 |
| 20110170392 | 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 calculating unit calculates a difference value between the reference capacity calculated by the reference-capacity calculating unit and the actual capacity of each storage device. A maximum-value retrieving unit retrieves the maximum difference value out of the respective difference values of the storage devices calculated by the difference calculating unit. A defined-capacity determining unit determines a defined capacity, which is an actually-used capacity of each storage device, on the basis of a value obtained by subtracting the maximum difference value from the reference capacity calculated by the reference-capacity calculating unit. | 07-14-2011 |
| 20110235490 | 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 (e.g., ∝ | 09-29-2011 |
| 20110317535 | 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 has, among the plurality of information recording layers, at least a first recording layer and a second recording layer located on a side nearer to a light incident surface than the first recording layer, and which respectively has a first test area configured by a plurality of segments in the first recording layer, a second test area configured by a plurality of segments in the second recording layer, and comprising a specific area in which there is recorded information used to determine whether or not the respective segments in the first test area can be used. | 12-29-2011 |
| 20120082019 | 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 method and an alternate track including an alternate sector for recording alternate information. The identify module is configured to identify a track group including the information tracks that includes update sectors for updating information and a defective sector. The record module is configured to perform recording for updating information on the identified track group without updating the alternate information of the alternate sector corresponding to the defective sector. | 04-05-2012 |
| 20120087224 | METHOD AND APPARATUS FOR DETECTING SYNC DATA OF READ DATA IN A DISK DRIVE - According to one embodiment, a disk drive is provided, which starts reading data at the head thereof, when a sync mark is detected. The disk drive has a read channel that generates a forced SM detection signal if the sync mark cannot be detected because of the occurrence of TA. The read channel starts generating the forced SM detection signal at the end position of a preamble, which is equivalent to the position of the sync mark. | 04-12-2012 |
| 20120113785 | 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 disks (JBOD) works normally, and determining if the computer can obtain a serial number of each problem disk. The computer notifies a user of the order number of the problem disk and an order number of the JBOD, in response to a determination that the computer can obtain serial number of the problem disk. The computer obtains the order number of the problem disk by deleting the data of the disk that works normally from the disk table, and notifying the user of the order number of the disk and the order number of the JBOD, in response to a determination that the computer fails to obtain serial number of the problem disk. | 05-10-2012 |
| 20120155238 | 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 patterns; counting number of the first pattern until the count value reaches number of the first pattern in one round of the track; generating a value incremented up number of the second pattern in the one round every time an interrupt associated with detection of the second pattern is generated as number of the second pattern; calculating an ideal number from a value obtained by multiplying the number of the second pattern until the number is counted by the counted number of the detected first pattern and a number set to the second pattern with reference to the second pattern formed at a present initial position; and correcting the generated number with the ideal number. | 06-21-2012 |
| 20120176877 | 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 certification test and a head for the gliding test with a heat distortion utilization mechanism (a micro thermal actuator) along a recording surface of the magnetic disk during rotation at a predetermined revolving speed. A flying height of the head for the gliding test is determined according to a revolving speed of the disk. When the flying height of the head for gliding test is determined according to the revolving speed at the certification test, the head for the gliding test is adjusted to a desired height by adjusting a variation of the heat distortion utilization mechanism disposed on the head for the gliding test. The gliding and certification inspections can be performed at the same time. | 07-12-2012 |
| 20120176878 | METHOD OF AND APPARATUS FOR RECORDING DATA ON WRITE-ONCE DISC, METHOD OF AND APPARATUS FOR REPRODUCING DATA FROM WRITE-ONCE DISC, AND WRITE-ONCE DISC THEREFOR - A write-once disc includes: a plurality of update areas in which a predetermined kind of updated information is recorded; at least one main access information area in which main access information is recorded, the main access information indicating a final update area in which finally updated information is recorded among the plurality of update areas; and at least one sub access information area in which sub access information is recorded, the sub access information indicating a location of the finally updated information recorded in the final update area. Accordingly, an access time for reading a predetermined kind of information required to use the write-once disc can be reduced. | 07-12-2012 |
| 20120182849 | 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 spindle with a stick-slip clamp. A vector is determined by which the centre of the disk is displaced from the spindle axis and the vector is aligned with a movably mounted piezo actuator. A voltage is then applied to the piezo actuator to cause the piezo actuator to apply an impulse to the edge of the disk to cause the disk to slip in the clamp and reduce the displacement of the disk. | 07-19-2012 |
| 20120188862 | APPARATUS AND METHOD FOR CERTIFYING A MAGNETIC RECORDING DISK - Apparatuses and methods for certifying a magnetic recording disk ( | 07-26-2012 |
| 20120207005 | 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 storage medium. If an eccentricity of a track on the storage medium exceeds a threshold, the storage medium is rotated to an orientation where the greatest eccentricity is directed toward the media pusher. The media pusher is moved toward the storage medium until a probe extending from the media pusher contacts the storage medium. The probe is locked within the media pusher. The stage and attached media pusher are retracted from the storage medium and the storage medium is unlocked. The magnitude of retraction of the stage is recorded. The stage is moved toward the storage medium a distance corresponding to the probe contact position plus the eccentricity magnitude to correct the eccentricity. | 08-16-2012 |
| 20120257486 | REPRODUCING SYSTEM FOR MEDIUMS AND METHOD FOR IDENTIFYING DIGITAL DATA OF THE MEDIUMS AND REPRODUCING THE SAME - A method for identifying digital data and reproducing the same by executing a software program stored in a memory of a computer is disclosed. The method includes: reading a plurality of source mediums; identifying digital data of the plurality of source mediums; saving the digital data as a temporary file; receiving a request for selecting a target medium, wherein the target medium is used for storing the digital data of the plurality of source mediums; determining a quantity of the target medium to be used for writing according to the size of the digital data and the size of the target medium; and writing the digital data of the plurality of source mediums into the target medium. | 10-11-2012 |
| 20120281515 | 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 drive. A connection unit may activate the USB interface by providing power to the USB interface when a disc switch detects that the disc has been inserted into the disc drive. The connection unit may deactivate the USB interface by no longer providing power to the USB interface when the disc switch detects that the disc has been ejected or no longer is in the disc drive. | 11-08-2012 |
| 20120307616 | 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 record carrier for use in such a method and recording device. | 12-06-2012 |
| 20130142024 | Distributed Field Self-test for Shingled Magnetic Recording Drives - A method is described for allowing disk drives, such as shingle-written magnetic recording (SMR) drives, to be shipped for customer use with portions of the magnetic media being left untested. The testing is then completed by the drive self-testing in the field. The drive is made functional at the factory by fully testing at least one operational set of regions including an I-region, an E-region and a write cache region. The operational set of regions works as a separate self-contained virtual disk drive and can be used immediately. The remaining untested areas on the media can be tested in the field by a background task and/or when the first write command is received that requires a new track or operational set of regions (on-the fly testing). | 06-06-2013 |
| 20130242713 | TAPE DEVICE AND METHOD OF CONTROLLING TAPE DEVICE - A tape device includes a storage unit, a measuring unit, a calculating unit, and an updating unit. The storage unit stores management information in which an identifier of a medium and a data volume further recordable on the medium are in association with each other. The measuring unit measures a data volume written in the medium or a data volume read out of the medium. The calculating unit calculates a data volume recorded in the medium from a total of the data volume measured by the measuring unit, acquires a recorded medium length, and calculates the data volume further recordable on the medium based on the data volume recorded in the medium and the recorded medium length. The updating unit updates the management information stored in the storage unit with the data volume further recordable on the medium which is calculated by the calculating unit. | 09-19-2013 |
| 20130308433 | LOGGING DISK RECOVERY OPERATIONS IN A NON-VOLATILE SOLID-STATE MEMORY CACHE - An apparatus includes a controller capable of being coupled to a magnetic data storage media and a cache. The cache includes non-volatile, solid-state memory. The controller is configured to detect a defect in the data storage media requiring a recovery operation and allocate a portion of the cache for storage of a journal to be used in the recovery operation. The controller is further configured to log steps of the recovery operation to the journal. | 11-21-2013 |
| 20140086034 | STORAGE MEDIA ASPERITY CHARACTERIZATION - The present application discloses detecting an asperity on a storage media surface using two amplitude threshold crossings of an asperity detection signal within a preset timing window. The present application further discloses a temperature-dependent resistive asperity sensor and a preamplifier that correlates a resistance change at the asperity sensor within a preset timing window to detect an asperity on a storage media surface. The asperity may be one or both of a void in the storage media surface and a protrusion from the storage media surface. | 03-27-2014 |
| 20140140182 | Harmonic Ratio Based Defect Classifier - The disclosure is directed to a system and method for detecting and classifying at least one media defect. A periodic pattern is written to a medium to yield at least one waveform. The magnitude of the waveform is compared against a defect threshold to detect the presence or absence of media defects in the medium. When at least one defect is detected, a magnitude for each of at least two harmonics of the waveform is determined in the defect range. The defect is classified by comparing a ratio of the magnitudes of the at least two harmonics against a classification threshold. | 05-22-2014 |
| 20140146650 | STORAGE TAPE ANALYTICS USER INTERFACE WITH MEDIA VALIDATION - A method of accessing tape storage analytics data from tape libraries. The method includes generating a user interface on client devices. The user interface includes a first screen displaying graphics or an analysis table based on the tape storage analytics data. The method includes receiving user input selecting the displayed graphics or an item within a cell of the analysis table and displaying a second screen, which presents a subset of the tape storage analytics data and provides data on operation of at least tape libraries or library components (e.g. robots, elevators, CAPs, pass through ports), tape drives, and tape media within the tape libraries, or alternatively, activities involving any or a combination of these components. The receiving and modifying steps are repeated to navigate between data corresponding to a tape library or its comprising components, a tape drive, media, or corresponding activities. | 05-29-2014 |
| 20140269242 | METHOD AND DEVICE FOR VERIFYING A SERVO PATTERN IN TAPE MEDIA - A system and method for verifying a servo pattern in tape media include a tape drive unit which moves the tape media lengthwise across a read head. The tape drive unit is adapted to use a tape comprising at least one servo band, each servo band including at least one servo pattern. The tape drive unit scans the read head across the servo band in a widthwise direction relative to the tape media. The system and method also include an electronic control unit that is adapted to verify the servo pattern. | 09-18-2014 |
| 20140269243 | TOPOGRAPHIC FEEDFORWARD SYSTEM - A topography detection mechanism may measure surface height of a side read/write track while the read/write head is interacting with a current read/write track. A memory may store the measured surface height. | 09-18-2014 |
| 20140286152 | DATA RECORDING/REPRODUCING DEVICE, ARCHIVE SYSTEM, AND RECORDING CONTROL METHOD - A data recording/reproducing device for recording data on a recordable area of a recording medium in an arbitrary recording unit, includes a control unit that controls the operation of the data recording/reproducing device. The control unit designates a recording unit where data on the recordable area is not recorded as a non-use area, determines whether data has been recorded, or unrecorded in the recording unit on the recordable area, determines the recording unit designated as the non-use area to have been recorded, and records data in the recording unit determined to be unrecorded when data is recorded on the recording medium, under the control. | 09-25-2014 |
| 20150117174 | MEDIA AND DRIVE VALIDATION IN TAPE LIBRARIES - A method for validating media and drives. The method includes receiving a validation request for a data storage tape in a library and, with the tape loaded into a predefined gold drive in the tape library, performing a statistical analysis on the tape to determine an operating parameter such as a measure of read margin for the tape in the predefined gold drive. The method includes validating the tape when the operating parameter compares favorably with a threshold limit defined for the operating parameter for the tape library. The method includes, when the operating parameter fails to compare well with the threshold limit, running a performance test on a drive qualified tape from the library loaded into the predefined gold drive and, when the drive qualified tape passes the test, identifying the tape as degraded. The method includes, when the drive qualified tape fails the test, re-qualifying the gold drive. | 04-30-2015 |
| 20160148647 | FLEXIBLE VIRTUAL DEFECT PADDING - Technologies are described herein for performing flexible virtual defect padding of bad sectors on recording media of a storage device. A defective sector on a data track of a recording medium in the storage device is detected. The size and position of a physical defect within the defective sector are determined, and one or more sectors adjacent to the defective sector on the data track are mapped as virtual defects based on the size and position of the physical defect within the defective sector. | 05-26-2016 |
| 20160379681 | Modular Data Storage Device Testing System - A data storage device testing system may be configured with at least a test slot, a loader assembly, and an exchange assembly. The loader assembly can be positioned to respectively engage and disengage a test deck with the test slot. The exchange assembly may be configured to open an access port portion of the test deck and subsequently replace a tested data storage component housed within the first test deck with an untested data storage component. | 12-29-2016 |
