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US20130250448 Servo Grey Code Error Correction  
The disclosure is related to systems and methods for servo Gray code error detection and correction. A device may include a circuit configured to 1) selectively implement a quality-based error...
US20080239540 MEDIA SERVOWRITER/CERTIFIER  
Certifying a storage media while servowriting the media by formatting a full compliment of servo data in storage tracks of the media in a minimum number of passes per storage track while...
US20130335842 METHOD FOR DETERMINING WHETHER DEFECT ON DISK IS RECESS OR PROTRUSION AND MAGNETIC DISK DRIVE  
According to one embodiment, there is provided a method for determining whether a defect on a disk in an apparatus includes head is a recess or a protrusion. The method detects a first defect on...
US20140085744 SYSTEM AND METHOD FOR ARCHIVE VERIFICATION USING MULTIPLE ATTEMPTS  
Systems, methods and apparatus for archive verification including the verification of media in a library, are disclosed. More specifically, a method of archive verification may include performing...
US20100046108 Verification of a Tape Data Storage Cartridge  
The provision of verification for data storage cartridges having data storage tape media employs determining the volume identity of a data storage cartridge; and providing an internal label at...
US20070115579 Method to test a tape drive  
Applicant's invention comprises a method to test a tape drive and its mid-tape recovery abilities. Applicant's method provides a tape drive, and disposes a magnetic tape in that tape drive,...
US20120154947 METHOD OF CONTROLLING DEFECTS AND APPARATUSES USING THE SAME  
The method of controlling a defect of a hard disk drive that includes analyzing a defect type by using indexes of error corrected symbols after performing error correction with respect to each of...
US20060066971 System and method for ameliorating the effects of adjacent track erasure in magnetic data storage device  
To ameliorate the effects of ATE in a HDD, tracks that are potential victim tracks of an aggressor track by virtue of the victim tracks being exposed to a magnetic field associated with a write of...
US20070097534 Tape drive apparatus and method  
Disclosed is a method of storing data on a tape medium in at least one data recording session employing a tape drive apparatus operable to record the data in accordance with a format specifying an...
US20140104720 ENHANCED QUALITY-SORTING SCHEDULER  
Aspects of the disclosure pertain to a read channel system and method for providing sector prioritization for promoting improved sector processing performance. The system and method, during...
US20060023336 Cleaning read/write heads of a magnetic tape recording system  
One embodiment of a method is provided of cleaning one or more read/write heads of a magnetic tape recording system using a magnetically recordable cleaning tape in the system. An initial target...
US20100033863 CARTRIDGE REFRESH AND VERIFY  
A method according to one embodiment of the present invention includes receiving an instruction to perform a verification operation on a media cartridge having a tape wrapped around a spool;...
US20120218658 CARTRIDGE REFRESH AND VERIFY  
A method in one embodiment includes receiving a command to perform at least one of a refresh operation and a verification operation on a media cartridge having a tape wrapped around a spool;...
US20070025006 Sector format setting processing method for disk storage device and disk storage device  
A disk storage device has a plurality of disk faces and a plurality of heads, in which a different S/N is improved for each head. The disk face is formatted in a sector format with which the...
US20060245103 Storage device system operating based on system information, and method for controlling thereof  
The storage device system has a storage device to which system information related to the storage device system is written, and a determination unit determining the presence and absence of system...
US20080007856 Magnetic tape storage, method for writing data to magnetic tape, and medium for writing data program  
In a magnetic tape storage including a nonvolatile buffer memory, the buffer memory memorizing sets of data sent from a host computer, a set of data including a pair of one file and one tape mark,...
US20150043102 LOGICAL BLOCK PROTECTION FOR TAPE INTERCHANGE  
A two part process is used for modifying records to be written and retrieved from tape devices. A record is appended with a cyclic redundancy check and a string of zeros. Submitting the entire...
US20050030660 Amplitude spike detector for head instability  
A hard disk drive that contains a self-test for generating data on head spikes. The data is stored on a system track of the drive. The self-test may be firmware embedded into a memory device of...
US20080310043 STORAGE DEVICE, DEFECT DETECTION METHOD AND PROGRAM FOR DETECTING DEFECT IN RECORDING MEDIUM  
The present invention provides a technique for detecting a defect in a tape medium within a relatively short or narrow range. A tape defect detection device includes: a read unit for reading data...
US20090086356 Detecting and Correcting Insertion and Deletion of Bits for Bit Patterned Media Storage Systems  
A method of determining errors in a data storage device is disclosed. The disclosed method includes receiving a first code word from the data storage device. The method further includes...
US20070014043 Method of determining size of error and write control method for hard disc drive, hard disc drive using the write control method, and media storing computer programs for executing the methods  
A method of determining a size of an error generated in a servo sector, a write control method of controlling whether to write data to data sectors successive to a servo sector according to the...
US20050280914 Retry reordering in hard disk drives  
A hard disk drive that updates a retry look-up table to be commensurate with a successful retry read operation. The drive may contain a retry look-up table that contains a plurality of retry...
US20070183074 Disk drive defect map encoding scheme  
A method for encoding defect locations on a storage medium into compact defect map is described. The method comprises creating a first list which defines a sequence of retrievable portions and...
US20070053094 Magnetic disk drive with error correction  
Embodiments of the present invention provide a magnetic disk drive in which the error correction capability of ECC is improved without sacrificing the storage capacity. In one embodiment, a data...
US20070279789 Track based multiple sector error recovery  
Error correction in a disk drive is performed by identifying all errors in multiple sectors of a single track during a single read operation. As the data from the track is moved to a buffer, the...
US20080240278 JOINT DECODING OF ISI (INTER-SYMBOL INTERFERENCE) CHANNEL AND MODULATION CODES  
Joint decoding of ISI (Inter-Symbol Interference) channel and modulation codes. A means is presented by which a single, combined ISI and modulation decoding module is operable to process a signal...
US20060082912 Cleaning read/write heads of a magnetic tape recording system  
A method is provided of cleaning one or more read/write heads of a magnetic tape recording system using a magnetically recordable cleaning tape in the system. The system performs a cleaning...
US20130279040 COMBINED SOFT DETECTION/SOFT DECODING IN TAPE DRIVE STORAGE CHANNELS  
In one embodiment, a tape drive system includes a soft detector for executing a first forward loop of a detection algorithm on a first block of signal samples during a first time interval; and...
US20130335850 Initialization for Decoder-Based Filter Calibration  
Various embodiments of the present inventions are related to initialization of decoder-based filter calibration, and in particular to initially using either a detector output or unconverged data...
US20150109698 ITERATIVE DATA STORAGE READ CHANNEL ARCHITECTURE HAVING DROPOUT MITIGATION  
According to one embodiment, a computer program product for dropout detection in a read channel includes a computer readable storage medium having program code embodied therewith, the embedded...
US20070133114 Method of testing magnetic disc device  
A write head, which is positioned by reading a servo pattern with a read head, writes data on even tracks of a magnetic disc, and then writes data on odd tracks. Then a read head is positioned on...
US20080218890 BASELINE CORRECTION APPARATUS  
A read channel includes a variable gain amplifier, a low-pass filter, an AGC, an analog-to-digital converter, a frequency synthesizer, a filter, a soft-output detector, an LDPC decoding unit, a...
US20090323214 Modulated Disk Lock Clock and Methods for Using Such  
Various embodiments of the present invention provide systems and methods for controlling access to a magnetic storage medium. As one example, a method for controlling access to a storage medium is...
US20090251817 Data error recovery using voting on multiple retrials  
A hard disk drive with a disk that has a plurality of data bits. The drive includes a circuit that reads each data bit n times and selects a value for the bit based on the most frequent occurrence...
US20090002868 Read after write enhancement for bit patterned media  
A read/write head for use with bit-patterned media detects write synchronization errors between a write clock and the bit-patterned media. In particular, the read/write head writes data to the...
US20070279781 CHANNEL TRAINING METHOD AND APPARATUS  
A method for estimating a rate of errors written to a magnetic media includes writing a selected number of signals representing information to a track on the magnetic media, and adjusting a...
US20080019030 Magnetic disk read/write device and method of evaluation of thermal relaxation degradation in magnetic disk read/write device  
A method of evaluating thermal relaxation in magnetic recording, and a pass-fail decision method for a magnetic disk read/write device which satisfies lifetime assurance conditions, are provided....
US20080192375 WRITE CHANNEL EQUALIZATION LEVEL CONTROL IN MAGNETIC RECORDING DEVICE  
A magnetic recording device write channel includes a write equalization encoder for generating a write equalization level signal and a digital to analog converter for converting the write data...
US20140229806 Systems and Methods for Distributed Low Density Parity Check Decoding  
The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for performing data decoding.
US20140053037 Multi-Level LDPC Layered Decoder With Out-Of-Order Processing  
Various embodiments of the present invention are related to methods and apparatuses for decoding data, and more particularly to methods and apparatuses for multi-level layered LDPC decoding with...
US20090034109 DISK DRIVE APPARATUS AND MEDIA DEFECT DETECTION METHOD  
According to one embodiment, a disk drive apparatus includes a defect table formed using more than one defect detection standard. Methods and devices are described using different defect detection...
US20060146434 Verification system for magnetically-written data  
A method of verifying the accuracy or authenticity of alphanumeric magnetic data on a document, wherein the configuration of a pictorial or graphic magnetic reference image in the document is made...
US20130335851 Media Defect Classification  
The present inventions are related to apparatuses and methods for detecting and classifying media defects. For example, an apparatus for classifying a media defect is disclosed including a DFT...
US20070183081 Data storage device and defective area management method therefor  
Embodiments in accordance with the present invention increase the possibility that a servo track in which servo data is defective may be detected, greatly decreasing the possibility that a write...
US20120320470 TAPE CLEANER  
A tape cartridge library that is equipped with a cleaning device is described. The tape cartridge library essentially includes a plurality of tape cartridges each possessing recording tape media....
US20070146921 Hard disk drive and method for managing scratches on a disk of the hard disk drive  
A method for managing scratches on a disk of a hard disk drive is disclosed. By dividing the disk into a plurality of evaluation groups, testing each evaluation group for defects, calculating line...
US20140168811 Irregular Low Density Parity Check Decoder With Low Syndrome Error Handling  
A data processing system is disclosed including a data decoder circuit, an error handling circuit and a syndrome checker circuit. The data decoder circuit is operable to apply a data decode...
US20070091498 Information processing apparatus, data storage method, and data storage program  
An information processing apparatus includes a hard disk drive that includes a hard disk, a writing unit that writes a data file to the hard disk, a reading unit that reads the data file written...
US20090273856 Timing insensitive method and apparatus for spectral analysis in a disk recording system  
A hard disk drive that includes a disk that contains at least one signal and a head that is coupled to the disk. The disk drive also contains a circuit that includes a data sampler that-generates...
US20140002920 Systems and Methods for Identifying Head Contact  
Various embodiments of the present invention provide systems and methods for determining contact between a head and a storage medium.

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