|
Match
|
Document |
Document Title |
|
|
7443624 |
Method for recording data freshness degrees by a tape drive
A method for recording data freshness degrees by a tape drive is disclosed. During the recording of a set of data and a data freshness degree associated with the set of data a tape recording...
|
|
|
7440212 |
Method and systems for a highly error tolerant tape format
Described herein are media drives for writing information to a media (e.g., a tape media), systems for storing information on a storage medium, and methods of writing information to a media. The...
|
|
|
7440211 |
Apparatus and/or method of controlling timing of servo pulses and disk drive using the method
Provided is a method and apparatus for adaptively controlling the timing of servo pulses in a disk drive in consideration of the amount of spindle jitter generated when a disk rotation speed is...
|
|
|
7436610 |
Disk drive employing different zone boundaries across disk surfaces
A disk drive is disclosed comprising a plurality of disk surfaces, including first and second disk surfaces. A first physical zone on a first disk surface has a physical zone boundary at a first...
|
|
|
7433143 |
Adjusting track density by changing slope of spiral tracks used to servo write a disk drive
A method and apparatus is disclosed for adjusting the track density by changing the slope of spiral tracks used to servo write a disk drive. A target track density is established for a disk...
|
|
|
7433141 |
Data randomization for rewriting in recording/reproduction apparatus
A data recording/recovery device ( 20 ) comprises a packet generator ( 34 ) for including recordable information into a packet ( 44 ), the packet initially having a nominal run length limited (RLL)...
|
|
|
7433140 |
Recording and playback apparatus, recording controlling method, and recording medium
A recording and playback apparatus includes a recording and playback unit recording a signal on a storage medium and playing back the signal recorded on the storage medium, the recording and...
|
|
|
7426086 |
Off track write protection for data storage device
Embodiments of the invention prevent offtrack write that will be caused due to a head vibration in a storage device. In one embodiment, a hard disk drive (HDD) judges approval/disapproval of write...
|
|
|
7423828 |
Off-track write error recovery
Method and apparatus for off-track write error recovery. A storage medium is provided with at least first and second tracks, and a write protected status is assigned to the second track to inhibit...
|
|
|
7423827 |
Systems and methods for accessing data from a variable polarity head assembly
Various systems and methods for accessing data via a variable polarity head assembly are disclosed herein. As one example, a method for accessing data is disclosed that includes receiving a data...
|
|
|
7417816 |
Surface analysis test with mixed ECC symbol
Embodiments of the present invention provide an inspection method for detecting a physical defect of a magnetic disk with high sensitivity without increasing the length of inspection time. In a...
|
|
|
7417814 |
Magnetic recording device
A magnetic recording device comprising a magnetic recording medium, a read-write channel for modulating write data, writing it on the magnetic recording medium, reading data from the magnetic...
|
|
|
7415636 |
Method and apparatus for replacement processing
A recording-medium controlling apparatus that performs a read-access and a write-access of a recording medium in response to access request from a higher-level apparatus, detects a read error that...
|
|
|
7401250 |
Recording medium for storing start position information for each zone and method and apparatus of managing data using the information
A recording medium for storing start position information for each zone, a method of managing data using the information, and an apparatus for recording the information and controlling recording...
|
|
|
7398006 |
Disc access processor processing a result of accessing a disc and method thereof
Prior to recording, a difference between a disc's temporal, maximum recordable length and a temporal length having been consumed by recording data is calculated. A scale is determined to allow a...
|
|
|
RE40413 |
Method and apparatus for developing a dynamic servo signal from data
Apparatus using information about the extent of errors in sensed data for performing as a control function at least one of adjusting the position of a magnetic head to improve alignment relative to...
|
|
|
7394606 |
Information storage device and write control circuit
On writing information to an information recording medium including multiple recording areas having logical addresses assigned thereto, each of the recording areas having information recorded...
|
|
|
7388938 |
Method for bit-byte synchronization in sampling a data string
Bit and byte synchronization for sampling and decoding a data string is provided a single data field u. The data string x has pre-pended to it a short string of 1s (ones), followed by u to yield a...
|
|
|
7388525 |
Decoding device and method, program recording medium, and program using modulation code encoded in accordance with a variable length table
The present invention relates to a decoding apparatus and method, a program storage medium, and a program, which allow high-performance decoding of a modulation code encoded in accordance with a...
|
|
|
7382559 |
Recovery processing method for device specific information of medium storage device and medium storage device
A medium storage device reads device specific information from a medium to a memory and performs read/write operation to the medium, which allows receiving commands from a host even if a read error...
|
|
|
7379256 |
System and method of rewriting data tracks
The present disclosure is directed to systems and methods of rewriting defective tracks in a data storage device. In a particular embodiment, the method includes writing a servo pattern on a data...
|
|
|
7376861 |
Recording medium for storing start position information for each zone and method and apparatus of managing data using the information
A recording medium for storing start position information for each zone, a method of managing data using the information, and an apparatus for recording the information and controlling recording...
|
|
|
7372652 |
Correcting errors in disk drive read back signals by iterating with the Reed-Solomon decoder
A read channel includes a signal receiver that receives a read back signal and a signal detector to detect symbols in the read back signal. The signal detector includes a first detector that...
|
|
|
7372651 |
Introducing a noise signal into a read-back signal when data is written to a removable data storage medium
In one exemplary embodiment, a noise signal is introduced into a read-back signal when data is written to a removable data storage medium. While writing the data to the removable data storage...
|
|
|
7369351 |
Magnetic disk drive and read/write method to reduce read error rate
Embodiments of the invention reduce the error rate of a read error that is caused by a spacing interval between a write head and a read head, which are formed on a slider. In one embodiment, a...
|
|
|
7369339 |
Failure prediction method for magnetic disk devices, and a magnetic disk device using the same
A warning against the possible failure is accurately sent from the magnetic disk device to a host device. In one embodiment, error indices per unit time are stored discontinuously/continuously for...
|
|
|
7362527 |
Method and apparatus for retrieving data
A method of retrieving data includes caching data stored in allocation units of a memory ( 102 ), preferably a harddisk drive system, of which retrieval incurs a performance penalty. An example of...
|
|
|
7359134 |
Data save processing method for disk storage device and disk storage system
A disk storage device has a plurality of disk faces and a plurality of heads. The disk storage device protects the data on the disk face for a head before the defect of the head occurs. For each...
|
|
|
7355803 |
Method and apparatus for optimizing hard disc drive and/or recording medium for the same
A method and apparatus for optimizing a hard disc drive, in which parameters of the hard disc drive are updated by periodically performing a retry of the hard disc drive when the hard disc drive is...
|
|
|
7352629 |
Systems for continued verification in non-volatile memory write operations
Temporary lock-out is provided while programming a group of non-volatile memory cells to more accurately program the memory cells. After successfully verifying that the threshold voltage of a...
|
|
|
7345837 |
Disk drive that refreshes data on portions of a disk based on a number of write operations thereto
A disk drive includes a rotatable data storage disk, a transducer, an actuator, and a controller. The transducer is configured to read and write data on the disk. The actuator is configured to...
|
|
|
7334165 |
Signal processing apparatus and a data recording and reproducing apparatus including local memory processor
In a data recovery processing, the conventional overhead, primarily, latency due to a rotational recording media is removed. Secondary, in a signal processing or in a recording and reproducing...
|
|
|
7333281 |
Method and apparatus to write and inspect servo information on a disc drive
A method and an apparatus to write and inspect servo information on a disc drive and minimize an effect on servo information written in adjacent tracks caused by a gap erase field, and write servo...
|
|
|
7330320 |
Method and apparatus to limit DC-level in coded data
In a perpendicular magnetic recording system, the data that is being written by the write channel is fed back into the read channel. The read channel processes the data and decides if the written...
|
|
|
7324294 |
Magnetic recording disk drive with patterned media and circuit for generating timing pulses from the pattern
A magnetic recording disk drive has a patterned magnetic recording disk with data blocks of magnetizable material separated by nonmagnetic regions, a read head for reading the magnetized data...
|
|
|
7317588 |
Storage device, data-assurance control device, and data assurance method
A data reading unit reads inner offset data from an offset reading in an inner direction toward a center of a storage medium and outer offset data from an offset reading in an outer direction...
|
|
|
7307887 |
Continued verification in non-volatile memory write operations
Temporary lock-out is provided while programming a group of non-volatile memory cells to more accurately program the memory cells. After successfully verifying that the threshold voltage of a...
|
|
|
7307809 |
Correlation servo for positioning recording head
Tape heads and controllers for controlling such heads in a tape drive are described. A controller may determine a first parameter corresponding to the similarity between data read by a first pair...
|
|
|
7304921 |
Recording control device, recording control method, program and recording system
To provide a recording control device able to control a data recording so as not to use a defective sector free from a sector test before a shipment thereof, which controls a data recording with...
|
|
|
7298568 |
Systems and methods for using worf to identify burst patterns for repair
The misplacement of a servo burst during a servowriting or self-servowriting process can be corrected by erasing and re-writing that burst. In addition, WORF information of a track can be saved in...
|
|
|
7280293 |
Multi-level mapping of tape error recoveries
Method and apparatus are provided for presenting various levels of detail about successful error recoveries and background hardware optimizations during the recording and retrieval of digital...
|
|
|
7274524 |
Correcting errors in disk drive read back signals by iterating with the reed-solomon decoder
A signal detector to detect symbols in a read back signal. The signal detector includes a first detector to generate raw decisions as a function of the read back signal. A post processor identifies...
|
|
|
7269767 |
Magnetic disk apparatus, preventive maintenance detection method and program therefor
The present invention has been made to obtain a magnetic disk apparatus and the like capable of using a patrol region in the magnetic disk to detect a location in need of maintenance in hardware...
|
|
|
7248424 |
Nonlinearity measuring method, nonlinearity measuring unit, magnetic recording/regenerating unit and LSI for magnetic recording/regenerating
A nonlinearity measuring method capable of measuring NLTS with a higher precision while taking the state of magnetization inversion of a preceding bit string into consideration. A constitution...
|
|
|
7242546 |
Determining a location based on a cyclic bit sequence containing consecutively-placed identical bit-groups
A location within a cycle is determined by reading a portion of a cyclic bit sequence, the bit sequence containing several interspersed bit-group sets that each contain a plurality of series that...
|
|
|
7230781 |
Information storage system, and a method of operating it
An information storage system has structure with a head that can effect information transfers with respect to a storage medium. According to one feature, a control portion monitors a characteristic...
|
|
|
7230780 |
Method, apparatus and program storage device for providing protrusion feedback for a read/write element
A method, apparatus and program storage device for providing protrusion feedback for a read/write element is disclosed. A slider with a heating element is provided to control the level of...
|
|
|
7228481 |
Optical disk and method of recording data to the same
A method of recording data to an area including a defective ECC block of a DVD+RW, and an optical disk written in the recording method are provided. In the method, when data is recorded to an area...
|
|
|
7227708 |
System and method for determining long-range erasure of adjacent tracks in hard disk drive
A method for identifying victim tracks distanced from an aggressor track in a hard disk drive that are deleteriously affected by long range fringe effects causing adjacent track interference (ATI)...
|
|
|
7224760 |
High-speed wide bandwidth data detection circuit
A high-speed, wide bandwidth data detection circuit includes a phase detection module, a data detection module, a loop filter, and a voltage controlled oscillator. The phase detection module is...
|