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7385776 |
Device, method, and program product for controlling a tape data storage drive
A device, method, and machine-readable medium program product for controlling a tape data storage drive are disclosed. According to one embodiment, a device is provided for controlling a tape drive...
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RE39809 |
Hard sectoring circuit and method for a rotating disk data storage device
An apparatus for providing sector location pulses to a controller of a rotating disk data storage device having a counter clocked in proportion to the disk rotation rate and an accumulator for...
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7221985 |
On-screen calibration system and operating method thereof
An on-screen calibration system for disc drives and the operating method thereof. The calibration system includes an autocollimator detecting the inclined angle of the stage of a disc drive. A...
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7203415 |
Recording, reproducing, and recording/reproducing apparatuses for recording input data in a recording medium capable of non-linear access and methods therefor
In recording, reproducing, and recording/reproducing apparatuses and methods thereof, while endlessly-recording first data, desired second data can be easily stored. The apparatuses include a...
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7194186 |
Flexible marking of recording data by a recording unit
The invention enables a recorder to mark a recording as an event is being recorded. The invention can enable the specification of a mark so that the mark is associated with recording data obtained...
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7193805 |
Flying-type disk drive slider with micropad
A slider ( 2 ′) with a reduced fly height is disclosed. The slider includes a small micropad ( 66 ) on the lower surface ( 22 ′) of the slider ( 2 ′). A sensor region ( 62 ) of a head ( 61 )...
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7139148 |
Recording medium, recording method, and recording apparatus
When the data recording is performed on a magnetic tape in various recording densities, information relating to the recording density (recording-density related information) is recorded in the data...
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7111135 |
Random access time to data stored on LTO tape by incorporating stacked cartridge memory (CM) modules
A tape cartridge having dual cartridge memory modules to provide memory redundancy, and a method and apparatus for providing redundancy of cartridge memory information within a tape cartridge. The...
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7076603 |
Method for mapping a selected sector to a zone on a disk
A method is disclosed for mapping a selected sector to a zone on a disk having a plurality of zones during the operations of a disk drive. The method includes receiving a sector address...
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7042668 |
Method and apparatus for generating an index location from a spin motor of a disk drive
A method and apparatus for generating an index location from a spin motor of a disk drive are disclosed. A disk drive includes a motor having a plurality of commutation states, wherein changes in...
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6981116 |
System and method for information control block tracking streams for universal disk format file systems
A system and method for providing information control block (ICB) tracking streams for Universal Disk Format (UDF) file systems. The streams assist in tracking the location of the ICBs on the...
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6973257 |
Method for indexing and searching moving picture using motion activity description method
A method for indexing and searching a moving picture using a motion activity description method is disclosed, which includes a step for describing a motion feature information based on a f — code...
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6967803 |
Recording medium, recording method, and recorder
When the data recording is performed on a magnetic tape in various recording densities, information relating to the recording density (recording-density related information) is recorded in the data...
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6967802 |
System and method for reducing latency for serially accessible media
A technique for reducing the access time in a storage system having serially accessible media. One or more duplicate copies of data are maintained at different offset locations on serial media....
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6965563 |
Resource reservation system in a computer network to support end-to-end quality-of-service constraints
A computer network is disclosed comprising a plurality of interconnected computer devices including a plurality of disk drives for storing network data, each disk drive comprising a head and a...
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6961200 |
Optical servo track identification on tape storage media
A method and a system for formatting a magnetic tape with identifiable optical servo tracks are disclosed. Multiple optically detectable servo tracks extending lengthwise parallel to the tape...
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6940676 |
Triple push-pull optical tracking system
A method of generating a composite signal in a closed loop servo signal system of a data recording system used to drive a recording head to any given position within a dynamic range of a servo...
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6937413 |
Tape servo information with superimposed data information providing servo band identification
In magnetic tape having separate longitudinal servo bands of servo information with superimposed data information, the separate servo bands have selected different superimposed data information, to...
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6937411 |
Method, system, program, and storage cartridge for storing data in a storage medium
Provided is a method, system, and program for storing data in a storage medium. A layout of a storage medium including a first and second user data sections is provided, wherein the first user data...
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6920003 |
Data storage reading device and method
A processor processes data read from plural data tracks on a data-containing medium. The data tracks include markers. The processor determines if markers are detected in a predetermined number of...
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6906881 |
Apparatus and method to erase a magnetic tape
A method to erase a magnetic tape, where the magnetic tape is first mounted in a magnetic tape in a tape drive, where that magnetic tape includes a physical beginning of tape (“PBOT”), a...
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6898041 |
Method and apparatus for motor control in a disk drive
A disk drive which can be used in particular under a low temperature environment is disclosed. The drive comprises a spindle motor (SPM) being a fluid dynamics bearing motor, and rotates a disk...
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6857044 |
Data storage device for fast multiple file write operations
A data storage device comprising a computer useable medium having computer readable program code disposed therein for writing information on a data storage medium using fast multiple file write...
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6842304 |
Measurement of write track width for magnetic tape head
Width of a write track for a magnetic tape head is measured by writing a foreground magnetic track signal on a magnetic tape having a dissimilar background signal. A magnetic tape read head is...
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6813107 |
Apparatus and method for detecting an optimal writing power
Method and apparatus accomplishing an OPC (optimal power calibration) at a test area secured in data recording area of a writable optical recording medium and detecting an optimal writing power...
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6801383 |
Method for calibrating a tape media using staggered calibration tracks
A staggered calibration track comprising a plurality of calibration tracks for use positioning a tape drive tape head for reading and writing data to and from multiple data tracks. The staggered...
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6788487 |
Magnetic tape apparatus and magnetic tape accessing method
In a magnetic tape drive for accessing a magnetic tape contained in a memory built-in cartridge, a logical beginning of tape is assigned and updated for the magnetic tape that is being accessed....
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6775086 |
Magnetic tape apparatus and method for controlling the running of a magnetic tape to stop at a stop position
In a magnetic tape apparatus for controlling a running of a magnetic tape to stop at a reference stop position, a control part controls the feed reel shaft and the take-up reel shaft to reel the...
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6762897 |
Magnetic encoder apparatus
A magnetic encoder apparatus comprises a permanent magnet 2 fixed to a rotating body 1 , a magnetic field detection element 4 which is opposed to the permanent magnet 2 through an air gap...
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6732192 |
Disc recording scheme for enabling quick access to disc data
A system for recording data to a disc shaped record medium. The data is recorded according to a universal disc format employing a hierarchical file system, and data within the hierarchical...
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6721490 |
Hierarchical storage scheme and data playback scheme for enabling random access to realtime stream data
A hierarchical memory scheme capable of improving a hit rate for the segment containing the random access point rather than improving the overall hit rate of the cache, and a data playback scheme...
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6721123 |
Magnetic tape recording medium, magnetic tape recording and reproducing apparatus, magnetic tape recording method and magnetic tape cassette
A magnetic tape includes two servo tracks respectively extending in the longitudinal direction of the magnetic tape from the tape-width-direction two end portions of the magnetic tape, and a data...
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6721121 |
In-situ determination of landing zone transition for improved disk drive reliability
A data storage disk is formatted using a measured edge location of a textured landing zone as a reference for writing servo information to the surface of the disk. The edge of the textured landing...
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6715033 |
Method of and apparatus for tracking appended data on storage medium
A sequence of data blocks written onto a medium of a data storage system includes first and subsequent appended data blocks having an append point code for identifying the first appended data block...
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6697206 |
Tape edge monitoring
The position of one or both edges of tape, such as magnetic tape, can be determined using a light source, such as a solid-state laser with a collimated beam, and a detector, such as a photodiode....
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6693754 |
Method and apparatus for a disc drive adaptive file system
Aspects of the invention include a method and apparatus to optimize the location of data on a disc drive storage system by optimizing the physical location of the file to allow the read ahead...
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6674599 |
Data storage method, apparatus and medium
A tape is associated with a semiconductor memory storing the end position of the last data of a data set recorded on the tape. The end location is stored in the memory before the last data are...
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6665137 |
Method for locating data tracks on a tape media
According to the present method a plurality of vertically adjacent reference tracks corresponding to a plurality of vertically adjacent data tracks are written to the tape media so that each data...
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6657807 |
Magnetic recording/playback apparatus and method
There is provided a magnetic tape recorder/player for writing and/or reading an information signal to and/or from a magnetic tape encased in a two-reel type tape cartridge. The apparatus includes a...
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6624961 |
Tape drive apparatus and recording medium
Formation of a partition is quickly performed. Management information areas such as a device area D 1 , system areas S 1 and S 2 , an optional device area OD 1 , and the like are produced by...
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6608730 |
Appended data recording on magnetic tape
Reducing the gap distance between existing data and appended blocks increases the information density written onto magnetic tape. A narrow gap spacing may be achieved by reading the existing block...
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6603618 |
Method and system for monitoring and adjusting tape position using control data packets
A method and system for monitoring and/or adjusting the positioning of a magnetic tape using central control packets that are recorded to the tape is presented. Central control packets are used for...
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6587298 |
Device for reading and writing tape recording medium, accessing method therefor, and recording medium
A device for reading and writing data to a tape recording medium divides a magnetic tape into a plurality of partitions. At boundaries between the partitions, optional device areas (ODAs) are...
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6574064 |
Tape recorder
A tape recorder, having a reading device for a magnetic tape, is set up to read out simultaneously a number of data tracks recorded in parallel on the magnetic tape. Stored on the magnetic tape in...
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6549360 |
Magnetic recording medium with laser-formed servo-marks
A magnetic recording medium is formed with a distribution of laser micromachined servo-marks in the form of pits or indentations with an attendant reduction in servo-tracking area and increased...
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6546460 |
Recording and/or reproducing method and apparatus
A recording and/or reproducing method and apparatus in which, when it is detected during recording main data on a removable recording medium employing a storage unit that the recording medium has...
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6529973 |
Programmable generic read channel control device
The present invention provides a programmable generic read channel control device and circuitry for generating an output signal to control read/write operations. The programmable generic read...
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6519105 |
Recording medium and tape drive device
When a magnetic tape cassette which may include a memory in cassette (MIC) device storing a system log therein is loaded, on the basis of a system log allocation flag read out from the magnetic...
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6470412 |
Disk drive, disk control method, data read/write method, data assignment method, and disk storage medium
A disk drive and a disk drive control method is described which reduces the number of one track seeks a drive performs. The one track seeks can operate the actuator bearing in a non-linear mode or...
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6424482 |
System for recording and reproducing data having scheme for minimizing variation in record track width when recording at different data rates
At least three heads are mounted on a rotary drum. Between the first and third heads which are located in close proximity to each other and have different azimuth angles, a minute height difference...
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