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7382568 |
Circuit and method for detecting a servo wedge on spin-up of a data-storage disk
A servo circuit includes a servo channel and a processor. The servo channel recovers servo data from servo wedges that identify respective data sectors on a data-storage disk. The processor detects...
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7274526 |
Tape drive apparatus
A tape drive apparatus has at least one rotary head for reading/writing a track. The track has a number of fragments and each fragment has an identifier. The tape drive apparatus has a position...
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7184241 |
Disk drive that performs cold writes to erased buffer
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...
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7167332 |
Method and apparatus for recording data onto a recording medium including warning of the approach to an end of medium position
Briefly described, one embodiment of a method of recording data in a sequence of data sets onto a data recording medium having a recording capacity up to an end of medium position includes the...
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7167326 |
Tape drive that supports update-in-place
A method in a data processing system is disclosed for permitting update-in-place in a tape drive. Data in a particular record in a tape that is mounted on the tape drive is modified. The particular...
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7085480 |
AV/C commands for accessing a hard disk device
A method and system thereof for organizing and accessing stored data in a mass storage unit such as a hard disk device. An object is associated with the stored data, and a unique object identifier...
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7046464 |
Data recording method and data recording/reproducing device, recording medium
The present invention provides a data recording method a data recording and/or reproducing apparatus for recording data transmitted from a computer to a magnetic tape. In case a recording head...
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6985325 |
Updateable centralized data position information storage system
A method of centralized data position information storage comprising the steps of arranging a byte stream of data into partitioned logical data, providing an updateable centralized storage area...
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6947241 |
Pre-block ID mark for multi-directional block location when using a unidirectional coding format
An asynchronous method for locating individual blocks of data in a tape drive, without having to read the blocks of data is provided. The invention comprises placing an ID mark adjacent to the data...
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6940666 |
Magnetic tape apparatus that duplicates data and stores the duplicated data in plural magnetic tape drives
There is provided a magnetic tape apparatus which can easily and rapidly restore data and has improved availability. The magnetic tape apparatus includes a plurality of magnetic tape drives, and a...
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6912104 |
Timing based servo pattern incorporating band encoding
Identification of servo tracks is provided by adding one or more additional symbols to the write elements of at least some tracks on a servo recording head. The additional symbols are ignored for...
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6906882 |
Recording and reproducing apparatus and method
A signal is recorded on and reproduced from a first tape-like storage medium. At least one indexing signal is recorded on the first storage medium. Or, at least one indexing signal already recorded...
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6862149 |
Searching for append point in data storage device
There is disclosed a method of accurately locating an append point along a length of linear tape data storage medium, comprising entering a search mode searching for an absolute code word quad set...
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6798602 |
Window based directory for magnetic tape
Directories are provided for data recorded on a magnetic tape in the form of files having data demarcation signals, such as filemarks. Data storage logic arranges a map of the tape in fixed...
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6795389 |
Optical information recording medium with substrate and multiple information
An optical information recording medium is provided with a plurality of information layers ( 2, 3 ), each of which has a sector structure in which a data area ( 8, 12 ) is divided in the...
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6791781 |
Method and apparatus for providing linear position (LPOS) estimations
A method and apparatus for providing linear position (LPOS) estimations. If valid LPOS data may be detected from the tape, then a first method for LPOS estimation is performed using the Hall effect...
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6768862 |
Retrieval method and retrieval device by designation of recording time in image recording/reproducing apparatus
A retrieval method by designation of recording time comprises the first step of specifying, when recording time is designated in order to perform retrieval by designation of the recording time, a...
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6762898 |
Magnetic recording and playback apparatus and magnetic recording and playback method
The invention provides a magnetic recording and playback apparatus and method which can access a magnetic tape in a significantly reduced time when applied, for example, to a tape streamer for...
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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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6714375 |
Magnetic recording and reproducing apparatus and magnetic tape accessing method
A magnetic recording and reproducing apparatus according to the invention involves unloading a magnetic tape after the tape is positioned to one of its unloading regions which is located...
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6710955 |
Method and apparatus for converting an analog audio source into a digital format
An apparatus and method for converting and improving an existing analog audio recording as it is converted into a digital format with reliable tone detection and interpretation. Specifically, the...
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6690531 |
Dynamic tape path adjustment
Data recording tape is passed along guides and past a read/write head. Sensors detect the position of the tape and adjust the guides and the head as a function of the position. If the tape deviates...
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6624959 |
Tape driving apparatus and recording medium
A tape driving apparatus and a recording medium, which is capable of reducing time in ejecting or replacing the recording medium and of maintaining accuracy, whereby is possible to load/unload a...
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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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6532128 |
Data set to recording media registration and synchronization
A system and method for precisely registering and synchronizing data sets on a recording media having a prerecorded servo pattern. The recording media is subject to continuing movement for reading...
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6525894 |
Tape drive apparatus and method for mounting a volume from a tape medium
A method of mounting a volume from a tape medium on a tape drive apparatus. The method reads a bar-code indicating the volume from a tape cartridge, attaches the tape cartridge to a tape drive, and...
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6504664 |
Locating index mark in rotating magnetic storage media
A rotating storage medium has an index mark-indicating sequence recorded thereon, the index mark-indicating sequence comprised of bits distributed over plural servo wedges. The index...
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6490114 |
Method of synchronizing physical and logical positions in a magnetic tape recording device
An improved tape storage device having information for converting longitudinal physical positions written in a medium to logical positions used by a tape drive. The conversion information, an...
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6483984 |
Magnetic recording-reproduction device
The invention provides a magnetic recording-reproduction device which comprises a CTL signal recording circuit 5 for recording a control signal, a CTL duty setting circuit 4 for setting a...
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6452738 |
Magnetic recording apparatus and reproducing apparatus
A magnetic recording and reproducing apparatus detects a first time code in hour-minute-second frame units recorded in a subcode data record area located in a predetermined position of each of the...
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6426842 |
Tape travel controlling apparatus for use with data recorder
A tape controlling apparatus for use with a data recorder for recording and/or reproducing digital data on and/or from a tape-shaped recording medium. A target position signal for representing a...
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6424790 |
Video tape recorder having control head upstream of erase head
In a recording and reproducing apparatus having at least one program recorded to recording tracks on a recording medium, management database is recorded on the recording tracks with the program so...
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6417978 |
Recording medium searching method and recording medium processing device using the same method
When a program PA (0) is searched, the tape position for search starting is identified. A detection area is set based on the tape position and the record position of the program PA (0). The tape is...
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6347353 |
Information medium having digital signals recorded thereon
An information medium having digital signals recorded therein includes a disk having first and second recording surfaces. The digital signals are in the form of a data frame including a lead-in...
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6341047 |
AV data base for VTR
In a recording and reproducing apparatus having at least one program recorded in recording tracks on a recording medium, a management database is recorded on the recording tracks with the program...
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6320710 |
Tape reproduction apparatus and method
The present invention enables to preferably correct mark patterns reproduced in parallel from a magnetic tape. A mark detection block 204 successively identifies as one of the plurality mark...
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6308298 |
Method of reacquiring clock synchronization on a non-tracking helical scan tape device
A method and apparatus for reacquiring synchronization of a clock synchronization signal with a data signal in a non-tracking storage device is presented. A packet error detector detects errors in...
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6307700 |
Tape recording and/or reproducing apparatus and tape ejecting method
A tape streaming drive capable of unloading and loading a tape in a shorter time. The tape streaming drive includes a motor driving and servo circuit 150 having the function of controlling the...
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6295178 |
Cassette and recording/reproducing apparatus and method using the same
A cassette houses a first and a second tape-like recording medium. The cassette is provided with a first and a second reel, at least a first tape guide provided between the first and second reels,...
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6272565 |
Method, system, and program for reordering a queue of input/output (I/O) commands into buckets defining ranges of consecutive sector numbers in a storage medium and performing iterations of a selection routine to select and I/O command to execute
Disclosed is a system, method, and program for selecting an input/output (I/O) command in a queue of I/O commands. Each I/O command operates within a range of addressable locations on a storage...
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6268975 |
Tape drive utilizing encoded file markers to locate target positions
The present invention provides methods and apparatus for locating target positions within an encoded data stream, where the encoded data stream incorporates special, reserved codewords to represent...
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6256162 |
Moving picture searching apparatus
The present invention relates to a moving picture searching apparatus, where moving picture information recorded can be searched easily when desired moving picture information is picked out. Of...
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6246537 |
Recording medium, method and apparatus utilizing circular logical block address association
A disc-shaped recording medium for magnetically recording information signals, in which logical block addresses are associated with the recording tracks on the disc in such a sequence in which the...
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6236803 |
Reproducing apparatus
A reproducing apparatus which comprises a reproducing part having a first reproducing mode and a second reproducing mode different from the first reproducing mode and arranged to reproduce a signal...
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6229659 |
Methods and apparatus for storing data and auxiliary information
Data are stored on magnetic tape along successive tracks extending obliquely across the tape, in each of several areas including a lead-in area, a data area and an end-of-data (EOD) area. Each...
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6222693 |
Re-recording/re-producing device for magnetic tape and head cleaning
A re-recording/re-reproducing device cleans both the magnetic tape and head of dregs which cause errors in writing and reading. A magnetic head records and reproduces input digital data to and from...
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6206704 |
Karaoke network system with commercial message selection system
An improved karaoke network system that allows a user to select and obtain desired information through an interface while a message is displayed between intermissions of karaoke performances. Data...
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6198589 |
Video tape recording apparatus
Magnetic recording apparatus are provided for recording signals on a magnetic tape. A recording head records signals in successive tracks on the tape and a tape transport transports a magnetic tape...
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6188834 |
Device and method for recording and reproducing image information
A signal recording apparatus is arranged to record main information in a first area provided in each of a multiplicity of parallel tracks formed on a tape-shaped recording medium, and an index...
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6185717 |
Data reception unit
A data reception unit having improved robustness against synchronization code errors. In data transmission, the synchronization code is always located in the headers of coded data contained in the...
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