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7418599 |
Deterring theft of media recording devices by encrypting recorded media files
Techniques are disclosed for deterring theft of media recording devices. Input received from a sensor, or some portion of the input, is encrypted prior to storing a media file. A decryption key...
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7412153 |
Information recording device and method, and information recording system
In recording information, an SMPTE 339M-defined UMID buried in video and audio material signals to be recorded to a magnetic tape ( 30 ) or a UMID generated from information other than the material...
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7397623 |
Using a mechanical stop for determining an operating parameter of a data handling device
Several readings of an actuator's location are taken with a given head while urging the actuator against a mechanical stop, which acts as a guide. These readings are useful, for example, for...
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7375910 |
Data storage cartridge having a plurality of cartridge memories
A data storage cartridge comprises data storage media configured to store data for read and/or write access, wherein the data may be arranged in a plurality of partitions; and a plurality of...
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7362532 |
Hard disk device having normal and low density memory regions
A hard disk device includes a magnetic disk for storing data, a temperature sensor for detecting an ambient temperature and a controller for controlling operation of the hard disk device. The...
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7355805 |
Magnetic tape and method of manufacturing magnetic tape, servo writer, and method of and apparatus for specifying servo band
Data for specifying servo bands SB 1 to SB 5 is embedded in each servo signal S 1 to S 5 that is written on a plurality of servo bands SB 1 to SB 5 formed on a magnetic tape MT.
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7352993 |
Data reproducing apparatus and data reproducing system
A data reproducing system of the invention includes a data transmitter for transmitting a data signal containing audio data by air and a data receiver for receiving the data signal by air from the...
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7350021 |
Method of controlling write and read of data for tape recording apparatus
A write/read control method for recording at least one datum on a magnetic tape within a predetermined distance is provided. The method includes sequentially accumulating a plurality of blocks of...
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7336786 |
Reproduction apparatus
Information or contents cannot be reproduced even from a regular storage medium which is encrypted in accordance with a predetermined encryption system, due to erroneous detection of watermarks....
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7330321 |
Reference magnetic signal recording device and method of manufacturing the same
A method of simultaneously recording multiple reference magnetic signals by using a magnetic head having multiple recording portions is provided. A writing yoke formed of a ferromagnetic material...
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7327528 |
Magnetic recording medium and magnetic storage apparatus
A magnetic recording method for recording information on a medium with a first magnetic layer, a second magnetic layer, and a non-magnetic coupling layer provided between the first and second...
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7324416 |
Information recording medium, method for simultaneous recording and reproduction, and information recording and reproduction apparatus
In order to perform simultaneous recording and reproduction, a large capacity of buffer memories were required. In addition, it was difficult to record data while reproducing data which was...
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7312944 |
Heater control method and storage apparatus
A heater control method for a built-in heater of a head includes turning the heater ON during a time corresponding to consecutive read operation time and write operation time, and turning the...
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7280296 |
Apparatus and method for recording digital broadcast on exchangeable storage medium, and exchangeable storage medium therefor
An apparatus and method for recording digital broadcasts on an exchangeable storage medium are provided for automatically recording broadcast contents desired by a user on the exchangeable storage...
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7265922 |
Asperity data storage system, method and medium
An asperity data storage system wherein asperities are used to represent stored data. The asperity data storage system includes an asperity transducer that thermally interacts with a data storage...
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7265921 |
Method to increase the amount of customer data on a hard disk drive
Format efficiency of a hard disk of a hard disk drive having a rotary actuator and a read/write head having a read element that is offset from a write element is improved by writing a data track...
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7263153 |
Clock offset compensator
A device communicates with a host and includes a transmitter, a receiver and a clock generator that generates a signal having a local clock frequency. A clock recovery circuit communicates with the...
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7259927 |
Method and apparatus for improving signal-to-noise ratio for hard disk drives
A hard disk drive comprising a plurality of read/write heads oriented to serially read data from the magnetic media of the disk drive. The head output signals are delayed and combined to provide a...
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7256955 |
High frequency assisted writing
Data is written to a magnetic media, by applying a magnetic write field to the magnetic media with a write pole, in conjunction with a high frequency magnetic field, to the magnetic media to assist...
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7253978 |
Methods and apparatus determining and/or using overshoot control of write current for optimized head write control in assembled disk drives
The invention includes a testing method which may be applied to at least one writer in a disk drive during the self-test phase to generate write parameters, focused on the Over Shoot Control (OSC)...
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7251088 |
Hard disc device
A portable hard disc device which is read by a recording and/or reproducing apparatus, including: a disc for recording and/or reproducing; a head slider for recording and/or reproducing the disc;...
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7239466 |
Magnetic head device and magnetic recording device
The present invention provides a magnetic head device for recording magnetic signals simultaneously through a plurality of recording heads into recording tracks laid oblique to a running direction...
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7239465 |
Multiple section head assembly for dual azimuth recording
A magnetic head assembly for writing multiple tracks to a tape that travels in a first direction is provided. The assembly includes a first head section for writing a first subset of the tracks,...
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7237001 |
Downloading system
A downloading system which can be used freely by many and unspecified persons. A recording medium is loaded in a public downloading apparatus, and use condition confirmation processing is performed...
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7236318 |
Built in full speed nonreturn to zero test method and apparatus for a data storage device controller
A data storage device such as a disc drive is described that has a controller chip with an integral embedded read/write channel on the chip. The chip includes a built in test capability for testing...
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7233553 |
Method for emptying recording buffer can be made empty by at most one access operation and at most two recording operation, in a simultaneous recording and reproduction
In order to perform simultaneous recording and reproduction, a large capacity of buffer memories were required. In addition, it was difficult to record data while reproducing data which was...
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7230782 |
Correlation receiver for demodulating servo track information
A correlation receiver, among other functions, detects peaks of a correlation signal. The correlation receiver includes a master peak detector for determining whether an amplitude of a pulse of the...
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7221530 |
Magnetic head with high reliability of the data protection, magnetic disk apparatus including the magnetic head and the method of recording information on the magnetic disk apparatus without miserasing the previously recorded data
There are provided a magnetic head and a magnetic disk apparatus wherein an upper magnetic pole is so shaped that, at a position where skew angle is maximum, the maximum of its projected length in...
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7212367 |
Ampere wire write head with confined magnetic fields
A magnetic recording head comprises a write pole having a tip adjacent to an air bearing surface of the recording head, a return pole magnetically coupled to the write pole, a conductor positioned...
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7212366 |
Review control method of video cassette recorder
The present invention relates to a review control method of a video cassette recorder capable of controlling a review operation without noises on a screen in switching from a play mode into a...
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7206873 |
Throughput optimization by activation of selected parallel channels in a multichannel tape drive
The present invention describes a method and system for adjusting the rate of data transfer between a high-speed multi-channel tape drive and a slower-capability network interface. The present...
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7187512 |
Method and system for actively controlling and reducing induced electrostatic voltage on a magnetic storage disk
Actively controlling ESI voltage on an object such as a magnetic storage disk ( 12 ), a rotating MR head, or insulator, includes the method and system for actively monitoring ( 92 ) a generated ESI...
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7184235 |
Power management in operating recording media
A method of managing power used by a recording medium is disclosed. The recording medium receives a maximum current value and limits its operation to consume up to the maximum current value during...
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7167329 |
Compound phase encoding for printed servo patterns
A type of servo pattern suitable for tracking systems in magnetic recording devices such as floppy disks or linear tape or hard disks or in other machines. The pattern comprises several...
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7161756 |
Method and system for communication between a tape drive and an external device
A tape drive has a front panel with an opening therein for receiving tape cartridges, and contains tape drive electronics. For transferring data into and out the tape drive electronics, the tape...
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7161755 |
Increasing areal density in magnetic recording media
A magnetic recording medium is made of a thin film medium that includes magnetic grains. At least one of a magnetization density of the magnetic grains, a crystalline anisotropy field of the...
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7159104 |
Simplified memory detection
Automatic recognition of the type of memory within a device package by using strap resistors within the device package. Such recognition enables a processor, such as a GPU, to automatically...
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7151664 |
Portable media device
A portable media device includes a memory, a data interface port communicatively coupled to the memory, and a portable housing encasing the memory and data interface port. The portable housing may...
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7149045 |
Longitudinal media with soft underlayer and perpendicular write head
A magnetic recording device including a longitudinal magnetic recording medium. The longitudinal magnetic recording medium includes a magnetically soft underlayer disposed under a longitudinal...
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7142383 |
Ultra Fast Backup (UFB) track concept and method for recording same
A recording/playback recording medium comprising an elongated, flexible recording/playback medium having a predetermined width and a predetermined length, together defining a recording/playback...
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7139763 |
Method and system for processing data selected for recording to optical media
Methods for processing data to be recorded to optical media are provided. In one example, a method includes receiving a request to record data to optical media. The method then maps a source path...
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7130141 |
Assembly for thermal and/or thermally-assisted information processing
An information processing assembly includes at least one heater suitable for information processing, and a controller for controlling the at least one heater by at least one of adjusting a power to...
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7120737 |
Disk drive employing a disk command data structure for tracking a write verify status of a write command
A disk drive is disclosed including a disk having a plurality of tracks, wherein each track comprises a plurality of data sectors. A microprocessor executes a write command associated with a disk...
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7102841 |
Recording and/or reproducing apparatus using signal processing program information
Encoded data read by the various and upgraded encoding methods can be decode easily and inexpensively. A tape reading unit 1 is provided to read encoded A/V data and program data from a magnetic...
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7092210 |
Magnetic recording and reproduction method
A magnetic recording and reproduction method comprising recording or reproducing a track of a rotating magnetic disk by means of a magnetic head, wherein the magnetic disk comprises a support and a...
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7092209 |
Longitudinal magnetic recording using magnetic media with a soft underlayer
A method of longitudinal recording using a medium with a magnetically soft underlayer is described. The method includes lowering the longitudinal coercivity in a magnetic domain in the magnetic...
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7088536 |
Magnetically recorded data reproduction apparatus and method thereof
A magnetically recorded data reproduction apparatus that reproduces magnetically recorded data using a magnetoresistive head and method thereof. The recorded data are reproduced by a...
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7085087 |
Data storage apparatus and method for managing buffer memory
To avoid degradation of performance of a storage apparatus even when access biased to writing or reading of data is performed in a buffer memory that adopts a dual ring buffer system as a data...
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7079345 |
Demagnetization of magnetic media for data storage device using gradually reduced magnetic field
Demagnetizing magnetic media for recording data in a data storage device includes placing the magnetic media in a magnetic field at a first strength, and gradually reducing the magnetic field to a...
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7079344 |
Magnetic recording disk drive with data written and read as cross-track magnetizations
A magnetic recording disk drive has a disk with the magnetizations in the concentric data tracks oriented in the cross-track direction. The concentric data tracks are magnetically separated from...
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