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Match Document Document Title
7295395 Sensing a prior transducer position by a motion pattern  
A motion pattern of an actuator supporting a head is monitored during/after a disc spin-up. The monitor's signal is configured to generate a digital indication of where the head was just before the...
7293189 Method and device for reproducing additional data in synchronization with main data using time information  
A recording medium, method and apparatus for managing data are discussed. According to an embodiment, the present invention provides a method of reproducing main data and additional data. The...
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...
7251093 Tape system with adjustable wrap angles and method for adjusting tape wrap angle  
A method for adjusting a tape wrap angle is described comprising the steps of operating the tape system to generate or regenerate an electrical signal in the head from the tape, either increasing...
7245816 Method for designing envelope detecting circuit for video signal processing integrated circuit and integrated circuit using the same  
In a method for designing an envelope detecting circuit for a video signal processing integrated circuit (IC), the number of peripheral components of the video signal processing IC is minimized by...
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...
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 )...
7181636 Method of ensuring synchronous presentation of additional data with audio data recorded on a rewritable recording medium  
A recording medium and a method and apparatus for managing data are provided. The method includes recording additional data in a data file separate from a file containing main data and recording...
7127576 Method and system for data duplication  
According to one embodiment of the invention, a system for duplicating data is provided. The system includes a first recorder having an operating clock speed. An output port of the first recorder...
7092192 Videotape recording and playback device, and videotape player  
The object of the present invention is to reduce the load and specification requirements on the network and the video server. The buffer usage rate is counted and supplied to the tape driving...
7054089 Magnetic disk storage system  
The present invention provides a magnetic disk storage system including a spindle motor that rotates a magnetic disk, a spindle motor drive circuit that rotatably drives the spindle motor, a...
7034489 Positioning apparatus and controlling apparatus  
A rotational positioning apparatus that comprises an apparatus for moving a head or disk and that positions the head relative to the disk, with this rotational positioning apparatus capable of both...
7023155 Spindle motor acceleration control  
Method and apparatus for accelerating a multi-phase motor having a rotatable rotor is disclosed. A first commutation state in which the rotor resides is identified, a first position of the rotor...
7006320 Disk drive comprising a multi-phase spindle motor having a center tap connectable to a secondary supply voltage  
A disk drive is disclosed comprising an interface for receiving a primary supply voltage and a secondary supply voltage from a host computer. The primary supply voltage is applied to the windings...
6995937 Methods using extended servo patterns with multi-pass servowriting and self-servowriting  
The amount of position error written into a servo burst pattern can be reduced by using additional media revolutions to write the pattern. Where the edges of two servo bursts are used to define a...
6992847 Linear sliding tape scanner and method for using same  
An apparatus for helical scan recording/playback of preselected tacks on a flexible tape medium comprising a linear slide structure capable of movement transversely relative to a longitudinal...
6950270 Adaptive index reference position qualification  
Method and apparatus for performing a seek operation to move a data transducing head from an initial track to a destination track on a rotatable recording surface. A servo control circuit operates...
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...
6937429 Magnetic disk storage apparatus and method for controlling magnetic disk storage apparatus  
In a magnetic disk storage apparatus, when power supply is stopped, a magnetic head can be retracted safely and quickly so as not to be damaged. There are provided a back electromotive a force...
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...
6891687 Magnetic recording/reproducing apparatus capable of recording/reproducing data at the same head-cylinder revolving speed/configuration  
An input signal is recorded in a recording tape α by converting the input signal to a record signal through the modulation performed at the timing corresponding to the previously-specified number...
6876508 Disk drive comprising control circuitry powered by a secondary voltage supplied by a center tap of a spindle motor during a normal operating mode  
A disk drive is disclosed comprising an interface for receiving a supply voltage from a host computer and control circuitry for controlling at least one operation of the disk drive. The supply...
6710967 High frequency and low frequency servo pattern  
Servo tracks combine low frequency transitions for fine transverse positioning with high frequency fields providing additional information. In one embodiment, each servo frame has a first field of...
6437934 Self calibrating embedded stripe based timing tracking servo system for helical recorders  
The present specification discloses a preferred a preferred method, apparatus, and system for calibrating a magnetic tape system. The magnetic tape system comprises at least one head mounted within...
6429618 Index signal generator  
The index signal generator generates an original signal every the rotor of the direct-drive motor rotates, and delays the original signal by a delay time to produce index signal. The index signal...
6356405 Lubricant control in disc drive  
In a disc drive with a disc spun by a motor and a head positionable over the disc, a disc drive controller alternately leaves the head landed on successive landing spots in a landing zone on the...
6349012 Magnetic recording and/or reproducing apparatus  
A magnetic recording and/or reproducing apparatus has compatibility with a conventional analog signal recording/reproducing VTR and can realize an operation mode in which a digital signal is...
6344941 Magnetic tape unit  
A magnetic tape unit includes a magnetic tape, a magnetic head, a phase-locked loop (PLL) and a desynchronized track detector. The magnetic tape is provided with a plurality of tracks. The magnetic...
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...
6304399 Automatic head switching control method and apparatus  
An automatic head switching control method and apparatus detects whether an interval between a head switching point of time and a vertical sync signal is 6.5 horizontal sync signal intervals and...
6301069 Servo control apparatus utilizing clock signal and control data  
A servo control apparatus controls operation of a to-be-controlled object through execution of software based on control data and reference data. An operation-signal generating portion generates an...
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...
6233649 Digital signal reproducing method  
A method of reproducing digital signals recorded on a disk having first and second recording surfaces. The digital signals are in the form of a data frame including a lead-in block and n data...
6204986 Drum motor controller using microcomputer for intermittent slow VTR  
For intermittent slow activation, jitter is caused for reproduced image due to increase in the relative speed of a magnetic tape and a magnetic head. To solve this problem, a rotating speed of a...
6191900 Digital signal recording and reproducing apparatus and recording medium  
A digital signal recording and reproducing apparatus includes a plurality of heads. A digital signal containing an information signal is recorded on a recording medium via heads among the heads...
6188535 Arcuate scanning tape drive with a servo mechanism responsive to servo patterns in arcuate tracks on a moving tape  
A tape drive includes a rotary head assembly for recording and playing back a series of arcuate tracks on a moving tape where the tracks are transverse to the longitudinal axis of the tape. The...
6163427 Storing and reproducing digital video and audio on a magnetic tape having stored a signal readable by VHS analog apparatus  
A magnetic tape (2) and an apparatus (1) for cooperation with this magnetic tape (2) are configured in such a manner that video signals and audio signals can be stored in an inclined-track zone...
6154806 Method for recording digital signals on multiple-layered disks  
A method of recording digital signals on a disk having at least a first recording surface and a second recording surface. The digital signals are in the form of a data frame including a lead-in...
6147829 Magnetic tape with a track configuration and apparatus for cooperation with such a magnetic tape  
A magnetic tape (2) and an apparatus (1) for cooperation with this magnetic tape (2) are configured in such a manner that video signals and audio signals can be stored in an inclined-track zone...
6145034 Method and apparatus for switching data rates during back-up based on computer data and speed  
A tape drive method and system for backing up data files from a hard drive to a tape drive or restoring data files to a hard drive from a tape drive. The data transfer rate of the tape drive is...
6137648 Magnetic tape and a method for recording and reproducing a plurality of different information signals on and from the magnetic tape  
In an information signal recording method for recording one information signal on slant tracks formed on a magnetic tape housed in tape cassette usable in a conventional magnetic recording and...
6101060 Method and apparatus for reducing data loss errors in a magnetic tape device  
A method and associated apparatus for reduction of data loss errors in computer data tape transport applications. In tape transport devices with moveable read heads (i.e. auto-tracking...
6101059 Synchronized read/write heads for double sided tape recording  
Tape drives and methods for reading/writing on first and second surfaces of a tape include a pair of read/write heads for reading/writing on the surfaces at the same time in synchronism as the tape...
6078456 Variable-speed playback apparatus for digital video signals  
An apparatus and method for reproducing digital information recorded in tracks of a recording medium, such as a magnetic tape. A track number and a synchronization block number may be utilized to...
6069763 Data recording device  
A data recording device in which the data recording can be carried out at an optional speed without any loss of data using a buffer with less amount of memory. There are provided a memory buffer...
6061199 Method and arrangement for servoing and formatting magnetic recording tape  
In an arcuate scanner, a read head senses passage over a reference stripe recorded on a moving recording tape. Detection and logic circuitry respond to the read head signal to detect the reference...
6038096 Adaptive sector seeking method for reducing disk drive power consumption  
Method of reducing power consumption in a disk drive system by controlling movement time of a read/write head from a present track and present sector to a target track and target sector. The method...
6038094 Digital data recording device having a rotary cylinder  
A plurality of digital signals having total data rates of n bit/s or less are input to a digital recording device recording digital signals having a data rate of n bit/s. The digital signals are...
6031966 Motor speed control device  
The motor speed control device of the present invention is provided with an FG sensor and a waveform shaping circuit for obtaining N pulse signals (N≥1 where N is an integer) in one rotation of a...
6031681 Method and arrangement for servoing and formatting magnetic recording tape  
In an arcuate scanner, a read head senses passage over a reference stripe recorded on a moving recording tape. Detection and logic circuitry respond to the read head signal to detect the reference...
Matches 1 - 50 out of 554 1 2 3 4 5 6 7 8 9 10 11 12 >