Matches 201 - 250 out of 411 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
5830590 Magnetic storage and reproducing system with a low permeability keeper and a self-biased magnetoresistive reproduce head  
A magnetic storage system includes a magnetic storage medium comprising a keeper layer of relatively low permeability soft magnetic material deposited upon a magnetic storage layer or between...
5818656 Circuitry for correction of thermal transients in the analog signal from a magnetoresistive sensor  
Thermal transient signal detection/correction circuitry corrects for errors caused by actual thermal asperities and baseline wander in the analog signal from a magnetoresistive (MR) sensor, such as...
5818655 Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit  
A signal processing circuit for a magnetic recording/reproducing apparatus, including at least an AGC, a PLL, a LPF, an equalizer circuit and a detection circuit, wherein a coefficient compensation...
5815333 Magnetic disc with a flat RAM area and disc device  
A magnetic disc having a ROM area and a RAM area which are separated. The ROM only plane and the RAM only plane are separated on the magnetic disc.
5764429 Magnetic writing of repetitive information on magnetic wheel and magnization head for media  
A method and apparatus for recording on magnetic media which comprises a magnetic wheel made from a magnetic material, that is essentially an isotropic material such as NdFeB (neodymium iron boron)...
5710675 Analog-to-digital converter for configuration control  
A disk drive circuit that includes a configuration resistor, a reference resistor, a capacitor and a processor. The processor is mounted on a first circuit assembly in the disk drive, such as the...
5703733 Magetic recording/reproducing method, magnetic reproducing apparatus used therefor, magnetic recording medium and method for producing the same  
A method for magnetically recording/reproducing comprising recording an information signal by forming a pattern of a soft magnetic material in a magnetic recording medium; providing a...
5696640 Disk drive using virtual hands for continuous access and execution  
A disk drive such as a magnetic disk drive includes a command-receiving mechanism for receiving a command from a host device, by which access operations for consecutive sectors are requested, a...
5654835 Magnetic disk controller capable of avoiding erroneous write operations to ZBR-type magnetic disks  
In a sector mark waiting state, when a sector mark detecting signal is input to a magnetic disk controller, the magnetic disk controller initiates a write operation of sector data on a magnetic...
5629682 Magnetic recorder having MR read and inductive write capability  
A magnetic encoder apparatus for determining the position of a moving object. The encoder has a merged magnetoresistive (MR) head capable of maintaining a magnetic transducing relationship with a...
5583727 Multiple data layer magnetic recording data storage system with digital magnetoresistive read sensor  
A magnetic recording data storage system uses a medium substrate with multiple data layers formed on it and a magnetoresistive (MR) read sensor that provides a direct digital output as it reads...
5583709 Method and apparatus for automatically selecting a noise reduction circuitry in playback mode  
Method and apparatus automatically select, in a playback mode, a noise reduction circuitry of a noise reduction system by which a middle-to-high frequency signal of a low level included in a...
5576100 Magneto-optical recording medium  
The invention relates to a magneto-optical recording medium having a magneto-optical layer which is composed of a quaternary alloy of Nd x Tb y Fe z Co m , the quantitative proportions of the...
5566296 Method and apparatus for eliminating noises with a read operation of magnetic disk unit  
A processor of a drive unit positions a head to a designated cylinder position of a disk medium on the basis of a command notified from an upper controller through a data bus and amplifies a read...
5550735 Compiling system and method for mass producing individually customized media  
A compiling system which can mass produce individually customized media, such as videotapes in a highly efficient and cost effective manner. High volume production is realized by matrixing...
5508866 Magnetoresistive sensor having exchange-coupled stabilization for transverse bias layer  
In a magnetoresistive (MR) read sensor in which the MR layer is transversely biased by a soft magnetic layer separated from the MR layer by a nonmagnetic spacer layer an antiferromagnetic...
5487171 System for reading and stopping reading data from magnetic tape into memory in response to mount command and write command respectively from the system processor  
In response to the mounting of a magnetic tape on the tape drive, the tape drive begins reading data from the tape into the preload buffer while concurrently signalling the data processor that the...
5461605 Information recording/reproducing method, recording carrier and apparatus for recording and/or reproducing information on information recording carrier by use of probe electrode  
An information recording/reproducing method and apparatus is for carrying out at least one of recording and reproducing information through a probe electrode or through a plurality of probe...
5450252 Hard disk drive including moving means for moving a recording/reproducing head and having a noise canceler utilizing series-connected filters in parallel with the moving means  
A hard disk drive includes a head for recording/reproducing data on a recording medium, a motor for moving the head on the recording medium, a motor driver for supplying a driving current to the...
5448421 Method for positioning an information processing head by detecting a magnetization pattern on a magnetic material positioned relative to a recording medium and a process for forming a recording and/or reproducing cantilever type probe  
A method for positioning an information processing head at a predetermined position on a recording medium includes detecting a predetermined magnetization pattern on a magnetic material having a...
5402278 Method for recording a positioning signal on a magnetic recording disk and apparatus for recording the same  
This invention relates to a method for recording a positioning signal on a disk having a projection pattern. The method includes rotating a magnetic disk having a magnetic layer on a non-magnetic...
5388011 Peak detector with look ahead  
A look ahead detector based on a delay line is used in a pulse amplitude qualifier circuit to qualify detected peaks in a system for the recovery of magnetically recorded digital information. The...
5363364 Audio data recording/reproducing apparatus having digital high-speed dubbing function  
A disc recording/reproducing apparatus according to the present invention intermittently records and reproduces compressed digital audio data in normal recording/reproduction. In high-speed dubbing...
5363251 Magnetic recorIding device  
In a magnetic recording device for magnetically recording Information on a magnetic recording medium by a magnetic head, the magnetic head is so oriented that the magnetic flux leaking at the head...
5361173 Devices for controlling recording and/or reproducing apparatus utilizing recorded management data and interactive information input apparatus for an electronic device  
In a storage medium, data for controlling a recording and reproducing apparatus is stored in a management database recording region provided in recording tracks. Management data recorded in the...
5349478 Magnetic recording and/or reproducing method having a double azimuth head arrangement  
A magnetic recording and reproducing method for enhancing picture quality and other characteristics while suppressing the difference in reproduction output between two heads. The method involves...
5343336 Magnetic recording reproducing apparatus with time code recording  
A first apparatus for recording/reproducing a video signal on/from a magnetic tape has a delay for delaying a composite sync (synchronizing) signal obtained from a reproduced video signal; a signal...
5319509 Method and apparatus for controlling and analyzing a data storage system  
A system and method for controlling and analyzing data storage systems, and more particularly, to systems and methods for controlling and analyzing performance and physical attributes of a sealed...
5296995 Method of magnetically recording and reading data, magnetic recording medium, its production method and magnetic recording apparatus  
The present invention uses a magnetic recording medium equipped with those magnetically readable recording servo pits which are preformed on a magnetic recording medium and have different magnetic...
5291472 Information recording and reproduction methods using oscillation medium or transducer  
High density recording systems and methods are disclosed which employ a radiation beam to form spot-like recordings in record members such as discs, tapes and cards. The angle, offset or...
5278704 Information processing apparatus including magnetic material having a predetermined magnetization pattern with respect to a recording medium  
An information processing apparatus including a recording medium, a magnetic material having a predetermined magnetization pattern with respect to the recording medium, a first device for detecting...
5274511 Servo signal recording method and apparatus  
An external position detector is mounted on a head arm that also carries a transducer for tracking a magnetic disk. When the head arm is moved at constant speed, the position detector produces an...
5270880 Predictive read-write inhibit decision using fuzzy logic  
A method for predicting and avoiding data errors by predicting disk drive read-write inhibit requirements in response to at least two parameters including a head position error and velocity with...
5270879 Magneto-optical disk inspecting method and apparatus  
This invention relates to a magneto-optical disk inspecting apparatus in which n pairs of a write head and a read head, and the area of the magneto-optical disk to be inspected is divided in n...
5225947 Low cost time indexed voice recorder system  
A time indexed voice recording system wherein tone coded time signals are received on one channel of an entertainment grade stereophonic tape recorder and the desired voice signals entered into the...
5216561 Apparatus and method of manipulating sum, absolute difference and difference signals for suppressing medium-induced playback error in a magnetoresistive head assembly  
A magnetoresistive (MR) head assembly includes an elongated MR element, arranged transverse to an adjacent magnetic recording medium, defining two substantially equal MR portions. Signal processing...
5130866 Method and circuitry for in-situ measurement of transducer/recording medium clearance and transducer magnetic instability  
A method and circuitry are described for sensing the clearance between a magnetic transducer and a moving magnetic recording medium in a magnetic disk or tape storage system or alternatively...
5123006 High density recording and reproduction system and method  
High density recording systems and methods are disclosed which employ a radiation beam to form spot-like recordings in record members such as discs, tapes and cards. The angle, offset or...
5079219 Storing information-bearing signals in a superconductive environment using vortices as digital storage elements  
Information-bearing signals are stored using high-temperature superconducting materials. Type II semiconductors, such as materials in the perovskite class, are used for recording. A vortex of...
5041922 Magnetic recording medium having magnetic storage and saturable layers, and apparatus and method using the medium  
Magnetic record media are described that have an overlying or underlying magnetically saturable high permeability keeper layer in addition to a high coervicity magnetic layer in which magnetic...
RE33559 System for enhancing audio and/or visual presentation  
A system for enhancing the perception of an audio and/or visual presentation by stimulating one or more persons experiencing the audio and/or visual presentation in response to events occurring...
4973123 Electro-optical rotary coupling suitable for tape scanners  
A device for transmission of signals between a stationary element and an element rotating about an axis (8), such as the headwheel (20) of a videotape apparatus, features optical transmission. At...
4972275 Wideband radio-frequency broadcast recorder and radio testing system  
A tape recording apparatus in the form of a modified VCR is employed to record broadcast signals received by an antenna while moving through a radio-broadcast reception area. The recorded signals...
4951276 Recording apparatus with switch actuated memory storage of recording medium removal or loading and backup power supply for memory  
A recording apparatus capable of exchanging the recording medium includes a switch arranged to operate when the recording medium is exchanged, an electronic memory for storing the output of the...
4939597 Video camera and recorder system having two standby modes  
An information signal recording apparatus having a rotary head for recording information signals on a tape-shaped recording medium, a cylindrical member for supporting the rotary head, and having a...
4932014 Data recording and reading system  
A data recording and reading system includes a recording medium having a plurality of fixed length recording units, recording units for recording data and associated data recording information...
4931886 Apparatus and methods to suppress perpendicular fields in longitudinal recording  
Methods and apparatus for suppressing perpendicular recording head field components that occur proximate recorded magnetic transitions on longitudinally recorded magnetic media with opposing...
4899231 Video camera and separable video recorder/reproducer arrangement  
A video system comprising a video camera and a recording device to record video signals obtained by the video camera. The recording device includes a video tape recorder (VTR) which may be combined...
4891712 Method of conducting marketing research by using video tape productions  
A new use of manufacture is disclosed. The marketing research method includes preparing a video tape for viewing by a member of a defined research sample. The tape is placed into a cassette and...
4864434 Method for writing a tri-phase servo pattern which provides information for positioning the transducers of a magnetic storage device  
Servo data, including three types of servo patterns distinguishable by phase, are stored in concentric servo tracks on a magnetic information storage disk. Each servo track includes a plurality of...
Matches 201 - 250 out of 411 < 1 2 3 4 5 6 7 8 9 >