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Match Document Document Title
7453665 Method of adjusting magnetic head of magnetic tape recording and reproducing apparatus and magnetic tape recording and reproducing apparatus  
Processing wherein a measurement signal and an erasure signal are recorded on adjacent tracks of a recordable tape 10 by one recording head HWi of n (i=1 to n) recording heads is effected on n...
7443626 Patterned disk medium for vertical magnetic recording, and magnetic disk drive with the medium  
A patterned disk medium includes a disk-shaped flat substrate including a first surface and a second surface located an opposite side of the first surface. First servo pattern areas including...
7436614 Data storage device and data storage device control  
Embodiments of the invention provide a data storage device and its control method that are capable of minimizing the possibility of head deterioration while maintaining the minimum required...
7420758 Head system, recording and reproduction system, and magnetic recording method  
Disclosed is a head system including a plurality of recording heads for azimuth recording. The system includes a first recording head having a plurality of magnetic gaps having a first azimuth...
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...
7265924 Servo writer with multiple servo write heads and a method of writing with the servo writer  
Disclosed is a servo writer in which a servo write head is easy to exchange, and which writes, to magnetic tapes, a servo signal from which a reading signal of the improved SN ratio can be...
7242547 Magnetic head device, rotary head device, magnetic tape device, magnetic disc device, and magnetic recording method  
A magnetic head device scanned to a magnetic recoding medium has a plurality of recording head elements laminated on a base via insulating layers, the plurality of recording head elements are...
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...
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...
7106535 Method and apparatus for maintaining consistent track pitch in helical scan recorder  
New helical recording scanner architectures and transducing methods provide a consistent track pitch for helical tracks despite positional errors in placement of transducing elements (or sets of...
7092187 Magnetic recording and reproducing apparatus and method and thin film magnetic head used therein  
The present invention provides a magnetic recording and reproducing apparatus, a magnetic recording and reproducing method, and a thin film magnetic head that enable a good contact between elements...
7031088 Apparatus and method for detecting an abnormality in a recorded signal  
An apparatus for detecting an abnormality of a recorded signal of a recorder/player includes a plurality of recording/reproducing heads for recording/reproducing a signal onto/from a medium, and a...
7023635 Recording/reproducing apparatus  
A recording/reproducing apparatus capable of switching over among a plurality of heads with high precision, wherein the apparatus is provided with: a recording/reproducing unit for...
7009794 Magnetic recording and reproducing device  
In a magnetic recording and reproducing device having a 1 ch head and a 2 ch head, an azimuth recording operation is carried out on an obliquely evaporated magnetic tape. Angles θ 1 and θ 2 ...
6985323 Alternating-azimuth angle helical track format using grouped same-azimuth angle heads  
A helical scan tape recorder ( 30 ) comprises a rotatable scanner ( 85 ) upon which is mounted a first set of plural transducing heads (W 1, W 3 ) and a second set of transducing heads (W 2, W 4...
6922298 Magnetic tape recording apparatus for recording tracks having same track pitch  
In a helical scan type magnetic tape recording apparatus, one thin film multi-recording head is mounted on a rotary drum, wherein the multi-recording head includes N recording heads for recording N...
6813109 Rotary magnetic head apparatus for performing reproduction operations using a plurality of reproduction heads without depending on the arrangement of the recording tracks  
A rotary magnetic head apparatus which can be formed into a smaller size in which signals of a plurality of recording tracks which are recorded on a tape-like information recording medium are...
6697209 Phase based time domain tracking for helical scan tape drive  
In a helical scan recording system, magnetic tape ( 31 ) is transported by a tape transport ( 98 ) proximate a rotating scanner ( 85 ). The scanner has a pair of read heads ( 82 ) mounted thereon,...
6639747 Signal recording and reproducing method and signal recording and reproducing unit  
The present invention relates to a signal recording and reproducing method used for video tape recorder. An erasing position precedes a recording position and a reproducing position precedes the...
6621981 Video signal recording/reproducing apparatus and reproducing apparatus  
A recording/reproducing apparatus or a reproducing apparatus has a first, a second and a third magnetic heads. The first and second magnetic heads have different gap azimuth angles and are spaced...
6618216 Digital tape drive  
One aspect of the invention is a digital audio tape (DAT) drive having a plurality of read and write heads. Each of the read and write heads has its own parameters, such as a cut-off frequency and...
6553455 Method and apparatus for providing passed pointer detection in audio/video streams on disk media  
A method and apparatus for providing passed pointer detection in audio/video streams on disk media. The present invention sets up an audio/video stream on a disk drive, uses read and write commands...
6549356 Rotary drum and magnetic tape recording/reproducing apparatus using the same  
There is provided a rotary drum which is capable of increasing recording density of a magnetic tape by changing tape/head relative speed and by solving problems which occur in increasing the...
6542322 Rotary head apparatus with high rate of data transfer  
In a rotary head apparatus a first reproducing magnetic head and a second reproducing magnetic head are oppositely arranged between a rotating shaft; and a first recording magnetic head and a...
6523747 Apparatus for reading permanently structured magnetic records  
An apparatus for reading permanently structured magnetic records having a first coercivity, comprising an oscillator having an inductive read head that is coupled to a circuit arrangement. At least...
6476993 Signal processing apparatus and method wherein control signals and power signals are superimposed  
A compact rotary transformer is disclosed. In the structure of the rotary transformer, a timing-signal producing unit detects a control signal superimposed on an electric power signal output from a...
6433945 Compensating write data in transformer-coupled recording system using DC content code  
A transformer-coupled tape drive ( 30 ) allows operation using a direct current (DC) content code. Usage of the DC content code is facilitated by a compensation circuit ( 240 ) which corrects...
6369966 Standby signal for audio FM demodulator  
In order to reproduce the audio signal which has been recorded as an FM audio signal in the slanted tracks of a recording medium in tape form by means of read/write heads arranged on a rotating...
6356403 Rotary magnetic head apparatus having reproduction signal wiring, power-supply wiring and recording signal wiring sections in a rotor and a stator arranged in a predetermined manner  
A rotary magnetic head apparatus is provided which can be formed into a small size even if a plurality of reproduction heads are provided. The rotary magnetic head apparatus includes a rotary drum...
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...
6304397 Magnetic recording/reproducing apparatus with rotary drum with magnetoresistance head for transducing DC-free code signals  
A helical scan magnetic recording/reproducing apparatus incorporating an MR head to serve as a reproducing magnetic head is arranged to convert data which is recorded on a magnetic tape into data...
6285519 Flat servo bursts for arcuate track scanner  
To control operations of an arcuate scanning head assembly, servo signals are written in one or more designated servo regions along a recording tape, for example along one or both edges of the...
6282042 Data processing apparatus and methods  
An adaptive filter 24 for filtering a signal comprising first streams interspersed with second streams (for example the A and B tracks of a signal retrieved from a tape storage device) comprises...
6278569 Signal recording apparatus and method  
A signal recording apparatus and method supplies recording signals to at least a pair of positive and negative azimuth magnetic heads provided on a rotary drum so as to be adjacent to each other in...
6263151 Recording/reproducing apparatus and reproducing apparatus  
In a recording/reproducing apparatus and a reproducing apparatus based on a helical scan system for recording or reproducing a video signal and an audio signal on or from a magnetic tape by use of...
6239932 Method of and arrangement for formatting a magnetizable medium  
An arrangement for recording servo signals on a magnetic tape has first and second adjoining write heads respectively driven by first and second write signals. Each write signal includes a servo...
6191907 Head drum for a magnetic tape recorder  
A head drum for a magnetic tape apparatus includes a stationary lower cylinder and a rotating upper cylinder on which at least one write/read head is securely arranged and interacts with a magnetic...
6175461 Rotary head block with rotary transformer having separate channels for power signal and playback signal  
A reproduction initial stage amplifier at the rotary side of a rotary head apparatus, prevents an adverse affect of a power transmission signal to a reproduction channel, operates such that a...
6172831 Method of recording/reproducing digital signal on magnetic recording medium through helical scanning by using read-after-write function and apparatus for carrying out the same  
A digital signal recording method and apparatus for recording digital signals of two channels along tracks on a magnetic tape in a helical pattern by employing at least two pairs of rotary heads...
6157508 Magnetic recording/playback apparatus  
A magnetic recording/playback apparatus for recording information to a magnetic tape and playing back the information from the magnetic tape, includes first and second recording heads which are...
6141166 Recording head arrangement for a magnetic recording device having a multichannel recording mode  
A magnetic recording device incorporating both a 2-channel recording mode and a multichannel recording mode in one piece of equipment and using recording heads in multiples of two. This magnetic...
6134074 Reproducing apparatus having tracking control in accordance with track number information  
There is provided a reproducing apparatus arranged to reproduce an information signal from a recording medium on which a number of recording tracks are formed in parallel with each other and the...
6122432 Information signal recording apparatus  
The present invention provides an information recording apparatus having a rotary drum, plural rotary heads provided on the rotary drum. Each of the plural rotary heads has a rotary transformer to...
6094319 Method and apparatus for tracking a helical track recording  
It is known in the case of digital helical track recording and replay apparatuses for audio, video and general data to be recorded for pilot tones to be interleaved in the data tracks, for...
6091561 Magnetic recording/reproduction apparatus which simultaneously scans two continuous tracks in both standard and long play modes  
A magnetic recording/reproduction apparatus of an azimuth system for recording/reproducing a digital signal by helical scanning a magnetic tape has an SP mode and an LP mode having...
6081398 Recording/reproducing apparatus with read-after-write capability  
A rotary head recording/reproducing apparatus for recording and reproducing digital signals into and from helical tracks on a tape-like recording medium with a rotary head is disclosed. The...
6021014 Method for generating head switching signals in video cassette recorder using head drum pulse and video tape envelope signals and apparatus therefor  
A head switching signal generation apparatus for a VCR includes a pulse signal generator for generating a first pulse signal having the same phase and period of time as a head drum pulse signal in...
6014278 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...
6011665 Helical scan type information recording device  
A device for recording an information signal on a magnetic tape by using a helical scan include a rotary drum, a plurality of types of magnetic heads including at least one magnetic head of each of...
5995311 Head switch sequence to protect magneto-resistive (MR) head  
A switch device switchable as a first channel (200) to an inactive state and a dummy channel (201) to an active state the switching device switches the dummy channel to an inactive state while...
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