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8036076 |
Method of reducing storage power consumption by use of prefetch and computer system using the same
Provided is a computer system including: a computer running as a DB server; a storage system including a plurality of disk drives for storing data; and a management module, in which: at least one...
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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...
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7046466 |
Dual density recording for direction-dependent linear media
The invention provides a linear data storage medium, such as magnetic tape, in which data tracks that extend in one direction are recorded at a different density than data tracks recorded in the...
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6961510 |
Reproducing device with automatic change-over between trick-play speeds
In a reproducing device (1) for the reproduction of reproduction data (WD) recorded on a magnetic tape (2), having transport means (7) for the transport of the magnetic tape (2) with a normal-play...
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6768604 |
Method for reduction of off-track errors in data storage tape systems
Embodiments of a data storage tape control system are disclosed that works to prevent or reduce frequency of off-track errors. The invented method slows tape speed in response to the writing head...
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6282047 |
Recording and/or reproducing apparatus
A recording and/or reproducing apparatus having a plurality of tape transport modes is arranged such that, in changing a stop mode over to a desired mode through an intermediate tape transport mode...
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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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6219487 |
Record mode discriminating apparatus using non-pilot repetitive signals
A record mode discriminating apparatus used in a magnetic recording/reproducing system records a record mode discriminating signal having a predetermined periodicity that is dependent upon the...
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6157772 |
Method and apparatus for reserved-recording a plurality of broadcast programs
A reserved-recording method and apparatus is provided in which a plurality of broadcast programs reserved within a certain time are recorded as many as possible within the limit of capacity of a...
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6122129 |
Apparatus for reproducing signals from a tape medium
An apparatus for reproducing signals which are recorded on a tape to form oblique tracks thereon. The apparatus includes a drum which has a plurality of rotary heads adjoining each other for...
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6031679 |
Magnetic recording/reproducing apparatus capable of reproducing digital data at minimum error rate
A magnetic recording/reproduction apparatus is provided which is designed to record and reproduce digital information signals on and from a magnetic tape at a reduced error rate in a long play...
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6031678 |
Reproducing apparatus settable in a search reproduction mode from operation in a normal reproduction mode
A reproducing apparatus having a phase-locked loop for controlling recording medium transport has selectable normal and search reproduction modes and is settable to the search reproduction mode...
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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...
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5973873 |
Motor speed control circuit for a videocassette recorder
In a motor control circuit for a VCR, a microcomputer calculates a center frequency to be targeted by a drum motor based on frequency pulses from the capstan motor, and generates a speed control...
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5808823 |
Method and circuit for reducing battery power drain in a portable cassette player
A technique is disclosed for reducing the power consumption of a battery powered cassette player typically including a motor. The technique includes sequentially operating the motor during a first...
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5790339 |
Video tape playback mode decision circuit and video apparatus using the same
A video tape playback mode decision circuit has a mode detection circuit, a control signal presence/absence detection circuit and a mode selection circuit, and is additionally provided with a tape...
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5784215 |
Method and apparatus for recording and reading variable speed data using a rotating drum device
A method and apparatus for recording and replaying variable speed data uses a rotating drum device. When information to be recorded is presented to the transfer rate of the information, be recorded...
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5745318 |
Digital video tape reproducing apparatus for reproducing video signals from tracks in a magnetic tape having reproducing heads having widths the same as or different from that of the recording heads
In a digital video tape recording and/or reproducing apparatus including a pair of rotary magnetic heads having a predetermined head width and gaps with mutually different azimuth angles which...
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5687037 |
Video tape recorder for long-play mode recording/reproducing
A video tape recorder for long-play mode recording/reproducing includes a capstan servo circuit including a N-multiplying means for inputting a capstan frequency signal and multiplying the input...
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5659435 |
Method for controlling tape running
A method for controlling tape running in a tape driving apparatus in which the size of a hub is determined when a tape is inserted into the tape driving apparatus and the number of reference pulses...
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5640629 |
Information recording device with control of film transport
An information recording device of a camera permits recording of more information with an appropriate recording density without monitoring the film feeding speed constantly. The information...
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5625615 |
Optical storage drive employing variable write speed for reduced laser write power
By adjusting the advancement rate of an optical data storage medium in response to the amount of data to be written, and operating a laser with a minimum amount of write laser power level for the...
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5579185 |
Video tape recording/reproducing apparatus having automatic predict and mode changing capability
An apparatus and process are disclosed for automatically changing the speed of a recording tape from a first speed to a second speed, based on a one-time determination of predicted time of...
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5550682 |
Mode discrimination circuit for an image recording/playback system utilizing peak detectors
A circuit for detecting the recording/playback mode of a system, e.g., a video tape recorder (VTR), for recording/playing back an image signal on/from a recording medium, using first and second...
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5493456 |
Method and apparatus for increasing the recording time of a digital video tape recorder
Method for increasing the recording time of a digital video tape recorder ("VTR") and for supporting multiple normal play modes of digital VTR operation, e.g., a standard play mode of operation and...
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5446605 |
Method and apparatus for moving head from one tape track to another against the risk of damaging the tape
A bidirectional, multitrack magnetic tape subsystem is disclosed which is for use with a two-reel, belt-driven tape cartridge in which the tape tension increases linearly with tape travel in either...
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5444580 |
Apparatus for recording/reproducing digital data on/from recording medium
A helical scan type digital recording/reproducing apparatus arranged such that data corresponding to m fields/frames are divisionally recorded in n tracks on a magnetic tape and a slow, still or...
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5432657 |
Cue and review mechanism for a tape recorder
A tape recorder is disclosed in which an accurate cue & review operation is possible without being influenced by the wound state of a magnetic tape or the fluctuation of the mechanical load.In the...
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5371881 |
Universal timing controller for video tape recorder servo system of different formats using time multiplexed switching network
A microcomputer constructed on a single semiconductor substrate comprises a microprocessor CPU, a read only memory ROM, a random access memory RAM, a common bus BUS for electrically connecting the...
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5363253 |
Tape drive fast seek to end-of-track
A tape drive control system with improved overall dam transfer rate. A streaming tape drive system for a multi-track serpentine data tape is controlled by a host computer. The data tape has a fixed...
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5363254 |
Tape recorder capable of varying tape speed
A tape recorder comprises a reproducer for reproducing an information signal recorded on a tape-shaped recording medium, a transporter for transporting the tape-shaped recording medium, a dial and...
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5353177 |
Method and apparatus for positioning a magnetic head unit on a track centerline
A read/write head unit is moved across a reference burst track on magnetic tape from one longitudinal edge thereof toward the other through a series of transverse locations. The peak amplitude of...
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5349479 |
Data transfer method of magnetic recording/reproducing apparatus
A data transfer method of a magnetic recording/reproducing apparatus which makes it unnecessary to repeatedly stop and start a recording operation or a reproducing operation in spite of changes in...
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5349481 |
Apparatus and method for distorted track data recovery by rewinding and re-reading the tape at a slower than nominal speed
A helical drive system (10) reads tracks (18) on a storage medium (12), including tracks which appear as distorted tracks. Each track (18) comprises a plurality of blocks of data, with each block...
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5282097 |
Automatic search method for a record/play system
An automatic search apparatus for a record/play system of a record medium having a plurality of recorded programs, and a controlling method thereof. The apparatus discriminates the presence of...
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5253121 |
Recording and/or reproducing apparatus
In a recording and/or reproducing apparatus, a recording medium is reproduced for a predetermined period of time when it is detected by sequentially searching the record medium that date...
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5245485 |
Multiple tape thickness, multiple recording format tape drive systems
The invention is one or more tape systems which determine the length of tapes mounted therein to assess the thickness of such tapes. A format identifier is written at one of a plurality of...
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5239429 |
Video signal reproducing apparatus
A video signal reproducing apparatus for reproducing video signals from a tape-shaped recording medium with a rotary head. A memory capable of storing at least a video signal corresponding to one...
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5235471 |
Method of converting the data rate of a data signal
A method of recording and/or playing back a data signal, in an apparatus in which a tape helically encircles a drum containing a headwheel, and the heads scan oblique tracks on the tape, features...
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5218487 |
Audio tape operation on a DAT data storage drive
A computer storage DAT drive which detects the form of a DAT tape and provides an audio signal output in response to an audio DAT tape. The drive rewinds the tape and then plays the tape at a speed...
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5157562 |
High-speed magnetic tape transfer apparatus allowing use of a smaller capacity reel motor by assisting the high-speed transfer with a capston motor
This invention relates to a high-speed magnetic tape transfer apparatus which has a reel motor for transferring tape wrapped around a cylinder having a rotary head at high speed and a capstan motor...
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5146373 |
Information signal reproducing apparatus with function of detecting track pitch
An apparatus for reproducing an information signal from a recording medium on which many tracks are formed, by periodically tracing the recording medium with a recording head. The position of the...
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5138504 |
Tape transport control apparatus for switching from high speed reel drive to low speed capstan drive without stopping the tape
A tape transport control apparatus relating to changing means of high speed reel control transport and low speed capstan control transport in a tape transport control of a magnetic recording...
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RE33765 |
Record/playback apparatus automatically skips unnecessary information during playback
An apparatus for recording and/or reproducing a digital signal on a recording medium having at least a program start signal and program information recorded thereon, further records an identifying...
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5057784 |
Automatic reading apparatus for capstan reproducing speed mode
An apparatus for automatically reads a mode of a capstan reproducing speed by counting pulse signals generated from a capstan motor. This apparatus uses a pulse generator for generating pulse...
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5047872 |
Fast and slow playback method and apparatus for data recorded on magnetic tape
The rotary headwheel device for scanning oblique tracks on an advancing magnetic tape is provided with normal playback heads which follow the recording heads and trace the path of the same oblique...
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5032937 |
Magnetic tape recording and/or reproducing apparatus having automatic mode changing capabilities
A magnetic tape player which includes a tape transport speed selector capable of assuming one of first and second modes during which the magnetic recording tape is transported at a first transport...
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4963991 |
Video tape recorder capable of recording both narrow band and wideband signals
Disclosed is a video tape recorder capable of recording and reproducing signals with largely different frequency bands such as narrow band signals including NTSC signal and wide band signals...
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4963810 |
Variable load motor drive control
The invention relates to a method and apparatus for making low inertia motors useful under circumstances where the load exerting drag on the motor during start-up acceleration may be different from...
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4956730 |
Apparatus having a high-speed search capability for reproducing signals recorded on a tape
An apparatus for reproducing signals recorded in slanting tracks on a recording tape including tape position information recorded at a specified area on each track apparatus has a tape speed...
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