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3930266 |
Control system for a recording/reproducing apparatus
In order to condition the recording/reproducing apparatus for forward playback, reverse playback, recording and like operations, a plurality of normally open control switches are connected to the...
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3928869 |
Video transducing apparatus
Monochrome and color television recording and playback circuitry for coupling of a video magnetic transducer head with a standard broadcast television receiver, the circuitry including an inductor...
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3922687 |
Means and method for creating a visible display utilizing high sensitivity magnetochemical particles
Improved means and method for creating a visible display utilizing magnetochemical particles that respond to a magnetic field by exposing an interface capable of reacting chemically with a...
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3918086 |
Tape element, system and method for reversal of tape movement during low sound levels
A system and method for handling elongated pliable recording tape where the tape carries an anti-phase control signal which preconditions the playback apparatus in which reversal of the tape will...
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3908095 |
Microphone-speaker device
A hand-held tape recording device comprising, within a casing, a reversible electro-acoustic transducer serving as both a microphone and a speaker which performs the functions of converting sound...
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3882507 |
Means and method for creating a visible display utilizing high sensitivity magnetochemical particles
Improved means and method for creating a visible display utilizing magnetochemical particles that respond to a magnetic field by exposing an interface capable of reacting chemically with a...
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3869716 |
APPARATUS FOR QUALIFYING RECORDED TONE BURSTS
Apparatus for qualifying recorded tone bursts on tape recordings. The apparatus includes connection means for connecting the apparatus to a tape player containing a tape with recorded tone bursts...
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3805293 |
SIGNAL PROCESSING SYSTEM
A system for recording and processing signals such as seismic signals is closed. The signals are recorded on three channels in phase. The output of each channel has a gain of 30 db relative to the...
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3793640 |
DEVICE FOR THE MAGNETIC DOMAIN "BUBBLE" STORAGE OF DATA
A device for the magnetic storage of information in which information is written on a magnetizable medium by means of the external field of a stable magnetic domain which is supported by a plate of...
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3793639 |
DEVICE FOR THE MAGNETIC STORAGE OF DATA
A device for the magnetic recording of information in which information is written on a magnetisable medium by means of the external field of a stable cylindrical magnetic domain which is supported...
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3725604 |
SIGNAL DETECTING APPARATUS FOR USE IN SOUND TRACK RERECORDING
A signal detecting apparatus for use in sound track rerecording comprising a magnetic storage tape having voice frequency signals transcribed thereon. A first magnetic pickup head is adapted to...
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3718772 |
DYNAMIC EGG PRESENTATION
A reproducing system for use as a high speed magnetic tape scanning instrument to provide for the superimposing of recurring signals such as ECG complexes on a visual indicator such as an...
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3701860 |
MAGNETIC RECORDING AND REPRODUCING APPARATUS WITH TIME CONTROL IN CARTRIDGE
The magnetic recording and reproducing apparatus is provided with timing means which starts the time counting from the leading end of the signals to be recorded on an endless magnetic recording...
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3689894 |
IMAGE STORAGE AND RETRIEVAL SYSTEM
A total image storage and retrieval system has a copier, step and repeat camera for photographing documents on microfilm frames, and means for developing the microfilm and assembling the frames on...
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3683407 |
HIGH DENSITY MAGNETIC RECORDING SCHEME
A method of high density magnetic recording with a single bipolar signal field using a magnetic recording head having a recording gap that is inductively coupled to a relatively moving...
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3683164 |
ANALOG CALCULATION APPARATUS FOR PERFORMING CONVOLUTION
An analog calculating apparatus in which an analog signal, which is a function of time and has been ( permanently ) recorded on a first channel track of a tape recorder is read out during a first...
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3678484 |
REVERSE-DIRECTION TAPE TRANSLATION
A tape recorder is provided with a removable tape cartridge unit which contains a pay-out or supply reel and a take-up reel. A brake inhibits movement of the reels when the cartridge unit is...
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3665429 |
RECORDED SIGNAL ENHANCING APPARATUS AND METHOD
Previously recorded magnetizable spot indicia carried on a magnetic surface medium, are each repeatedly accessed for reading by a magnetic head transducer by relative motion of the surface and the...
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3662403 |
MAGNETIC, AND MAGNETIC REMOVAL RECORDING
The present invention is characterized as means to scan remove magnetic particles from a magnetic coated tape; from tape having a magnetic printed basic pattern thereon such as equidistant...
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3657488 |
RECORDING AND REPRODUCING SYSTEM FOR WORK TIME STUDY
The invention relates to a work study recording system by which a work study engineer can analyze an operator's performance of a job consisting of a number of operations. The system has facilities...
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3651262 |
LASER SYSTEM FOR MAGNETIC RECORDING AND PLAYBACK
Video recording in a transverse format on magnetic tape is achieved by scanning a laser beam across a series of spaced photoconductive strips closely adjacent the magnetic tape recording medium....
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3647929 |
APPARATUS FOR REPRODUCING MUSICAL NOTES FROM AN ENCODED RECORD
Apparatus for reproducing music, either by playing or by printing a musical score. The music is recorded on a record medium, such as magnetic tape, which has at least one and no more than eight...
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3646535 |
METHOD AND APPARATUS FOR MEASURING TAPE SPEED
A monitor for sensing the instantaneous speed of a magnetic medium utilizing a single magnetic head having a first leg coupled to a signal generator and a second leg to a pulse peak detector for...
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3614337 |
ANALOG DATA ACCUMULATOR PROVIDING IMPROVED SIGNAL-TO-NOISE RATIO
An analog data accumulator which stores the first analog data from an analog data source in a tape recorder through an analog adder, reproduces the stored analog data to feed it to the adder...
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3603742 |
REPRODUCING SYSTEM UTILIZING ROUND FLEXIBLE MAGNETIZABLE RECORDING CARRIER FOILS
A reproducing system for recording or playback of the type in which a stationary plate is mounted beneath a rotating round flexible foil type record and the stationary plate is formed with an...
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3596004 |
VIDEO TAPE RECORDER WITH SOUND HEAD HAVING SEPARATE RECORD AND PLAYBACK ELEMENTS SHIFTABLE TO MAINTAIN A FIXED DISTANCE FROM THE VIDEO HEAD WHEEL
An apparatus for deriving at least two different information signals from a tapelike information carrier, especially the video signal and the sound signal of a television program from the magnetic...
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3595584 |
TRANSDUCER APPARATUS
A video and/or audio magnetic transducer apparatus includes a capstan assembly formed with at least one annular groove therein and a compressible medium in the groove for nonrigidly backing a...
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3587072 |
SEQUENTIAL-ACCESS MEMORY OF HIGH DENSITY USING FERROMAGNETIC THIN FILMS
A sequential-access memory of the magnetic disc, drum or tape type by using at least one magnetic head scanning successive memory zones of a storage medium. The storage medium comprises at least...
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3571527 |
MAGNETIC COPY SYSTEM
The invention concerns methods and apparatus for establishing accurate positioning and registration of master and duplicate magnetic record media during a magnetic transfer operation to insure...
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3569984 |
MAGNETIC RECORDING HEAD WITH A VARIABLE SIZE GAP
A magnetic recording head having a single tapered magnetic recording gap extending across the width of a recording medium which moves transversely thereto. A signal to be recorded, represented by...
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3569637 |
GAS ENVIRONMENT FOR RECORDER-REPRODUCER SYSTEMS
A technique is disclosed for minimizing undesirable frictional effects at the transducer-record medium interface of a recorder-reproducer system. The recorder-reproducer system is provided at the...
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3569636 |
RECORDING AT LEAST TWO SIGNAL CHANNELS IN A COMMON GROOVE OF A MAGNETIC RECORD CARRIER
Method and means for recording two separate signal channels, pertaining, for example, to the video and audio information of a television signal, in the walls of a recording carrier groove in the...
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3555205 |
APPARATUS FOR SCANNING TWO SETS OF ANGULARLY DISPOSED OBLIQUE TRACKS ON A MAGNETIC MEDIUM
Apparatus and a method for recording and reproducing a pair of electronic signals on a movable, flexible magnetic tape wherein the tape is helically looped about the circular paths of travel of a...
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3549823 |
AUTOMATICALLY REVERSING TAPE TRANSPORT WITH COAXIAL REELS
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3549822 |
MAGNETIC HEAD TRANSDUCER HAVING A PAIR OF SEPARATE SPACED NONMAGNETIC GAPS
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3529304 |
MICROSECOND SIGNAL RECORDING EMPLOYING MAGNETIC CABLE WITHIN DELAY LINE
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3524026 |
REMOTE DICTATION APPARATUS WITH AUTOMATIC CONTROL TONE ELIMINATION
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3519761 |
RECORD EXCITATION OPTIMIZATION METHOD AND APPARATUS FOR ROTARY HEAD MAGNETIC TAPE RECORDERS
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3497634 |
WIDEBAND INSTRUMENTATION ROTARY HEAD SYSTEM USING REDUNDANT RECORDING AND REPRODUCING
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3491351 |
METHOD AND APPARATUS FOR CANCELLING NOISE IN A MAGNETO-OPTIC READOUT SYSTEM
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3489862 |
APPARATUS FOR AUTOMATIC DETECTION AND ALARM OF FOULED MAGNETIC HEAD
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3475564 |
SYSTEM FOR SELECTIVELY REPRODUCING SIGNALS RECORDED AT DIFFERENT LEVELS
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3446943 |
INFORMATION STORING APPARATUS
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3444332 |
FLUX-GATE HEAD CIRCUIT
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3444331 |
FLUX-GATE HEAD READING
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3427408 |
MULTI-TRACK MESSAGE RECORDING APPARATUS
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3402387 |
Apparatus for moveout recording
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3387100 |
Means of recording and reading microwave energy
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3378825 |
Apparatus for summation of signals by pulse sampling
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3356996 |
Data transfer system
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