Abstract: A VTR capable of recording information signals, such as a time code, and more particularly providing a configuration for after-recording the information signals for controlling the operation of the VTR, which comprises an operation panel; a mode determination block for determining a mode to be next switched; an information signal processing block for recording and reproducing the information signals; and a recording period setting circuit for determining a recording period of the information signals. A mode signal inputted through the operation panel is recorded on a predetermined position on a magnetic tape. When such a magnetic tape is reproduced, the VTR is forcibly set in a mode determined by the mode signal at the time of detecting the mode signal.

Abstract: A method for recording and reproducing video data of a digital video cassette recorder (VCR), wherein the method of recording encoded video data onto a magnetic tape records video data of a field after distributing and arranging the data in order, corresponding to a transit orbit of a rotary head when reproducing at a variable speed, thereby providing a picture having a good quality when reproduced at the variable speed, equal to that when reproducing at normal speed.

Abstract: An apparatus for generating a high speed dubbing signal to be recorded by an external recording apparatus. The high speed dubbing signal, whose pitch is N times that of a digital input signal, is generated as follows. An encoding circuit subsamples the digital input signal consisting of frame signals each of which consists of N field signals, so that each frame signal is compressed by a factor of N to be contained in one field interval. A digital signal recording and reproducing circuit including a recording and reproduction system, records on a tape, at a normal tape speed and at a normal head drum rotational frequency, the compressed signal in such a manner that each field including the compressed signal appears once per frame interval, and then selectively reproduces from the tape the field including the compressed signal at a tape speed N times the normal speed and at the normal drum speed.

Abstract: A retrieval device and method for retrieving audio signals recorded on a floppy disk, in which the audio signals are reproduced by an amount needed to recognize the content of the audio signals to obtain a heading of the audio signals. A track of the floppy disk is divided into sectors. The audio signals are recorded in various sectors, and the head of the audio signals are recorded in one of the sectors. The audio signals are reproduced from the head, and can be reproduced within a predetermined time, regardless of a compression ratio compression ratio that is used, and the audio signals may be that is used with the audio signals. The amount of the reproduced audio signals may be changed in accordance with the reproduced at a high speed.

Abstract: For the purpose of data compression and expansion in the playback mode reproducing data including video data and audio data recorded on a magnetic tape, a relative speed signal is generated from a circuit on the basis of the moving speed of the magnetic tape and the rotation speed of a head drum, and the characteristic of the recorded data is controlled according to this relative speed signal. The tension of the magnetic tape is detected by a circuit, and the phase difference between the detected tape tension signal and a reel rotation speed command signal is detected by a circuit so as to control the tape tension according to the detected phase difference.

Abstract: A drive device for a magnetic head (6) reciprocally movable in a slot (8) in a bank printer is suspended on a driving cogged belt (1), the cogged side of which at the same time serving as a covering for the slot to prevent the front edge of an inserted document from catching in the slot (8) in the document-supporting surface ( 7 ). The cogged belt can run with its smooth snide over smooth rollers (2, 3) at either end of the slot.

Abstract: The present invention relates to a digital image signal recording/reproducing apparatus and the method thereof which can maintain a track spacing whereto a digital image signal is recorded during a long time mode in the same way as in the normal mode when the digital image signal is recorded on the recording medium, so that the crosstalks between channels caused by narrowed channel spacing of a tape can be prevented to thereby obtain an effect of a clear picture without a picture quality degradation.

Abstract: A video recorder compatible receiver for receiving video data from a video recorder such as a video tape recorder ("VTR"). The receiver includes an error concealment circuit, a digital VTR port adapted for coupling to a VTR and/or a tuner module. The receiver receives digital video data from the VTR by either the digital VTR port or the tuner module. VTR commands may also be received from a VTR. Upon receiving a VTR command indicating that the VTR is operating in trick play mode or upon detecting video data that is indicative of VTR trick play operation, the error concealment circuit of the receiver disables normal play error concealment and enables trick play error concealment. The error concealment circuit may perform temporal and spatial filtering on the video data received from the VTR when trick play error concealment is enabled.

Abstract: A broadcast recording and playback device employing a "circular buffer" which constantly records one or more incoming audio or video program signals and a microprocessor for accessing the memory to read a playback signal from the circular buffer to display programming material delayed from its receipt by a selectable delay interval. The circular buffer is implemented by a digital memory. Subsystem comprising the combination of a semiconductor RAM memory and a disk memory operated under the control of a microprocessor such that incoming signals are constantly recorded as received while, at the same time, delayed signals are being read from the memory subsystem at a different memory location selected by a microprocessor to provide a user-selected time delay.

Abstract: An index scan apparatus and the method thereof applied to a video tape recorder. Video signals corresponding to one screen among reproduced video signals are stored whenever an index signal is detected during the reproducing mode, and video signals received during the setting of an index scan mode are displayed into a main screen and video signals stored on the memory corresponding to the detected index identification data are displayed by a plurality of subscreens. Thus, the user is easily able to find the desired program from among the programs recorded on a magnetic tape.

Abstract: A reproduction speed controller for controlling reproduction speed of a video signal having first field image signal and second field image signal including main memory having a storage capacity of two field image signal, sub memory having a storage capacity of at least one field image signal, write unit for writing an input video signal into the main memory and the sub memory in synchronism with a write reference signal which corresponds to a frequency of the input video signal, read unit for selectively read out the written video signal from the main memory and the sub memory in synchronism with a read reference signal having a fixed frequency, passing detection unit for generating a passing detection signal on the basis of the frequency difference between the write reference signal and the read reference signal when the frequency of the write reference signal is lower than the frequency of the read reference signal, and control unit for controlling the write unit and the read unit in response to the passin

Abstract: A processing system and a recording/reproducing system for a digital signal including a digital video signal and a digital audio signal. Upon transmission, the digital signal is transmitted after time-base compression and modulation. The transmitted signal is received and demodulated. In the case where the signal is to be transmitted to a plurality of recording/reproducing systems, address signals designating ones of the plural recording/reproducing systems and a control signal for controlling the start/stop of recording are transmitted. The recording by the recording/reproducing system is controlled so that it is made with the same format in either normal-speed or high-speed mode or in either normal or multiple recording mode.

Abstract: A variable-speed regeneration compensating apparatus for a double azimuth 4-head type video tape recorder comprises first and second standard speed regenerating heads, first and second low speed regenerating heads, a standard speed regeneration head switching part, a standard speed regeneration envelope detecting part, a low speed regeneration envelope detecting part, an envelope comparing part, a standard speed recorded medium regeneration signal switching part, first and second time constant circuits, a time constant circuit switching part, and a low speed recorded medium variable speed regeneration compensating circuit. Compensation is provided not only to the case where the picture data having undergone a standard speed recording which is subjected to variable speed reproduction, but also to the medium having undergone a low speed recording, and therefore the stripe shaped optical noise is eliminated making the low speed recording/regenerating of video tapes easier.

Abstract: A time difference slow mode control circuit of a video tape recorder for controlling a capstan motor by picking up the reproduction control signal from a magnetic tape, in the time difference slow mode, generates delayed phase-delayed pseudo reproduction control signal by a half period of a head switching pulse, the frequency of the pseudo reproduction control signal being the same as that of the reproduction control signal, thus controlling the capstan motor so that the video tape recorder may have a normal time difference slow mode even when a pick-up error arises and thereby improving screen quality.

Abstract: In a motion picture decoding system, forward and reverse reproduction is carried out smoothly at a high speed without increasing an operation speed for decoding. When high speed reproduction from a record medium containing motion picture coded data is selected, a rate of data input is controlled so that a speed for reading from the record medium to a buffer is increased. Motion picture coded data is fetched from the buffer to a demultiplexer. The fetched data is separated into picture data of frames to be decoded and picture data of frames to be abandoned at a constant frame interval. Only the picture data of the frames to be decoded is sent to a further stage where the picture data is decoded at a speed equal to that for an ordinary reproduction. Thereby, high speed reproduction in forward and reverse directions can be executed without increasing the speed of the decoding operation.

Abstract: An apparatus in which an information signal recorded on a tape-like recording medium formed with a number of tracks in accordance with a first or second recording mode in which the number of recording tracks per unit time differ, is reproduced from the tape-like recording medium by reproducing assembly including first and second reproducing heads.

Abstract: A sound repeater unit is to be used with an audio input equipment, such as a cassette or video tape recorder, and an audio output equipment, such as a television set or a loudspeaker. The audio input equipment has a control unit which is actuated so as to operate the audio input equipment in a paused state. The sound repeater unit includes a pause control circuit receiving an activating signal from the control unit and a programmable signal repeating circuit controlled by the pause control circuit so as to record continuously an audio frequency output of the audio input equipment while overwriting a previously recorded audio frequency output of the latter. The pause control circuit further controls the signal repeating circuit so as to output repeatedly a portion of the audio frequency output, which portion was recorded within a predetermined time period immediately before the audio input equipment was paused.

Abstract: A disc reproducing apparatus comprises a reference frequency generating circuit that generates a reference frequency signal. The frequency of the reference frequency signal from the reference frequency generating circuit is varied whereby a disc is reproduced at both a first and a second constant linear velocity, the second velocity being higher than the first. The improvement over the prior art is that the frequency of the reference frequency signal is varied gradually in steps upon switching from the first constant linear velocity to the second constant linear velocity.

Abstract: A laser video disk master is operated at 2.times. speed for duplicating video information to be recorded in VHS format. Two last disk video players are modified to operate in synchronism in order to multiplex from one to the other in duplicating video programs of length equal to the two recorded disks. The 2.times. frequency NTSC format video output signal is then demodulated, drop out detection is performed, and the digitally-encoded stereo audio information is separated, error corrected, and converted by digital to analog (D/A) conversion to left and right channels of stereo analog information. The left and right channels of audio information are presented simultaneously to an FM modulator for presentation to rotating video heads and to a 2.times. Dolby processor for presentation to linear heads. The demodulated 2.times. video information is converted to digital information by an analog to digital (A/D) converter and then time-base corrected and drop out compensated.

Abstract: An optical disc playback device for playing back video data employs a rotation signal generation circuit for generating a signal at a period of a rotation angle provided by dividing one rotation of a disc motor to detect a record position on a disc of picture data stored in a picture memory. A laser beam spot is caused to jump a predetermined number of tracks each time a position on the disc has a specific relation to the record position in response to a signal generated by the rotation signal generation circuit whereby a still picture playback and a still picture shifting can be made frame by frame.

Abstract: An information record medium playback apparatus including a memory for writing in a demodulated video signal characterized in that it generates a field discrimination signal indicative of the positions on the time base of the odd and even fields of the demodulated video signal written in the memory and generates a read field signal indicative of the positions of the odd and even fields of the demodulated signals to be read out from the memory in accordance with a read timing signal and makes a time base adjustment of the demodulated video signal based on the phase difference between the positions on the time base indicated by the field discrimination signal and the read field signal.

Abstract: During the playback operation for freezing and storing a specific frame of a picture in a memory and thereafter printing the frame, the recording medium is turned reversely for a prescribed amount according to an instruction from a printer in response to the entry of the freeze command in order to accurately search the frame at the entry of the freeze, and thereafter the recording medium is played back in normal mode. The amounts of reverse turn and the successive forward turn in normal playback are counted and compared, and when the difference has become a prescribed value, a freeze signal is produced and the frame of the picture selected by the freeze command is stored in the memory and printed when required. This control method for use in a video print system is designed so that the recording medium is turned reversely for a prescribed amount according to an instruction from the printer and then stopped until the next command is entered.

Abstract: A solid state motion analysis system stores images of an event at a fast frame rate and plays back the images at a slower frame rate to facilitate analysis of the event. The motion analysis system includes a solid state imager which is selectively operable at different frame rates and further includes a solid state memory for storing a plurality of image frames. A trigger circuit includes a telephoto sensor which senses a change in a scene being imaged by the motion analysis system. When a scene change is sensed, the trigger circuit produces a trigger signal to alter the mode of operation of the motion analysis system. Thus, storage of image frames in the solid state memory may be started or stopped when a change in luminance of the scene occurs.

Abstract: A system is provided for controlling positions of record tracks relative to a scanning trace of a head device. An envelope detector detects an envelope of an output from a head device operative to scan a record tape along a scanning path transverse to record tracks. A pulse generator produces two pulses appearing respectively at predetermined time points in a period of a scanning trace of the head device. A level sampler samples a level of a detection output from the envelope detector with the pulses produced by the pulse generator to produce two sampled outputs. An improper position detector detects improper positioning of a group of record tracks traversed by the head device relative to the scanning trace of the head device based on a difference between the sampled outputs from the level sampler.

Abstract: A video signal reproducing apparatus plays back at a high speed a recorded signal recorded on a recording medium, eliminating noise bars in the reproduced image by replacing a noise portion, that is, a signal portion reproduced by a magnetic head having a different azimuth from the azimuth of a track on the recording medium, with a corresponding signal portion of a previously reproduced track having the same azimuth as the magnetic head. The recorded signal is a shuffled video signal having mutually adjacent lines of one field recorded on different tracks of the recording medium in a predetermined sequence. Then the apparatus deshuffles the reproduced signal devoid of noise bars to obtain a deshuffled video signal.

Abstract: In a time base correcting apparatus having a memory for storing a reproduced video signal reproduced by a rotary magnetic head from slant tracks on a magnetic tape which is transported at a desired tape running speed that may be different from a tape running speed used when recording the video signal on the tape, a write in-line address counter for generating a write in-line address signal and a write line address counter for generating a write line address signal supplied to the memory, a write clock signal generating circuit for generating a write in-line address increment clock signal and a write line address increment clock signal which are each synchronized with a reproduced horizontal synchronizing signal separated from the reproduced video signal, and which are supplied to the write in-line address counter and the write line address counter, a read in-line address counter for generating a read in-line address signal and a read line address counter for generating a read line address signal supplied to t

Abstract: A device capable of reproducing recording information without error and which eliminates a deterioration in a reproduced image quality during a dubbing operation. The still image reproducing device has a change-over switch that is capable of selectively delivering a demodulated image signal obtained through delaying an image signal by a time corresponding to 0.5 H. A control circuit outputs a switching control signal upon completion of one full rotation of a recording medium. A decoder decodes the demodulated recording information in response to a decoder control circuit, enabling the decoder to operate when the change-over switch is delivering the demodulated composite image signal. In the still image recording device, the composite image signal is FM demodulated. The demodulated composite image signal is multiplexed with a signal obtained by encoding and modulating the recording information. The multiplexed signal is supplied to a recording head through the gate circuit.

Abstract: In an apparatus for digitally recording and reproducing video and audio signals in successive parallel slant record tracks on a record tape; pluralities of recording heads are mounted on a rotary drum at diametrically opposed positions so that one field of a video signal is recorded in a plurality of the tracks scanned by the recording heads as the record tape is advanced at a predetermined speed, a pair of bimorph leaves are mounted at respective opposed positions on the rotary drum, a plurality of reproducing heads are disposed on each of the bimorph leaves to be deflected by the respective bimorph leaf in a direction transverse to the direction along the record tracks when, in a reproducing mode, the tape is advanced at a speed different from the predetermined speed used for recording, and the number of the reproducing heads is greater than, for example, twice, the number of the recording heads for relatively reducing the maximum deflections of the reproducing heads by the bimorph leaves needed to achieve

Abstract: A still image reproducing system includes reproducing structure for reproducing still image data recorded on a recording medium. Instructing circuitry is provided for issuing instructions to cause movement of a reproducing position of the reproducing structure. Circuitry is provided for measuring a time interval between the instructions issued by the instructing circuitry. Control circuitry is provided for selecting one of a plurality of operation modes of the reproducing structure according to the time interval measured by the measuring circuitry. The operation modes include a first mode in which still image data reproduced by the reproducing structure is muted, and a second mode in which still image data reproduced by the reproducing structure is not muted.

Abstract: The present invention proposes a memory device comprising a fixed disc on the surface of which data may be stored, and rotating transducers or heads which may be positioned to access any location on the disc. The rotating heads are mounted on transducer arms which are designed in such a manner that the transducer seeks outward as it is rotated. That is, similar to a flywheel governor in a steam engine, centrifugal force would impart a radial force on the arm which is movable in a low friction system along with the transducer, the radial force causing the transducer to move outward together with the radial arm with increasing rotational speed of the spindle motor.

Abstract: Disclosed is a reproduction apparatus for reproducing signals from a recording medium which is capable of recording audio and video signals. The reproduction apparatus includes a memory which stores information regarding the content of recording on the recording medium; a reproduction mode selection device which selects at least three reproduction modes which include a mode for reproducing sound and image, a mode for reproducing sound only and a mode for reproducing image only; and a reproduction device which reproduces signals recorded on the recording medium with reference to the information stored in the memory according to the reproduction mode selected by the reproduction mode selection device.

Abstract: An image search control apparatus provides an index number to a reproducer having a storage medium on which a plurality of still images constituting a motion picture is stored. Each still image is identified by an index number. The reproducer reproduces and provides as a video signal the plurality of still images constituting the motion picture and the index number of each still image. Alternatively, in response to receiving an index number, the reproducer reproduces and provides as the video signal the still image corresponding to the received index number. The image search control appartus comprises a selector that receives the video signal from the reproducer and that selects from the still images constituting the motion picture a number of selected still images. An index memory stores each of the selected still images and its index number. A display receives the video signal from the reproducer and also receives a number of selected still images from the index memory.

Abstract: A still image signal reproducing apparatus repeatedly reads still image data recorded in an image data recording medium such as an optical disk to successively generate still image signals represented by the data, and still images indicated by the still image signals are successively displayed at high speed on a television picture monitor so that the user can browse the displayed still images for retrieval of a desired still image. When the desired still image is recognized, the user instructs the apparatus to stop the retrieval process. Then, the apparatus automatically displays a previous still image which is a preset number of still images in advance of the presently displayed still image, so that the desired image can quickly be retrieved regardless of the response time of the user.

Abstract: In digital recording/reproducing apparatus of the invention, picture signals are digitalized, digital data for picture elements constructing each picture is stored together in a memory, and digital data is read out from the memory and recorded on a recording medium in a predetermined order. The memory includes plural memory regions for successively storing digital data corresponding to a predetermined number of picture elements in direction of horizontal scan of a picture. Data for every memory region is stored on the recording medium and thus memory regions are set on the recording medium corresponding the memory regions of the memory. In normal reproducing, all data is read out and is displayed. In search, only data stored in a memory region previously selected out of the plural memory regions is read out and displayed. Since only part of data constructing a picture is read out and displayed, time for read-out of data is shortened and thus a search is completed in a short while.

Abstract: A video signal reproducing apparatus, such as a video disc player, equipped with a field memory for special reproduction such as still-picture reproduction. The video signal writing-reading period for the field memory is set to a value which is the color subcarrier period multiplied by an integer, is also the horizontal synchronizing period multiplied by an integer and is further approximate to one field period to the greatest possible extent, to thereby eliminate the discontinuity of video signals due to the track jumping action of the pickup.

Abstract: The present invention proposes a memory device comprising a fixed disc on the surface of which data may be stored, and rotating transducers or heads which may be positioned to access any location on the disc. The rotating heads are mounted on transducer arms which are designed in such a manner that the transducer seeks outward as it is rotated. Centrifugal force imparts a radial force on the arm which is movable in a low friction system along with the transducer, the radial force causing the transducer to move outward together with the radial arm with increasing rotational speed of the spindle motor.A counteracting spring having a force in a direction opposite to the radial force would provide a radially inward force on the transducer arm, so that at any given speed the location of the transducer and the arm, and therefore the transducer's positional relationship to a desired track, is precisely determined by the balance of the inwardly acting spring force and the outwardly driving centrifugal force.

Abstract: A video signal recording/reproducing apparatus which records pictures by compressing the video signal in multiple field units and reproduces an signal by the expansion process, and which continuously and repeatedly outputs each field of the reproduced television signal on the screen by use of a field detecting unit which operates to ensure that a reciprocal of a multiplication index of a desired reproducing speed is selected as a number of continuous reproductions of one field and also by use of a change-over unit for changing over the reproduced signal in field units.

Abstract: A video signal reproduction apparatus with time base error correction and synchronization correction. The synchronization correction circuit is used only where the condition of the recorded video signal is such that synchronization correction is necessary. The latter circuit includes an image memory for storing a field of video data. The video data input to the image memory is at a relatively low data rate to enable use of a relatively low capacity image memory.

Abstract: An optical disc drive is disclosed in which an optical disc on which pregrooves are formed for affording wobble signals frequency modulated by predetermined data signals is driven at a constant linear velocity. Until the time that the data signals obtained upon demodulating the wobble signals are taken out correctly, the reproduced wobble signals are compared with a predetermined reference signal so that a spindle motor for rotating the optical disc is controlled so as to be driven at an approximately constant linear velocity. After it is detected that the data signals obtained upon demodulating the wobble signals are taken out correctly, the spindle motor is driven in a controlled manner on the basis of data signals obtained upon demodulating the reproduced wobble signals so that the spindle motor is controlled so as to be driven at a constant linear velocity.

Abstract: A video signal reproducing apparatus forms a still picture signal by storing a reproduced video signal in a memory and then by repeatedly reading out the signal stored in the memory. The video signal reproducing apparatus forms a reference signal which is synchronized with the still picture signal read out from the memory, and controls the relative movement of a reproducing head and a recording medium on the basis of the reference signal.

Abstract: A method and apparatus for automatically compensating for variations in recording medium, performance of the recording/playback head and the efficiency of the head/medium interface during video recording is disclosed. Automatic compensation in the recording of the video signal is accomplished by first recording a test signal on the recording medium, reproducing the recorded test signal from the recording medium, measuring one or more characteristics of the test signal, modifying recording parameters based on the measured characteristics, erasing the recorded test signal, and recording a video image signal using the modified recording parameters.

Abstract: An apparatus for reproducing a color video signal recorded in a recording medium by a time compressed integration signal format in a luminance signal, one of two types of chrominance signals being selected by a predetermined rule in every horizontal scanning period, and a chrominance index signal representing the type of the selected one of chrominance signals are multiplexed along a time base, includes at least two cascade-connected 1H delay circuits for delaying at least the chrominance signal in a signal reproduced from the recording medium, an extraction circuit for extracting the chrominance index signal from the reproduced signal, at least two cascade-connected latches, connected to an output of the extraction circuit, for holding extracted the chrominance index signals respectively corresponding to output signals from the 1H delay circuits, an identification circuit for identifying the type of chrominance signal supposed to appear in each horizontal scanning period of the reproduced signal, and a selec

Abstract: A method and apparatus of reproducing data recorded on a recording medium encompass generating a flag indicative of a state of the recorded data, storing the recorded data into a data memory and the flag into a flag memory, reading the recorded data from the data memory and flag from the flag memory, and selectively initializing the flag memory during a reading period, such as slow-motion reproduction and freeze reproduction, in which the recorded data and flag are to be repeatedly read out from the data memory and flag memory a number of times prior to a subsequent writing of the recorded data and flag into the data memory and the flag memory. The initializing of the flag memory is carried out only during a final time the recorded data stored in the data memory is read during the reading period.

Abstract: A reproducing apparatus is arranged to have a plurality of reproducing modes corresponding to a plurality of recording modes in which recording is performed on a tape-shaped recording medium by allowing the medium to longitudinally travel at one of different speeds and to reproduce information signals recorded in recording tracks which are formed on the tape-shaped recording medium in the direction of crossing the longitudinal direction of the medium by recording the signals at least in one of the recording modes.

Abstract: A still/slow circuit for use in a two-head type VCR includes a digital counter for counting slow indication signals, a pulse oscillator for outputting slow drive control signals in response to outputs of the digital counter, an envelope detector for integrating playback video signals to detect envelopes therefrom, a differentiator for differentiating head-switching signals to output only positive pulse signals, a sample/hold unit for sampling and holding the output signals of the envelope detector by being triggered with the positive pulse signals of the differentiator, an OR-gate unit which allows still indication signal and slow indicating signal to pass therethrough, a comparing unit for comparing as to whether or not the output signal level of the envelope detector is same as the output signal level of the sample/hold unit and outputting an oscillation drive voltage when they do not coincide with each other, a pulse oscillator for outputting still drive control signals, and a differentiator for differenti

Abstract: A television receiver and apparatus which includes a field memory which is capable of storing a video signal during a first period of time and includes a control for controlling the writing of the video signal in the image and also for displaying the stored video signal on the video screen intermittently.

Abstract: A video editing and processing system is so arranged that frames of video signals (1) from a store (3) can be displayed (7) in reverse order while associated audio signals (9) are delivered in normal order, so that the sound is heard in the usual manner.

Abstract: An apparatus and method for magnetically transducing information with respect to select portions of selected of a multitude of parallel record tracks on an elongated magnetic record member such as a flexible magnetic belt which is supplied from a coiled formation thereof stored in an elongated magazine or cartridge. The magazine is removably secured in or against a housing containing transducing means and means for automatically engaging a free end of the magnetic belt and driving same from its housing along a select path to position a select portion of the length of the belt at a transducing location. A magnetic transducer is automatically aligned with a select track of the belt and is driven along such select track while it is energized to either record information along or reproduce previously recorded information from the select portion of the select track of the belt.

Abstract: A read address and a write address are rendered coincident to each other and, by the use of a read modify write cycle, an address representing a write picture start point is held in a register. The start point held in the register is utilized as a read start address, whereby skew can be corrected without the necessity of increasing the number of required memories.

Abstract: A hand-held transducing device for magnetically recording upon and playing from stationary records of a type adapted to be carried on back of a photograph or the like employs a rotating head for transducing information with respect to the record and means apart from the record for guiding the transducer to travel in a record trace while progressively varying the pitch of the head with respect to the track so as to vary the track density across the surface of the record, thereby extending the playing time of a record.