Abstract: A method and apparatus for controlling the capstan servo of a magnetic video tape recording and reproducing machine is disclosed. The invention provides almost instantaneous color framing and synchronous control track lock when accelerating from a very slow tape velocity up to normal velocity. An embodiment of the apparatus also stops the tape at a predetermined position relative to control track transitions when stopping the machine from a noncontrol track lock operating mode, such as shuttle, variable velocity reproducing and jog.

Abstract: The disclosed reproducing apparatus is capable of obtaining a dubbing signal of high picture quality. In the apparatus a head reads a video signal from a record bearing medium; an interpolation circuit interpolates the video signal read out by the head; and an interpolated signal producing circuit producing the video signal interpolated by the interpolation circuit. A dubbing signal producing circuit is arranged to have a video signal which is read out by the head and is not processed through the interpolation circuit produced outside of the reproducing apparatus as a dubbing signal.

Abstract: A video information playback system for playing the so called CLV disks which uses a digital video memory for enabling special playback mode operations such as the SLOW mode, the STILL mode, and the FAST mode. In order to simplify the contruction of the system, a frequency of write and read clock signals used in the digital video memory is selected n times the horizontal synchronizing signal frequency. A time base servo control part of the system is controlled using a phase difference signal between a playback synchronizing signal and a reference signal whose frequency is 1/n time the frequency of the write and read clock signals. During a track jump operation for a special playback mode operation, a supply of the write clock signal and/or the read clock signal to a reference signal generator is stopped so that the phase difference is maintained constant before and after the track jump operation.

Abstract: An information signal recording disc is recorded with a stereoscopic television signal comprising a stereoscopic video signal and audio signals. The disc comprises a spiral track made up of a plurality of track turns, and video signals related to four fields are recorded on each of the plurality of track turns. Each track turn is time-sequentially recorded with right-eye and left-eye video signals of mutually different field numbers out of the right-eye and left-eye video signals of a simultaneous stereoscopic television signal in a sequence of field numbers together with audio signals, so that the right-eye video signal and the left-eye video signal are respectively recorded for a time period of two fields in each track turn. The right-eye and left-eye video signals related to identical fields are recorded side by side to each other in two mutually adjacent track turns.

Abstract: A still picture reproducing system for a magnetic recording and reproducing apparatus is disclosed. The system sends one frame in order to shift a reproduction mode from ordinary reproduction to reproduction of a still picture by use of so-called "fine slow", sends one more frame if a noise is detected on a picture at this time, and stops if no noise is detected.

Abstract: A time-base corrector for a video tape recorder capable of slow motion reproduction, in which the time-base correction is effected by the control of write into and read from a memory circuit of digitized reproduction video signal in such a manner that even if a dropout occurs of the vertical sync signal required for address control of the write/read operation, a forecast V signal from a V forecasting circuit is prepared and used thereby to eliminate the vertical fluctuations of the image on the monitor screen completely. It is also possible to produce a high-quality image completely free of the vertical fluctuation even at the time of special reproduction changing in V signal internals.

Abstract: A slow motion reproducing apparatus in which a dynamic tracking head dynamically traces slant recording tracks sequentially formed on a tape in its longitudinal direction while the tape is transported at variable tape speed to thereby reproduce a video signal from the recording tracks is disclosed, which includes head displacement amount specifying means for specifying a head displacement amount so as to make the dynamic tracking head trace the specified track on the basis of a tracking track information for specifying a track that the dynamic tracking head should trace and a head position information indicative of the position of the dynamic tracking head.

Abstract: Method and apparatus for playing back a plurality of digitally encoded audio messages along with associated video data. The audio messages are combined along with a plurality of corresponding audio message start address signals when recorded on a recording medium. The digitally encoded information can be recorded in the audio domain, i.e. as digitized audio recorded on an audio channel of the medium, or in the video domain, i.e., as digitized audio recorded on the video channel of the medium. In playback, the address and audio data signals are retrieved from the recording medium and stored. The address signals are utilized to access selectable messages for decoding and playback of the selected audio message.

Abstract: A system for recovering information from a videodisc and performing special functions which enhance the operational character of the system. To increase the reliability of landing at or near a target track, provisions are made to search for a track adjacent a target track whose track identifier has been obliterated. Further, a method and means for stepping forward or reverse one field at a time is disclosed. Another aspect of the invention concerns a capability to respond to a random command instruction resulting in subsequent functioning of the system in a random manner. Yet a further aspect of the invention is related to controlled jumping of one or more tracks during vertical blanking time to produce unique forward or backward motions; multiples of playing speed, both forward and reverse, and visual special effects can be realized using the multiple track jumping feature. Finally, a method and means are described which permit synchronous transmission of video from a videodisc to an external using device.

Abstract: Apparatus for recording audio and video signals comprises a signal processor for producing a processed video signal and a frequency-modulated audio signal. The frequency-modulated audio signal is obtained by frequency-modulating a carrier in response to an input audio signal. A magnetic recorder records both the frequency-modulated audio signal and the processed video signal in oblique tracks arranged successively on a magnetic tape. The recording is done selectively in a first recording mode wherein the oblique tracks are formed with spaces between successive tracks or a second recording mode wherein successive tracks are contiguous. A modulation control controls the frequency-modulation carried out by the signal processor to produce the frequency-modulated audio signal with a first modulation index in the first recording mode and with a second modulation index greater than the first modulation index in the second recording mode.

Abstract: A sound recording system for an electronic still camera records video signals indicative of still pictures time-serially in a rotary magnetic recording medium. An audio signal having a duration equal to a first period of time is compressed in the time axis into an audio signal having a duration equal to a second period of time, which is shorter than the first. The compressed audio signal is written into the recording medium as a unit record of data. Such a time-axis compression and recording cycle is repeated to record audio signals in the recording medium as discrete unit record data, in association with the video signals recorded.

Abstract: A pseudo vertical synchronizing signal producing circuit produces a pseudo vertical synchronizing signal which is used instead of a regular vertical synchronizing signal of a video signal during a special reproduction mode of a helical scan type magnetic recording and/or reproducing apparatus. The pseudo vertical synchronizing signal producing circuit effectively utilizes a counter circuit for producing a pulse when a counted value therein reaches predetermined threshold values set therein, and employs a minimum number of monostable multivibrators and external variable resistors coupled thereto, so that the circuit can easily be manufactured in the form of an integrated circuit.

Abstract: In a magnetic recording method in which, for the purpose of tracking, a signal having a predetermined frequency is extracted from a reproduced FM recording signal recorded on a magnetic recording medium, and the magnetic head is brought to a position where the amplitude of the signal of predetermined frequency becomes substantially maxim; an FM recording signal recorded on a track of the recording medium is reproduced immediately after the recording, when dropout is detected in the recorded signal, a signal having a frequency other than the predetermined frequency is recorded on the same track in a relation superposed on the recorded signal, and the same recording signal as that recorded already on the dropout-including track is recorded on another track which may be the next adjacent track again.

Abstract: A video player includes a playback head that repeatedly passes in contact with a circular track on a flexible magnetic disk in order to reproduce a still picture on a video display. By cycling the player into a special quiescent state after a certain interval elapses without user instructions, excessive disk wear is avoided. While in the quiescent state, the disk drive motor is stopped--immobilizing the disk-to-head interface--and the video display is blanked. If user instructions are received while in this state, the disk drive motor is reenergized and the video display is resumed, showing the still picture displayed prior to interruption. If no user instructions are received during a further interval, the player is shut off.

Abstract: The apparatus comprises a manually operable device producing pulses which directly or after integration, determine the rate of replay of the digital audio. These pulses are counted by a counter. Each pulse corresponds to 1.5/500 s audio. The counter is reset at the rate F.sub.s /2048 where f.sub.s is the constant output sampling rate and its contents are held in a latch whose contents are inversely proportional to the replay sampling period. Adders add the contents of the counter into overflowing accumulators and clocked at the KHz fixed sampling rate f.sub.s and 128 times this rate respectively. The number of SPR of the first accumulator represents the sample displacement while the MSB of the second accumulator provides the replay clock. The sample displacement (d) represents the displacement between an output sample and an input sample and controls a two stage interpolation by way of a finite impulse response filter and a linear interpolating filter.

Abstract: An apparatus for reproducing picture signals in conformity with revolution of a motor from a disk on which the picture signals are recorded includes separating means for successively separating horizontal synchronizing signals from the reproduced picture signals and producing separated horizontal synchronizing signals, detecting means for detecting the time intervals at which the horizontal synchronizing signals are produced by the separating means and putting out detection data indicative of the plurality of detected time intervals, memory means, means for storing in the memory means the detection data corresponding to at least one field of the picture signals, preparation means for preparing control data in accordance with the detection data stored in the memory means and storing the control data in the memory means, the preparation means preparing the control data from the detection data in accordance with a transfer function, and control means for controlling the revolution of the motor in accordance with

Abstract: A tracking system for a rotary magnetic recording medium includes a magnetic head for sensing signals on a plurality of tracks formed on the recording medium such that a beginning and an end of recording align with each other, a head feeding unit for transporting the magnetic head to a position where a desired one of the tracks is located, and a control unit for controlling the head feeding unit to effect tracking. The control unit includes an operational unit for sampling a signal sensed by the head in response to a rotation of the recording medium at a plurality of sampling points, and adds the sampled values with predetermined weights. Based on a result of the weighted addition, the control unit performs a tracking control.

Abstract: A system for recovering information from a videodisc and performing special functions which enhance the operational character of the system. To increase the reliability of landing at or near a target track, provisions are made to search for a track adjacent a target track whose track identifier has been obliterated. Further, a method and means for stepping forward or reverse one field at a time is disclosed. Another aspect of the invention concerns a capability to respond to a random command instruction resulting in subsequent functioning of the system in a random manner. Yet a further aspect of the invention is related to controlled jumping of one or more tracks during vertical blanking time to produce unique forward or backward motions; multiples of playing speed, both forward and reverse, and visual special effects can be realized using the multiple track jumping feature. Finally, a method and means are described which permit synchronous transmission of video from a videodisc to an external using device.

Abstract: Digital televison signal processing apparatus comprise a field store arrangement comprising first, second and third field stores each capable of storing digital signals relating to one field of a televison signal, means to supply a digital television signal at a variable rate to the field store arrangement, a write control device to supply the digital television signal to at least one of the field stores for writing therein, depending on the rate of supply of the digital television signal, and a read control device to read the stored digital television signal from at least one of the field stores depending on the rate of supply of the television signal, no field store being written into at the same time that it is read from, and the write control device rotating the writing and reading around the field stores cyclically.

Abstract: A tracking servo device for controlling the relative position in the radial direction of a recorded disc between an information reading point of a pick-up and a recorded track having an improved accuracy in performing track-jumping operations. In accordance with the invention, the track jumping operations are performed only in response to a tracking error signal, that is, without the use of a jump drive signal or brake signal, whereby fine control and adjustment of various signals within the circuit are made unnecessary and accurate and quick track jumping operations are ensured. To achieve this, an in-phase and an out-of-phase signal with respect to the tracking error signal are produced and alternately selected through a switch. The levels of the signals applied to the switch may be clamped to prevent them from passing through zero.

Abstract: An electronic imaging camera is provided for recording either continuous moving video images in analog format or high resolution still images in digital format. The electronic imaging camera includes an electronic viewfinder in which either the continuous moving images or low resolution still images may be played back. An accessory may be releasably connected to the electronic imaging camera to facilitate playback of the high resolution still images on a separate video display device.

Abstract: A slow motion system includes a variable interlace constant line-rate video camera, a variable speed recorder and a line-rate converter connected in cascade. During slow motion shooting the camera interlace ratio is increased, the recorder playback speed is reduced by the interlace ratio and the converter increases the line-rate of the recorded signal in proportion to the interlace ratio thereby providing a constant field-rate constant line-rate video output signal having a temporal resolution which increases as the interlace ratio increases.

Abstract: A capstan servo for moving video tape with variable speed during playback controls the tape speed according to time period inputs. The input specifies the number of seconds per hour of program length, for example, that a segment of recorded video information is to be expanded or compressed compared relative to its normal real time playback length. The speed of tape transport during playback is varied by locking the reproduced control track vertical sync signal to a synthesized time adjustable reference signal.

Abstract: A television synchronization signal processing circuit includes a reproduction/demodulation circuit for reproducing a video signal by repeatedly reading out a video signal for one field from a video signal recording medium, generating the reproduced video signal and a synchronization signal separated from the reproduced video signal, a first delay circuit for delaying the reproduced video signal read out for every other field from the reproduction/demodulation circuit by one half a period of the horizontal synchronization signal, signal transmitting circuit for transmitting a vertical synchronization signal included in the separated synchronization signal from the reproduction/demodulation circuit, and waveform synthesis circuit for synthesizing output signals from the first delay circuit and signal transmitting circuit to produce a composite video signal used for effecting video display.

Abstract: A system for reproducing a video signal in a still picture reproduction comprises a circuit for generating a still picture reproduction mode signal during a still picture reproduction mode, a circuit for counting a predetermined number of pulses in the rotation detection pulse signal, after the still picture reproduction mode signal is generated, from a point in time when a reproduced control pulse signal or a signal in phase with the reproduced control pulse signal is first obtained as a reference signal, and for generating a rotation stopping signal as an output signal when the predetermined number of pulses are counted, a circuit responsive to the still picture reproduction mode signal, for reducing a voltage which is applied to a capstan motor, and a circuit for stopping the rotation of the capstan motor responsive to the rotation stopping signal which is obtained after the voltage applied to the capstan motor has been reduced and a rotational speed of the capstan motor has decreased.

Abstract: A magnetic disk recording apparatus is disclosed having a synchronization modification circuit utilized to control the rotational speed of a magnetic disc, whereby an integer number of horizontal lines of a standard video signal are recorded on one annular track of the magnetic disc. When the recorded video signal is repeatedly reproduced, a non-interlaced single field "still" video image is displayed on a standard monitor adapted to display an interlaced image.

Abstract: A method for recording and reading out a video format signal includes steps of recording frequently used words, phrases, or sentences in an audio informations corresponding to video informations, in a frame before frames for video informations while being treated by time axis compression process, and recording remaining audio informations in desired frames among the frames for the video informations also while being treated by the time axis compression process. In the playback of the thus recorded audio informations, the frequently used part of the audio information is stored in a part of a memory device, and the remaining part of the audio information are stored in the remaining part of the memory device, and the stored audio informations are read out at need and combined with each other while being treated by the time axis expansion process.

Abstract: A video signal reproducing apparatus comprises an error signal forming circuit (31) for providing an error signal (f) for tracking control and a movable head controlling circuit (34) for positioning control of movable heads based on the error signal (f). When still reproduction is started and a still reproduction instructing signal (c) is applied to a four-field pulse generating circuit (35), the movable head controlling circuit (34) is disabled by a detection period signal (d) of the high level in a four-field period provided from the circuit (35) to forbid the positioning control of the movable heads and an error signal (f) is formed by specified pilot signals reproduced from the movable heads where the positioning control is forbidden as well as by reference signals f.sub.1 to f.sub.4 selected successively. A still control signal generating circuit 40 determines and provides as output two reference signals most suitable for still reproduction based on the above stated error signal (f).

Abstract: A rotary recording medium comprises a video signal of the same unit repeatedly recorded for N-field period (N is a natural number greater than or equal to 2) for each track turn, a track shift address signal for instructing the existence of forced track shift of a pickup reproducing element, the shifting direction, and the shifting position, recorded on at least one position for one revolution of the rotary recording medium with a constant period regardless of the kind of video signal source of the video signal, where the track shift address signal comprising at least a synchronizing code, rotary recording medium type discriminating code, a kick existence instructing code, and a kick direction instructing code, and divided audio signal parts obtained by dividing an audio signal for every field period of the video signal which is reproduced, successively arranged and recorded according to a scanning locus of the pickup reproducing element upon normal reproduction.

Abstract: Method and apparatus for playing back a plurality of digitally encoded audio messages along with associated video data. The audio messages are combined along with a plurality of corresponding audio message start address signals when recorded on a recording medium. The digitally encoded information can be recorded in the audio domain, i.e. as digitally audio recorded on an audio channel of the medium, or in the video domain, i.e. as digitized audio recorded on the video channel of the medium. In playback, the address and audio data signals are retrieved from the recording medium and stored. The address signals are utilized to access selectable messages for decoding and playback of the selected audio message.

Abstract: A planar array of high track density magnetic heads is mounted on a piezoelectric structural member. The heads are in contact with an area of magnetic recording medium coated onto a stationary support member located adjacent the head array structure. A repetitive ramp voltage is applied to the piezoelectric member causing repetitive linear extension of the member with resultant relative motion between the head array and the medium. A position transducer provides a feedback signal which monitors the position of the head array in relation to the magnetic medium, and this feedback signal is used to servo control the motion of the head array. Recording and playback of the stored information occurs coincidentally with the movement of the head array relative to the medium.

Abstract: A rotary recording medium is recorded with video signals on a spiral track thereon, and the video signals are related to different programs with respect to every one track turn. A reproducing apparatus comprises a reproducing element for scanning over the spiral track on the rotary recording medium, and a circuit for shifting the reproducing element to an adjacent track turn at a changeover position of the recorded video signals related to the different programs on each track turn so that the video signal related to the same program is continuously reproduced.

Abstract: Magnetic recording and reproducing apparatus records and reproduces on or from a magnetic recording tape a high speed video signal obtained from a high speed scanning video camera having a scanning speed N times the scanning speed of a standard video camera generating a standard television video signal, where N is an integer. The apparatus includes a drive for driving the magnetic recording tape to a run at tape speed N times the tape speed of a standard recording apparatus, circuitry for dividing the high speed video signal into N-channel video signals, and an expander for expanding the time axis of the high speed video signal so that each of the N-channel video signals is slightly compressed as compared to the standard television video signal.

Abstract: A digital video signal reproducing apparatus comprises a reproducing circuit for reproducing a digital video signal from a recording medium, which digital video signal is added with at least a write-in specifying code and a read-out specifying code for specifying a memory circuit part to picture element data groups which are obtained by subjecting a video signal to a digital pulse modulation, a detecting circuit for detecting the write-in specifying code and the read-out specifying code within a reproduced digital video signal from the reproducing circuit, a generator for generating various synchronizing signals and reference signals, first and second memory circuit parts each having a memory capacity for storing picture element data corresponding to one picture, a write controller for causing the picture element data to be written into one of the first and second memory circuit parts according to a value of the write-in specifying code, a latch circuit for latching the read-out specifying code by a vertical

Abstract: A device for tracking a movable body along a linear path parallel to a plane includes a linear motor for driving the body along the linear path. The body is mounted, as by rollers, for movement along a guide, such as a pair of parallel guide rails, supported on a base which also supports the motor. To enhance stability of the body during tracking movement, the rollers or other mounts for the body are urged against the guide by the magnetic action of a flux which is separate from the principal flux used to generate thrust for the linear motor and which provides an attractive force against preferably a pair of members, such as steel plates, of high magnetic permeability fixed to the movable body.

Abstract: A rotary recording medium recorded with an information signal including a video signal along a spiral track thereon, and from which the recorded information signal is reproduced by a reproducing apparatus in which a reproducing element scans over the spiral track, is further recorded with a stop signal on a track turn recorded with an information signal which is to be reproduced repeatedly for a predetermined time period so that the reproducing element repetitively reproduces the track turn for the predetermined time period. The reproducing apparatus comprises a stop signal detection circuit for detecting the stop signal from a signal reproduced by the reproducing element, and a circuit responsive to the stop signal detected by the stop signal detection circuit, for causing repetitive reproduction of a predetermined track turn recorded with the stop signal. The still picture reproduction is performed by repetitively reproducing the information signal recorded on a track turn recorded with the stop signal.

Abstract: The invention relates to a reader-encoder of an magnetic card, which comprises means for maintaining the support in a fixed and well determined position in contact with read-write means disposed on a carriage moving in a uniform rectilinear movement. It comprises means for orienting the read-write means with respect to the magnetic track of the support and drive means associated with two transmission belts, one elastic, the other rigid. The reader-encoder is employed for magnetic cards used in banks.

Abstract: A drive system for use in an optical disk file device has a multipolar motor such as a three-phase linear DC motor for positionally controlling a read/write head and driving the same to track an optical disk. Selection of the coils of the motor and phase switching of the coils are stopped while the drive system is in the tracking mode.

Abstract: A portable television camera and recording device is provided which may be employed to generate, monitor and record on a single record member either or both still and motion picture information. The device is supported within a single housing which is provided with manual holding and control means permitting the housing to be pointed in a particular direction at an object or scene to be recorded. Supported within the housing at the front end thereof is a television camera or flying spot scanner, a television recorder such as a magnetic tape video recorder or a television card recorder and a visual monitor such as a cathode ray tube located to be viewable from the rear end of the housing. Manually operable controls are provided in the form of switches which may be selectively actuated or energized to perform such functions as monitoring and/or recording single frames of video information or multiple frames thereof defining a motion picture.

Abstract: A tape stop position detecting apparatus for a magnetic video reproducing apparatus in which four kinds of pilot signals (f.sub.1 to f.sub.4) recorded in a magnetic tape together with a video signal are reproduced from the magnetic tape comprises a comparing circuit (301), a region signal generating circuit (401) and a position signal generating circuit (402). The comparing circuit (301) compares the amounts of two signals (f.sub.1 and f.sub.3) to generate a comparison output (S9). The region signal generating circuit (401) operates in response to the comparison output (S9) to generate signals (O1 and O2) indicating in which region the stop position of the magnetic tape is located. The position signal generating circuit (402) operates in response to the comparison output (S9) and a head selecting signal (HSW) to generate a signal (O3) indicating the stop position of the magnetic tape. By the above described signals (O1 to O3), the stop position of the magnetic tape can be detected.

Abstract: A sound recording apparatus for a still camera has a magnetic eraser head for erasing an audio signal stored in a track of a magnetic audio disc and a magnetic write head for writing an audio signal into the track a portion of which is just emptied by the erase head, during the rotation of the audio disc. Whenever a release button of the camera is depressed to write a video signal indicative of a still image into a track on a magnetic video disc, an audio signal associated with the still image and starting from the instant a predetermined time before the shot is written into the track on the audio disc. The predetermined time is the time period for which the track on the audio disc completes one rotation. Indentification data is recorded on each of the associated audio and video tracks after the audio or video signal to facilitate reproduction thereof.

Abstract: A magnetic card reader of the moving head type in which a magnetic head is supported by a leaf spring on a supporting member horizontally. The leaf spring has an aperture at the center thereof to accommodate and support the magnetic head so that two wings of the leaf spring extend outwardly from opposite sides of the magnetic head in directions parallel with the reading direction or the direction in which the magnetic head travels carried by the supporting member. The leaf spring is supported by the supporting member so that a resilience is exerted against the magnetic card and also the magnetic head is rotatable about the axis along the two wings of the leaf spring by twisting the same.

Abstract: A video disc record system having a stylus for recovering information effects kicks which induce limited stylus translations across a disc record surface. Control circuitry responsive to a desired stylus translation are coupled to kicker means for inducing the stylus translation. Actual stylus translations are used to calibrate the kicker activation signals to minimize the kick used to induce stylus translations thereby reducing damage to the disc surface incurred during a stylus translation.

Abstract: A video record medium, such as a record disc, for recording a composite video and audio signal suitable for stop-motion playback, with accompanying audio. Discrete segments of an analog audio signal are digitized and compressed in time and recorded on alternate tracks on the disc, and corresponding frames of a video signal are recorded on the tracks located therebetween. During playback of the disc, a selected audio track is scanned initially and the digital audio data recovered therefrom is entered into a memory device, after which the track for recording the corresponding video frame is scanned in a repeated fashion, to produce a stop-motion display of the frame, while the stored audio data is extracted from the memory device and converted back to an analog format, for simultaneous playback at its original speed.

Abstract: A variable-speed picture reproducing apparatus for obtaining noise-free slow-motion reproduction pictures suitable for use in a helical-scanning magnetic picture recording/reproducing system in which the tracking pilot signal is recorded along with the video signal on the video track. The apparatus include a drive for transporting the tape intermittently, a detecting arrangement for detecting that the tracking error signal derived from the pilot signal picked up during the intermittent tape transportation rises or falls across a predetermined level, and a control arrangement for performing tape stop control including a reversal braking for a capstan motor of the drive upon expiration of a delay time determined by a predetermined computation following the time point of the detection of the signal level.

Abstract: A magnetic recording and reproduction apparatus are provided employing a flat, flexible magnetic record member, such as a plastic sheet or card coated with or containing a magnetic recording material and having parallel closely spaced record tracks. In one form, a flexible record card is arcuately deformed into the configuration of a cylinder or a partial cylinder and one or more magnetic transducers are caused to scan a selected circular track of the card and to record on and/or reproduce from the selected track. Rapid relative axial movement between the arcuately deformed card and the transducer is effected until the transducer becomes aligned with a selected track of the card, whereupon transducing is automatically effected for scanning at least a selected portion of such selected track.

Abstract: A disc player for reproducing an information signal from a rotating disc having record tracks defined by successive turns of a spiral signal path in which the information signal is recorded, which is adapted to perform a small scale track jump operation for rapidly moving the reading position determined by a pick-up device in the direction transverse to the spiral signal path on the disc to a relatively short distance repeatedly in the fast forwarding or fast reversing mode and is so arranged that the number of times of the small scale track jump operation performed repeatedly for a certain period in the fast reversing mode is larger than the number of times of the small scale track jump operation performed repeatedly for the same certain period in the fast forwarding mode, whereby the substantial moving distance measured along the spiral signal path in respect of the reading position by the pick-up device moved for the certain period in the fast forwarding mode coincides with or closes to the substantial mov

Abstract: A superimposing and reproducing apparatus superimposes and reproduces a plurality of still pictures taken separately, e.g., a plurality of still picture signals recorded electrically without using any silver salt recording medium as a composite picture and displays it as a multiple-shot picture on an ordinary television receiver. The apparatus includes a switching circuit adapted to sequentially select the still picture signals read from the recording medium so as to produce a multiple-shot picture by virtue of the afterimage effect of vision.

Abstract: A magnetic tape transport controller for a magnetic recording and reproducing apparatus in which a pilot signal for tracking control having four different frequencies is recorded on a magnetic tape by a rotary magnetic head and the magnetic tape is transported in a playback mode at a different tape speed than that in a recording mode. The tape transport controller has means for detecting an amplitude change of a specific one of signals derived by frequency-converting a reproduced pilot signal and controlling the tape speed such that the frequency of the amplitude change is maintained at a predetermined frequency. It also has a phase control loop to control the tape speed such that a phase of the specific signal coincides with a phase of a reference signal.

Abstract: A rotary recording medium is recorded with an information signal including a video signal on a spiral track formed thereon in terms of a plurality of fields of the video signal in one track turn of the spiral track. The rotary recording medium is time-sequentially recorded with information signals related to two or more different programs so that each information signal is successively recorded in terms of a period less than or equal to the above plurality of fields before being switched to an information signal related to a different program which is recorded immediately thereafter. A reproducing apparatus comprises a reproducing element which scans over the spiral track to reproduce the recorded information.